Patent US3810139A successfully refreshed from Google Patents.
US3810139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature responsive signaling device
Assignee: Individual
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Filing: 1972-11-29
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Granted: 1974-05-07
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Expires: 1992-11-29
Abstract
Abstract A temperature responsive signaling device comprising a supporting structure adapted to project above a supporting surface, an electrical power source carried by the supporting structure, a light mounted on the supporting structure, a circuit for coupling the power source to the light, a temperature responsive device for opening and closing the circuit to the light in response to predetermined temperatures, and a mechanism for causing the light to flash when the circuit to the light is closed.
Inventors
- 👤 A Fergusson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:07
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/02; G08; G08B; G08B19/00; G08B19/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
A temperature responsive signaling device for use in warming plants comprising: a supporting structure adapted to project above a supporting surface; an electrical power source carried by the supporting structure; a light mounted on said supporting structure above said supporting surface; circuit means providing a circuit for coupling said power source to said light whereby said power source can energize said light; temperature responsive means above the supporting surface responsive to the temperature of the air adjacent said device being no greater than a preselected temperature for closing said circuit and responsive to the temperature of the air being a predetermined amount above said preselected temperature for opening said circuit; means for causing said light to flash when said circuit is closed; manually operable means for adjusting said preselected temperature whereby the preselected temperature can be selected to suit the particular plant to be warmed; and variable length means for changing the height of said temperature responsive means above the supporting surface whereby the temperature responsive means can be located at the desired elevation for the plant to be warmed.
Claim 2
Dependent Claim
180 words
A temperature responsive signaling device for use in warming plants comprising: a supporting structure adapted to project above a supporting surface; an electrical power source carried by the supporting structure; a light mounted on said supporting structure above said supporting surface; circuit means providing a circuit for coupling said power source to said light whereby said power source can energize said light; temperature responsive means above the supporting surface responsive to the temperature of the air adjacent said device being no greater than a preselected temperature for closing said circuit and responsive to the temperature of the air being a predetermined amount above said preselected temperature for opening said circuit; means for causing said light to flash when said circuit is closed; manually operable means for adjusting said preselected temperature whereby the preselected temperature can be selected to suit the particular plant to be warmed; and variable length means for changing the height of said temperature responsive means above the supporting surface whereby the temperature responsive means can be located at the desired elevation for the plant to be warmed.
Claim 3
Dependent Claim
51 words
A temperature responsive signaling device as defined in claim 1 wherein said supporting structure includes a housing, a stake adapted to be driven into the ground, and said variable length means includes an elongated extension threadedly connectible to said housing to elongate the signaling device and elevate said temperature responsive means.
Claim 4
Dependent Claim
29 words
A temperature responsive signaling device as defined in claim 1 wherein said temperature responsive means includes a switch and a temperature responsive gas operated sensor for controlling said switch.
Claim 5
Dependent Claim
136 words
A temperature responsive signaling device as defined in claim 1 wherein said supporting structure includes a housing and a stake adapted to be driven into the ground, said variable length means includes an elongated extension threadedly connectible to the housing and to the stake, said temperature responsive means draws no current and includes a switch and a temperature responsive gas operated sensor for controlling said switch, said sensor having a differential of no greater than about 2* F. and being mounted on the exterior of said housing, said signaling device also including a guard for protecting said sensor and a test switch in parallel with said first mentioned switch for testing said light, said power source includes a battery within said housing and at least a substantial portion of said circuit means is in said housing.
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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |