Patent US3673867A successfully refreshed from Google Patents.
US3673867A
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Humidity responsive element
Assignee: Honeywell Inc
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Filing: 1970-10-15
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Granted: 1972-07-04
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Expires: 1990-10-15
Abstract
Abstract A humidity responsive element made of a strip of nylon secured to a strip of phosphor bronze. The bi-material element is heated treated after being formed into a spiral to improve the bond and stabilize its response to humidity changes.
Inventors
- 👤 William F Cashin
- 👤 James R Mourning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:00
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
27 words
A humidity responsive element according to claim 1 in which the thermoplastic material is heat bonded to the metal strip prior to being formed into a coil.
Claim 2
Dependent Claim
22 words
A humidity responsive element according to claim 1 in which the two strips forming said bi-material element are nylon and Phosphor Bronze.
Claim 3
Dependent Claim
18 words
A humidity responsive element according to claim 2 in which the two strips are nylon and Phosphor Bronze.
Claim 4
Dependent Claim
22 words
A humidity responsive element according to claim 1 in which the coil of bi-material element is in the shape of a spiral.
Claim 5
Dependent Claim
26 words
A humidity responsive element according to claim 1 in which the thermoplastic material is fused to the metal strip prior to being formed into a coil.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |