Patent US3859616A successfully refreshed from Google Patents.
US3859616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control device
Assignee: Individual
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Filing: 1973-11-01
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Granted: 1975-01-07
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Expires: 1993-11-01
Abstract
Abstract The temperature control device described is humidity-compensated and comprises a temperature-sensitive element which changes its shape in response to changes in temperature, and a humiditysensitive element which changes its shape in response to changes in humidity, each of the elements carrying an electrical contact, the two contacts being so disposed so as to be engageable with each other to close an electrical circuit under predetermined temperature and humidity conditions as sensed by the two elements.
Inventors
- 👤 Shaul P Ladany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:36
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/48; G01K5/56; G01K5/62; H; H01; H01H; H01H35/00; H01H35/42; H01H37/00; H01H37/02; H01H37/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
211 words
A temperature control device comprising: a temperaturesensitive element which changes its shape in response to changes in temperature; a first electrical contact carried by said temperature-sensitive element and movable in a first plane during changes in shape of the temperature-sensitive element; a humidity-sensitive hygrometer coil adapted to wind and unwind during changes in humidity; the inner end of said hygrometer coil being fixed, and the outer end carrying an extension which is movable by the change in shape of the hygrometer coil arising from changes in humidity; and a second electrical contact carried by said extension of the hygrometer coil; said hygrometer coil and extension being substantially coplanar with said first plane in which the first electrical contact moves so that changes in shape of the hygrometer coil causes the second electrical contact also to move in said first plane of movement of the first electrical contact; the arrangement being such that a decrease in humidity causes the second electrical contact carried by the hygrometer coil to move towards the first electrical contact to effect engagement between the two at a lower temperature, and an increase in humidity causes the second electrical contact to move away from the first electrical contact to effect engagement between the two at a higher temperature.
Claim 2
Dependent Claim
211 words
A temperature control device comprising: a temperaturesensitive element which changes its shape in response to changes in temperature; a first electrical contact carried by said temperature-sensitive element and movable in a first plane during changes in shape of the temperature-sensitive element; a humidity-sensitive hygrometer coil adapted to wind and unwind during changes in humidity; the inner end of said hygrometer coil being fixed, and the outer end carrying an extension which is movable by the change in shape of the hygrometer coil arising from changes in humidity; and a second electrical contact carried by said extension of the hygrometer coil; said hygrometer coil and extension being substantially coplanar with said first plane in which the first electrical contact moves so that changes in shape of the hygrometer coil causes the second electrical contact also to move in said first plane of movement of the first electrical contact; the arrangement being such that a decrease in humidity causes the second electrical contact carried by the hygrometer coil to move towards the first electrical contact to effect engagement between the two at a lower temperature, and an increase in humidity causes the second electrical contact to move away from the first electrical contact to effect engagement between the two at a higher temperature.
Claim 3
Dependent Claim
39 words
A device according to claim 1 wherein said temperature-sensitive element is in the form of a bimetallic coil, the inner end of which is fixed and the outer end of which includes an extension carrying the temperature electrical contact.
Claim 4
Dependent Claim
41 words
A device according to claim 1 wherein said temperature-sensitive element is in the form of a bimetallic arm, one end of which is fixed and the opposite end of whIch is bowable during temperature changes and carries the temperature electrical contact.
Claim 5
Dependent Claim
41 words
A device according to claim 1 wherein said temperature-sensitive element is in the form of a bimetallic arm the two ends of which are fixed, and the middle portion of which is bowable during temperature changes and carries the temperature-electrical contact.
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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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |