Patent US3581036A successfully refreshed from Google Patents.
US3581036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-pull electric switch operator
Assignee: Cutler Hammer Inc
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Filing: 1969-10-13
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Granted: 1971-05-25
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Expires: 1989-10-13
Abstract
Abstract A single return spring biases a switch operator against movement to either operating position by being compressed against either an internal shoulder formed in the operator housing or against the inner edge of an inserted ring. A pair of projections on the movable operator nest between a pair of switch actuating levers to bear directly downward upon one lever in the push direction and to rock the other lever downward in the pull direction. The levers are designed with a two-to-one mechanical advantage to reduce the stroke length of the operator.
Inventors
- 👤 William G Dennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:20
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/50; H01H13/56; H01H13/58; H01H13/02; H01H13/04; H01H13/06; H01H13/12; H01H13/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
152 words
A push-pull switch comprising, in combination: a cylindrical housing; an axially movable member mounted within said housing; button means secured to said movable member and extending beyond one end of said housing; electrical switch means attached to the other end of said housing, said switch means comprising a pair of independently movable pushbuttons each having individual electrical switch means operated thereby; a pair of levers pivotally mounted within said housing adjacent said switch means, each of said levers having a portion thereof in engagement with a respective one of said pushbuttons; projecting means on said movable member bearing directly upon one of said levers to pivot said lever to depress the respective pushbutton upon inward axial movement of said movable member; and a portion of the other of said levers overlying said projecting means to pivot the latter lever to depress the respective pushbutton upon axial outward movement of said movable member.
Claim 2
Dependent Claim
152 words
A push-pull switch comprising, in combination: a cylindrical housing; an axially movable member mounted within said housing; button means secured to said movable member and extending beyond one end of said housing; electrical switch means attached to the other end of said housing, said switch means comprising a pair of independently movable pushbuttons each having individual electrical switch means operated thereby; a pair of levers pivotally mounted within said housing adjacent said switch means, each of said levers having a portion thereof in engagement with a respective one of said pushbuttons; projecting means on said movable member bearing directly upon one of said levers to pivot said lever to depress the respective pushbutton upon inward axial movement of said movable member; and a portion of the other of said levers overlying said projecting means to pivot the latter lever to depress the respective pushbutton upon axial outward movement of said movable member.
Claim 3
Dependent Claim
83 words
The combination according to claim 1 together with; spring means partially compressed within said housing between an annular shoulder formed in said housing and the forward edge of a ring inserted within said housing; means on said movable member abutting said spring means adjacent said shoulder to define a normal inward position for said movable member; and means depending from said movable member through said spring means to engage the opposite end thereof to define a normal outward position for said movable member.
Claim 4
Dependent Claim
74 words
The combination according to claim 2 wherein: inward movement of said movable member compresses said spring means between said means on said movable member and said forward edge of said ring to bias said movable member outwardly of said housing; and outward movement of said movable member compresses said spring means between said shoulder in said housing and said means depending from said movable member to bias said movable member inwardly of said housing.
Claim 5
Dependent Claim
66 words
The combination according to claim 3 wherein said levers are generally U-shaped members, said levers pivotally mounted within said housing on common pivot pin means extending through openings near the outer ends of legs on said levers, the bight portions of said levers disposed at opposite sides of said housing and having portions extending extending therefrom to be in engagement with respective ones of said pushbuttons.
Claim 6
Dependent Claim
21 words
The combination according to claim 4 wherein said pivot pin means are secured in diametrically opposed holes formed in said ring.
Claim 7
Dependent Claim
46 words
The combination according to claim 5 wherein said projecting means on said movable member comprise a pair of projections extending inwardly fRom said depending portions to extend across the legs of one of said levers and to extend under portions of the other of said levers.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |