US3554640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive coupling system
Assignee: International Business Machines Corp
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Filing: 1968-11-25
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Granted: 1971-01-12
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Expires: 1988-11-25
Abstract
Abstract A DRIVE COUPLING SYSTEM IN A XEROGRAPHIC MACHINE FOR SYNCHRONIZING THE RECIPROCATION OF A COPY CARRIAGE WITH A ROTATABLE XEROGRAPHIC DRUM. A CLUTCH RELEASABLY COUPLES A DRIVEN MEMBER TO A ROTATABLE DRIVE IN SYNCHRONISM WITH A SPECIFIC POINT ON THE ROTATABLE DRIVE TO PROVIDE LIMITED MOVEMENT OF THE DRIVEN MEMBER FROM A FIRST TO A SECOND POSITION IN ONE DIRECTION. AN ADDITIONAL DRIVE CONSISTING OF A SPRING MOTOR DRIVES THE DRIVEN MEMBER IN THE OPPOSITE DIRECTION TO THE FIRST POSITION. A CAM MEMBER CONTROLS THE ACCELERATION AND DECELERATION OF THE DRIVEN MEMBER FROM AND TO THE FIRST POSITION.
Inventors
- 👤 Thomas A Hoskins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:25
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221; G03B27/6235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |