Patent US3260097A successfully refreshed from Google Patents.
US3260097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for expanding tubular members
Assignee: Harvey Aluminum Inc
•
Filing: 1963-04-08
•
Granted: 1966-07-12
•
Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Hilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:50
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/08; B21D39/20; B21C; B21C37/00; B21C37/06; B21C37/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
APPARATUS FOR EXPANDING TUBULAR MEMBERS ABOUT A CENTRAL AXIS AND COMPRISING PAIRS OF COMPLEMENTARY LONGITUDINALLY DISPOSED WEDGE-SHAPED CYLINDRICAL SECTIONS, SAID SECTIONS HAVING CIRCUMFERENTIALLY AND SUBSTANTIALLY RADIALLY DISPOSED ENGAGED EDGES FOR LONGITUDINAL SLIDING MOVEMENT RELATIVE TO EACH OTHER, MEANS AT THE ENGAGED EDGES AND JOINING THE SECTIONS TOGETHER CIRCUMFERENTIALLY AND AGAINST SEPARATION, AND MEANS TO MOVE THE TWO SECTIONS OF EACH PAIR OF SECTIONS LONGITUDINALLY RELATIVE TO EACH OTHER TO VARY THE CIRCUMFERENCE OF SAID COMBINED SECTIONS BY SHIFTING THE SAID SECTIONS RADIALLY.
Claim 2
Dependent Claim
82 words
APPARATUS FOR EXPANDING TUBULAR MEMBERS ABOUT A CENTRAL AXIS AND COMPRISING PAIRS OF COMPLEMENTARY LONGITUDINALLY DISPOSED WEDGE-SHAPED CYLINDRICAL SECTIONS, SAID SECTIONS HAVING CIRCUMFERENTIALLY AND SUBSTANTIALLY RADIALLY DISPOSED ENGAGED EDGES FOR LONGITUDINAL SLIDING MOVEMENT RELATIVE TO EACH OTHER, MEANS AT THE ENGAGED EDGES AND JOINING THE SECTIONS TOGETHER CIRCUMFERENTIALLY AND AGAINST SEPARATION, AND MEANS TO MOVE THE TWO SECTIONS OF EACH PAIR OF SECTIONS LONGITUDINALLY RELATIVE TO EACH OTHER TO VARY THE CIRCUMFERENCE OF SAID COMBINED SECTIONS BY SHIFTING THE SAID SECTIONS RADIALLY.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |