Patent US3601727A successfully refreshed from Google Patents.
US3601727A
Expired / Lapsed
US
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Magnetic snap action switch
Assignee: Cutler Hammer Inc
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Filing: 1970-03-09
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Granted: 1971-08-24
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Expires: 1990-03-09
Abstract
Abstract A combination spring and magnetic snap action switch of the momentary type. It employs spaced-apart pairs of stationary contacts and a movable contactor which are formed of magnetic materials. A spring-biased reciprocably movable plunger carrying convexly curved spring washers on opposite sides of the contactor acts upon movement of the plunger in opposite direction to move the contactor with snap action between the spaced-apart pairs of stationary contacts.
Inventors
- 👤 Harold W Hults
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:21
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/50; H01H13/506; H01H5/00; H01H5/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
In a snap action electrical switch, in combination; a. an insulating housing having a cavity and an opening through one side thereof; b. spaced apart stationary contacts formed of a magnetic material mounted within said housing cavity; c. reciprocable switch operating means comprising an actuator extending through the housing opening and a plunger within said cavity having spaced apart abutments thereon; d. a contactor formed of a permanent magnet material disposed about said plunger; e. a convexly curved spring washer disposed about said plunger between one of said abutments and one side of said contactor; f. means biasing said plunger in a direction wherein said contactor assumes a given operating position relative to said stationary contacts and said actuator assumes an outward extreme position relative to said housing, said actuator being movable against said bias inwardly of said housing to compress said spring washer to thereby build up stored energy to effect following snap action movement of said contactor to an opposite operating position relative to said stationary contacts.
Claim 2
Dependent Claim
169 words
In a snap action electrical switch, in combination; a. an insulating housing having a cavity and an opening through one side thereof; b. spaced apart stationary contacts formed of a magnetic material mounted within said housing cavity; c. reciprocable switch operating means comprising an actuator extending through the housing opening and a plunger within said cavity having spaced apart abutments thereon; d. a contactor formed of a permanent magnet material disposed about said plunger; e. a convexly curved spring washer disposed about said plunger between one of said abutments and one side of said contactor; f. means biasing said plunger in a direction wherein said contactor assumes a given operating position relative to said stationary contacts and said actuator assumes an outward extreme position relative to said housing, said actuator being movable against said bias inwardly of said housing to compress said spring washer to thereby build up stored energy to effect following snap action movement of said contactor to an opposite operating position relative to said stationary contacts.
Claim 3
Dependent Claim
61 words
The combination according to claim 1, wherein said switch is provided with a second pair of spaced-apart stationary contacts mounted within the housing cavity in parallel-spaced arrangement relative to respective ones of the first-mentioned stationary contacts, and wherein another convexly curved spring washer is disposed about said plunger between the other of said abutments and the other side of said contactor.
Claim 4
Dependent Claim
56 words
The combination according to claim 2, wherein said contactor when said actuator is in its outward extreme position is in engagement with said first mentioned stationary contacts, and wherein in such position of the actuator the last-mentioned spring washer is compressively flattened between said other of said plunger abutments and said other side of said contactor.
Claim 5
Dependent Claim
60 words
The combination according to claim 3, wherein engagement of said contactor with said first mentioned pair of stationary contacts completes one electrical circuit, and wherein movement of said contactor out of engagement with said first-mentioned contacts with snap action and into engagement with said second pair of stationary contacts interrupts said one electrical circuit and completes a second electrical circuit.
Claim 6
Dependent Claim
24 words
The combination according to claim 2, wherein said stationary contacts and said contactor have an outer layer of a good electrical conductive contact metal.
References Cited (Backward Citations)
US3175060A
Cited
US3256400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |