US Patent Class 335
ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  COMBINED DIVERSE SWITCHES (E.G., MANUAL-ACTUATED AND ART TYPE)
2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES
3  DF  .~ Utilizing magnetostrictive elements
4  DF  .~ Radio frequency switch (e.g., T/R switch)
5  DF  .~.~ With coaxial components
6  DF  .~ Automatic circuit-interrupting devices (e.g., circuit-protective devices)
7  DF  .~.~ Responsive to plural diverse circuit conditions (e.g., voltage and current)
8  DF  .~.~ Multipole or polyphase
9  DF  .~.~.~ With individual latch or trip means in each leg
10  DF  .~.~.~ With common latch or trip means
11  DF  .~.~ Plural switches
12  DF  .~.~ With shunting contacts
13  DF  .~.~ With auxiliary switch means (e.g., for energizing coil)
14  DF  .~.~ With direct connected contact separating means
15  DF  .~.~ With contact biasing, holding or pressure control means
16  DF  .~.~.~ Magnetic or electrodynamic (e.g., blowon or blowoff)
17  DF  .~.~ With switch condition signalling, indicating or alarm means
18  DF  .~.~ Responsive to predetermined or abnormal current condition (e.g., direction, phase angle or amplitude)
19  DF  .~.~.~ Zero current
20  DF  .~.~ Voltage responsive (under, over or no voltage)
21  DF  .~.~ With latch or trip means
22  DF  .~.~.~ Plural latch or combined latch operating means for single latch
23  DF  .~.~.~.~ With diverse-type actuating means (e.g., magnetic and thermal)
24  DF  .~.~.~ Trip-free (i.e., cannot be manually reclosed while overload exists)
25  DF  .~.~.~.~ With disabling means (for contact-actuator)
26  DF  .~.~.~ Reclosing or resetting
27  DF  .~.~.~.~ Automatic combined with manual
28  DF  .~.~.~.~ Automatic combined with timing or delay means
29  DF  .~.~.~.~.~ Fluid-controlled
30  DF  .~.~.~.~.~ Mechanical motor-controlled (e.g., clock movement)
31  DF  .~.~.~.~.~ Thermally actuated
32  DF  .~.~.~.~.~ With counting or integrating means (e.g., repetitive for given number of reclosures)
33  DF  .~.~.~.~.~.~ With means providing for operation after variable intervals or fixed intervals of different duration (e.g., first reset occurs) instantaneously, with other at longer intervals)
34  DF  .~.~.~.~.~.~ With lockout
35  DF  .~.~.~ Plural trips or combined operating means for single trip (e.g., magnetic with thermal)
36  DF  .~.~.~.~ With common structural elements
37  DF  .~.~.~.~ With thermal element comprising magnetic flux source
38  DF  .~.~.~ Magnetic
39  DF  .~.~.~.~ With time delay (e.g., thermal)
40  DF  .~.~.~.~.~ Responsive to or proportional to degree of overload condition
41  DF  .~.~.~.~ With magnetic flux winding directly in series with main contacts
42  DF  .~.~.~.~ With adjusting or calibrating means
43  DF  .~.~.~ Thermal
44  DF  .~.~.~.~ Including ambient temperature compensating means
45  DF  .~.~.~.~ With regulating, adjusting or calibrating means
46  DF  .~.~ With contact rebound or other undesirable motion prevention means
47  DF  .~ Utilizing conductive liquid (e.g., mercury)
48  DF  .~.~ Comprising three or more electrodes or circuit-completion means
49  DF  .~.~ With liquid-displacement means
50  DF  .~.~.~ Comprising plural interconnected liquid containers
51  DF  .~.~.~ Magnetic
52  DF  .~.~.~.~ Piston or plunger
53  DF  .~.~.~.~.~ Combined with timing or delay means
54  DF  .~.~.~ Tiltable or rotating liquid chamber
55  DF  .~.~ Armature structure
56  DF  .~.~.~ Comprising freely movable floating slug or mass
57  DF  .~.~ Contact or electrode structure
58  DF  .~.~.~ Mercury or mercury wetted
59  DF  .~ Retarded or delayed type
60  DF  .~.~ Plural sets of contacts alternately, consecutively or selectively opened or closed
61  DF  .~.~ With pneumatic delay means (e.g., dashpot, etc.)
62  DF  .~.~ With hydraulic delay means
63  DF  .~.~ With magnetic or electromagnetically actuated delay means
64  DF  .~.~ With mechanical delay means
65  DF  .~.~.~ Motor or motor-controlled (e.g., clockwork)
66  DF  .~.~ Electrothermal delay means
67  DF  .~.~ Adjustable or regulatable
68  DF  .~ With motor
69  DF  .~.~ Reversible or oscillatable
70  DF  .~.~ Frequency-responsive or synchronous
71  DF  .~.~ Contact actuating structure
72  DF  .~.~.~ Plural contacts
73  DF  .~.~.~ Eccentric or cam
74  DF  .~.~.~ Including brake, clutch or detent
75  DF  .~.~.~.~ Magnetically actuated
76  DF  .~.~.~ Comprising energy storage means (e.g., wound spring)
77  DF  .~.~ With locking, latch or tripping structure
78  DF  .~ Polarity-responsive
79  DF  .~.~ Storage or memory type (e.g., bistable)
80  DF  .~.~ Armature structure
81  DF  .~.~.~ Freely movable within coil or magnetic field between poles
82  DF  .~.~.~ Floating (i.e., no fixed pivot)
83  DF  .~.~ Contact structure of composition
84  DF  .~.~ Magnetic structure (e.g., saturable)
85  DF  .~.~.~ Pole structure
86  DF  .~.~ With adjusting means
87  DF  .~ Periodic (e.g., vibrators)
88  DF  .~.~ Plural periodic switches or with plural pairs of contacts
89  DF  .~.~.~ Selectively, alternately, or consecutively actuated
90  DF  .~.~ With vibrating or oscillating element damping, frequency adjusting or vibration control
91  DF  .~.~ Actuating magnet structure or material
92  DF  .~.~.~ Plural magnets
93  DF  .~.~ Vibratory reed or other periodic contact actuator
94  DF  .~.~.~ Tuned or resonant at a particular frequency
95  DF  .~.~ Armature
96  DF  .~.~.~ Adjustable
97  DF  .~.~ Contact arrangement or composition
98  DF  .~.~.~ Adjustable contacts
99  DF  .~ Alternating or fluctuating current type
100  DF  .~.~ Induction or eddy current (e.g., vane or closed conductive loop)
101  DF  .~.~ Preselected or synchronous frequency responsive
102  DF  .~.~ Polyphase
103  DF  .~.~ With plural magnetic-actuating structures
104  DF  .~.~ With chatter, bounce or vibration-prevention means
105  DF  .~.~ With damping or adjustment means
106  DF  .~ Multiple contact type
107  DF  .~.~ Contacts-selectively, sequentially, alternately, or intermittently actuated
108  DF  .~.~.~ Automatic telephone type
109  DF  .~.~.~.~ Plural or multidirection mechanical selector motions
110  DF  .~.~.~.~.~ With motion-conversion means
111  DF  .~.~.~.~.~ Selector structure
112  DF  .~.~.~.~.~.~ Crossbar type
113  DF  .~.~.~.~ With holding, locking or latching means
114  DF  .~.~.~.~ Rotary selector motion
115  DF  .~.~.~.~ Reciprocating selector motion (e.g., sliding)
116  DF  .~.~.~.~ With reset or selector-restoring means
117  DF  .~.~.~.~ With operational mode-varying means
118  DF  .~.~.~.~ Motor-driven
119  DF  .~.~.~ Plural armatures
120  DF  .~.~.~.~ With interlocking or mechanical connection
121  DF  .~.~.~ Contact-actuation means
122  DF  .~.~.~.~ With rotary or compound motion device (e.g., rack and pinion)
123  DF  .~.~.~.~.~ Pawl and ratchet
124  DF  .~.~.~.~ Armature structure
125  DF  .~.~.~.~.~ Rotary armature
126  DF  .~.~.~.~ Reciprocating or linearly sliding
127  DF  .~.~ Simultaneously actuated
128  DF  .~.~.~ By pivotal or rockable armature
129  DF  .~.~.~.~ Movable contacts or slidable card bar or comb
130  DF  .~.~.~.~ Movable contacts on circular card or comb structure
131  DF  .~.~.~ By reciprocating armature
132  DF  .~.~ With adjustable, replaceable or interchangeable structural features
133  DF  .~.~ Contact structure or arrangement
134  DF  .~.~.~ Grid or coordinate
135  DF  .~.~.~ In pile or stack
136  DF  .~.~ With plural magnet or coil means
137  DF  .~.~.~ Of diverse type
138  DF  .~ Step-by-step type (e.g., closure responsive to predetermined number of control pulses
139  DF  .~.~ With timing or indexing means (e.g., clock mechanism)
140  DF  .~.~ Ratchet and pawl-type actuator
141  DF  .~ With electrothermal-actuating means (e.g., expansible wire)
142  DF  .~.~ Fusible element
143  DF  .~.~ Independently operative
144  DF  .~.~ With armature positioning or adjusting
145  DF  .~.~ Bimetallic element
146  DF  .~.~ Thermomagnetic (e.g., device whose magnetic permeability changes with temperature)
147  DF  .~ Electrodynamically actuated
148  DF  .~.~ Moving coil type
149  DF  .~.~.~ Plural coils
150  DF  .~.~.~ With reset or restoring means
151  DF  .~ Vacuum or hermetically sealed type (e.g., reed switch)
152  DF  .~.~ Plural
153  DF  .~.~ With permanent magnet structure
154  DF  .~.~ Armature, contact or contact-actuating means (e.g., sealed reed)
155  DF  .~ With predetermined current or voltage value-responsive actuator
156  DF  .~ With protective means for switch or contacts
157  DF  .~ With operation-inhibiting means (shock resistant)
158  DF  .~.~ From open position
159  DF  .~ Plural independently operable switches
160  DF  .~.~ Interlocking
161  DF  .~.~.~ With cooperative-actuating means
162  DF  .~.~ With unitary housing, support or flux path
163  DF  .~.~ With unitary or common magnetic flux source
164  DF  .~ Manually or gravity-operated latch with electromagnetic trip
165  DF  .~ Contact-actuating means unitary with latch or trip
166  DF  .~ With latch- or trip-reset means
167  DF  .~ Latching means
168  DF  .~.~ With positive lock (against movement)
169  DF  .~.~ Plural or with auxiliary latch
170  DF  .~.~ Magnetically operated
171  DF  .~.~ Including spring-biasing or energy-storage means
172  DF  .~ Tripping means
173  DF  .~.~ Plural diverse (e.g., manual plus electromagnet)
174  DF  .~.~ Magnetically operated
175  DF  .~.~.~ Utilizing hammer or other impacting means
176  DF  .~.~.~ With adjusting or regulating means
177  DF  .~ Plural magnets or flux sources
178  DF  .~.~ Of diverse electrical characteristics
179  DF  .~.~ Of diverse magnetic characteristics (e.g., permanent plus electromagnet)
180  DF  .~.~ With common core or single armature
181  DF  .~.~.~ Pivoted armature
182  DF  .~.~.~ Magnetic fields opposing (e.g., differential)
183  DF  .~.~ Magnetic fields or torques acting alternately in opposite directions
184  DF  .~.~ With plural reciprocating armatures aligned or rigidly connected
185  DF  .~ Contact-actuating means
186  DF  .~.~ Plural or combined (e.g., manual with other)
187  DF  .~.~ Unitary with armature
188  DF  .~.~ Snap-action
189  DF  .~.~ Mechanical linkage
190  DF  .~.~.~ Including cam, roller or eccentric means
191  DF  .~.~.~ Compound motion device (e.g., toggle)
192  DF  .~.~ With biasing means (open or closed)
193  DF  .~.~ With vibration-, bounce- or chatter-prevention means
194  DF  .~.~ With pressure-maintaining or adjusting means
195  DF  .~.~.~ Magnetic or electrodynamic force
196  DF  .~ Contact composition or structure
197  DF  .~.~ Adjustable or readily detachable
198  DF  .~.~.~ Convertible from normally open to normally closed and vice versa
199  DF  .~.~ Printed circuit
200  DF  .~.~ Pivoted or relatively movable independently of the armature
201  DF  .~ With arc-suppression or extinguishing means
202  DF  .~ With housing or support means
203  DF  .~ With armature structure
204  DF  .~ Through conductor type (i.e., conductor field actuates armature)
205  DF  PERMANENT MAGNET-ACTUATED SWITCHES
206  DF  .~ Plural switches
207  DF  .~ Plural magnets
208  DF  .~ Thermomagnetic
209  DF  MAGNETS AND ELECTROMAGNETS
210  DF  .~ Electron or ion beam deflecting type
211  DF  .~.~ With magnetic shunt
212  DF  .~.~ With adjustable magnetic element (e.g., to change the air gap, or its position on the cathode ray tube)
213  DF  .~.~ With coil structure
214  DF  .~.~.~ With electric or magnetic-shielding means
215  DF  .~ Magnetostrictive-type device
216  DF  .~ Superconductive type
217  DF  .~ Temperature-responsive type (e.g., temp. compensation means)
218  DF  .~.~ With time-delay means
219  DF  .~ Combined with diverse-type art device
220  DF  .~ With magneto-mechanical motive device (e.g., electromagnet with armature)
221  DF  .~.~ Frequency-responsive type
222  DF  .~.~ With relatively movable coil and permanent magnet (e.g., D'Arsonval type) position on the cathode ray tube)
223  DF  .~.~ With relatively movable conductors (e.g., dynamometer)
224  DF  .~.~.~ Induced current-type movable conductor (e.g., eddy current member)
225  DF  .~.~.~.~ Rotating disk
226  DF  .~.~.~.~ Short-circuited winding
227  DF  .~.~ Saturable magnetic type
228  DF  .~.~ With motion-conversion means (e.g., reciprocating to rotary motion)
229  DF  .~.~ With permanent magnet
230  DF  .~.~.~ Polarized electromagnet
231  DF  .~.~.~.~ Varying alternating current amplitude responsive
232  DF  .~.~.~.~ With plural armatures
233  DF  .~.~.~.~.~ With armature-locking means
234  DF  .~.~.~.~ With reversible magnetic flux-type movement (e.g., bistable type)
235  DF  .~.~.~.~ With vibrating reed or spring bar-type armature
236  DF  .~.~ With a shunt path for magnetic flux
237  DF  .~.~.~ Adjustable
238  DF  .~.~ With auxiliary armature-movement control means (e.g., manual)
239  DF  .~.~ With time delay armature-movement control means
240  DF  .~.~.~ Dashpot type
241  DF  .~.~.~ Auxiliary control coil
242  DF  .~.~.~ With plural armatures selectively retarded
243  DF  .~.~ Alternating current type
244  DF  .~.~.~ Flux phase displacement or varying means
245  DF  .~.~.~.~ Shading coil
246  DF  .~.~.~.~ Plural winding type
247  DF  .~.~.~ With chatter- or noise-preventing means
248  DF  .~.~.~.~ Spring or cushion-type vibration absorber
249  DF  .~.~.~.~ Special armature construction or mounting means (e.g., to assure positive seating of armature)
250  DF  .~.~.~ Coil construction or mounting means
251  DF  .~.~.~ With plunger-type armature
252  DF  .~.~.~ With vibrating armature
253  DF  .~.~ With armature latch means (e.g., means to retain armature in open or closed position
254  DF  .~.~.~ With latch-control winding
255  DF  .~.~ With plunger-type armature
256  DF  .~.~.~ Plural coils controlling a single armature
257  DF  .~.~.~ With shock-absorbing means (e.g., means to absorb the shock of armature or plunger)
258  DF  .~.~.~ With armature stroke adjustment
259  DF  .~.~.~ Plural plungers
260  DF  .~.~.~ With sealed enclosure (e.g., dust or moistureproof)
261  DF  .~.~.~ Armature structure or material
262  DF  .~.~.~.~ With centering or aligning or guiding means
263  DF  .~.~.~.~ With plunger rotation preventing means (e.g., means to prevent undesired rotation of the plunger during movement)
264  DF  .~.~.~.~ Sectional plunger
265  DF  .~.~ Plural armatures actuated by single electromagnetic coil
266  DF  .~.~ Plural coils or magnets control armature movement
267  DF  .~.~.~ With plural armatures
268  DF  .~.~.~ Coils or magnets being separately or selectively controllable
269  DF  .~.~ With dynamically balanced armature
270  DF  .~.~ Armature-mounting means
271  DF  .~.~.~ With armature bounce or vibration-preventing means
272  DF  .~.~.~ Rotating disk or cylindrical armature
273  DF  .~.~.~ With armature-adjusting means (e.g., means to adjust the relative distance between core and armature)
274  DF  .~.~.~ With armature-biasing means or bias-adjustment means
275  DF  .~.~.~ Hinge joint type armature-mounting means
276  DF  .~.~.~ Pivot support type armature-mounting means
277  DF  .~.~ With shock absorption, vibration or bounce-preventing means
278  DF  .~.~ With casing or enclosure
279  DF  .~.~ Armature shape, structure or material
280  DF  .~.~.~ Balls, filings or granular material
281  DF  .~.~ Core or pole shape, structure or material
282  DF  .~.~ Coil shape, structure or material
283  DF  .~ Blade sharpening or conditioning type magnets
284  DF  .~ For magnetizing or demagnetizing
285  DF  .~ Work or object holding type
286  DF  .~.~ With workpiece to magnet adapted or fixture (e.g., to bridge flux)
287  DF  .~.~.~ Angularly adjustable fixture
288  DF  .~.~ Rotary-type magnetic chuck (permanent or electromagnet type)
289  DF  .~.~ Electromagnet type (e.g., electromagnetic chuck)
290  DF  .~.~.~ With circuit control means
291  DF  .~.~.~ Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins)
292  DF  .~.~.~.~ Hermetically sealed or moisture-proofed
293  DF  .~.~.~.~ Hand-held type
294  DF  .~.~.~.~ With outer casing or housing
295  DF  .~.~ With magnetic-hold control means (e.g., means to control the hold strength)
296  DF  .~ Magnet structure or material
297  DF  .~.~ Core structure
298  DF  .~.~.~ Movable or adjustable cores
299  DF  .~.~ Coil structure or material
300  DF  .~.~.~ With cooling means
301  DF  .~.~ With electric- or magnetic-shielding means
302  DF  .~.~ Permanent magnets
303  DF  .~.~.~ Enclosed in flexible plastic, cloth or tape
304  DF  .~.~.~ With flux leakage-reducing means
305  DF  .~.~.~ Magnetic plug type (e.g., crankcase plug)
306  DF  .~.~.~ Plural magnets