US3875799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for sensing the temperature of a moving web
Assignee: Wira and Mather and Platt Ltd
•
Filing: 1972-08-21
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Granted: 1975-04-08
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Expires: 1992-08-21
Abstract
Abstract A temperature sensitive device monitors the temperature of a moving web, such as a cloth sheet, by utilizing a thin metallic leaf whose face rides upon the web''s surface. The leaf is mounted upon a support from which the leaf is thermally isolated and a thermocouple or thermistor is in thermal contact with the rear of the leaf. Where the device is used to determine the moisture content of the web, a second temperature sensitive element is employed to sense the web bulb temperature of the surrounding atmosphere whilst the other temperature sensitive element senses the web''s temperature. The two temperatures thus obtained enable the moisture content of the web to be ascertained.
Inventors
- 👤 Ernest Hoyland Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:27
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/04; G01K13/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
58 words
In apparatus for sensing the temperature of a moving web, the apparatus being of the type having A. a support frame, B. a web temperature sensing element mounted on the support frame for sliding contact with the moving web, and C. means associated with the web temperature sensing element for providing electrical signals indicative of the web''s temperature,
Claim 2
Dependent Claim
58 words
In apparatus for sensing the temperature of a moving web, the apparatus being of the type having A. a support frame, B. a web temperature sensing element mounted on the support frame for sliding contact with the moving web, and C. means associated with the web temperature sensing element for providing electrical signals indicative of the web''s temperature,
Claim 3
Dependent Claim
47 words
The improved apparatus according to claim 1, the improvement further including 3. a heat shield for shielding the metallic leaf, the heat shield being a polished metal plate carried by the support frame in a plane parallel to and spaced from the plane of the metal leaf.
References Cited (Backward Citations)
US1746937A
Cited
US3178112A
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US3279956A
Cited
US3427882A
Cited
US3357249A
Cited
US3715923A
Cited
US3690176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |