Patent US3663917A successfully refreshed from Google Patents.
US3663917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable temperature-sensing device
Assignee: 3M Co
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Filing: 1970-01-07
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Granted: 1972-05-16
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Expires: 1990-01-07
Abstract
Abstract A temperature-sensing device comprising generally an elongated temperature-sensing probe having a thermistor on one end, means on the opposite end of the probe for connecting it with the temperature metering device, an impervious disposable sheath comprising a low thermal-conducting, elongated sleeve having a high thermal-conducting metal tip sealing one end thereof adapted to intimately receive the thermistor-containing probe, and means for removably holding said sheath on said probe. When the device is to be used, the sheath is placed over the probe and held thereon, the thermistor-containing end of said probe being urged into intimate contact with the metal tip, allowing rapid thermal transfer between the temperature source and the thermistor so that temperature may be read in degrees on the metering device. The disposable sheath prevents cross-contamination among patients in clinical use.
Inventors
- 👤 Parviz Mahmoodi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:00
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A temperature-sensing device for the measurement of temperature and haVing an extremely fast response, comprising in combination: an elongated temperature-sensing probe having a termistor on one end; means on the opposite end of said probe for connecting it with a temperature metering device; a rigid, disposable, impervious shEath comprising a low thermalconducting elongated sleeve having a high thermal conducting metal tip sealing one end thereof and adapted to intimately receive said probe, wherein there is about a one-sixteenth to one-fourth inch contacting surface between said metal tip and said probe along the length thereof; and means for removably holding said sheath on said probe; whereby when said sheath is inserted on said probe and held thereon, the thermistor-carrying end of said probe is urged into intimate contact with said metal tip allowing thermal transfer therebetween.
Claim 2
Dependent Claim
135 words
A temperature-sensing device for the measurement of temperature and haVing an extremely fast response, comprising in combination: an elongated temperature-sensing probe having a termistor on one end; means on the opposite end of said probe for connecting it with a temperature metering device; a rigid, disposable, impervious shEath comprising a low thermalconducting elongated sleeve having a high thermal conducting metal tip sealing one end thereof and adapted to intimately receive said probe, wherein there is about a one-sixteenth to one-fourth inch contacting surface between said metal tip and said probe along the length thereof; and means for removably holding said sheath on said probe; whereby when said sheath is inserted on said probe and held thereon, the thermistor-carrying end of said probe is urged into intimate contact with said metal tip allowing thermal transfer therebetween.
Claim 3
Dependent Claim
18 words
The temperature-sensing device of claim 1 wherein said sleeve is rigid plastic and said metal tip is copper.
Claim 4
Dependent Claim
21 words
The temperature-sensing device of claim 1 wherein said metal tip has a wall thickness of from about 0.002 to 0.015 inch.
Claim 5
Dependent Claim
87 words
A disposable sheath for use on a temperature-sensing probe, said probe having a thermistor on one end, comprising a low thermal conducting, elongated, rigid sleeve and a high thermal conducting metal tip sealing one end of said sleeve and adapted to intimately receive the thermistor containing end of said probe, such that there is about a one-sixteenth to one-fourth inch contacting surface between said metal tip and said probe along the length thereof said metal tip has a wall thickness of from about 0.002 to 0.015 inch.
Claim 6
Dependent Claim
87 words
A disposable sheath for use on a temperature-sensing probe, said probe having a thermistor on one end, comprising a low thermal conducting, elongated, rigid sleeve and a high thermal conducting metal tip sealing one end of said sleeve and adapted to intimately receive the thermistor containing end of said probe, such that there is about a one-sixteenth to one-fourth inch contacting surface between said metal tip and said probe along the length thereof said metal tip has a wall thickness of from about 0.002 to 0.015 inch.
References Cited (Backward Citations)
US3241370A
Cited
US3254533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |