Patent US2404171A successfully refreshed from Google Patents.
US3205327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay relay having ambient compensated thermally responsive actuating means
Assignee: Texas Instruments Inc
•
Filing: 1963-02-11
•
Granted: 1965-09-07
•
Expires: 1983-02-11
Abstract
No abstract record available.
Inventors
- 👤 John O Moorhead
- 👤 John D Goodin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:19
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/10; H01H43/00; H01H43/30; H01H43/301; H01H43/302; H01H43/304; H01H61/00; H01H61/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN ELECTRICAL SWITCH COMPRISING A BASE; CONTACTS MOUNTED ON SAID BASE; A PAIR OF COMPOSITE THEREMOSTATIC BLADES CANTILEVER MOUNTED ADJACENT ONE END THEREOF IN OVERLYING RELATIONSHIP ON SAID BASE, LOST MOTION MEANS INTERCONNECTING THE OTHERENDS THEREOF PERMITTING RELATIVE SLIDING MOVEMENT BETWEEN SAID OTHER NDS AND CONFINING UPWARD AND DOWNWARD MOVEMENT OF THE SAID OTHER ENDS TO MOVEMENT IN UNISON, THE INSIDE COMPONENTS OF EACH OF THE BLADES SUCH AS ARE NEAREST ONE ANOTHER HAVING SIMILAR COEFFICIENTS OF THERMAL EXPANSION, WHEREBY MOVEMENT OF SAID BLADES IN RESPONSE TO CHANGES IN AMBIENT TEMPERATURE WILL BE MINIMIZED, AND SAID SWITCH INCLUDING MEANS FOR HEATING ONE OF SAID BLADES TO A TEMPERATURE DIFFERENT THAN THAT OF THE OTHER OF SAID BLADES WHEREBY TO CAUSE SAID BLADES TO MOVE IN UNISON IN ONE DIRECTION TO PROVIDE CONTACT ACTUATION MOTION FOR SAID CONTACTS.
Claim 2
Dependent Claim
137 words
AN ELECTRICAL SWITCH COMPRISING A BASE; CONTACTS MOUNTED ON SAID BASE; A PAIR OF COMPOSITE THEREMOSTATIC BLADES CANTILEVER MOUNTED ADJACENT ONE END THEREOF IN OVERLYING RELATIONSHIP ON SAID BASE, LOST MOTION MEANS INTERCONNECTING THE OTHERENDS THEREOF PERMITTING RELATIVE SLIDING MOVEMENT BETWEEN SAID OTHER NDS AND CONFINING UPWARD AND DOWNWARD MOVEMENT OF THE SAID OTHER ENDS TO MOVEMENT IN UNISON, THE INSIDE COMPONENTS OF EACH OF THE BLADES SUCH AS ARE NEAREST ONE ANOTHER HAVING SIMILAR COEFFICIENTS OF THERMAL EXPANSION, WHEREBY MOVEMENT OF SAID BLADES IN RESPONSE TO CHANGES IN AMBIENT TEMPERATURE WILL BE MINIMIZED, AND SAID SWITCH INCLUDING MEANS FOR HEATING ONE OF SAID BLADES TO A TEMPERATURE DIFFERENT THAN THAT OF THE OTHER OF SAID BLADES WHEREBY TO CAUSE SAID BLADES TO MOVE IN UNISON IN ONE DIRECTION TO PROVIDE CONTACT ACTUATION MOTION FOR SAID CONTACTS.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |