US3684850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Programmable lever switch with snap-in detachable cam detent means
Assignee: Guardian Electric Manufacturing Co
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Filing: 1970-05-26
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Granted: 1972-08-15
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Expires: 1990-05-26
Abstract
Abstract A programmable lever switch has a frame with a pivotally attached lever for manually switching electrical contact leaves by means of switching fingers. The fingers are rigidly attached to one end of the lever. A pair of programmed cam inserts are detachably secured to the frame and engage a detent roller joined between the switching fingers and biased away from the lever. Each pair of cams controls the type of switching action of the lever switch upon displacement of the lever.
Inventors
- 👤 Charles J Kaderbek
- 👤 Frank S Vojir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:33
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/28; H01H19/00; H01H19/54; H01H19/60; H01H19/62; H01H11/00; H01H11/0006; H01H2011/0043
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A programmable lever switch comprising, in combination: a supporting frame having an opposing pair of windows defined in said frame, a lever pivotally secured to said frame and pivotal about a fixed point with respect to said frame to at least two switching positions having a first operable end and a second contact switching end, electrical contact means on said frame for selective engagement with said second end of said lever, linkage means secured to said contact switching end, and, detachable programming cam insert means detachably secured by snap in locking tab means in said windows, in said frame for engaging with said linkage means for controlling the switching action of said lever switch.
Claim 2
Dependent Claim
114 words
A programmable lever switch comprising, in combination: a supporting frame having an opposing pair of windows defined in said frame, a lever pivotally secured to said frame and pivotal about a fixed point with respect to said frame to at least two switching positions having a first operable end and a second contact switching end, electrical contact means on said frame for selective engagement with said second end of said lever, linkage means secured to said contact switching end, and, detachable programming cam insert means detachably secured by snap in locking tab means in said windows, in said frame for engaging with said linkage means for controlling the switching action of said lever switch.
Claim 3
Dependent Claim
42 words
The device of claim 1 wherein said programming cam means comprise two cam windows of self-lubricating molded plastic having said tab means rigidly secured to said cam windows for detachably securing said cam windows within the frame windows defined in said frame.
Claim 4
Dependent Claim
39 words
The device of claim 1 wherein said programming cam insert means include a cam surface insert means for a momentarily returning said lever to a central lever position when said lever is displaced away from said central lever position.
Claim 5
Dependent Claim
43 words
The device of claim 1 wherein said programming detent cam insert means includes a cam surface insert means for locking said lever into lever position distinct from the central lever position such that a predetermiNed locked contact is effected between said contact means.
Claim 6
Dependent Claim
21 words
The device of claim 1 including lamp means for illuminating said programming cam insert means detachably secured to said supporting frame.
Claim 7
Dependent Claim
38 words
The device of claim 1 including a letter code embossed on said programming cam means such that the program of such said switch in a particular lever position may be easily identified by reference to said letter code.
Claim 8
Dependent Claim
107 words
In a lever switch of the type having a frame having a pair of opposing windows defined in said frame and a contact engaging lever mounted for pivotal motion on said frame about a fixed point with respect to said frame, the improvement comprising, in combination, linkage means for said lever, interchangeable cam insert means comprising a pair of cams of self-lubricating molded plastic having tab means rigidly secured to said cams for snap in locking of said cams to permit engagement of said cams with said lever through said linkage means and provide for interchangeable combinations of momentary and locked switching actions by said lever switch.
Claim 9
Dependent Claim
107 words
In a lever switch of the type having a frame having a pair of opposing windows defined in said frame and a contact engaging lever mounted for pivotal motion on said frame about a fixed point with respect to said frame, the improvement comprising, in combination, linkage means for said lever, interchangeable cam insert means comprising a pair of cams of self-lubricating molded plastic having tab means rigidly secured to said cams for snap in locking of said cams to permit engagement of said cams with said lever through said linkage means and provide for interchangeable combinations of momentary and locked switching actions by said lever switch.
Claim 10
Dependent Claim
38 words
The improvement of claim 7 including cam surface means defined in said cams engaging said linkage means and controlling movement of said lever such that said lever may not be moved without application of a minimal switching force.
References Cited (Backward Citations)
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |