US3289041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic time delay mechanism
Assignee: Weyerhaeuser Co
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Filing: 1963-12-11
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Granted: 1966-11-29
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Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 Charles A Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:13
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/288; B; B23; B23Q; B23Q15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A SPEED-COMPENSATING CONTROL APPARATUS COMPRISING IN COMBINATION CAPACITOR MEANS FIRST MEANS FOR CHARGING SAID CAPACITOR MEANS TO A VOLTAGE PROPORTIONAL TO THE SPEED OF THE MACHINE ELEMENT BEING COMPENSATED FOR MEANS FOR ENERGIZING A CONTROL EXECUTION RELAY TO ACTUATE THE APPARATUS BEING CONTROLLED SAID ENERGIZING MEANS BEING INOPERATIVE BELOW A STANDARD VOLTAGE SECOND MEANS FOR CHARGING SAID CAPACITOR TO SAID STANDARD VOLTAGE COMMAND CONTROL MEANS FOR RECEIVING A COMMAND CONTROL SIGNAL AND, UPON RECEIPT OF SAID SIGNAL, FOR DISCONNECTING SAID FIRST CHARGING MEANS FROM SAID CA-
Claim 2
Dependent Claim
86 words
A SPEED-COMPENSATING CONTROL APPARATUS COMPRISING IN COMBINATION CAPACITOR MEANS FIRST MEANS FOR CHARGING SAID CAPACITOR MEANS TO A VOLTAGE PROPORTIONAL TO THE SPEED OF THE MACHINE ELEMENT BEING COMPENSATED FOR MEANS FOR ENERGIZING A CONTROL EXECUTION RELAY TO ACTUATE THE APPARATUS BEING CONTROLLED SAID ENERGIZING MEANS BEING INOPERATIVE BELOW A STANDARD VOLTAGE SECOND MEANS FOR CHARGING SAID CAPACITOR TO SAID STANDARD VOLTAGE COMMAND CONTROL MEANS FOR RECEIVING A COMMAND CONTROL SIGNAL AND, UPON RECEIPT OF SAID SIGNAL, FOR DISCONNECTING SAID FIRST CHARGING MEANS FROM SAID CA-
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |