US Patent Class 219
ELECTRIC HEATING




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Current as of: June, 1999
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  DF  CLASS NOTES
600  DF  INDUCTIVE HEATING
601  DF  .~ With diverse-type heating
602  DF  .~ Metal working
603  DF  .~.~ Bonding
604  DF  .~.~.~ Container sealing
605  DF  .~.~.~ Wire (e.g., cable, etc.)
606  DF  .~.~.~ Ring
607  DF  .~.~.~ Tube (i.e., pipe)
608  DF  .~.~.~.~ With electrical control (e.g., speed, temperature, gaging thickness, etc.)
609  DF  .~.~.~.~ Layering (e.g., coating, lining, etc.)
610  DF  .~.~.~.~ With preheating or postheating
611  DF  .~.~.~.~ Plural (e.g., end to end, etc.)
612  DF  .~.~.~.~ Seam bonding
613  DF  .~.~.~.~.~ With impeder
614  DF  .~.~.~.~.~ With guiding device
615  DF  .~.~.~ Brazing (e.g., cladding, etc.)
616  DF  .~.~.~ Soldering
617  DF  .~.~.~ Welding
618  DF  .~ With heat exchange
619  DF  .~.~ Roller (e.g., godet, etc.)
620  DF  .~.~ Cooking
621  DF  .~.~.~ Utensil (e.g., pot, pan, etc.)
622  DF  .~.~.~ With support
623  DF  .~.~.~.~ Having cooling device
624  DF  .~.~.~ Core or coil structure
625  DF  .~.~.~ Intermediate member condition responsive
626  DF  .~.~.~.~ Load sensing
627  DF  .~.~.~.~ Temperature
628  DF  .~.~ Fluid or liquid heater
629  DF  .~.~.~ By tube (i.e., pipe)
630  DF  .~.~.~.~ Core or coil structure
631  DF  .~.~.~.~.~ Core rotation
632  DF  .~.~ With cooling arrangement
633  DF  .~.~ Bonding (e.g., nonmetallic, etc.)
634  DF  .~.~ Susceptor
635  DF  .~ Specific heating application
636  DF  .~.~ Wire (e.g., cable, etc.)
637  DF  .~.~ Rod
638  DF  .~.~.~ Semiconductor
639  DF  .~.~.~ Irregular (e.g., camshaft, etc.)
640  DF  .~.~ Gear
641  DF  .~.~ Valve
642  DF  .~.~ Ring or link
643  DF  .~.~ Tube (i.e., pipe)
644  DF  .~.~.~ Interior surface
645  DF  .~.~ Strip (e.g., sheet, etc.)
646  DF  .~.~ Slab (e.g., ingot, etc.)
647  DF  .~ With workpiece support
648  DF  .~.~ Levitation
649  DF  .~.~ Materials
650  DF  .~.~ With monitoring (e.g., regulating, etc.)
651  DF  .~.~ Gas environment
652  DF  .~.~ Rotation of workpiece
653  DF  .~.~ Conveyor
654  DF  .~.~.~ Charge or discharge
655  DF  .~.~.~ Multiple stations
656  DF  .~.~.~.~ Plural heating zones
657  DF  .~.~.~ Curve path
658  DF  .~.~.~ Lift (i.e., vertical movement)
659  DF  .~.~ Pressure applicator (e.g., clamp, etc.)
660  DF  .~ With power supply system
661  DF  .~.~ Power switching
662  DF  .~.~.~ Plural load inductors
663  DF  .~.~.~ Condition responsive
664  DF  .~.~.~.~ Input monitoring
665  DF  .~.~.~.~ Load sensing
666  DF  .~.~.~.~.~ With tuning
667  DF  .~.~.~.~.~ Temperature
668  DF  .~.~.~ With protection
669  DF  .~.~.~ Polyphase
670  DF  .~.~ With specific transformer
671  DF  .~.~ With plural load inductors
672  DF  .~ Specific inductor configuration
673  DF  .~.~ U-coil section
674  DF  .~.~ Cylindrical coil
675  DF  .~.~ Planar coil
676  DF  .~.~ With inductor support
677  DF  .~.~ With cooling arrangement
678  DF  MICROWAVE HEATING
679  DF  .~ With diverse device
680  DF  .~ With diverse-type heating
681  DF  .~.~ Convection heating
682  DF  .~.~.~ Steam generating
683  DF  .~.~.~ Gas burner
684  DF  .~.~.~ Tunnel type
685  DF  .~.~ Resistive heating
686  DF  .~ Gas environment (e.g., pressurized, etc.)
687  DF  .~ Fluid heater
688  DF  .~.~ Water
689  DF  .~.~ Beverage (e.g., coffee, etc.)
690  DF  .~ Waveguide applicator
691  DF  .~.~ Slotted
692  DF  .~.~.~ Meander (e.g., zigzag, etc.)
693  DF  .~.~.~ Having load passage
694  DF  .~.~ With dummy load
695  DF  .~.~ Input power port arrangement
696  DF  .~.~.~ With tuning
697  DF  .~.~.~ Plural feed
698  DF  .~ Tunnel furnace
699  DF  .~.~ With leakage suppression
700  DF  .~.~ Conveyor
701  DF  .~.~.~ Plural heating zones
702  DF  .~ With control system
703  DF  .~.~ Defrost
704  DF  .~.~ Load condition sensor
705  DF  .~.~.~ Plural diverse types
706  DF  .~.~.~ By ultrasonic or acoustic
707  DF  .~.~.~ Gas or vapor
708  DF  .~.~.~ Weight
709  DF  .~.~.~ Field intensity/reflection
710  DF  .~.~.~ Temperature
711  DF  .~.~.~.~ By infrared
712  DF  .~.~.~.~ Probe
713  DF  .~.~.~.~.~ Wireless type
714  DF  .~.~ Remote (e.g., card, etc.)
715  DF  .~.~ Power switching
716  DF  .~.~.~ With detector
717  DF  .~.~.~ Plural power supplies
718  DF  .~.~.~ Having duty cycle
719  DF  .~.~ With timer
720  DF  .~.~ With display or alarm
721  DF  .~.~ Starting circuitry
722  DF  .~.~ Interlock circuitry and structure
723  DF  .~.~.~ With additional safety feature
724  DF  .~.~.~ With latch assembly
725  DF  .~ Cookware (e.g., vessel, utensil, etc.)
726  DF  .~.~ With food mixer
727  DF  .~.~ Expandable
728  DF  .~.~ With field modifier
729  DF  .~.~.~ Shielding
730  DF  .~.~ With heat exchange (e.g., susceptor, etc.)
731  DF  .~.~.~ By fluent material (e.g., steaming, boiling, or frying, etc.)
732  DF  .~.~ With stand or handle
733  DF  .~.~ With drainage
734  DF  .~.~ With cover
735  DF  .~.~.~ Having vent
736  DF  .~ Radiation protection
737  DF  .~.~ With leakage detector
738  DF  .~.~ With leakage prevention
739  DF  .~.~.~ Door assembly
740  DF  .~.~.~.~ With screen or window
741  DF  .~.~.~.~ With choke or seal
742  DF  .~.~.~.~.~ Slotted choke
743  DF  .~.~.~.~.~ Choke cavity cover
744  DF  .~.~.~ Absorption
745  DF  .~ Field modification
746  DF  .~.~ With power feed structure
747  DF  .~.~.~ Phase shifting
748  DF  .~.~.~ Radiator (e.g., antenna, etc.)
749  DF  .~.~.~.~ Rotating
750  DF  .~.~.~ With tuning or particular modes
751  DF  .~.~ Mixer (e.g., rotating stirrer, etc.)
752  DF  .~.~ By load support movement
753  DF  .~.~.~ Horizontal and vertical
754  DF  .~.~.~ Horizontal (e.g., turntable, etc.)
755  DF  .~.~.~.~ Portable
756  DF  .~ Enclosed cavity structure
757  DF  .~.~ With cooling or ventilation
758  DF  .~.~ With cavity illumination
759  DF  .~ With heat exchange (e.g., susceptor, etc.)
760  DF  .~ With specific transformer
761  DF  .~ With specific generator
762  DF  .~ Load support
763  DF  .~.~ Shelf
764  DF  CAPACITIVE DIELECTRIC HEATING
765  DF  .~ Bonding
766  DF  .~.~ Shoe
767  DF  .~.~ Die embroidery
768  DF  .~.~ Sewing machine type
769  DF  .~.~ Container sealing
770  DF  .~ Specific heating application
771  DF  .~.~ Food
772  DF  .~.~ Fluent material
773  DF  .~.~ Sheet (e.g., board, etc.)
774  DF  .~ With workpiece support
775  DF  .~.~ Conveyor
776  DF  .~.~.~ Multiple stations
777  DF  .~.~ Pressure applicator (e.g., clamp, etc.)
778  DF  .~ With power supply system
779  DF  .~.~ Condition responsive
780  DF  .~ Specific electrode configuration
50  DF  METAL HEATING (E.G., RESISTANCE HEATING)
51  DF  .~ Chain
52  DF  .~.~ Methods
53  DF  .~ Rail bond
54  DF  .~.~ Arc weld
55  DF  .~.~ Resistance weld methods
56  DF  .~ Wire, rod, or bar bonding
56.1  DF  .~.~ Of wire leads
56.21  DF  .~.~.~ By microbonding
56.22  DF  .~.~.~ Methods
57  DF  .~.~ Butt bonding (e.g., welding)
58  DF  .~.~ Methods
59.1  DF  .~ Of cylinders (e.g., pipes and tubes)
60 R  DF  .~.~ Electric arc
60.2  DF  .~.~.~ Tube sheet welding
61  DF  .~.~.~ Methods
60 A  DF  .~.~.~ Rotatable tube welders
61.1  DF  .~.~ Having internal support means
61.11  DF  .~.~.~ With forming means
61.12  DF  .~.~.~ With cleaning means
61.13  DF  .~.~.~ With edge guidance means
61.2  DF  .~.~ Utilizing high frequency resistance heating
61.3  DF  .~.~ With edge guidance means
61.4  DF  .~.~ With adjustable electrode means
61.5  DF  .~.~ With condition responsive control of the welding process
61.6  DF  .~.~ Using three or more electrodes
61.7  DF  .~.~ With cooling means
62  DF  .~.~ Helical seam
63  DF  .~.~ Rotary transformer part
64  DF  .~.~ Container (e.g., cans)
65  DF  .~.~ Nonrotary electrode (e.g., oscillating)
66  DF  .~.~ Inside electrode
67  DF  .~.~ Resistance heating methods
68  DF  .~ Cutting or disintegrating (e.g., machining engraving)
69.1  DF  .~.~ Electric arc
69.11  DF  .~.~ Electric spark machining
69.12  DF  .~.~.~ Wire cutting
69.13  DF  .~.~.~ Circuits
69.14  DF  .~.~.~ Dielectric composition and purification
69.15  DF  .~.~.~ Electrodes
69.16  DF  .~.~.~ Gap spacing control
69.17  DF  .~.~.~ Methods
69.18  DF  .~.~.~ Pulse
69.19  DF  .~.~.~ Safety circuits
69.2  DF  .~.~.~ Vibrating electrodes or workpiece
70  DF  .~.~.~ Hand-type tools
71  DF  .~ Liquid electrode
72  DF  .~ Nonatmospheric environment at hot spot (e.g., resistance weld under oil, vacuum)
73  DF  .~.~ Slag (e.g., submerged arc)
73.1  DF  .~.~.~ Including electroslag welding
73.11  DF  .~.~.~.~ For coating
73.2  DF  .~.~.~ With granular flux supply
73.21  DF  .~.~.~.~ For deposition welding
74  DF  .~.~ Gas supply (e.g., by ingredient of electrode, by external source)
75  DF  .~.~.~ Nonconsumable electrode (e.g., atomic hydrogen)
76.1  DF  .~ For deposition welding (e.g., coating or building up)
76.11  DF  .~.~ With cooling means
76.12  DF  .~.~ Of multiple distinct layers
76.13  DF  .~.~ By spark discharge
76.14  DF  .~.~ By electric arc
76.15  DF  .~.~.~ With nonconsumable electrode
76.16  DF  .~.~.~ Plasma
76.17  DF  .~.~ By resistance heating
77  DF  .~.~ Cutting edges of tools
78.01  DF  .~ For bonding with pressure (e.g., resistance welding)
85.1  DF  .~.~ Brazing or soldering
85.12  DF  .~.~.~ Utilizing radiant energy
85.13  DF  .~.~.~.~ Methods
85.14  DF  .~.~.~ With filler metal in circuit
85.15  DF  .~.~.~.~ Methods
85.16  DF  .~.~.~ Electrically heated tool (e.g., electrodes, heaters, etc.)
85.17  DF  .~.~.~ Furnaces or enclosures
85.18  DF  .~.~.~ Wire lead bonders
85.19  DF  .~.~.~ Machine for predetermined operation
85.2  DF  .~.~.~ Fluxes or solders
85.21  DF  .~.~.~ Solder preforms
85.22  DF  .~.~.~ Methods
78.02  DF  .~.~ By solid-state bonding (e.g., diffusion)
78.11  DF  .~.~ Honeycomb
78.12  DF  .~.~.~ Methods
78.13  DF  .~.~ With additional heating device
78.14  DF  .~.~ With work cleaning means
78.15  DF  .~.~ With work cutting means
78.16  DF  .~.~ With work deforming means (e.g., tube sealing)
79  DF  .~.~ With conveyer for workpiece
80  DF  .~.~.~ Spot bond
81  DF  .~.~ Roller electrode
82  DF  .~.~.~ Roller moves over work
83  DF  .~.~.~ Methods
84  DF  .~.~.~ Electrode structure
86.1  DF  .~.~ By spot bonding
86.21  DF  .~.~.~ With hand-manipulative portable devices
86.22  DF  .~.~.~ With separately applied pressure and heat
86.23  DF  .~.~.~ With welding pressure controlled by the work support
86.24  DF  .~.~.~ With work orientation means
86.25  DF  .~.~.~ With significant electrode support
86.31  DF  .~.~.~.~ Having cooling means
86.32  DF  .~.~.~.~ Having magnetic force actuated electrode
86.33  DF  .~.~.~.~ Having adjustment means
86.41  DF  .~.~.~.~.~ With condition responsive control means
86.51  DF  .~.~.~.~.~.~ Responsive to pressure
86.61  DF  .~.~.~.~.~.~.~ By force balancing
86.7  DF  .~.~.~.~.~ For predetermined welding operation
86.8  DF  .~.~.~.~ Having interchangeable welding electrodes
86.9  DF  .~.~.~ For one-face welding
87  DF  .~.~.~ Multiple spot type
88  DF  .~.~.~ Electrode positionable along fixed bus bar (e.g., reaction bar type)
89  DF  .~.~.~ Fluid pressure actuated electrode
90  DF  .~.~.~ Plier or tong type
91.1  DF  .~.~.~ With condition responsive control of the welding process
91.2  DF  .~.~.~ Methods
91.21  DF  .~.~.~.~ Of welding through insulation
91.22  DF  .~.~.~.~ With additional heating to same spot
91.23  DF  .~.~.~.~ With work deforming
92  DF  .~.~.~.~ Current limitation (e.g., by interposed insulation)
93  DF  .~.~.~.~.~ By localized projection
94  DF  .~.~.~.~.~ By interposed button
95  DF  .~.~ Percussive
96  DF  .~.~.~ Methods
97  DF  .~.~ Flash
98  DF  .~.~.~ Stud
99  DF  .~.~.~.~ Methods
100  DF  .~.~.~ Methods
101  DF  .~.~ Butt
102  DF  .~.~.~ Extended seam
103  DF  .~.~.~ One part fed
104  DF  .~.~.~ Methods
105  DF  .~.~.~.~ Preparation of edges
106  DF  .~.~.~.~ By use of a bridging member (e.g., splice plate)
107  DF  .~.~.~.~ End or edge to surface
108  DF  .~.~ Systems of current supply
109  DF  .~.~.~ With indicator (e.g., recorder)
110  DF  .~.~.~ Controlled in response to current, voltage, or temperature
111  DF  .~.~.~ Repeat or interrupted current systems (e.g., multiple welds, multiple heated weld)
112  DF  .~.~.~ Stored energy discharge (e.g., inductive)
113  DF  .~.~.~.~ Condenser discharge
114  DF  .~.~.~ With space-discharge tube control (e.g., thyratron, ignitron)
115  DF  .~.~.~ Synchronous switching on and off
116  DF  .~.~.~ With transformer
117.1  DF  .~.~ Methods
118  DF  .~.~.~ Particular material (e.g., dissimilar, aluminum)
119  DF  .~.~ Electrodes (e.g., structure)
120  DF  .~.~.~ With cooling
121.11  DF  .~ By arc
121.12  DF  .~.~ Using electron beam
121.13  DF  .~.~.~ Welding
121.14  DF  .~.~.~.~ Methods
121.15  DF  .~.~.~ Deposition (e.g., sputtering)
121.16  DF  .~.~.~ Melting
121.17  DF  .~.~.~.~ Methods
121.18  DF  .~.~.~ Cutting
121.19  DF  .~.~.~.~ Etching or trimming
121.2  DF  .~.~.~.~.~ Methods
121.21  DF  .~.~.~ Chamber
121.22  DF  .~.~.~.~ Sealing
121.23  DF  .~.~.~.~ Monitoring
121.24  DF  .~.~.~ Nonvacuum environment
121.25  DF  .~.~.~ Shaping
121.26  DF  .~.~.~.~ With focusing
121.27  DF  .~.~.~.~ With electrode or gun structure
121.28  DF  .~.~.~ Position control
121.29  DF  .~.~.~.~ Swept or scanned
121.3  DF  .~.~.~.~ Condition responsive
121.31  DF  .~.~.~ Workpiece position control
121.32  DF  .~.~.~.~ Condition responsive
121.33  DF  .~.~.~ With fluid supply (e.g., shielding gas or coolant)
121.34  DF  .~.~.~ Power supply
121.35  DF  .~.~.~ Methods
121.36  DF  .~.~ Using plasma
121.37  DF  .~.~.~ Melting
121.38  DF  .~.~.~.~ Methods
121.39  DF  .~.~.~ Cutting
121.4  DF  .~.~.~.~ Etching
121.41  DF  .~.~.~.~.~ Methods
121.42  DF  .~.~.~.~.~ Rate control
121.43  DF  .~.~.~.~.~ With chamber
121.44  DF  .~.~.~.~ Methods
121.45  DF  .~.~.~ Welding
121.46  DF  .~.~.~.~ Methods
121.47  DF  .~.~.~ Spray coating
121.48  DF  .~.~.~ Plasma torch structure
121.49  DF  .~.~.~.~ Cooling system
121.5  DF  .~.~.~.~ Nozzle system
121.51  DF  .~.~.~.~ Gas supply system
121.52  DF  .~.~.~.~ Electrode structure
121.53  DF  .~.~.~.~ Consumable electrode
121.54  DF  .~.~.~ Control systems
121.55  DF  .~.~.~.~ Gas supply
121.56  DF  .~.~.~.~ Arc positioning
121.57  DF  .~.~.~.~ Arc ignition
121.58  DF  .~.~.~ With work holder
121.59  DF  .~.~.~ Methods
121.6  DF  .~.~ Using laser
121.61  DF  .~.~.~ Beam energy control
121.62  DF  .~.~.~.~ Condition responsive
121.63  DF  .~.~.~ Welding
121.64  DF  .~.~.~.~ Methods
121.65  DF  .~.~.~ Melting
121.66  DF  .~.~.~.~ Methods
121.67  DF  .~.~.~ Cutting
121.68  DF  .~.~.~.~ Etching or trimming
121.69  DF  .~.~.~.~.~ Methods
121.7  DF  .~.~.~.~ Hole punching
121.71  DF  .~.~.~.~.~ Methods
121.72  DF  .~.~.~.~ Methods
121.73  DF  .~.~.~ Shaping
121.74  DF  .~.~.~.~ With mirror
121.75  DF  .~.~.~.~ With lens
121.76  DF  .~.~.~ Multiple beams
121.77  DF  .~.~.~.~ With sing source
121.78  DF  .~.~.~ Beam position control
121.79  DF  .~.~.~.~ Path adjustment
121.8  DF  .~.~.~.~ Swept or scanned
121.81  DF  .~.~.~.~ Condition responsive
121.82  DF  .~.~.~ Workpiece position control
121.83  DF  .~.~.~ With monitoring
121.84  DF  .~.~.~ With fluid supply
121.85  DF  .~.~.~ Method
121.86  DF  .~.~.~ Chamber
122  DF  .~.~ Control of arc direction
123  DF  .~.~.~ Magnetic
124.01  DF  .~.~ With ignition by retraction
124.02  DF  .~.~ With gap control
124.03  DF  .~.~.~ By arc voltage
124.1  DF  .~.~ With automatic positioning of arc
124.21  DF  .~.~.~ Including work cutting
124.22  DF  .~.~.~ In response to work shape
124.31  DF  .~.~.~.~ Having carriage supported by work
124.32  DF  .~.~.~.~ Having variable welding head travel rate (e.g., gravity feed)
124.33  DF  .~.~.~.~ Having electrode angle control
124.34  DF  .~.~.~.~ By using probe means
124.4  DF  .~.~.~ In response to work position
124.5  DF  .~.~.~ In response to the transfer rate of the weld metal
125.1  DF  .~.~ With predetermined welding operation
125.11  DF  .~.~.~ For closed path welding (e.g., circumferential welding)
125.12  DF  .~.~.~ For oscillating electrode welding
126  DF  .~.~.~ Vertical work (e.g., horizontal seam in vertical wall)
127  DF  .~.~ Spot arc bonding (e.g., arc riveting)
128  DF  .~.~ With working of bonding metal (e.g., by peening)
129  DF  .~.~ Brazzing or soldering
130.01  DF  .~.~ Including circuits for monitoring arc parameters
130.1  DF  .~.~ Including arc-power supplies
130.21  DF  .~.~.~ With automatic output control (e.g., shortcircuit, infrared)
130.31  DF  .~.~.~.~ Responsive to arc voltage only
130.32  DF  .~.~.~.~ Responsive to arc current only
130.33  DF  .~.~.~.~ Responsive to both arc voltage and arc current
130.4  DF  .~.~.~ With arc ignition and stabilization arrangements
130.5  DF  .~.~.~ With predetermined time variation of arc voltage or current (e.g., programmed)
130.51  DF  .~.~.~.~ Pulsating or periodic output
132  DF  .~.~.~ Remote control
133  DF  .~.~.~ With generator (e.g., gas engine driven)
134  DF  .~.~.~.~ Electric motor driven
136  DF  .~.~ Welding
137 R  DF  .~.~.~ Process
137 PS  DF  .~.~.~.~ Power supply
137 WM  DF  .~.~.~.~ Weld metal composition
137.2  DF  .~.~ With consumable electrode device
137.31  DF  .~.~.~ Gun
137.41  DF  .~.~.~.~ Having fume extractor
137.42  DF  .~.~.~.~ Having gas flow limiting shape (e.g., gas diffuser)
137.43  DF  .~.~.~.~ Having spatter shield
137.44  DF  .~.~.~.~ Having integral electrode guide
137.51  DF  .~.~.~.~.~ With flexibility
137.52  DF  .~.~.~.~.~ With wear resistant liner
137.61  DF  .~.~.~.~ Having filler electrical contact structure
137.62  DF  .~.~.~.~ Having cooling means
137.63  DF  .~.~.~.~ Having supply connection means (e.g., quick disconnect)
137.7  DF  .~.~.~ Rate control
137.71  DF  .~.~.~.~ Circuits
137.8  DF  .~.~.~ Including filler wire deforming
137.9  DF  .~.~.~ Supply cables (e.g., for current, shielding gas, coolant)
138  DF  .~.~ Electrode holder (e.g., spring biased tong)
139  DF  .~.~.~ Plural adjustable electrodes (e.g., hand torch)
140  DF  .~.~.~ Spring jaw (e.g., sprung by electrode)
141  DF  .~.~.~.~ With separate actuator
142  DF  .~.~.~ Plunger jaw (e.g., screw actuated)
143  DF  .~.~.~.~ Spring biased
144  DF  .~.~.~ Positive grip
145.1  DF  .~ Weld rod structure
145.21  DF  .~.~ Nonconsumable
145.22  DF  .~.~ Flux cored
145.23  DF  .~.~ Flux coated
145.31  DF  .~.~.~ Partially
145.32  DF  .~.~.~ With wire wrap
145.41  DF  .~.~ Nonmetal cover
146.1  DF  .~ Weld rod composition
146.21  DF  .~.~ Nonconsumable
146.22  DF  .~.~ Nonferrous
146.23  DF  .~.~ Containing nickel, chromium, and iron
146.24  DF  .~.~ Metal deoxidizer or denitrogenizer
146.3  DD  .~.~.~ Particulate
146.31  DF  .~.~ Particulate
146.32  DF  .~.~.~ Alloying
146.41  DF  .~.~.~.~ Nickel or chromium
146.51  DF  .~.~.~ Containing carbide
146.52  DF  .~.~.~ Shielding
147  DF  .~.~ With eye shield
148  DF  .~ Bonding
149  DF  .~ With forging or shaping (e.g., of powder)
150 R  DF  .~.~ Upsetting
151  DF  .~.~.~ Anvil electrode
152  DF  .~.~.~ Simultaneous with heating
150 V  DF  .~.~.~ Riveting
153  DF  .~.~ Bending or twisting
154  DF  .~.~ Subsequent to heating
155  DF  .~ Endless strip
156  DF  .~ Rods and bars
157  DF  .~ Rivets
158  DF  .~ Work holders
159  DF  .~.~ Rotating supports
160  DF  .~.~ Mandrels (e.g., anvil)
161  DF  .~.~ Clamp
162  DF  .~ Methods
200  DF  HEATING DEVICES
201  DF  .~ Combined with diverse-type art device
202  DF  .~.~ Vehicle or vehicle component
203  DF  .~.~.~ Windshield or window
204  DF  .~.~.~ Steering device
205  DF  .~.~.~ Motor or engine
206  DF  .~.~.~.~ Manifold
207  DF  .~.~.~.~ Carburetor
208  DF  .~.~.~.~ Radiator or cooling system
209  DF  .~.~ Electrical devices
210  DF  .~.~.~ Crystal or other vibratory device
211  DF  .~.~ Apparel
212  DF  .~.~ Bed covering (e.g., blanket)
213  DF  .~.~ Static structure (e.g., building pavement, etc.)
214  DF  .~.~ Vending, dispensing, or display device
215  DF  .~.~ Shoe machinery
216  DF  .~.~ Printing or reproduction device
217  DF  .~.~ Chair, bed, or other body-supporting means
218  DF  .~.~ Table or cabinet
219  DF  .~.~ Mirror
220  DF  .~.~ Light means
221  DF  .~ Tool or instrument
222  DF  .~.~ Hair heaters
223  DF  .~.~.~ Singeing apparatus
224  DF  .~.~.~ Electrolytic
225  DF  .~.~.~ With heated clamp means (e.g., hand-held)
226  DF  .~.~.~ With heated casing
227  DF  .~.~ Hand-manipulative
228  DF  .~.~.~ With heat distribution means (i.e., heat applied to extended area)
229  DF  .~.~.~ With heated tip or other heat concentration means (i.e., heat applied to localized area)
230  DF  .~.~.~.~ With tip cooling, clamping, or lighting means
231  DF  .~.~.~.~ Convertible
232  DF  .~.~.~.~ Internal arc-type heating unit
233  DF  .~.~.~.~ Tip in electrical circuit
234  DF  .~.~.~.~.~ Work in circuit
235  DF  .~.~.~.~.~ With transformer secondary
236  DF  .~.~.~.~ Coil or loop-type heating element
237  DF  .~.~.~.~.~ Integral with tip
238  DF  .~.~.~.~.~ Detachable tip
239  DF  .~.~.~.~.~.~ Threaded
240  DF  .~.~.~ With power supply, voltage or current control, or connection and/or disconnection means
241  DF  .~.~.~.~ With thermal control means
242  DF  .~.~.~ Supports
243  DF  .~ Combined with pressure application means
244  DF  .~.~ Rotatable
245  DF  .~.~ Sole plate-type pressure application means (e.g., flatiron)
246  DF  .~.~.~ Combined with stand
247  DF  .~.~.~.~ With complementary electrical connector means to external circuit terminating in stand
248  DF  .~.~.~ With condition-responsive indicator
249  DF  .~.~.~ Convertible
250  DF  .~.~.~ With power supply, voltage or current-control means
251  DF  .~.~.~.~ Thermally responsive
252  DF  .~.~.~.~.~ Adjustable
253  DF  .~.~.~.~.~ Comprising fusible metal, expansible liquid, or bar means
254  DF  .~.~.~ With heating unit structure
255  DF  .~.~.~.~ Plural heating units
256  DF  .~.~.~ With electrical circuit completion or terminal structure
257  DF  .~.~.~.~ Automatically operated
258  DF  .~.~.~ With heat storage, exchange, or reflector means
259  DF  .~.~.~ Supporting devices
260  DF  .~ Resistive element: igniter type
261  DF  .~.~ With blower, suction, or other ignition facilitating means
262  DF  .~.~ With current control or external circuit connection or disconnection means
263  DF  .~.~.~ Automatic
264  DF  .~.~.~.~ Thermally responsive
265  DF  .~.~.~.~.~ Bimetallic or other flexible means
266  DF  .~.~.~ Resilient means
267  DF  .~.~ With housing casing or support means for igniter unit
268  DF  .~.~ With source of power or current
269  DF  .~.~ With indicating means
270  DF  .~.~ With igniter unit structure
383  DF  .~ Electric arc-type devices
384  DF  .~.~ With perforating or disintegrating means
385  DF  .~ Combined with container, enclosure, or support for material to be heated
386  DF  .~.~ Portable or mobile
387  DF  .~.~.~ Food conveying type (e.g., lunch box)
388  DF  .~.~ With means whereby material to be heated may be passed continuously through heated area (e.g., conveyor)
389  DF  .~.~ Revolving enclosure
390  DF  .~.~ Muffle-type enclosure
391  DF  .~.~ Oven type
392  DF  .~.~.~ Combined with additional material support
393  DF  .~.~.~ Oven performs plural diverse functions
394  DF  .~.~.~ With plural ovens
395  DF  .~.~.~ With plurality of separate heating units
396  DF  .~.~.~.~ Of diverse construction or functioning in diverse manners
397  DF  .~.~.~.~ Of different resistive values
398  DF  .~.~.~.~ Selectively energized
399  DF  .~.~.~ With heat energy transfer, distribution, or accumulator means
400  DF  .~.~.~.~ By convection
401  DF  .~.~.~ With steam generating means
402  DF  .~.~.~ With casing or support for heating unit or units
403  DF  .~.~.~.~ Retractable or detachable (from heated enclosure)
404  DF  .~.~.~.~ Hinged or adjustable (within the heated enclosure)
405  DF  .~.~.~.~ Including heat energy reflecting or directing means
406  DF  .~.~.~ With resistance heating means surrounding heating area
407  DF  .~.~.~.~ Embedded within or between walls of container
408  DF  .~.~.~ With resistance heating unit or units fixed enclosed by or located within heating area
409  DF  .~.~.~ With heating unit structure or composition
410  DF  .~.~.~.~ With plural section heating element
411  DF  .~.~.~.~ With infrared generating means
412  DF  .~.~.~ With current or voltage control or regulating means
413  DF  .~.~.~.~ Automatically responsive to condition of heating area
414  DF  .~.~.~ With switch or other external circuit completing means
415  DF  .~.~ Deep well
416  DF  .~.~.~ Convertible
417  DF  .~.~.~ With plurality of separate heating units
418  DF  .~.~.~ With adjustable position heating unit or units
419  DF  .~.~.~ With current control or external circuit opening or closing means
420  DF  .~.~ Crucible or furnace type (i.e., adapted to hold meltable material)
421  DF  .~.~.~ Melting pot
422  DF  .~.~.~ With plural separate heating units
423  DF  .~.~.~ With protection means for heating unit or switch
424  DF  .~.~.~ With resistance heating element surrounding or embedded within walls of container
425  DF  .~.~.~ With current or voltage control means
426  DF  .~.~.~ With significant heating unit structure or composition
427  DF  .~.~.~.~ Container comprises resistance heating element
428  DF  .~.~ Plural containers
429  DF  .~.~ With vessel and stand
430  DF  .~.~.~ With heat storage or transfer means
431  DF  .~.~.~ With pressure generating or maintaining means
432  DF  .~.~.~ Vessel separable from stand
433  DF  .~.~.~ With heating unit unitary with or attached to the stand
434  DF  .~.~.~.~ Adjustable relative to vessel or stand
435  DF  .~.~.~ With external electrical circuit connection or disconnection means
436  DF  .~.~.~ With heating unit attaching or support means
437  DF  .~.~.~.~ Immersible
438  DF  .~.~ With vessel
439  DF  .~.~.~ With heat storage or transfer means
440  DF  .~.~.~ With pressure generating or maintaining means (e.g., pressure cooker)
441  DF  .~.~.~ With temperature or current control means
442  DF  .~.~.~.~ Adjustable
443.1  DF  .~.~ Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.)
444.1  DF  .~.~.~ Material is an electronic semiconductor device
445.1  DF  .~.~.~ With indicator
446.1  DF  .~.~.~ Having sensor
447.1  DF  .~.~.~.~ Responsive to presence of material (e.g., food, a cooking vessel, etc.)
448.11  DF  .~.~.~.~ Responsive to temperature
448.12  DF  .~.~.~.~.~ Having microprocessor to control output of the heating device
448.13  DF  .~.~.~.~.~ Of material (e.g., food, a cooking vessel, etc.)
448.14  DF  .~.~.~.~.~.~ Using thermistor-type sensor
448.15  DF  .~.~.~.~.~.~ Using temperature expansible fluid-type sensor
448.16  DF  .~.~.~.~.~.~ Using bimetallic member-type sensor
448.17  DF  .~.~.~.~.~ Of the exposed horizontal planar support surface
448.18  DF  .~.~.~.~.~.~ Using bimetallic member-type sensor
448.19  DF  .~.~.~.~.~ By rod or wire in a tube (e.g., thermo-cutoff probe, etc.)
449.1  DF  .~.~.~ Heating by convection
450.1  DF  .~.~.~ For direct contact with food (e.g., grill, griddle, etc.)
451.1  DF  .~.~.~ Having support for a heating unit
452.11  DF  .~.~.~.~ Frame, casing, or housing (e.g., range top, stove top, countertop, etc.)
452.12  DF  .~.~.~.~.~ Supporting an imperforate exposed horizontal planar surface to overlie the heating unit (e.g., cooktop, etc.)
452.13  DF  .~.~.~.~.~ Convertible (e.g., to an oven, to storage, etc.)
453.11  DF  .~.~.~.~ Allowing heating unit movement
453.12  DF  .~.~.~.~.~ Enabling the exposed horizontal planar surface to conform to material having other than a planar surface
453.13  DF  .~.~.~.~.~ Using hinge for tilting or pivoting
453.14  DF  .~.~.~.~.~.~ Of pintle and gudgeon type
453.15  DF  .~.~.~.~.~.~.~ Having an axis at an acute or obtuse angle to the exposed horizontal planar surface
454.11  DF  .~.~.~.~ Bracket having a hub and three or more angularly spaced horizontal projections (e.g., a spider, etc.)
454.12  DF  .~.~.~.~.~ Having means to secure to the heating unit or a surrounding support
455.11  DF  .~.~.~.~ Pan or cup (e.g., a drip pan, etc.)
455.12  DF  .~.~.~.~.~ Reflector-type
456.1  DF  .~.~.~.~ Ring having a flange overlaying hole in a surrounding support surface
457.1  DF  .~.~.~ Having direct manually actuated electrical switch
458.1  DF  .~.~.~ Having electrical connection
459.1  DF  .~.~.~.~ Receptacle (e.g., socket, an insulator block, a terminal block, etc.)
460.1  DF  .~.~.~ Heating element gapped from underside of the exposed horizontal support surface (e.g., ceramic plate, radiation-type, etc.)
461.1  DF  .~.~.~.~ Support for the heating element
462.1  DF  .~.~.~.~ Plural heating elements
463.1  DF  .~.~.~ Formed by tubularly shaped heating unit
464.1  DF  .~.~.~.~ Having plural tubular heating units
465.1  DF  .~.~.~ Heating element contacting planar underside of the exposed horizontal planar support surface (e.g., sheet metal, etc.)
466.1  DF  .~.~.~.~ Foil or film-type of heating element
467.1  DF  .~.~.~.~ Support for the heating element
468.1  DF  .~.~.~ Heating element is embedded in the exposed horizontal planar support surface
468.2  DF  .~.~.~ Heating element is in a groove formed on underside of the exposed horizontal planar support surface (e.g., cast metal plate, etc.)
469  DF  .~.~ Cylindrical or roller-type support for material to be heated
470  DF  .~.~.~ With plural heating units
471  DF  .~.~.~ With external electrical circuit completion means
472  DF  .~ Plural functions simultaneously or convertible
473  DF  .~.~ To nonheating device
474  DF  .~.~ To diverse-type electric heating device
475  DF  .~ With plural heat utilization means (single heater)
476  DF  .~ Plural separate heating devices
477  DF  .~.~ With common power supply or current control means
478  DF  .~.~ With unitary housing, support, or casing means
479  DF  .~.~ Diverse type (each electric)
480  DF  .~.~ Selectively activated
481  DF  .~ With protective means for heater
482  DF  .~ With power supply and voltage or current regulation or current control means
483  DF  .~.~ Controlling or regulating plural separate distinct heating resistance elements(i.e., one control system for all elements)
484  DF  .~.~.~ Of diverse resistance characteristics or value
485  DF  .~.~.~ With total current or power limiting means
486  DF  .~.~.~ Selectively, sequentially or alternately
487  DF  .~.~.~.~ With indicator means
488  DF  .~.~ With voltage limitation, conversion, or adapting means
489  DF  .~.~ Combined manual and automatic regulating or control means
490  DF  .~.~ Automatic regulating or control means
491  DF  .~.~.~ Combined (e.g., electromechanical and thermal)
492  DF  .~.~.~ Comprising timing or cycling means
493  DF  .~.~.~.~ Electromechanical
494  DF  .~.~.~ Thermally responsive
495  DF  .~.~.~.~ Thermomagnetic
496  DF  .~.~.~ Pressure responsive
497  DF  .~.~.~ Comprising voltage and/or current measuring and comparing or combining means
498  DF  .~.~.~.~ Including follow-up servo means
499  DF  .~.~.~.~ Including bridge means
500  DF  .~.~.~ Including electron or glow-discharge tube means
501  DF  .~.~.~ Including semiconductor means (e.g., transistor)
502  DF  .~.~.~ Utilizing light-sensitive and/or responsive means
503  DF  .~.~.~ Inductive reactor means (e.g., auto transformer)
504  DF  .~.~.~ Comprising variable resistance means
505  DF  .~.~.~.~ Comprising nonlinear or negative temperature coefficient resistance means
506  DF  .~.~.~ With signal or indicating means
507  DF  .~ With current connection and/or disconnection means (e.g., switch)
508  DF  .~.~ Plural means intermittently or selectively operated
509  DF  .~.~ Automatically operated
510  DF  .~.~.~ Thermally responsive
511  DF  .~.~.~.~ With auxiliary heating means for thermal switch means
512  DF  .~.~.~.~ Comprising linearly expansible metal
513  DF  .~.~.~.~ Comprising expansible fluid (e.g., alcohol or mercury)
514  DF  .~.~.~.~ With solenoid means
515  DF  .~.~.~.~ Adjustable means
516  DF  .~.~.~.~ Insertable into or in direct contact with heated material
517  DF  .~.~.~.~ Fusible link
518  DF  .~.~.~ Responsive to weight, position, or presence of body to be heated
519  DF  .~.~.~ Including electromagnetic relay means
520  DF  .~ With heater-unit housing, casing, or support means (e.g., frame and single sheet)
521  DF  .~.~ Including or comprising holding or support means for material to be heated
522  DF  .~.~ Housing, casing, or support performs plural diverse functions (e.g., window)
523  DF  .~.~ Housing, casing, or support insertable into material or space to be heated (e.g., immersion type)
524  DF  .~.~ Comprising hinged or separable compartment (e.g., waffle iron type)
525  DF  .~.~.~ With plurality of or sectional heating means
526  DF  .~.~ With means for attaching housing or casing to an external device (e.g., magnetic or vacuum)
527  DF  .~.~.~ Body-supported (e.g., human body)
528  DF  .~.~ Flexible or resilient (e.g., warming pad)
529  DF  .~.~.~ Cloth or other fabric
530  DF  .~.~ With heat storage or transfer means (vanes)
531  DF  .~.~ With thermal insulation or cooling means
532  DF  .~.~ With open frame or grid-type support
533  DF  .~.~ Portable (e.g., with handle)
534  DF  .~.~ Rigid tubular housing, casing, or support (e.g., flattened tube)
535  DF  .~.~ Specially formed or adapted to fit material to be heated (e.g., a pipe)
536  DF  .~.~ With heating unit mounting or attaching means
537  DF  .~.~.~ Plural units combined with single casing housing or support
538  DF  .~ With heating unit structure
539  DF  .~.~ Comprising plural separate and distinct resistive elements
540  DF  .~.~ With heat storage or transfer means (e.g., fins or plate)
541  DF  .~.~ With terminal or connector means (e.g., to external circuit means)
542  DF  .~.~ With resistive-element attaching, securing or electrical insulation means
543  DF  .~.~.~ Comprising coating printed or deposited on core sheath or support means
544  DF  .~.~.~ Element embedded within or completely surrounded by core, sheath, or support means
545  DF  .~.~.~ Resistive element interwoven with fabric support
546  DF  .~.~ Core, sheath, or support means for heating element
547  DF  .~.~.~ Comprising material to be heated
548  DF  .~.~.~ Of particular construction or material
549  DF  .~.~.~.~ Flexible
550  DF  .~.~.~.~ Sectional or interconnectable insulator means
551  DF  .~.~.~.~ Gasket or wafer-type insulator means
552  DF  .~.~ Heating element structure
553  DF  .~.~.~ Of particular construction and/or material (e.g., infrared generator)