US3201827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube-stretching mandrel
Assignee: Ericsson Inc
•
Filing: 1963-04-08
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Granted: 1965-08-24
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Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Maurice V Reynolds
- 👤 Rosario J Perrone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:24
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/22; B29C55/24; B29C61/00; B29C61/06; B29C61/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A MANDREL FOR RADIALLY STRETCHING SECTIONS OF TUBING COMPRISING: (A) A SOLID TAPERED BLOCK HAVING A CONICAL SURFACE OF REVOLUTION, (B) A PLURALITY OF BALL-RECEIVING BORES (A) PROJECTING INTO SAID BLOCK, (B) SAID BORES BEING SUBSTANTIALLY UNIFORMLY DISTRIBUTED OVER SUBSTANTIALLY THE ENTIRE SURFACE OF SAID BLOCK, (C) A LIKE PLURALITY OF BALLS EACH ROTATABLY INSERTED IN ONE OF SAID BORES AND PROJECTING OUT OF SAID BLOCK, (D) MEANS PARTIALLY OBSTRUCTING SAID BORES THEREBY RETAINING SAID BALLS, AND (E) PULLING MEANS FASTENED TO SAID MANDREL AND EXTENDING COAXIALLY THEREFROM WHEREBY SAID MANDREL CAN BE PULLED INTO SAID TUBING.
Claim 2
Dependent Claim
97 words
A MANDREL FOR RADIALLY STRETCHING SECTIONS OF TUBING COMPRISING: (A) A SOLID TAPERED BLOCK HAVING A CONICAL SURFACE OF REVOLUTION, (B) A PLURALITY OF BALL-RECEIVING BORES (A) PROJECTING INTO SAID BLOCK, (B) SAID BORES BEING SUBSTANTIALLY UNIFORMLY DISTRIBUTED OVER SUBSTANTIALLY THE ENTIRE SURFACE OF SAID BLOCK, (C) A LIKE PLURALITY OF BALLS EACH ROTATABLY INSERTED IN ONE OF SAID BORES AND PROJECTING OUT OF SAID BLOCK, (D) MEANS PARTIALLY OBSTRUCTING SAID BORES THEREBY RETAINING SAID BALLS, AND (E) PULLING MEANS FASTENED TO SAID MANDREL AND EXTENDING COAXIALLY THEREFROM WHEREBY SAID MANDREL CAN BE PULLED INTO SAID TUBING.
References Cited (Backward Citations)
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Cited
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US1930825A
Cited
US2693618A
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |