Patent US3670121A successfully refreshed from Google Patents.
US3670121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical switch
Assignee: Cinch Connectors Ltd
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Filing: 1970-07-09
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Granted: 1972-06-13
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Expires: 1990-07-09
Abstract
Abstract An electrical switch includes a first pivotally mounted actuating member, the rocking movement of which is transmitted to a second pivotally mounted actuating member whose rocking movement effects the operation of a leaf spring over its dead center position to open and close the switch contacts. The said first actuating member has a depending lug which engages with and rides over sloping ramps forming part of the said second actuating member.
Inventors
- 👤 John Arthur Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:23
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/02; H01H23/12; H01H23/16; H01H23/162
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
231 words
An electrical switch comprising a housing formed of insulating material, at least two fixed contacts and two movable contacts and snap-over ramp springs for moving the movable contacts, a first switch actuating member pivotally mounted in the housing and provided with a first lug and a second lug, angularly disposed to one another, a second switch actuating member comprising a base pivotally mounted in the housing, one face of said secOnd actuating member having projections engaging the ramp springs and the opposite face provided with a pair of ramp like surfaces, the surface of each pair extending in angular realtion to one another to define at least two obtuse angles, the apexs of which are approximately at the pivotal center of the base, each lug engages a ramp-like surface, the arrangement being such that rocking or pivotal movement imparted to said first actuating member will cause the first lug to ride over the first ramp like surface and the second lug to ride over the second ramp like surface so as to pivot said second actuating member whereby the projection on the latter will move the ramp spring over one or other sides of its dead center so as to snap said second actuating member into a position to cause said spring to offset the movement of the movable contact relative to the fixed contact to open or close the switch.
Claim 2
Dependent Claim
231 words
An electrical switch comprising a housing formed of insulating material, at least two fixed contacts and two movable contacts and snap-over ramp springs for moving the movable contacts, a first switch actuating member pivotally mounted in the housing and provided with a first lug and a second lug, angularly disposed to one another, a second switch actuating member comprising a base pivotally mounted in the housing, one face of said secOnd actuating member having projections engaging the ramp springs and the opposite face provided with a pair of ramp like surfaces, the surface of each pair extending in angular realtion to one another to define at least two obtuse angles, the apexs of which are approximately at the pivotal center of the base, each lug engages a ramp-like surface, the arrangement being such that rocking or pivotal movement imparted to said first actuating member will cause the first lug to ride over the first ramp like surface and the second lug to ride over the second ramp like surface so as to pivot said second actuating member whereby the projection on the latter will move the ramp spring over one or other sides of its dead center so as to snap said second actuating member into a position to cause said spring to offset the movement of the movable contact relative to the fixed contact to open or close the switch.
Claim 3
Dependent Claim
37 words
A switch according to claim 1, wherein the means pivotally supporting the said first arm of said leaf spring comprises an inwardly extending portion of a terminal post which includes a portion extending outwardly of the housing.
Claim 4
Dependent Claim
31 words
A switch according to claim 1, wherein the said second arm is formed with a recess into which the free end of the said projection on said second actuating member extends.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |