US3145327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid magnetic damper
Assignee: Robertshaw Controls Co
•
Filing: 1962-04-06
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Granted: 1964-08-18
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Expires: 1982-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jr George Leo Thayer
- 👤 Dorothy V Hewitt
- 👤 Patricia A Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:08
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/088; H01F7/16; H01F7/1607
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IN A SOLENOID INCLUDING AN ELECTRICAL COIL AND AN ARMATURE MOUNTED WITHIN SAID COIL MAGNETICALLY DRIVEN BY ENERGIZATION OF SAID COIL, THE COMBINATION COMPRISING MEANS MAGNETICALLY DRAWN INTO ENGAGEMENT WITH SAID ARMATURE AND DAMPING VIBRATION THEREIN DURING ENERGIZATION OF SAID COIL.
Claim 2
Dependent Claim
41 words
IN A SOLENOID INCLUDING AN ELECTRICAL COIL AND AN ARMATURE MOUNTED WITHIN SAID COIL MAGNETICALLY DRIVEN BY ENERGIZATION OF SAID COIL, THE COMBINATION COMPRISING MEANS MAGNETICALLY DRAWN INTO ENGAGEMENT WITH SAID ARMATURE AND DAMPING VIBRATION THEREIN DURING ENERGIZATION OF SAID COIL.
References Cited (Backward Citations)
US2493386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |