US3256410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated time delay relay
Assignee: Branson Corp
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Filing: 1963-08-16
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Granted: 1966-06-14
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Bastian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:30
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/10; H01H43/00; H01H43/30; H01H43/301; H01H43/302; H01H61/00; H01H61/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AN ELECTRICAL TIME-DELAY RELAY COMPRISING, (A) A BASE MADE OF A METAL HAVING A RELATIVELY HIGH COEFFICIENT OF THERMAL EXPANSION, (B) A GENERALLY C-SHAPED ACTUATOR MADE OF A METAL HAVING A RELATIVELY HIGH TEMPERATRE COEFFICIENT OF EXPANSION AND CARRIED BY SAID BASE, SAID ACTUATOR HAVING AN ELONGATED BASE PORTION JOINED TO LEGS OF UNEQUAL LENGTH, (C) A PAIR OF DIVERGING FINGERS MADE OF A METAL HAVING A NEGLIGIBLE TEMPERATURE COEFFICIENT OF EXPANSION, ONE END OF THE ONE FINGER BEING SECURED TO THE SHORTER LEG OF THE ACTUATOR, THE CORRESPONDING END OF THE OTHER FINGER BEING SECURED TO SAID BASE, AND THE FREE ENDS OF THE FINGERS BEING JOINED TOGETHER, (D) A MOVABLE CONTACT SECURED TO THE JOINED ENDS OF THE FINGERS, (E) A COOPERATING STATIONARY CONTACT CARRIED BY THE BASE AND INSULATED THEREFROM, AND (F) A HEATER IN HEAT-TRANSFER RELATION TO THE BASE PORTION OF THE ACTUATOR.
Claim 2
Dependent Claim
147 words
AN ELECTRICAL TIME-DELAY RELAY COMPRISING, (A) A BASE MADE OF A METAL HAVING A RELATIVELY HIGH COEFFICIENT OF THERMAL EXPANSION, (B) A GENERALLY C-SHAPED ACTUATOR MADE OF A METAL HAVING A RELATIVELY HIGH TEMPERATRE COEFFICIENT OF EXPANSION AND CARRIED BY SAID BASE, SAID ACTUATOR HAVING AN ELONGATED BASE PORTION JOINED TO LEGS OF UNEQUAL LENGTH, (C) A PAIR OF DIVERGING FINGERS MADE OF A METAL HAVING A NEGLIGIBLE TEMPERATURE COEFFICIENT OF EXPANSION, ONE END OF THE ONE FINGER BEING SECURED TO THE SHORTER LEG OF THE ACTUATOR, THE CORRESPONDING END OF THE OTHER FINGER BEING SECURED TO SAID BASE, AND THE FREE ENDS OF THE FINGERS BEING JOINED TOGETHER, (D) A MOVABLE CONTACT SECURED TO THE JOINED ENDS OF THE FINGERS, (E) A COOPERATING STATIONARY CONTACT CARRIED BY THE BASE AND INSULATED THEREFROM, AND (F) A HEATER IN HEAT-TRANSFER RELATION TO THE BASE PORTION OF THE ACTUATOR.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |