Patent US3701063A successfully refreshed from Google Patents.
US3701063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature responsive electric control device
Assignee: Hoover Co
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Filing: 1970-10-09
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Granted: 1972-10-24
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Expires: 1990-10-09
Abstract
Abstract A temperature responsive electric control device has electric contacts, a body of thermo-magnetic material, and a magnet movable between two positions in the first of which it is held by magnetic attraction with the body while this body is at a temperature below its Curie point, and in the second of which it operates by magnetic attraction to actuate the contacts.
Inventors
- 👤 Georges Jean Louis-Mar Clausse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:53
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0219; A; A47; A47J; A47J27/00; A47J27/21; A47J27/21008; A47J27/21058; A47J27/211; A47J31/00; A47J31/18; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/58
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A temperature responsive electric control device comprising electric contacts, said contacts having an open position and a closed position, a ferro-magnetic material associated with said electric contacts, a body of thermal-magnetic material, and a magnet movable between first and second spacially separated positions, said magnet in said first position being held by magnetic attraction with said body of thermal-magnetic material while said body of thermal-magnetic material is at a temperature below its Curie point, said magnet being biased to said second position when said body of thermal-magnetic material is at a temperature above its Curie point, said magnet actuating said electric contacts by magnetic attraction with said ferro-magnetic material when said magnet is in one of said magnet position.
Claim 2
Dependent Claim
119 words
A temperature responsive electric control device comprising electric contacts, said contacts having an open position and a closed position, a ferro-magnetic material associated with said electric contacts, a body of thermal-magnetic material, and a magnet movable between first and second spacially separated positions, said magnet in said first position being held by magnetic attraction with said body of thermal-magnetic material while said body of thermal-magnetic material is at a temperature below its Curie point, said magnet being biased to said second position when said body of thermal-magnetic material is at a temperature above its Curie point, said magnet actuating said electric contacts by magnetic attraction with said ferro-magnetic material when said magnet is in one of said magnet position.
Claim 3
Dependent Claim
25 words
A temperature responsive electric control device of claim 1 including seal means positioned between said ferro-magnetic material associated with said electric contacts and said magnet.
Claim 4
Dependent Claim
26 words
A temperature responsive electric control device of claim 1 wherein said electric contacts are in said closed position when said magnet is in said first position.
Claim 5
Dependent Claim
40 words
A temperature responsive electric control device of claim 1 wherein said second position of said magnet is spacially separated from said first position, and said electric contacts being in said open position when said magnet is in said second position.
Claim 6
Dependent Claim
51 words
A temperature responsive electric control device of claim 1 including an additional magnet positioned to be attracted by said first mentioned magnet when said first mentioned magnet is in said magnet second position and said additional magnet is arranged to magnetically attract said electric contacts by movement of said additional magnet.
Claim 7
Dependent Claim
87 words
A temperature responsive electric control device of claim 5 including a ferro-magnetic block associated with said electric contacts, wherein said additional magnet is movable between an attracted position and a released position, said additional magnet when in said attracted position being held by magnetic attraction with said first mentioned magnet and said additional magnet in said released position magnetically attracts said ferro-magnetic block, said additional magnet moving from said attracted position to said released position when said first mentioned magnet is moved to said magnet second position.
Claim 8
Dependent Claim
40 words
A temperature responsive electric control device of claim 6 including means for effectinG relative displacement between said first mentioned magnet and said additional magnet to inhibit actuation of said electric contacts regardless of the position of said first mentioned magnet.
Claim 9
Dependent Claim
36 words
A temperature responsive electric control device of claim 1 including means for effecting relative displacement between said magnet and said ferro-magnetic block to inhibit actuation of said electric contacts regardless of the position of said magnet.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |