US Patent Class 336
INDUCTOR DEVICES



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Current as of: June, 1999
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  DF  CLASS NOTES
5  DF  POLYPHASE
10  DF  .~ ADJUSTABLE INDUCTOR
12  DF  .~ Interconnected windings
15  DF  WITH COIL WINDING AND/OR UNWINDING
20  DF  WITH DEFORMABLE OR DISTORTABLE COIL AND/OR CORE
30  DF  WITH CONDITION-RESPONSIVE INDUCTANCE ADJUSTING MEANS (E.G., BY ELECTROMAGNET)
40  DF  ADJUSTABLE BY MAGNETIC FORCE BETWEEN RELATIVELY MOVABLE PARTS OF THE INDUCTOR
41  DF  .~ Weight-counterbalanced coil or core
45  DF  WITH MOVABLE ELEMENT POSITION INDICATOR
55  DF  WITH TEMPERATURE MODIFIER
57  DF  .~ With inductor insulating fluid circulating means
58  DF  .~ Liquid insulating medium
59  DF  .~ Vented casing
60  DF  .~ Ventilating passages (e.g., by coil section or core part spacers)
61  DF  .~ Heat exchanging surfaces
62  DF  .~ Hollow conductor coil
65  DF  WITH MOUNTING OR SUPPORTING MEANS (E.G., BASE)
66  DF  .~ Handle
67  DF  .~ Bracket
68  DF  .~ Suspension
69  DF  WITH COIL CAPACITANCE MODIFYING MEANS
70  DF  .~ With surge potential gradient modifying means
73  DF  WITH CLOSED COIL OR CONDUCTOR MEMBER
75  DF  .~ Movable with respect to another coil
77  DF  .~.~ With magnetic portion
79  DF  .~.~ Angularly movable
82  DF  COIL FORMS PROTECTIVE CASING
83  DF  CORE FORMS CASING
84 R  DF  WITH ELECTRIC AND/OR MAGNETIC SHIELDING MEANS
84 C  DF  .~ Conductive
84 M  DF  .~ Magnetic
87  DF  .~ Adjustable inductor
90  DF  WITH OUTER CASING OR HOUSING
92  DF  .~ Internal inductor support
94  DF  .~ Fluid insulation
96  DF  .~ Potted type
98  DF  .~ Exposed core portions
100  DF  WITH VIBRATION CONTROL
105  DF  COMBINED
107  DF  .~ With connector
110  DF  WITH PERMANENT MAGNET
115  DF  RELATIVELY MOVABLE COILS
116  DF  .~ With means to change coil length and/or connections
117  DF  .~ With core
118  DF  .~.~ Relatively movable core and coils
119  DF  .~.~ Coil and core movable as a unit
120  DF  .~.~.~ Angularly movable
121  DF  .~ Angularly and linearly movable coils
122  DF  .~ Angularly movable
123  DF  .~.~ About axis parallel to or coaxial with the other coil axis
124  DF  .~.~ Nonsymmetrically pivoted coil movable on axis transverse to other coil axis
125  DF  .~.~ About axis normal to other coil axis
126  DF  .~.~.~ Plural coils movable with respect to a coil
127  DF  .~.~.~ Similar spherical-shaped coils
128  DF  .~.~.~ Tubular stationary coil
129  DF  .~ Movable along or parallel to other coil axis
130  DF  RELATIVELY MOVABLE CORE AND COIL
131  DF  .~ Plural coils with plural cores
132  DF  .~ Plural relatively movable core parts
133  DF  .~.~ Adjustable magnetic shunt
134  DF  .~.~ Adjustable air gap
135  DF  .~.~.~ Angularly movable
136  DF  .~ Telescoping magnetic body and coil
137  DF  WITH MEANS TO CHANGE COIL LENGTH OR CONNECTIONS
138  DF  .~ Parallel-spaced conductors or coils bridged by movable connector
139  DF  .~ Contactor following helical conductor
140  DF  .~.~ Plural movable contactors
141  DF  .~.~ With contactor guide track
142  DF  .~ Coil connections changed by moving coil (e.g., coil substitution)
143  DF  .~ With connection reversing means
144  DF  .~ With variable number of short-circuited turns
145  DF  .~ Plural coils (e.g., transformers)
146  DF  .~.~ Inductance change in plural coils
147  DF  .~.~ Plural coils or coil portions connected in parallel or in series and parallel
148  DF  .~.~ Autotransformers
149  DF  .~ Contactor slidable on coil winding
150  DF  .~ Series change (e.g., tap change)
155  DF  INDUCTIVE REGULATORS WITH NO RELATIVELY MOVING PARTS
160  DF  .~ With magnetic shunt to increase leakage reactance
165  DF  .~.~ Air gap in magnetic shunt
170  DF  THREE OR MORE WINDINGS
171  DF  .~ Noninductively related windings
172  DF  COIL TURN LINKS PORTION OF CORE ACROSS SECTION (E.G., FRACTIONAL TURN)
173  DF  INTERLINKED COILS OR WINDINGS (E.G., CURRENT TRANSFORMER)
174  DF  .~ Coil surrounding linear conductor
175  DF  CORE SURROUNDING LINEAR CONDUCTOR
176  DF  .~ Hinged core
177  DF  WITH COIL OR MAGNETIC MATERIAL
178  DF  WITH CLOSED CORE INTERRUPTED BY AN AIR GAP
179  DF  COILS WITH TEMPERATURE COMPENSATING MEANS
180  DF  WINDING FORMED OF PLURAL COILS (SERIES OR PARALLEL)
181  DF  .~ Wound to reduce external magnetic field (i.e., fieldless winding)
182  DF  .~ Two windings (e.g., transformer)
183  DF  .~.~ Coils of different windings interposed
184  DF  .~ Coils having different axis or on different core legs
185  DF  .~ Coil supports or spacers
186  DF  COIL FORMED OF PARALLEL CONNECTED CONDUCTORS
187  DF  .~ Crossed or transposed conductors
188  DF  TWO WINDINGS WITH MUTUALLY CROSSED WINDING TURNS
189  DF  COIL WITH CROSSED TURNS
190  DF  .~ Bank or universal wound coils (e.g., honeycomb, random wound)
191  DF  .~ Basket weave (single layer)
192  DF  WINDING WITH TERMINALS, TAPS, OR COIL CONDUCTOR END ANCHORING MEANS
195  DF  COIL SUPPORTED WITHIN GROOVED OR HOLLOW COIL CONDUCTOR OF ANOTHER COIL
196  DF  WITH SUPPORTING AND/OR SPACING MEANS BETWEEN COIL AND CORE
197  DF  .~ Coil clamps or wedges
198  DF  .~ Preformed insulation between coil and core (e.g., spool)
199  DF  COIL OR COIL TURN SUPPORTS OR SPACERS
200  DF  .~ Printed circuit-type coil
205  DF  .~ Coil turns cemented to support or embedded in plastic
206  DF  .~ Flexible filament, strip or sheet insulation
207  DF  .~ With coil turn spacer
208  DF  .~ Coil on a preformed suport or mount
209  DF  COIL WRAPPER ON BINDER
210  DF  WITH CORE CLAMPS, WEDGES OR FASTENERS
211  DF  CONCENTRIC OR NESTED CORE ELEMENTS
212  DF  PLURAL PART CORE
213  DF  WOUND CORE
214  DF  MULTIPLE MAGNETIC PATHS
215  DF  .~ Three or more
216  DF  CORE JOINT STRUCTURE
217  DF  .~ Overlapping laminations (e.g., "Break Joint")
218  DF  MAGNETIC ORIENTATION (I.E., DIRECTIONALLY PRESTRESSED CORE MATERIAL)
219  DF  CORE INSULATION (E.G., BETWEEN CORE PARTS)
220  DF  TWO WINDINGS
221  DF  COIL AND CORE
222  DF  WINDINGS
223  DF  .~ Having conductor of particular shape (e.g., tapered longitudinally or of noncircular cross section)
224  DF  .~ Nonuniformly spaced turns
225  DF  COILS OF SPECIAL CONFIGURATION
226  DF  .~ Figure "8" section
227  DF  .~ Polyhedral section
228  DF  .~ "D" section
229  DF  .~ Toroidal
230  DF  .~ Spherical
231  DF  .~ Conical
232  DF  .~ Planar type
233  DF  CORE (E.G., COMPRESSED POWDER)
234  DF  .~ Laminated type (includes bundles of rods or wires)
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DIGESTS
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DIG 1  DD  Superconductive
DIG 2  DD  Separable