Patent US3109477A successfully refreshed from Google Patents.
US3109477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel for pipe bending machines
Assignee: CROSE UNITED CORP
•
Filing: 1962-09-25
•
Granted: 1963-11-05
•
Expires: 1982-09-25
Abstract
No abstract record available.
Inventors
- 👤 Trent W Avera
- 👤 Joseph A Cuuningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:36
CPC Classifications
B; B21; B21D; B21D9/00; B21D9/01; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN ELONGATED, LONGITUDINALLY FLEXIBLE AND RESILIENT, TRANSVERSELY EXPANSIBLE MANDREL ADAPTED FOR INSERTION INTO A PIPE TO BE BENT FOR SUPPORTING THE PIPE AGAINST DISTORTION ADJACENT THE ZONE OF BENDING THEREOF, SAID MANDREL COMPRISING: A FIRST, ELONGATED, LONGITUDINALLY FLEXIBLE AND RESILIENT ASSEMBLY FOR SUPPORTINGLY ENGAGING A LONGITUDINAL AREA OF THE PIPE ADJACENT SAID ZONE DURING BENDING OF THE PIPE; A SECOND, ELONGATED ASSEMBLY DISPOSED IN SPACED, OPPOSED, GENERALLY ALIGNED, PARALLEL RELATIONSHIP TO SAID FIRST ASSEMBLY AND PROVIDED WITH ELONGATED SUPPORT STRUCTURE EXTENDING LONGITUDINALLY OF THE SECOND ASSEMBLY; ELONGATED, RESILIENTLY FLEXIBLE, PIPE-ENGAGING STRIP MEANS DISPOSED OUTWARDLY OF THE SUPPORT STRUCTURE IN GENERALLY PARALLEL, SPACED RELATIONSHIP THEREFROM; RESILIENT SPACER MEANS DISPOSED BETWEEN SAID STRIP MEANS
Claim 2
Dependent Claim
112 words
AN ELONGATED, LONGITUDINALLY FLEXIBLE AND RESILIENT, TRANSVERSELY EXPANSIBLE MANDREL ADAPTED FOR INSERTION INTO A PIPE TO BE BENT FOR SUPPORTING THE PIPE AGAINST DISTORTION ADJACENT THE ZONE OF BENDING THEREOF, SAID MANDREL COMPRISING: A FIRST, ELONGATED, LONGITUDINALLY FLEXIBLE AND RESILIENT ASSEMBLY FOR SUPPORTINGLY ENGAGING A LONGITUDINAL AREA OF THE PIPE ADJACENT SAID ZONE DURING BENDING OF THE PIPE; A SECOND, ELONGATED ASSEMBLY DISPOSED IN SPACED, OPPOSED, GENERALLY ALIGNED, PARALLEL RELATIONSHIP TO SAID FIRST ASSEMBLY AND PROVIDED WITH ELONGATED SUPPORT STRUCTURE EXTENDING LONGITUDINALLY OF THE SECOND ASSEMBLY; ELONGATED, RESILIENTLY FLEXIBLE, PIPE-ENGAGING STRIP MEANS DISPOSED OUTWARDLY OF THE SUPPORT STRUCTURE IN GENERALLY PARALLEL, SPACED RELATIONSHIP THEREFROM; RESILIENT SPACER MEANS DISPOSED BETWEEN SAID STRIP MEANS
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |