Class 338: ELECTRICAL RESISTORS ( Manual of U.S. Patent Classification )

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Manual of U.S. Patent Classification
as of June 30, 2000


Class
338
ELECTRICAL RESISTORS


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Subclass Title
ClassTitle ===> ELECTRICAL RESISTORS
1[Patents]COHERER TYPE
2[Patents]STRAIN GAUGE TYPE
3[Patents] . With temperature compensation
4[Patents] . Fluid- or gas pressure-actuated
5[Patents] . Dynamometer type
6[Patents] . Extensometer type
7[Patents]RESISTANCE VALUE TEMPERATURE-COMPENSATED
8[Patents] . Temperature-compensated actuator
9[Patents] . With additional compensating resistor or resistance element
10[Patents] . . Filament or wire resistance elements
11[Patents]REFLECTOR DIRECTS HEAT ON ELEMENT
12[Patents]MOVABLE MAGNET ACTUATES RESISTOR THROUGH HOUSING OR PARTITION
13[Patents]RESISTANCE VALUE RESPONSIVE TO A CONDITION
14[Patents] . Plural conditions
15[Patents] . Photoconductive (e.g., light sensitive)
16[Patents] . . With vibration control
17[Patents] . . Plural resistance elements (e.g., mosaic)
18[Patents] . . Infrared radiation
19[Patents] . . With transparent housing
20[Patents] . Current and/or voltage (e.g., ballast resistor)
21[Patents] . . Voltage surge-responsive or lightning arrester type
22R[Patents] . . Thermistor type
23[Patents] . . . Indirectly heated
22SD[Patents] . . . Semiconductor
24[Patents] . . Indirectly heated
25[Patents] . Ambient temperature
26[Patents] . . Cable or tape type (e.g., fire-detecting cable)
27[Patents] . . Liquid contact or element
28[Patents] . . Probe type
29[Patents] . . . Mechanically adjustable or variable
30[Patents] . . . Terminal forms casing or housing
31[Patents] . . Mechanically adjustable or variable
32R[Patents] . Magnetic field or compass (e.g., Hall effect type)
32H[Patents] . . Hall effect
32S[Patents] . . Superconductors
33[Patents] . Float actuator
34[Patents] . Gas, vapor, or moisture absorbing or collecting
35[Patents] . . Humidity
36[Patents] . Fluid- or gas pressure-actuated
37[Patents] . . Vehicle tire inflation
38[Patents] . . Liquid resistance element or contact
39[Patents] . . Piston
40[Patents] . . Bourdon tube
41[Patents] . . Bellows or capsule
42[Patents] . . Diaphragm
43[Patents] . Gravity stabilized or inertia actuator
44[Patents] . . Liquid resistance element or contact
45[Patents] . . Centrifugal
46[Patents] . . Pendulum
47[Patents] . Force-actuated
48[Patents]PLURAL SEPARATE DIVERSE RESISTORS
49[Patents]SHUNT TYPE
50[Patents]MOUNTED ON WHEELS OR VEHICLE
51[Patents]WITH HEAT DISSIPATING PROJECTIONS (E.G., VANES)
52[Patents] . Granular, powdered, or transversely stacked resistance element
53[Patents]WITH COOLING GAS OR LIQUID CIRCULATION
54[Patents] . Element granular, powdered, or stacked between terminals
55[Patents] . With cooling liquid circulation
56[Patents] . . Liquid resistance element circulates
57[Patents] . Vented or ventilating casing or housing
58[Patents] . Ventilated helical or zigzag element
59[Patents]WITH HEAT-STORING
60[Patents]WITH CAPACITY-REDUCING
61[Patents]WITH INDUCTANCE-REDUCING
62[Patents] . Helical or wound element
63[Patents] . . Bifilar
64[Patents]WITH ELECTRICAL SHIELD
65[Patents] . Mechanically variable resistor
66[Patents]IGNITION INTERFERENCE SUPPRESSOR TYPE
67[Patents]WITH DIVERSE NONELECTRICAL DEVICE (E.G., MECHANICAL OR CHEMICAL)
68[Patents]MECHANICALLY VARIABLE (E.G., RHEOSTAT)
69[Patents] . Musical instrument playing key actuated
70[Patents] . In or on lamp socket
71[Patents] . . Resistor surfaces pressed together (e.g., compressible type)
72[Patents] . . Resistor with intervening connector between contact and element (e.g., taps)
73[Patents] . . Resistor with contact angularly slidable on element
74[Patents] . . Resistor with contact rectilinearly slidable on element
75[Patents] . With resistor cleaner
76[Patents] . Interchangeable resistors of different resistance value
77[Patents] . Plug boxes
78[Patents] . With current reversing (e.g., reversing rheostat)
79[Patents] . With element winding and/or unwinding
80[Patents] . Liquid resistance element
81[Patents] . . Electrode separable from liquid element for switching
82[Patents] . . Adjustable insulating barrier between electrodes
83[Patents] . . Variable electrode separation
84[Patents] . . . Plural ganged electrodes
85[Patents] . . . Electrode rotatable
86[Patents] . . Level of liquid element adjustable on electrodes (e.g., electrodes move up and down in element)
87[Patents] . Contact adjustably inserted into resistance element (e.g., penetrating type)
88[Patents] . . Powdered element
89[Patents] . Mathematical function (e.g., sine-cosine potentiometer)
90[Patents] . . With slab or card-type resistance element
91[Patents] . . With mechanical converter
92[Patents] . Resistance element adjustably short-circuited
93[Patents] . . Compressible spring type
94[Patents] . . Liquid contact
95[Patents] . . With intervening structure between element and short-circuiting means (e.g., taps)
96[Patents] . . Spring contact strip progressively pressed along element
97[Patents] . . Unitary movable contact electrically bridges resistance portions
98[Patents] . With motion or vibration damping means (e.g., dashpots)
99[Patents] . Surfaces pressed together (e.g., compressible type)
100[Patents] . . Granular
101[Patents] . . Pile type
102[Patents] . . . With contactor moving along pile
103[Patents] . . . With electromagnetic operator (e.g., electric motor)
104[Patents] . . . . Force applied at both ends of pile
105[Patents] . . . . With diaphragm-type biasing spring
106[Patents] . . . . With initial pressure adjustment
107[Patents] . . . With electromagnetic holder
108[Patents] . . . Pedal- or treadle-operated
109[Patents] . . . With initial pressure adjustment
110[Patents] . . . With switch actuated by resistor actuator
111[Patents] . . . With intervening conducting structure
112[Patents] . . . Contact surface area of piles variable
113[Patents] . . . With resilient pressure-applying linkage
114[Patents] . Deformable
115[Patents] . Element in piled or stacked layers
116[Patents] . With electromagnetic operator (e.g., electric motor)
117[Patents] . Slidable coextensive helical and linear contacts
118[Patents] . Movable contact electrically adjustable over length of resistance element
119[Patents] . . With contact position indicating lamp
120[Patents] . . Additional resistor adjustably shunts part of resistance element (e.g., varifunction type
121[Patents] . . With nonlinearity correction
122[Patents] . . Coarse and fine resistance elements
123[Patents] . . . Plural elements and plural contacts
124[Patents] . . . . Contacts interlinked (e.g., lost motion type)
125[Patents] . . Unitary movable contact electrically bridges plural resistance elements
126[Patents] . . . Elements or taps in parallel
127[Patents] . . . Contact rotates between circularly arranged elements or taps
128[Patents] . . Plural
129[Patents] . . . Sequentially operated
130[Patents] . . . Ganged
131[Patents] . . . . Resistors individually adjustable
132[Patents] . . . . Resistors in tandem along rotary shaft or coupling
133[Patents] . . . . Rectilinearly operated
134[Patents] . . . Individually operated concentric shaft type
135[Patents] . . With zero setting or phasing
136[Patents] . . Contact clamped on resistance element
137[Patents] . . Plural contacts adjustable over single resistance element
138[Patents] . . Element tapered
139[Patents] . . . Portion of element shorted
140[Patents] . . . With intervening connector between contact and element (e.g., taps)
141[Patents] . . . Helical or wound
142[Patents] . . . Element forms a coating
143[Patents] . . Contact moves along turns of helical resistance element
144[Patents] . . . Contact lifts element from core
145[Patents] . . . Helical resistance element moves
146[Patents] . . . With helical collector parallel to helical element
147[Patents] . . . Resistor formed as a flat spiral
148[Patents] . . . With helical screw for moving the contact
149[Patents] . . . With contact stop
150[Patents] . . Resistance element moves
151[Patents] . . . With liquid contact
152[Patents] . . . With knob mounting or enclosing the element
153[Patents] . . Contact operated by pedal or treadle
154[Patents] . . With a flexible conductive strip separating the movable contact and the resistance element or taps
155[Patents] . . Contact rocks along element or taps
156[Patents] . . With liquid contact
157[Patents] . . Contact rolls along element or taps
158[Patents] . . . Contact rolls rectilinearly
159[Patents] . . With heat conducting or distributing path
160[Patents] . . Contact slides along in contact with element
161[Patents] . . . With element casing open over contact track
162[Patents] . . . Contact angularly slidable
163[Patents] . . . . With knob forming casing or covering
164[Patents] . . . . Hermetically sealed housing
165[Patents] . . . . With elongated rectilinear resistance element
166[Patents] . . . . With removable actuating shaft or key
167[Patents] . . . . Spring-loaded contact
168[Patents] . . . . With flexible lead-in to contact
169[Patents] . . . . Contact pressure adjustable
170[Patents] . . . . With contact biasing spring on contact arm or carrier
171[Patents] . . . . With plural contact portions
172[Patents] . . . . With switching
173[Patents] . . . . . Contact separable from resistance element
174[Patents] . . . . With collector ring
175[Patents] . . . . . Ring, a shaft-bearing
176[Patents] . . . Contact rectilinearly slidable
177[Patents] . . . . Contact surrounds resistor
178[Patents] . . . . Contact separable from element for switching
179[Patents] . . . . With series switch
180[Patents] . . . . Screw-operated
181[Patents] . . . . . Screw, a fine-adjustment
182[Patents] . . . . With contact lock
183[Patents] . . . . With collector bar
184[Patents] . . With housing
185[Patents] . . With intervening connector between contact and element (e.g., taps)
186[Patents] . . . Connector formed as severed helical turns or as comb teeth
187[Patents] . . . With arc suppressor
188[Patents] . . . With collector bar or ring
189[Patents] . . . With magnetic holder for controller arm
190[Patents] . . . Angularly movable contact
191[Patents] . . . . With switch
192[Patents] . . . . Resistance element enclosed
193[Patents] . . . . . Enclosure formed on and hardened on element
194[Patents] . . . Rectilinearly movable contact
195[Patents] . Resistance value varied by removing or adding material
196[Patents] . With resistor actuator position indicator
197[Patents] . With support
198[Patents] . With switch actuated by resistor actuator
199[Patents] . With housing
200[Patents] . With switch
201[Patents] . . Switch connects plural elements in parallel
202[Patents]MOVABLE CONTACT STRUCTURE
203[Patents]READILY SEVERABLE INTO INDEPENDENT RESISTORS
204[Patents]ELEMENT IN LAYERS PILED OR STACKED BETWEEN TERMINALS
205[Patents] . With intervening conducting layer
206[Patents]EXPANDED METAL TYPE
207[Patents]ELEMENT AND BASE PERMANENTLY FOLDED OR ROLLED
208[Patents]MESH, WOVEN, OR BRAIDED RESISTANCE ELEMENT
209[Patents]EXTENSIBLE
210[Patents]FLEXIBLE OR FOLDING
211[Patents] . Element coated on flexible base
212[Patents] . Tape or sheet
213[Patents] . Beaded
214[Patents] . Cable type
215[Patents]WITH SWITCH
216[Patents]IN COAXIAL TRANSMISSION LINE OR WAVE GUIDE
217[Patents]TAPERED ELEMENT
218[Patents] . Helical or wound
219[Patents]IN OR ON LAMP SOCKET OR BASE
220[Patents]IN DETACHABLE ELECTRICAL CONNECTOR
221[Patents]DETACHABLE PLUG-TYPE RESISTOR UNIT
222[Patents]WITH LIQUID ELEMENT
223[Patents]GRANULAR OR POWDERED ELEMENT
224[Patents] . Granular or powdered mixtures
225[Patents] . Carbon particles
226[Patents]INCASED, EMBEDDED, OR HOUSED
227[Patents] . With resistance value indicator
228[Patents] . Casing extends through plate
229[Patents] . Probe type
230[Patents] . Metal casing or housing cast around element
231[Patents] . In liquid
232[Patents] . Casing or housing readily openable and/or separable from element
233[Patents] . . Elongated casing or housing with plug, disc, or cap at end
234[Patents] . With gaseous or vacuum spacing between element and casing or housing
235[Patents] . . Plural elements or resistors
236[Patents] . . Spacing of uniform thickness over length of element
237[Patents] . . . Hermetically sealed
238[Patents] . Element inpowdered insulation with outer metallic sheath
239[Patents] . . Plural elements or resistors
240[Patents] . . Terminals or leads adjacent
241[Patents] . . . Sheath only outside looped element
242[Patents] . . Shape of sheath
243[Patents] . Element in insulation with outer metallic sheath
244[Patents] . . Insulation coated on conducting liner
245[Patents] . . Entire insulation or sheath formed as a coating
246[Patents] . . With insulation and sheath external and internal to element
247[Patents] . . Plural part sheath
248[Patents] . . . Insulation formed and hardened in situ (e.g., molded)
249[Patents] . . . Parts formed as flat sheets
250[Patents] . . Insulation formed and hardened in situ (e.g., molded)
251[Patents] . . Sheath embraces or folds over insulation
252[Patents] . Element embedded or enclosed in groove or recess
253[Patents] . . With filling hardened in situ
254[Patents] . Flattened resistance element between flat layers
255[Patents] . . Layers coalesced or fused together
256[Patents] . Casing or housing formed in plural layers external to element
257[Patents] . . One layer a coating
258[Patents] . Resistance element formed as a coating on interior of casing or housing
259[Patents] . Wound, braided, or woven casing or housing
260[Patents] . Plural resistors
261[Patents] . . Helical or wound element
262[Patents] . Casing or housing formed as a coating
263[Patents] . . Helical or wound element
264[Patents] . . . Element coiled on a core
265[Patents] . . . . Terminal or leads at one end of core
266[Patents] . . . . Terminal surrounds element and/or core
267[Patents] . Helical or wound element
268[Patents] . . Preformed sleeve engaging over element
269[Patents] . . Casing or housing formed on and hardened on resistor (e.g., molded)
270[Patents] . . Element coiled on a core
271[Patents] . Terminal forms casing or housing
272[Patents] . Terminal or lead surrounds and secured to casing or housing
273[Patents] . Terminal or lead extends into end of elongated casing or housing
274[Patents] . . With sealing plug, disc or cap
275[Patents] . Casing or housing formed on and hardened on resistor (e.g., molded)
276[Patents] . Terminal or lead extends through casing or housing wall
277[Patents]WITH PROTECTING STRUCTURE SPACED FROM ELEMENT OR TERMINAL
278[Patents]EDGEWISE COILED HELICAL STRIP RESISTANCE ELEMENT
279[Patents]RIBBON RESISTANCE ELEMENT BENT OR CURVED ON FLAT SIDE
280[Patents] . Zigzag or sinuous
281[Patents] . . Element includes integral stiffening structure
282[Patents] . Helical or wound
283[Patents]ZIGZAG OR SINUOUS RESISTANCE ELEMENT
284[Patents] . Element includes integral stiffening structure
285[Patents] . Element extends along groove in base
286[Patents] . Helical
287[Patents] . Compound or multiple zigzag
288[Patents] . . Element includes conductive jumpers or spacers
289[Patents] . Element includes conductive jumpers or spacers
290[Patents] . Element projects in or through an opening or a slot in a support or frame
291[Patents] . With transverse element stiffening or reinforcing rod or strip
292[Patents] . Element forms a coating
293[Patents] . Planar
294[Patents] . Cylindrical
295[Patents]PLURAL RESISTANCE ELEMENTS CONNECTED BY A JUMPER OR SPACER
296[Patents]HELICAL OR WOUND RESISTANCE ELEMENT
297[Patents] . Flat spiral winding
298[Patents] . Compound helix or winding
299[Patents] . Plural supported helices or windings
300[Patents] . Element forms a coating
301[Patents] . Element coiled on flat or ribbon base
302[Patents] . Element coiled on cylindrical or prismatic core
303[Patents] . . In helical groove on core
304[Patents] . Element on frame or support
305[Patents] . . Element extends in or through openings or grooves in frame or support
306[Patents]WITH BASE EXTENDING ALONG RESISTANCE ELEMENT
307[Patents] . Resistance element and/or terminals printed or marked on base
308[Patents] . Resistance element coated on base
309[Patents] . . Terminal coated on
310[Patents] . Resistance element extends through base
311[Patents] . Resistance element mounted in a groove in base
312[Patents] . Terminal extends in or through base
313[Patents] . Terminal embraces base
314[Patents] . Resistance element and base formed in layers
315[Patents]WITH MOUNTING OR SUPPORTING MEANS
316[Patents] . Compensates for or permits resistor
317[Patents] . Threading or projecting through the support
318[Patents] . Extending between supports
319[Patents] . . Plural resistors
320[Patents] . Plural resistors
321[Patents]RESISTANCE ELEMENT CORES AND FRAMES
322[Patents]WITH TERMINAL
323[Patents] . Terminal tapped on resistance element
324[Patents] . Diverse terminals
325[Patents] . With three or more terminals
326[Patents] . Terminals adjacent (e.g., looped resistor)
327[Patents] . Terminal coated on resistance element
328[Patents] . Terminal and resistance element disposed in flat layers
329[Patents] . Welded or soldered
330[Patents] . Terminal and resistance element integral
331[Patents] . Resistance element surrounds terminal
332[Patents] . Terminal embraces or surrounds resistance element
333[Patents]PARTICULAR CONFIGURATION AND/OR DIMENSION
334[Patents]MISCELLANEOUS
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DIGEST
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DIG 1[Patents]Worm gear drive


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Last Modified: 6 October 2000