US3187582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent instrument case closure
Assignee: Robertshaw Controls Co
•
Filing: 1961-11-16
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Granted: 1965-06-08
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Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Charles H Perkins
- 👤 Edward N Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:06
CPC Classifications
G; G01; G01D; G01D11/00; G01D11/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
IN AN INSTRUMENT HOUSING, THE COMBINATION COMPRISING A CASE, MEANS DEFINING AN OPENING IN SAID CASE, A SEALING RING HAVING INNER AND OUTER FLEXIBLE LIPS ON OPPOSITE SIDES OF A RECESSED UNDERSURFACE, SAID SEALING RING HAVING A GROOVE ADJACENT SAID INNER FLEXIBLE LIP, A TRANSPARENT ELEMENT ADAPTED TO BE FORCED AGAINST SAID INNER FLEXIBLE LIP AND FLEXING THE SAME WHEREBY THE TRANSPARENT ELEMENT IS SEALINGLY MOUNTED IN SAID GROOVE, AND INTERENGAGING SURFACES BETWEEN SAID MEANS AND SAID OUTER FLEXIBLE LIP FORMING A SEALED CLOSURE BETWEEN SAID CASE AND SAID RING.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |