US3128654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand-operated pipe bending machine
Assignee: Greenlee Brothers and Co
•
Filing: 1962-04-23
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Granted: 1964-04-14
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Expires: 1982-04-23
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Herrstrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:23
CPC Classifications
B; B21; B21D; B21D7/00; B21D7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A HAND-OPERATED BENDING MACHINE HAVING, IN COMBINATION, A LOWER DIE BLOCK AND AN UPPER DIE BLOCK PROVIDED WITH OPPOSED GROOVES OPERABLE TO FORM AN OFFSET BEND IN A PIPE, GUIDE PINS ANCHORED IN ONE BLOCK AND EXTENDING SLIDABLY INTO BORES IN THE OTHER BLOCK, A PAIR OF MEMBERS RIGIDLY SECURED AT THEIR LOWER ENDS TO THE LOWER BLOCK AND EXTENDING UPWARDLY ALONGSIDE OF AND TO A POSITION ABOVE THE UPPER BLOCK, A PIVOT PIN EXTENDING TRANSVERSELY ABOVE THE UPPER BLOCK AND THROUGH OPENINGS IN THE MEMBERS, AN OPERATING CAM ROTATABLY SUPPORTED ON SAID MEMBERS AND OPERABLE TO MOVE THE DIES TOWARD EACH OTHER, AND AN OPERATING HANDLE EXTENDING FROM SAID CAM,
Claim 2
Dependent Claim
111 words
A HAND-OPERATED BENDING MACHINE HAVING, IN COMBINATION, A LOWER DIE BLOCK AND AN UPPER DIE BLOCK PROVIDED WITH OPPOSED GROOVES OPERABLE TO FORM AN OFFSET BEND IN A PIPE, GUIDE PINS ANCHORED IN ONE BLOCK AND EXTENDING SLIDABLY INTO BORES IN THE OTHER BLOCK, A PAIR OF MEMBERS RIGIDLY SECURED AT THEIR LOWER ENDS TO THE LOWER BLOCK AND EXTENDING UPWARDLY ALONGSIDE OF AND TO A POSITION ABOVE THE UPPER BLOCK, A PIVOT PIN EXTENDING TRANSVERSELY ABOVE THE UPPER BLOCK AND THROUGH OPENINGS IN THE MEMBERS, AN OPERATING CAM ROTATABLY SUPPORTED ON SAID MEMBERS AND OPERABLE TO MOVE THE DIES TOWARD EACH OTHER, AND AN OPERATING HANDLE EXTENDING FROM SAID CAM,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |