US3376933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe handling machine
Assignee: Individual
•
Filing: 1966-05-05
•
Granted: 1968-04-09
•
Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Burlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:53
CPC Classifications
E; E21; E21B; E21B19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A DEVICE FOR RAISING AND LOWERING AN ELONGATED CYLINDRICAL OBJECT COMPRISING A FRAME, A PAIR OF PNEUMATIC WHEELS JOURNALED IN COPLANAR RELATIONSHIP ON SAID FRAME, MEANS FOR FORCING SAID WHEELS TOGETHER IN THEIR COMMON PLANE THEREBY TO GRIP SAID OBJECT THEREBETWEEN, AND SELECTIVE POWER MEANS FOR ROTATING AT LEAST ONE OF SAID WHEELS, TO MOVE SAID OBJECT ALONG ITS AXIS.
Claim 2
Independent Claim
60 words
A DEVICE FOR RAISING AND LOWERING AN ELONGATED CYLINDRICAL OBJECT COMPRISING A FRAME, A PAIR OF PNEUMATIC WHEELS JOURNALED IN COPLANAR RELATIONSHIP ON SAID FRAME, MEANS FOR FORCING SAID WHEELS TOGETHER IN THEIR COMMON PLANE THEREBY TO GRIP SAID OBJECT THEREBETWEEN, AND SELECTIVE POWER MEANS FOR ROTATING AT LEAST ONE OF SAID WHEELS, TO MOVE SAID OBJECT ALONG ITS AXIS.
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |