US3187121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay actuator having a filter element
Assignee: Robertshaw Controls Co
•
Filing: 1961-10-16
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Granted: 1965-06-01
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Frank V Mingrone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:07
CPC Classifications
H; H01; H01H; H01H7/00; H01H7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A TIME DELAY ACTUATOR COMPRISING A SUPPORT MEANS HAVING AN OPENING, A RESILIENT HOLLOW CAPSULE HAVING A THREADED OPENING AT ONE END, SAID CAPSULE BEING MOUNTED ON SAID SUPPORT MEANS WITH SAID THREADED OPENING IN COAXIAL ALIGNMENT WITH THE OPENING IN SAID CAPSULE THEREBY FORMING A PATH OF FLUID FLOW TO AND FROM THE INTERIOR OF THE CAPSULE, A SCREW LOOSELY THREADED IN THE OPENING IN SAID CAPSULE AND HAVING A FLANGE PORTION SPACED FROM SAID SUPPORT MEANS ON THE SIDE OPPOSITE THAT OF THE CAPSULE, A POROUS COMPRESSIBLE FILTER MEANS DISPOSED BETWEEN SAID SUPPORT MEANS AND SAID FLANGE PORTION OF THE SCREW IN THE PATH OF FLOW TO AND FROM THE INTERIOR OF THE CAPSULE, SAID
Claim 2
Dependent Claim
117 words
A TIME DELAY ACTUATOR COMPRISING A SUPPORT MEANS HAVING AN OPENING, A RESILIENT HOLLOW CAPSULE HAVING A THREADED OPENING AT ONE END, SAID CAPSULE BEING MOUNTED ON SAID SUPPORT MEANS WITH SAID THREADED OPENING IN COAXIAL ALIGNMENT WITH THE OPENING IN SAID CAPSULE THEREBY FORMING A PATH OF FLUID FLOW TO AND FROM THE INTERIOR OF THE CAPSULE, A SCREW LOOSELY THREADED IN THE OPENING IN SAID CAPSULE AND HAVING A FLANGE PORTION SPACED FROM SAID SUPPORT MEANS ON THE SIDE OPPOSITE THAT OF THE CAPSULE, A POROUS COMPRESSIBLE FILTER MEANS DISPOSED BETWEEN SAID SUPPORT MEANS AND SAID FLANGE PORTION OF THE SCREW IN THE PATH OF FLOW TO AND FROM THE INTERIOR OF THE CAPSULE, SAID
References Cited (Backward Citations)
US2899523A
Cited
US942623A
Cited
US1942040A
Cited
US2689916A
Cited
US2881285A
Cited
US2976961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |