US Patent Class 361
ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES
2  DF  .~ Arc suppression at switching point (i.e., includes solid-state switch)
3  DF  .~.~ Synchronized or sequential opening or closing
4  DF  .~.~.~ Counter electromotive force
5  DF  .~.~.~ With current sensitive control circuit
6  DF  .~.~.~ With voltage sensitive control circuit
7  DF  .~.~.~ With combined voltage and current sensitive control circuit
8  DF  .~.~.~ Shunt bypass
9  DF  .~.~.~.~ With sequentially inserted impedance
10  DF  .~.~ By inserting series impedance
11  DF  .~.~.~ Nonlinear impedance
12  DF  .~.~.~ By arc stretching (e.g., horn gap)
13  DF  .~.~ Shunt bypass of main switch
14  DF  .~.~ Arc blowout for main breaker contact (e.g., electromagnet, gas, fluid, etc.)
15  DF  .~ Capacitor protection
16  DF  .~.~ Series connected capacitors
17  DF  .~.~ Shunt connected capacitors
18  DF  .~ Voltage regulator protective circuits
19  DF  .~ Superconductor protective circuits
20  DF  .~ Generator protective circuits
21  DF  .~.~ Voltage responsive
22  DF  .~ Compressor protective circuits
23  DF  .~ Motor protective condition responsive circuits
24  DF  .~.~ Current and temperature
25  DF  .~.~ Motor temperature
26  DF  .~.~.~ With bimetallic sensor
27  DF  .~.~.~ With thermistor sensor
28  DF  .~.~ With time delay
29  DF  .~.~.~ During energization of motor
30  DF  .~.~ Current and voltage
31  DF  .~.~ Current
32  DF  .~.~.~ Bimetallic element
33  DF  .~.~ Voltage
34  DF  .~.~.~ Bimetallic element
35  DF  .~ Transformer protection
36  DF  .~.~ With differential sensing means
37  DF  .~.~ With temperature or pressure sensing means
38  DF  .~.~ Transformer with structurally combined protective device
39  DF  .~.~.~ With lightning arrester and fuse
40  DF  .~.~.~ With lightning arrester (e.g., spark gap)
41  DF  .~.~.~ With fuse
42  DF  .~ Ground fault protection
43  DF  .~.~ Fault suppression (e.g., Petersen coil)
44  DF  .~.~ With differential sensing in a polyphase system
45  DF  .~.~ With differential sensing in a single phase system
46  DF  .~.~.~ With more than two wires
47  DF  .~.~ In a polyphase system
48  DF  .~.~.~ With more than three wires
49  DF  .~.~ In a single phase system
50  DF  .~.~.~ With more than two wires
51  DF  .~ Overspeed responsive
52  DF  .~ By regulating source or load (e.g., generator field killed)
53  DF  .~.~ Prime mover control
54  DF  .~ Load shunting by fault responsive means (e.g., crowbar circuit)
55  DF  .~.~ Disconnect after shunting
56  DF  .~.~ Voltage responsive
57  DF  .~.~ Current responsive
58  DF  .~ Impedance insertion
59  DF  .~ Circuit automatically reconnected only after the fault is cleared
60  DF  .~.~ With differential voltage comparison across the circuit interrupting means
61  DF  .~.~ Reclosing of the nonfaulty phases of a polyphase system
62  DF  .~ Feeder protection in distribution networks
63  DF  .~.~ With current responsive fault sensor
64  DF  .~.~.~ With communication between feeder disconnect points
65  DF  .~.~ With current and voltage responsive fault sensors
66  DF  .~.~.~ With communication between feeder disconnect points
67  DF  .~ Series connected sections with faulty section disconnect
68  DF  .~.~ With communication between disconnect points
69  DF  .~.~.~ Pilot wire communication
70  DF  .~.~ Constant current system
71  DF  .~ Automatic reclosing
72  DF  .~.~ With lockout means
73  DF  .~.~.~ Including timer reset before lockout
74  DF  .~.~ Continuous
75  DF  .~.~.~ With time delay before reclosing
76  DF  .~ With phase sequence network analyzer
77  DF  .~ Reverse phase responsive
78  DF  .~ With specific quantity comparison means
79  DF  .~.~ Voltage and current
80  DF  .~.~.~ Distance relaying
81  DF  .~.~.~.~ With communication means between disconnect points
82  DF  .~.~.~ Reverse energy responsive (e.g., directional)
83  DF  .~.~.~ With time delay protective means
84  DF  .~.~ Reverse energy responsive (e.g., directional)
85  DF  .~.~ Phase
86  DF  .~.~ Voltage
87  DF  .~.~ Current
88  DF  .~ With specific voltage responsive fault sensor
89  DF  .~.~ With time delay protective means
90  DF  .~.~ Overvoltage and undervoltage
91.1  DF  .~.~ Overvoltage
91.2  DF  .~.~.~ With resistor sensor
91.3  DF  .~.~.~ Including time delay
91.4  DF  .~.~.~ Including photo-coupling (e.g., photo-receptors, photo-emitters, etc.)
91.5  DF  .~.~.~ Including P-N junction (e.g., a diode, a zener diode, or transistor)
91.6  DF  .~.~.~.~ With zener diode sensor
91.7  DF  .~.~.~ Protection by snubber circuitry
91.8  DF  .~.~.~ Protection for thyristor
92  DD  .~.~ Undervoltage
93.1  DF  .~ With specific current responsive fault sensor
93.2  DF  .~.~ Digital control
93.3  DF  .~.~ Rating plug
93.4  DF  .~.~ Automatic reset after trip
93.5  DF  .~.~ Transformer and resistor sensors
93.6  DF  .~.~ Transformer sensor (i.e., toroidal current sensor)
93.7  DF  .~.~ Resistor sensor
93.8  DF  .~.~ Thermal sensing
93.9  DF  .~.~ Current limiting
94  DF  .~.~ With time delay protective means
95  DF  .~.~.~ With instantaneous override
96  DF  .~.~.~.~ With multiple timing characteristics (e.g., short, long)
97  DF  .~.~.~ With multiple timing characteristics
98  DF  .~.~.~ Transistorized
99  DF  .~.~.~ Combined thermal-electromagnetic relay
100  DF  .~.~ With semiconductor circuit interrupter (e.g., SCR, Triac, Tunnel Diode, etc.)
101  DF  .~.~.~ With transistor circuit interrupter
102  DF  .~.~ With mechanical circuit breaker
103  DF  .~ Circuit interruption by thermal sensing
104  DF  .~.~ With fuse
105  DF  .~.~ With bimetallic element
106  DF  .~.~ With thermistor
107  DF  .~ With specific transmission line (e.g., guarded)
108  DF  .~.~ Plural conductors in single sheath (e.g., compound)
109  DF  .~ Too large fault makes breaker inoperative
110  DF  .~ Transient nonresponsive (e.g., ignores surge on transmission line)
111  DF  .~ Transient responsive
112  DF  .~ With space discharge means
113  DF  .~ With tuned circuit
114  DF  .~ With manual or automatic opening of breaker and manual reclose
115  DF  .~ With specific circuit breaker or control structure
116  DF  .~.~ Pneumatically operated circuit breaker
117  DF  .~ High voltage dissipation (e.g., lightning arrester)
118  DF  .~.~ Surge prevention (e.g., choke coil)
119  DF  .~.~.~ In communication systems
120  DF  .~.~ Vacuum or gas filled space discharge
121  DF  .~.~ Fluid (e.g., mercury, quenching)
122  DF  .~.~.~ Electrolytic
123  DF  .~.~.~ Gas blast
124  DF  .~.~ Thermal (e.g., fusible, bimetallic)
125  DF  .~.~.~ With cutout (e.g., blowout type)
126  DF  .~.~ Current limiting material in discharge path
127  DF  .~.~.~ Nonlinear material (e.g., valve type)
128  DF  .~.~.~.~ With plural gaps in discharge path
129  DF  .~.~ Plural gaps with common electrode
130  DF  .~.~ Plural gaps serially connected
131  DF  .~.~ Combined (e.g., with disconnect switch)
132  DF  .~.~.~ With line supporting insulator
133  DF  .~.~ With magnetic means (e.g., electromagnet)
134  DF  .~.~.~ Arc stretching (e.g., blowout)
135  DF  .~.~.~.~ By separating contacts
136  DF  .~.~.~ For grounding line
137  DF  .~.~ Horn gap
138  DF  .~.~.~ With resistance insertion
139  DF  CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES
140  DF  .~ Including compensation for thermal change of electromagnetic device
141  DF  .~ Including superconductivity
142  DF  .~ Including housing
143  DF  .~ Systems for magnetizing, demagnetizing, or controlling the magnetic field
144  DF  .~.~ For lifting or holding
145  DF  .~.~.~ Magnetic chuck-type
146  DF  .~.~ Systems for magnetic field stabilization or compensation
147  DF  .~.~ With permanent magnet
148  DF  .~.~.~ Calibration or permanent magnet
149  DF  .~.~ Demagnetizing
150  DF  .~.~.~ Television degaussing
151  DF  .~.~.~ Magnetic tape
152  DF  .~.~ Including particular drive circuit
153  DF  .~.~.~ Pulse initiated
154  DF  .~.~.~ Including means to establish plural distinct current levels (e.g., high, low)
155  DF  .~.~.~.~ With capacitor charging or discharging through coil
156  DF  .~.~.~ With capacitor charging or discharging through coil
157  DF  .~ Including instrument (e.g., meter-relay)
158  DF  .~.~ Temperature indicating instrument
159  DF  .~ Including means for using, or compensating for, the induced EMF of the electromagnetic device
160  DF  .~ For relays or solenoids
161  DF  .~.~ Including thermal device
162  DF  .~.~.~ Thermoelectric
163  DF  .~.~.~ Bimetallic element
164  DF  .~.~.~.~ Including heater
165  DF  .~.~.~ Thermistor
166  DF  .~.~ Plural relays or solenoids sequentially operated
167  DF  .~.~.~ Alternately operated
168.1  DF  .~.~.~ Pulse responsive
169.1  DF  .~.~.~.~ Including electronic element
170  DF  .~.~ Condition responsive (e.g., external circuit condition)
171  DF  .~.~.~ Code responsive
172  DF  .~.~.~.~ Including electronic element
173  DF  .~.~.~ Light
174  DF  .~.~.~.~ Light sensor controls its light path
175  DF  .~.~.~.~ Including electronic element
176  DF  .~.~.~.~.~ Plural light sensors
177  DF  .~.~.~.~ Plural light sensors
178  DF  .~.~.~ Fluid (e.g., liquid level, humidity)
179  DF  .~.~.~ Proximity or contact
180  DF  .~.~.~.~ Metal presence or absence responsive
181  DF  .~.~.~.~ Capacitance change-type
182  DF  .~.~.~ Frequency (e.g., audio, radio)
183  DF  .~.~.~.~ Plural relays or solenoids as loads
184  DF  .~.~.~.~ Specific frequency responsive relay
185  DF  .~.~.~ Phase
186  DF  .~.~.~ Pulse
187  DF  .~.~.~ Voltage or current level discriminators
188  DF  .~.~.~ Variable impedance
189  DF  .~.~ Plural switches in control circuit
190  DF  .~.~.~ Including electronic switch
191  DF  .~.~ Plural relay or solenoid load selectively operated
192  DF  .~.~.~ Including interlock
193  DF  .~.~.~.~ Electronic interlock
194  DF  .~.~ Holding means
195  DF  .~.~ Time delay
196  DF  .~.~.~ Including semiconductor device connected to timing element
197  DF  .~.~.~.~ Threshold device (e.g., zener, schockley diode)
198  DF  .~.~.~.~.~ Including three or more electrodes (e.g., unijunction)
199  DF  .~.~.~ Including electric discharge device
200  DF  .~.~.~.~ Threshold device (neon tube)
201  DF  .~.~.~.~.~ Including thyratron
202  DF  .~.~.~ Electromechanical delay means
203  DF  .~.~ With oscillator
204  DF  .~.~ With magnetic amplifier or saturable reactor
205  DF  .~.~ Threshold device (e.g., SCR, thyratron)
206  DF  .~.~ Particular relay or solenoid
207  DF  .~.~.~ Electrostatic
208  DF  .~.~.~ Polarized
209  DF  .~.~.~ Alternating current type
210  DF  .~.~.~ Plural coils
211  DF  CONTROL CIRCUITS FOR NONELECTROMAGNETIC TYPE RELAY (E.G., THERMAL RELAYS)
212  DF  DISCHARGING OR PREVENTING ACCUMULATION OF ELECTRIC CHARGE (E.G., STATIC ELECTRICITY)
213  DF  .~ By charged gas irradiation
214  DF  .~ Of paper or paper handling machine
215  DF  .~ Of storage or hazardous area or fluid handling
216  DF  .~ Structurally combined with building or vehicle
217  DF  .~.~ With external structure of vehicle
218  DF  .~.~.~ Aircraft
219  DF  .~.~.~ Chain-type grounding means
220  DF  .~ Specific conduction means or dissipator
221  DF  .~.~ Brush- or roller-type structure
222  DF  .~.~ Rod-type structure
223  DF  .~.~ Shoe type
224  DF  .~.~.~ Integral with shoe
225  DF  ELECTRIC CHARGING OF OBJECTS OR MATERIALS
226  DF  .~ Particulate matter (e.g., liquids with suspended particles)
227  DF  .~.~ For spray production
228  DF  .~.~.~ Liquid type
229  DF  .~ By charged gas irradiation
230  DF  ELECTRIC CHARGE GENERATING OR CONDUCTING MEANS (E.G., CHARGING OF GASES)
231  DF  .~ Modification of environmental electric charge
232  DF  .~ For application to living beings
233  DF  .~ Use of forces of electric charge or field
234  DF  .~.~ Pinning
235  DF  .~ With specific power supply
236  DF  ELECTRICAL SPEED SIGNAL PROCESSING SYSTEMS
237  DF  .~ With centrifugal weight means
238  DF  .~ Antislip detection and circuitry
239  DF  .~ With speed analog electrical signal
240  DF  .~ Including frequency generators
241  DF  .~ Two position (e.g., on-off)
242  DF  .~ With speed comparison
243  DF  .~ Synchronization of shafts
244  DF  .~.~ Phase comparison
245  DF  POLARITY REVERSING
246  DF  .~ Automatic
247  DF  IGNITING SYSTEMS
248  DF  .~ For explosive devices
249  DF  .~.~ With sequential firing by electronic switching
250  DF  .~.~ With sequential firing by mechanical switching
251  DF  .~.~ With capacitor discharging into explosive device
252  DF  .~.~ With electromechanical power source
253  DF  .~ For electric spark ignition
254  DF  .~.~ With electromagnet control means
255  DF  .~.~.~ Including spark electrode make-break
256  DF  .~.~ With capacitor discharging into sparking transformer
257  DF  .~.~ With capacitor discharge into spark gap
258  DF  .~.~ With electromechanical generator
259  DF  .~.~.~ With permanent magnet
260  DF  .~.~.~ With piezoelectric element
261  DF  .~.~ With mechanical arrangement for spark electrode make-break
262  DF  .~.~ With one spark electrode which is hand held
263  DF  .~.~ With spark coil or transformer
264  DF  .~ For incandescent ignition
265  DF  .~.~ With electromagnet control means
266  DF  .~.~ With helical heating element
267  DF  DEMAGNETIZING SYSTEMS AND PROCESSES
268  DF  TRANSFORMERS AND INDUCTORS WITH INTEGRAL SWITCH, CAPACITOR, OR LOCK (E.G., IGNITION COIL)
269  DF  .~ With lock for preventing unauthorized use
270  DF  .~ With capacitor element
271  DF  ELECTROSTATIC CAPACITORS
272  DF  .~ With protection or compensating means
273  DF  .~.~ Self-healing
274.1  DF  .~.~ Temperature
274.2  DF  .~.~.~ With fluid cooling means
274.3  DF  .~.~.~ With heat sink
275.1  DF  .~.~ For electrical irregularities
275.2  DF  .~.~.~ With over-pressure breakaway fuse
275.3  DF  .~.~.~ With resistance element
275.4  DF  .~.~.~ With thermal fuse
276  DF  .~ Cryogenic
277  DF  .~ Variable
278  DF  .~.~ With significant electrode or terminal feature
279  DF  .~.~ Gas or vacuum dielectric
280  DF  .~.~ Responsive to external condition
281  DF  .~.~.~ Electrical
282  DF  .~.~.~ Thermal
283.1  DF  .~.~.~ Pressure
283.2  DF  .~.~.~.~ By displacement of stylus or lever
283.3  DF  .~.~.~.~ By differential capacitor
283.4  DF  .~.~.~.~ By diaphragm
284  DF  .~.~.~ Liquid level
285  DF  .~.~.~ Fluid flow
286  DF  .~.~.~ Humidity
287  DF  .~.~ Mechanically variable
288  DF  .~.~.~ Push button
289  DF  .~.~.~ Motor driven
290  DF  .~.~.~ By varying distance between electrodes
291  DF  .~.~.~.~ Compression type
292  DF  .~.~.~ By varying effective area of electrode
293  DF  .~.~.~.~ Disk trimmer
294  DF  .~.~.~.~ Direct travel piston type
295  DF  .~.~.~.~ Piston trimmer
296  DF  .~.~.~.~ Sliding plates
297  DF  .~.~.~.~ Spiral or helical plates
298.1  DF  .~.~.~.~ Rotary plates
299.1  DF  .~.~.~.~.~ Plural capacitors
299.2  DF  .~.~.~.~.~.~ Details of electrical connecting means (e.g., terminal or lead)
299.3  DF  .~.~.~.~.~.~ Details of mounting means
299.4  DF  .~.~.~.~.~.~ With adjustment means
299.5  DF  .~.~.~.~.~.~ Details of insulator feature
298.2  DF  .~.~.~.~.~ Details of plate feature
298.3  DF  .~.~.~.~.~ Details of dielectric
298.4  DF  .~.~.~.~.~ Details of electrical connecting means (e.g., terminal or lead)
298.5  DF  .~.~.~.~.~ With adjustment means
300  DF  .~.~.~ With controlling or indicating means
301.1  DF  .~ Fixed capacitor
301.2  DF  .~.~ Special type (e.g., "bypass" type)
301.3  DF  .~.~ Encapsulated
301.4  DF  .~.~ Stack
301.5  DF  .~.~ Wound
302  DF  .~.~ Feed through
303  DF  .~.~ Significant electrode feature
304  DF  .~.~.~ Non-self-supporting electrodes
305  DF  .~.~.~ Material
306.1  DF  .~.~ Details of electrical connection means (e.g., terminal or lead)
306.2  DF  .~.~.~ For decoupling type capacitor
306.3  DF  .~.~.~ For multilayer capacitor
307  DF  .~.~.~ Lead extends into body of capacitor
308.1  DF  .~.~.~ Lead attached to edge of capacitor
308.2  DF  .~.~.~.~ Cap
308.3  DF  .~.~.~.~ Wire
309  DF  .~.~.~.~ Metallized terminal
310  DF  .~.~.~ Lead extends around at least a portion of capacitor
311  DF  .~.~ Solid dielectric
312  DF  .~.~.~ Plural dielectrics
313  DF  .~.~.~.~ Layered
314  DF  .~.~.~.~ Impregnated
315  DF  .~.~.~.~.~ With specific impregnant
316  DF  .~.~.~.~.~.~ Including wax
317  DF  .~.~.~.~.~.~ Including halogen (e.g., chlorinated)
318  DF  .~.~.~.~.~.~.~ With stabilizer or modifying substance
319  DF  .~.~.~.~.~ With stabilizer or modifying substance
320  DF  .~.~.~.~ Ceramic and glass
321.1  DF  .~.~.~ Ceramic, glass, or oxide particles
321.2  DF  .~.~.~.~ With multilayer ceramic capacitor
321.3  DF  .~.~.~.~.~ Including metallization coating
321.4  DF  .~.~.~.~.~ Composition
321.5  DF  .~.~.~.~ Composition
321.6  DF  .~.~.~.~ With tubular capacitor
322  DF  .~.~.~.~ Oxide film
323  DF  .~.~.~ Plastic
324  DF  .~.~.~ Fibrous or fabric (e.g., paper, etc.)
325  DF  .~.~.~ Mica
326  DF  .~.~ Vacuum or gas dielectric
327  DF  .~.~ Liquid dielectric
328  DF  .~.~ Multiple capacitors
329  DF  .~.~.~ Distinct physically
330  DF  .~.~.~ Shared electrode
600  DF  HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS
601  DF  .~ For electrical power distribution systems and devices
602  DF  .~.~ Distribution station (i.e., substation)
603  DF  .~.~.~ Having transformer
604  DF  .~.~.~ Gas insulated
605  DF  .~.~ Electrical switchgear
606  DF  .~.~.~ Truck type
607  DF  .~.~.~.~ With interlock
608  DF  .~.~.~ Drawer type
609  DF  .~.~.~.~ With interlock
610  DF  .~.~.~ Pivoted support means
611  DF  .~.~.~ Busbar arrangements
612  DF  .~.~.~.~ Gas insulated
613  DF  .~.~.~.~ Liquid insulated
614  DF  .~.~.~.~ With plural removable control units in housing
615  DF  .~.~.~ With interlock
616  DF  .~.~.~.~ Door or cover type
617  DF  .~.~.~.~ Shutter type
618  DF  .~.~.~ Gas insulated
619  DF  .~.~.~ Having gas circuit breaker
620  DF  .~.~.~ Having transformer
621  DF  .~.~.~ Having isolating switch
622  DF  .~.~ Distribution or control unit
623  DF  .~.~.~ Having transformer
624  DF  .~.~.~ Having busbar arrangement
625  DF  .~.~.~ Portable
626  DF  .~.~.~ Having fuse or relay
627  DF  .~.~ Distribution or control panel board
628  DF  .~.~.~ With switches and fuses
629  DF  .~.~.~.~ Unit block
630  DF  .~.~.~ With fuses
631  DF  .~.~.~ With switches
632  DF  .~.~.~.~ With switch actuating arrangements
633  DF  .~.~.~ Plugboards
634  DF  .~.~.~ With circuit breaker arrangements
635  DF  .~.~.~.~ With discriminating means
636  DF  .~.~.~.~ Plug-in or removable
637  DF  .~.~.~ Busbar or conductor arrangements
638  DF  .~.~.~.~ U-shaped member
639  DF  .~.~.~.~ With horizontal busbar
640  DF  .~.~.~.~ With removable or plug-in connection
641  DF  .~.~ Electrical service distribution box
642  DF  .~.~.~ With fuse
643  DF  .~.~.~ With switch
644  DF  .~.~.~ Including panel board
645  DF  .~.~.~.~ Adjustable panel
646  DF  .~.~.~.~ With fuse support means
647  DF  .~.~.~.~ With switch support means
648  DF  .~.~.~.~ Busbar arrangements
649  DF  .~.~.~.~.~ U-shaped member
650  DF  .~.~.~.~.~ Spaced parallel relationship
651  DF  .~.~.~.~ Panel board corner mountings
652  DF  .~.~.~.~ Circuit breaker supporting arrangements
653  DF  .~.~.~.~.~ With discriminating means
654  DF  .~.~.~.~.~ With tamper prevention means
655  DF  .~.~.~.~.~ Having two row arrangement
656  DF  .~.~.~.~.~ With plug-in circuit breakers
657  DF  .~.~.~ With removable member
658  DF  .~.~.~ With plastic enclosure or support
659  DF  .~.~ For electricity service meter
660  DF  .~.~.~ Plural
661  DF  .~.~.~ With meter circuit controller
662  DF  .~.~.~.~ Bypass arrangement
663  DF  .~.~.~.~ With transformer or circuit breaker
664  DF  .~.~.~ Meter mounting arrangements
665  DF  .~.~.~.~ Adaptable meter supports
666  DF  .~.~.~.~ Retractable or detachable meter support
667  DF  .~.~.~.~ Removable cover
668  DF  .~.~.~ Meter terminal and connector arrangements
669  DF  .~.~.~.~ Terminal block
670  DF  .~.~.~.~ Contact blade receiving structure
671  DF  .~.~.~.~ Adjustable or adaptable contacts
672  DF  .~.~.~ Tamper resistant
673  DF  .~.~ Circuit breaker supporting means (i.e., attaching, mounting, etc.)
674  DF  .~.~ For ballast elements
675  DF  .~.~ Bus duct
676  DF  .~.~ With cooling means
677  DF  .~.~.~ Fluid
678  DF  .~.~.~.~ Air
679  DF  .~ For electronic systems and devices
680  DF  .~.~ Including keyboard support
681  DF  .~.~ Including display support
682  DF  .~.~.~ CRT support
683  DF  .~.~ Computer related support
684  DF  .~.~.~ Memory unit support
685  DF  .~.~.~.~ Disk drive support
686  DF  .~.~.~ Input/output device support
687  DF  .~.~.~ With cooling means
688  DF  .~.~ With cooling means
689  DF  .~.~.~ Fluid
690  DF  .~.~.~.~ Air
691  DF  .~.~.~.~.~ Pressurized or conditioned
692  DF  .~.~.~.~.~ Plural Openings
693  DF  .~.~.~.~.~.~ Circular
694  DF  .~.~.~.~.~ With air circulating means
695  DF  .~.~.~.~.~.~ Fan or blower
696  DF  .~.~.~.~.~.~.~ With heat exchanger unit
697  DF  .~.~.~.~.~.~.~ With heat sink or cooling fins
698  DF  .~.~.~.~.~ And liquid
699  DF  .~.~.~.~ Liquid
700  DF  .~.~.~.~.~ Change of physical state
701  DF  .~.~.~.~ With heat exchanger unit
702  DF  .~.~.~.~ With cold plate or heat sink
703  DF  .~.~.~.~ With cooling fins
704  DF  .~.~.~ Thermal conduction
705  DF  .~.~.~.~ By specific coating
706  DF  .~.~.~.~.~ Containing silicon or aluminum
707  DF  .~.~.~.~ Through support means
708  DF  .~.~.~.~.~ Specific chemical compound or element
709  DF  .~.~.~.~.~ Heat sink
710  DF  .~.~.~.~.~.~ Details
711  DF  .~.~.~.~.~.~ Cooling plate or bar
712  DF  .~.~.~.~.~ Thermally and electrically conductive
713  DF  .~.~.~.~.~ Electrically insulating thermally conductive
714  DF  .~.~.~.~ Through component housing
715  DF  .~.~.~.~ For module
716  DF  .~.~.~.~.~ Plural
717  DF  .~.~.~.~ For active solid state devices
718  DF  .~.~.~.~.~ For integrated circuit
719  DF  .~.~.~.~.~.~ Circuit board mounted
720  DF  .~.~.~.~ For printed circuit board
721  DF  .~.~.~.~.~ Plural
722  DF  .~.~.~.~ For electronic circuit
723  DF  .~.~.~.~ For lead frame
724  DF  .~.~ Cabinet-type housing
725  DF  .~.~.~ With retractable or readily detachable chassis
726  DF  .~.~.~.~ With locking means or device
727  DF  .~.~.~.~ Sliding component or commpartment
728  DF  .~.~ Module
729  DF  .~.~.~ Plural
730  DF  .~.~.~.~ With housing
731  DF  .~.~.~.~.~ Interchangeable
732  DF  .~.~.~.~.~ Having lock or interlock
733  DF  .~.~.~.~.~ Selective connections
734  DF  .~.~.~.~ With coupling or decoupling capacitor
735  DF  .~.~.~.~ Stacked
736  DF  .~.~.~ With printed circuit boards
737  DF  .~.~.~.~ IC card or card member
738  DF  .~.~.~.~ With resistor and capacitor
739  DF  .~.~.~.~ With particular material
740  DF  .~.~.~.~ With locking means or device
741  DF  .~.~.~.~ Guiding means
742  DF  .~.~.~.~ With spacer
743  DF  .~.~.~.~ Solder connection
744  DF  .~.~.~.~ Cordwood type
745  DF  .~.~.~.~.~ Welded connection
746  DF  .~.~.~ With specific dielectric material or layer
747  DF  .~.~.~ With locking means or device
748  DF  .~.~ Printed circuit board
749  DF  .~.~.~ Flexible board
750  DF  .~.~.~.~ With specific dielectric material or layer
751  DF  .~.~.~.~ With particular conductive material or coating
752  DF  .~.~.~ With housing or chassis
753  DF  .~.~.~.~ Specific chassis or ground
754  DF  .~.~.~.~ With ejector means
755  DF  .~.~.~.~ Rotatable
756  DF  .~.~.~.~ Guiding means
757  DF  .~.~.~.~ With particular material
758  DF  .~.~.~.~ With spacer
759  DF  .~.~.~.~ With lock or interlock
760  DF  .~.~.~ Connection of components to board
761  DF  .~.~.~.~ Component within printed circuit board
762  DF  .~.~.~.~.~ With specific dielectric material or layer
763  DF  .~.~.~.~.~ Capacitor and electrical component
764  DF  .~.~.~.~.~ Integrated circuit
765  DF  .~.~.~.~ By direct coating of components on board
766  DF  .~.~.~.~.~ Capacitor and resistor
767  DF  .~.~.~.~ With mounting pad
768  DF  .~.~.~.~.~ Having leadless component
769  DF  .~.~.~.~.~ Having spring member
770  DF  .~.~.~.~.~ Having spacer
771  DF  .~.~.~.~.~ Having particular material
772  DF  .~.~.~.~ With specific lead configuration
773  DF  .~.~.~.~.~ Shaped lead on components
774  DF  .~.~.~.~.~ Shaped lead on board
775  DF  .~.~.~.~.~ Busbar
776  DF  .~.~.~.~.~ Flexible connecting lead
777  DF  .~.~.~.~ By specific pattern on board
778  DF  .~.~.~.~.~ Cross-connected
779  DF  .~.~.~.~.~ With specific connection material
780  DF  .~.~.~.~ Different voltage layers
781  DF  .~.~.~.~ With switch
782  DF  .~.~.~.~ Having passive component
783  DF  .~.~.~.~ Having semiconductive device
784  DF  .~.~.~ Plural
785  DF  .~.~.~.~ With separable connector or socket means
786  DF  .~.~.~.~.~ Having key connection
787  DF  .~.~.~.~.~ Having spring member
788  DF  .~.~.~.~.~ Having backplane connection
789  DF  .~.~.~.~.~ Having flexible connector
790  DF  .~.~.~.~.~ Stacked
791  DF  .~.~.~.~.~ Multiple contact pins
792  DF  .~.~.~.~ Plural contiguous boards
793  DF  .~.~.~.~.~ Thick film component or material
794  DF  .~.~.~.~.~ Power, voltage, or current layer
795  DF  .~.~.~.~.~ Plural dielectric layers
796  DF  .~.~.~.~ With housing or chassis
797  DF  .~.~.~.~.~ Storage or file cabinet
798  DF  .~.~.~.~.~ With ejector or extractor
799  DF  .~.~.~.~.~ Grounding Construction or Detail
800  DF  .~.~.~.~.~ With Shielding Structure
801  DF  .~.~.~.~.~ Specific latching or retaining device
802  DF  .~.~.~.~.~ Specific alignment or guide means
803  DF  .~.~.~.~ Interconnection details
804  DF  .~.~.~.~ Spacer details
805  DF  .~.~ Matrix assembly
806  DF  .~.~.~ Diode
807  DF  .~.~ Component mounting or support means
808  DF  .~.~.~ Mounting pad
809  DF  .~.~.~ With discrete structure or support
810  DF  .~.~.~ Plural mounting or support
811  DF  .~.~.~ With passive components
812  DF  .~.~.~ With particular insulation
813  DF  .~.~ Lead frame
814  DF  .~.~ Radio type
815  DF  .~.~.~ Tube mounting
816  DF  .~.~ Shielding
817  DF  .~.~.~ For electronic tube
818  DF  .~.~.~ EMI
819  DF  .~.~ For relay
820  DF  .~.~ For semiconductor device
821  DF  .~.~ For capacitor and inductor
822  DF  .~ Contact banks
823  DF  .~ Terminal block
824  DF  .~.~ With protective device or unit
825  DF  .~ Support brackets
826  DF  .~ Wire distribution (e.g., harness, rack, etc.)
827  DF  .~.~ With interconnecting cable
828  DF  .~.~ With switchboard or switch
829  DF  .~ Frame
830  DF  .~.~ With plurality of capacitors
831  DF  .~.~ With cooling means
832  DF  .~.~ With switchboard or switch
833  DF  .~ Fuse block
834  DF  .~.~ Plural
835  DF  .~ Fuse pullout device
836  DF  .~ For transformer
837  DF  .~ For switch or fuse
500  DF  ELECTROLYTIC SYSTEMS OR DEVICES
501  DF  .~ Coulometer (i.e., electrochemical timer)
502  DF  .~ Double layer electrolytic capacitor
503  DF  .~ Liquid electrolytic capacitor
504  DF  .~.~ With significant electrolyte
505  DF  .~.~.~ Salt solute
506  DF  .~.~.~ Ethylene glycol
507  DF  .~.~.~ With depolarizer
508  DF  .~.~ Anode type electrode
509  DF  .~.~.~ Aluminum or tantalum
510  DF  .~.~.~ Anode riser
511  DF  .~.~.~ Wound
512  DF  .~.~.~.~ With separator
513  DF  .~.~.~.~ With mounting means (e.g., anchoring means or clamping)
514  DF  .~.~.~.~ With heat conductor (e.g., heat sink)
515  DF  .~.~.~.~ With common conductor (e.g., stripline)
516  DF  .~.~ Cathode type electrode (e.g., cathode casing)
517  DF  .~.~ Casing
518  DF  .~.~.~ With hermetic seal
519  DF  .~.~.~ With header, cover, or endseal
520  DF  .~.~.~.~ Significant electrical connection means (e.g., terminals or leads)
521  DF  .~.~.~ With vent means
522  DF  .~.~ Multiple capacitors
523  DF  .~ Solid electrolytic capacitor (e.g., dry electrolytic capacitor)
524  DF  .~.~ Dielectric
525  DF  .~.~ With significant electrolyte or semiconductor
526  DF  .~.~.~ Paste or gel
527  DF  .~.~.~ Organic salt (e.g., TCNQ)
528  DF  .~.~ Anode type electrode
529  DF  .~.~.~ Aluminum or tantalum
530  DF  .~.~.~ Wound
531  DF  .~.~.~.~ With lead conductor
532  DF  .~.~ Cathode type electrode
533  DF  .~.~.~ With significant lead
534  DF  .~.~ With protection means
535  DF  .~.~ Casing
536  DF  .~.~.~ With hermetic seal
537  DF  .~.~.~ With header, cover, or endseal
538  DF  .~.~.~.~ Significant electrical connection means (e.g., terminals or leads)
539  DF  .~.~.~.~ With potting
540  DF  .~.~ With terminal
541  DF  .~.~ Multiple capacitors
434  DF  .~ Systems (e.g., plural cells, standby exciting voltage)
435  DF  .~ Current interruption type (e.g., circuit breaker, D.C.-to-pulse converters)
436  DF  .~ Rectifiers
437  DF  MISCELLANEOUS
*********************************
FOREIGN ART COLLECTIONS
*********************************
*  DD  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES (361/1)
*  DD  .~ With specific voltage responsive fault sensor (361/88)
FOR 100  DF  .~.~ Overvoltage (361/91)
*  DD  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES (361/1)
FOR 101  DF  .~ With specific current responsive fault sensor (361/93)