Patent US3333089A successfully refreshed from Google Patents.
US3333089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Through-zero comparator
Assignee: Coleman Engineering Co Inc
•
Filing: 1963-09-30
•
Granted: 1967-07-25
•
Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 William H Saylor
- 👤 Marvin R Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/27; G05B19/29; G05B19/291; G05B2219/00; G05B2219/30; G05B2219/41; G05B2219/41247; G05B2219/42; G05B2219/42212
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A THROUGH-ZERO COMPARATOR INCLUDING IN COMBINATION A ROTATABLE SHAFT, MEANS FOR PROVIDING A DIGITAL REPRESENTATION OF THE ACTUAL POSITION OF THE SHAFT, MEANS FOR PROVIDING A DIGITAL REPRESENTATION OF A DESIRED POSITION OF THE SHAFT, MEANS RESPONSIVE TO SAID REPRESENTATIONS FOR PROVIDING A DIFFERENCE SIGNAL MEANS FOR SELECTIVELY SUDDENLY CHANGING THE DIFFERENCE SIGNAL BY AN AMOUNT CORRESPONDING TO A REPRESENTATION OF ONE REVOLUTION OF THE SHAFT AND MEANS RESPONSIVE TO SAID CHANGED DIFFERENCE SIGNAL FOR DRIVING SAID SHAFT.
Claim 2
Dependent Claim
78 words
A THROUGH-ZERO COMPARATOR INCLUDING IN COMBINATION A ROTATABLE SHAFT, MEANS FOR PROVIDING A DIGITAL REPRESENTATION OF THE ACTUAL POSITION OF THE SHAFT, MEANS FOR PROVIDING A DIGITAL REPRESENTATION OF A DESIRED POSITION OF THE SHAFT, MEANS RESPONSIVE TO SAID REPRESENTATIONS FOR PROVIDING A DIFFERENCE SIGNAL MEANS FOR SELECTIVELY SUDDENLY CHANGING THE DIFFERENCE SIGNAL BY AN AMOUNT CORRESPONDING TO A REPRESENTATION OF ONE REVOLUTION OF THE SHAFT AND MEANS RESPONSIVE TO SAID CHANGED DIFFERENCE SIGNAL FOR DRIVING SAID SHAFT.
References Cited (Backward Citations)
US3242477A
Cited
US3182240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |