Patent US3629772A successfully refreshed from Google Patents.
US3629772A
Expired / Lapsed
US
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Novel thermistor and method of making
Assignee: SOLAR LAB Inc
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Filing: 1969-02-19
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Granted: 1971-12-21
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Expires: 1989-02-19
Abstract
Abstract This patent describes a thermistor comprising a plastic body member of a generally cylindrical configuration having an opening passing longitudinally therethrough, a plurality of threads on the exterior of said body in proximity to one end thereof, a thin metal film within the grooves but not on the lands of said threads and metal disposed on the exterior and interior of said body to establish a continuous metal path from the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads, said metal path being composed of an electrically conductive metal having a hightemperature coefficient of resistivity.
Inventors
- 👤 Leroy E Beightol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:16
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/49099
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A thermistor comprising a plastic body member of a generally cylindrical configuration having an opening passing longitudinally therethrough, a plurality of threads on the exterior of said body in proximity to one end thereof, a thin metal film within the grooves but not on the lands of said threads and metal disposed on the exterior and interior of said body to establish a continuous metal path from the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads, said metal path being composed of an electrically conductive metal having a high temperature coefficient of resistivity.
Claim 2
Dependent Claim
105 words
A thermistor comprising a plastic body member of a generally cylindrical configuration having an opening passing longitudinally therethrough, a plurality of threads on the exterior of said body in proximity to one end thereof, a thin metal film within the grooves but not on the lands of said threads and metal disposed on the exterior and interior of said body to establish a continuous metal path from the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads, said metal path being composed of an electrically conductive metal having a high temperature coefficient of resistivity.
Claim 3
Dependent Claim
114 words
A thermistor comprising a plastic body member of a generally cylindrical configuration having an opening passing longitudinally therethrough, a plurality of threads on the exterior of said body in proximity to one end thereof, a thin metal film within the grooves but noT on the lands of said threads and metal disposed on the exterior and interior os said body to establish a continuous metal path from the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads, said metal path being composed of an electrically conductive metal having a high temperature coefficient of resistivity within the temperature range encountered in the human body.
Claim 4
Dependent Claim
114 words
A thermistor comprising a plastic body member of a generally cylindrical configuration having an opening passing longitudinally therethrough, a plurality of threads on the exterior of said body in proximity to one end thereof, a thin metal film within the grooves but noT on the lands of said threads and metal disposed on the exterior and interior os said body to establish a continuous metal path from the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads, said metal path being composed of an electrically conductive metal having a high temperature coefficient of resistivity within the temperature range encountered in the human body.
Claim 5
Dependent Claim
114 words
A thermistor comprising a plastic body member of generally cylindrical configuration having a cylindrical opening passing longitudinally therethrough, a plurality of threads on the exterior of said body in proximity to one end thereof, a thin metal film within the grooves but not on the lands of said threads and metal disposed on the exterior and interior of said body to establish a continuous metal path form the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads, said metal path being composed of an electrically conductive metal having a high temperature coefficient of restitivity within the temperature range encountered in the human body.
Claim 6
Dependent Claim
114 words
A thermistor comprising a plastic body member of generally cylindrical configuration having a cylindrical opening passing longitudinally therethrough, a plurality of threads on the exterior of said body in proximity to one end thereof, a thin metal film within the grooves but not on the lands of said threads and metal disposed on the exterior and interior of said body to establish a continuous metal path form the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads, said metal path being composed of an electrically conductive metal having a high temperature coefficient of restitivity within the temperature range encountered in the human body.
Claim 7
Independent Claim
110 words
The method of making a thermistor which comprises molding a plastic body member having a generally cylindrical configuration having an opening passing longitudinally there through and a plurality of threads on the exterior of said body in proximity to one end thereof, coating the inside and outside surface of said body with a thin electrically conductive metal film having a high temperature coefficient of resistivity, and removing said film from the lands of said threads but not the grooves of said threads to establish a continuous metal path from the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads.
Claim 8
Independent Claim
110 words
The method of making a thermistor which comprises molding a plastic body member having a generally cylindrical configuration having an opening passing longitudinally there through and a plurality of threads on the exterior of said body in proximity to one end thereof, coating the inside and outside surface of said body with a thin electrically conductive metal film having a high temperature coefficient of resistivity, and removing said film from the lands of said threads but not the grooves of said threads to establish a continuous metal path from the exterior of the end opposite said end having threads to the interior of said end opposite said end having threads.
Claim 9
Dependent Claim
16 words
The method of claim 4 wherein the thermistor is subsequently coated with a thin protective coating.
References Cited (Backward Citations)
US2349614A
Cited
US3414864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |