Patent US3667788A successfully refreshed from Google Patents.
US3667788A
Expired / Lapsed
US
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Cam lock device for telescoping tubing
Assignee: H AND G IND Inc
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Filing: 1970-07-07
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Granted: 1972-06-06
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Expires: 1990-07-07
Abstract
Abstract A TWO-PIECE CAM LOCK DEVICE FOR TELESCOPING TUBING IN WHICH A FIRST PIECE IS FIXED TO THE TUBING OF SMALLER DIAMETER AND THE SECOND PIECE IS ROTATABLE ON THE FIRST PIECE BETWEEN ECCENTRIC AND CONCENTRIC POSITIONS SO AS TO BE SLIDEABLE WITHIN THE TUBING OF LARGER DIAMETER WHEN THE CAM LOCK DEVICE IS CONCENTRICALLY POSITIONED AND TO FRICTIONALLY PREVENT RELATIVE AXIAL MOVEMENT BETWEEN THE TWO LENGTHS OF TUBING WHEN THE TWO PIECES OF THE CAM LOCK DEVICE ARE IN ECCENTRIC RELATIONSHIP. RELATIVE ROTATION OF THE TUBING IS EFFECTIVE TO LOCK AND UNLOCK THE CAM LOCK DEVICE BY ROTATING THE TWO PIECES BETWEEN ECCENTRIC AND CONCENTRIC POSITIONS.
Inventors
- 👤 William S Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:21
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/14; F16B7/1427; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |