Patent US3387761A successfully refreshed from Google Patents.
US3387761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal alignment clamp
Assignee: KENNETH L PICKARD
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Filing: 1966-02-10
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Granted: 1968-06-11
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Expires: 1986-02-10
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Pickard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:04
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0531; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53983
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
AN INTERNAL ALIGNMENT CLAMP ADAPTED TO BE UTILIZED IN "PRESSURE WELDING" A PAIR OF GENERALLY END ALIGNED AND ADJACENT PIPE SECTIONS TOGETHER, SAID CLAMP COMPRISING AN ELONGATED ASSEMBLY DEFINING A LONGITUDINAL CENTER AXIS AND ADAPTED TO BE DISPOSED WITHIN AND OVERLAP THE ADJACENT ENDS OF SAID SECTIONS, OPPOSITE END PORTIONS OF SAID ASSEMBLY INCLUDING GRIPPING MEANS EXPANDABLE GENERALLY RADIALLY OUTWARDLY OF SAID CENTER AXIS AND ADAPTED TO FRICTIONALLY GRIP THE INTERNAL SURFACES OF SAID SECTIONS AND AXIALLY ALIGN THE SAID ADJACENT ENDS SAID ASSEMBLY ALSO INCLUDING ROLLER MEANS, SPACED INTERMEDIATE SAID GRIPPING MEANS JOURNALLED FOR ROTATION ABOUT AN AXIS GENERALLY PARALLELING SAID CENTER AXIS AND MOUNTED FOR SWINGING MOVEMENT CONCENTRICALLY ABOUT SAID CENTER AXIS SO AS TO BE ADAPTED TO ROLLINGLY ENGAGE THE INNER SURFACES OF SAID PIPE SECTIONS IN SAID ADJACENT ENDS THEREOF AFTER THE LATTER HAVE BEEN SHIFTED INTO END ABUTTED RELATION.
Claim 2
Dependent Claim
144 words
AN INTERNAL ALIGNMENT CLAMP ADAPTED TO BE UTILIZED IN "PRESSURE WELDING" A PAIR OF GENERALLY END ALIGNED AND ADJACENT PIPE SECTIONS TOGETHER, SAID CLAMP COMPRISING AN ELONGATED ASSEMBLY DEFINING A LONGITUDINAL CENTER AXIS AND ADAPTED TO BE DISPOSED WITHIN AND OVERLAP THE ADJACENT ENDS OF SAID SECTIONS, OPPOSITE END PORTIONS OF SAID ASSEMBLY INCLUDING GRIPPING MEANS EXPANDABLE GENERALLY RADIALLY OUTWARDLY OF SAID CENTER AXIS AND ADAPTED TO FRICTIONALLY GRIP THE INTERNAL SURFACES OF SAID SECTIONS AND AXIALLY ALIGN THE SAID ADJACENT ENDS SAID ASSEMBLY ALSO INCLUDING ROLLER MEANS, SPACED INTERMEDIATE SAID GRIPPING MEANS JOURNALLED FOR ROTATION ABOUT AN AXIS GENERALLY PARALLELING SAID CENTER AXIS AND MOUNTED FOR SWINGING MOVEMENT CONCENTRICALLY ABOUT SAID CENTER AXIS SO AS TO BE ADAPTED TO ROLLINGLY ENGAGE THE INNER SURFACES OF SAID PIPE SECTIONS IN SAID ADJACENT ENDS THEREOF AFTER THE LATTER HAVE BEEN SHIFTED INTO END ABUTTED RELATION.
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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |