US3560672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guarded position selector switch with stop position means
Assignee: LUCAS LEDEX Inc
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Filing: 1969-01-21
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Granted: 1971-02-02
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Expires: 1989-01-21
Abstract
Abstract A rotary circuit selector switch is provided with a limited range of unguarded switch positions by fixing a radially extending abutment to the operating shaft for the switch and fixing peripherally spaced axially extending stops to a stationary frame for the switch. The range of unguarded switch positions is determined by the space between the stops in which the abutment is free to reciprocate. A guarded switch position is provided by giving the shaft freedom for limited axial movement against an opposing spring and by shortening the axial length of one of the stops so as to permit the abutment to pass the shortened stop when the shaft has been moved axially against the opposing spring. The guarded switch position is so named because a deliberate effort on the part of the switch operator is required to reach the guarded position.
Inventors
- 👤 Raymond W Ludlum
- 👤 David F Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:09
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/02; H01H19/10; H01H19/11; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
195 words
A switch device comprising, in combination: a frame, a rotary assembly journaled in said frame for rotation about a rotary axis, switch means having parts connected respectively to said rotary assembly and said frame and switchable between plural operating positions by rotation of said rotary assembly about said rotary axis, said rotary assembly including an abutment, a first stop connected to said frame, said rotary assembly movable axially relative to said frame between first and second positions, said abutment, when said rotary assembly is rotated in said first position, operative to engage said first stop thereby limiting the number of operating positions reached by said switch means when said rotary assembly is in said first position, said abutment, when said rotary assembly is rotated in said second position, operative to pass said first stop thereby adding to the number of operating positions reached by said switch means, said switch device including a second stop connected to said frame, said second stop operative when said rotary assembly is rotated in said second position to engage said abutment thereby limiting the operating positions reached by said switch means when said rotary assembly is in said second position.
Claim 2
Dependent Claim
195 words
A switch device comprising, in combination: a frame, a rotary assembly journaled in said frame for rotation about a rotary axis, switch means having parts connected respectively to said rotary assembly and said frame and switchable between plural operating positions by rotation of said rotary assembly about said rotary axis, said rotary assembly including an abutment, a first stop connected to said frame, said rotary assembly movable axially relative to said frame between first and second positions, said abutment, when said rotary assembly is rotated in said first position, operative to engage said first stop thereby limiting the number of operating positions reached by said switch means when said rotary assembly is in said first position, said abutment, when said rotary assembly is rotated in said second position, operative to pass said first stop thereby adding to the number of operating positions reached by said switch means, said switch device including a second stop connected to said frame, said second stop operative when said rotary assembly is rotated in said second position to engage said abutment thereby limiting the operating positions reached by said switch means when said rotary assembly is in said second position.
Claim 3
Dependent Claim
41 words
The switch device of claim 1 wherein said first and second stops are circumferentially spaced about said rotary axis and, when said rotary assembly is in said first position, said abutment projects into the space between said first and second stops.
Claim 4
Dependent Claim
33 words
The device of claim 2 wherein said frame includes a stop ring encircling said rotary axis, said first and second stops projecting axially from said ring at locations spaced circumferentially on said ring.
Claim 5
Dependent Claim
51 words
The device of claim 3 wherein the axial projection of said second stop from said ring exceeds the axial projection of said first stop from said ring, said abutment, when said rotary assembly is in said second position, operative to pass said first stop but inoperative to pass said second stop.
Claim 6
Dependent Claim
236 words
A switch device comprising, in combination: a frame, a rotary assembly journaled in said frame for rotation about a rotary axis, switch means having parts connected respectively to said rotary assembly and said frame and switchable between plural operating positions by rotation of said rotary assembly about said rotary axis, said rotary assembly including an abutment, a first stop connected to said frame, said rotary assembly movable axially relative to said frame between first and second positions, yielding means acting between said frame and said rotary assembly to bias said rotary assembly to said first position, said abutment, when said rotary assembly is rotated in said first position, operative to engage said first stop thereby limiting the number of operating positions reached by said switch means when said rotary assembly is in said first position, said abutment, when said rotary assembly is rotated in said second position, operative to pass said first stop thereby adding to the number of operating positions reached by said switch means, said rotary assembly including a shaft coaxial with said rotary axis, a fastener enGaging said shaft, said yielding means comprising a spring coiled around said shaft and acting between said fastener and a portion of said frame to bias said shaft to said one position, said spring compressing to a substantially rigid sleeve between said fastener and said frame to terminate axial movement of said shaft at said second position.
Claim 7
Dependent Claim
236 words
A switch device comprising, in combination: a frame, a rotary assembly journaled in said frame for rotation about a rotary axis, switch means having parts connected respectively to said rotary assembly and said frame and switchable between plural operating positions by rotation of said rotary assembly about said rotary axis, said rotary assembly including an abutment, a first stop connected to said frame, said rotary assembly movable axially relative to said frame between first and second positions, yielding means acting between said frame and said rotary assembly to bias said rotary assembly to said first position, said abutment, when said rotary assembly is rotated in said first position, operative to engage said first stop thereby limiting the number of operating positions reached by said switch means when said rotary assembly is in said first position, said abutment, when said rotary assembly is rotated in said second position, operative to pass said first stop thereby adding to the number of operating positions reached by said switch means, said rotary assembly including a shaft coaxial with said rotary axis, a fastener enGaging said shaft, said yielding means comprising a spring coiled around said shaft and acting between said fastener and a portion of said frame to bias said shaft to said one position, said spring compressing to a substantially rigid sleeve between said fastener and said frame to terminate axial movement of said shaft at said second position.
Claim 8
Dependent Claim
249 words
A switch device comprising, in combination: a frame, a rotary assembly journaled in said frame for rotation about a rotary axis, switch means having parts connected respectively to said rotary assembly and said frame and switchable between plural operating positions by rotation of said rotary assembly about said rotary axis, said rotary assembly including an abutment, a first stop mounted on said frame, said rotary assembly movable axially relative to said frame between first and second positions, said abutment, when said rotary assembly is rotated in said first position, operative to engage said first stop thereby limiting the number of operating positions reached by said switch means when said rotary assembly is in said first position, said abutment, when said rotary assembly is rotated in said second position, operative to pass said first stop thereby adding to the number of operating positions reached by said switch means, yielding means acting between said frame and said rotary assembly to bias said rotary assembly to said first position, said frame including an index plate, said rotary assembly caging a detent, said detent movable axially relative to said rotary assembly, said switch device including a detent spring acting between said rotary assembly and said detent to bias said detent axially against said index plate, the reaction of said detent spring against said rotary assembly opposing the bias of said yielding means, the bias of said yielding means on said rotary assembly exceeding the reaction of said detent spring against said rotary assembly.
Claim 9
Dependent Claim
249 words
A switch device comprising, in combination: a frame, a rotary assembly journaled in said frame for rotation about a rotary axis, switch means having parts connected respectively to said rotary assembly and said frame and switchable between plural operating positions by rotation of said rotary assembly about said rotary axis, said rotary assembly including an abutment, a first stop mounted on said frame, said rotary assembly movable axially relative to said frame between first and second positions, said abutment, when said rotary assembly is rotated in said first position, operative to engage said first stop thereby limiting the number of operating positions reached by said switch means when said rotary assembly is in said first position, said abutment, when said rotary assembly is rotated in said second position, operative to pass said first stop thereby adding to the number of operating positions reached by said switch means, yielding means acting between said frame and said rotary assembly to bias said rotary assembly to said first position, said frame including an index plate, said rotary assembly caging a detent, said detent movable axially relative to said rotary assembly, said switch device including a detent spring acting between said rotary assembly and said detent to bias said detent axially against said index plate, the reaction of said detent spring against said rotary assembly opposing the bias of said yielding means, the bias of said yielding means on said rotary assembly exceeding the reaction of said detent spring against said rotary assembly.
Claim 10
Dependent Claim
48 words
The switch device of claim 6 wherein said frame includes a stop ring surrounding said rotary axis, said first stop attached to and projecting axially from said stop ring, said stop ring having an open center, said detent passing through said open center to engage said index plate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |