US3634802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal cycling switch
Assignee: Westinghouse Electric Corp
•
Filing: 1970-03-19
•
Granted: 1972-01-11
•
Expires: 1990-03-19
Abstract
Abstract A thermal cycling switch in which the main bimetal and the ambient compensating bimetal are supported from a common terminal with the adjustable means for the differential setting extending between the compensating bimetal and the main bimetal assembly. Also, the terminals for the switch are held by the switch casing in a way which braces the terminals against movement out of their normal position.
Inventors
- 👤 George C Aldous
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:17
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/04; H01H1/00; H01H1/58; H01H19/00; H01H19/02; H01H19/10; H01H19/11
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
In a thermal cycling switch having a casing, a unitary assembly supported by said casing comprising: a terminal secured to said casing; a subassembly including a main bimetal and heater therefor carrying a cycling contact at one end thereof, said subassembly including means for pivotally securing its other end to said terminal; an ambient compensating bimetal secured to said terminal and including a portion thereof extending in the general direction of said other end of said subassembly; calibration and link means extending between said ambient compensating bimetal and a part of said subassembly free to move for adjusting the position of said cycling contact and also for serving as the link relating movement of said main bimetal and heater in accordance with movement of said compensating bimetal; and said unitary assembly is supported from said casing solely through said securement of said terminal to said casing.
Claim 2
Dependent Claim
146 words
In a thermal cycling switch having a casing, a unitary assembly supported by said casing comprising: a terminal secured to said casing; a subassembly including a main bimetal and heater therefor carrying a cycling contact at one end thereof, said subassembly including means for pivotally securing its other end to said terminal; an ambient compensating bimetal secured to said terminal and including a portion thereof extending in the general direction of said other end of said subassembly; calibration and link means extending between said ambient compensating bimetal and a part of said subassembly free to move for adjusting the position of said cycling contact and also for serving as the link relating movement of said main bimetal and heater in accordance with movement of said compensating bimetal; and said unitary assembly is supported from said casing solely through said securement of said terminal to said casing.
Claim 3
Dependent Claim
30 words
In a thermal cycling switch according to claim 1 wherein: said extending portion of said ambient compensating bimetal is disposed in a generally face-to-face spaced apart relation to said subassembly.
Claim 4
Dependent Claim
76 words
In a thermal cycling switch according to claim 1 wherein: said means for pivotally securing said subassembly includes a resilient leaf having one end secured to an end portion of said main bimetal and heater, and the other end secured to said terminal; and said extending portion of said compensating bimetal extends only for approximately the length of said leaf so that heat transfer through a facing relationship of said heater and compensating bimetal is minimized.
Claim 5
Dependent Claim
47 words
In a thermal cycling switch according to claim 3 wherein: said calibration and link means is adjustably carried by said extending portion of said compensating bimetal and bears against said subassembly at the junction between said leaf and the main bimetal and heater portion of said assembly.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |