US3892148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable power spinning tong
Assignee: Jackson Memorial Hospital
•
Filing: 1974-08-01
•
Granted: 1975-07-01
•
Expires: 1994-08-01
Abstract
Abstract A power spinning tong for rotating a well pipe has opposed pairs or rollers rotatable on lever arms which pivot about a common point on the frame. One roller of each pair is power driven. The lever arms are actuated to cause engagement of the rollers with the pipe by a wedge shiftable by a short stroke cylinder. Adjustors in each lever arm operate to adjust the tong to grip pipe of different diameters.
Inventors
- 👤 Mark H Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/002; E; E21; E21B; E21B19/00; E21B19/16; E21B19/168
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
134 words
A powered pipe spinning tong comprising: a frame structure, a pair of elongated levers, pivot means pivotally mounting said levers on said frame structure with said levers extending in opposed laterally spaced relation, said levers having opposed actuating arms at one side of said pivot means and opposed pipe gripping arms at the other side of said pivot means, pipe gripping roller means carried by said gripping arms for actuation into gripping engagement with a pipe upon spreading of said actuating arms, actuator means for spreading said actuating arms, drive means for rotation of said pipe gripping roller means and a pipe gripped thereby, and adjustor means for adjusting said actuating arms relative to said actuator means to enable said pipe gripping roller means to grip and rotate pipe of a range of sizes.
Claim 2
Dependent Claim
134 words
A powered pipe spinning tong comprising: a frame structure, a pair of elongated levers, pivot means pivotally mounting said levers on said frame structure with said levers extending in opposed laterally spaced relation, said levers having opposed actuating arms at one side of said pivot means and opposed pipe gripping arms at the other side of said pivot means, pipe gripping roller means carried by said gripping arms for actuation into gripping engagement with a pipe upon spreading of said actuating arms, actuator means for spreading said actuating arms, drive means for rotation of said pipe gripping roller means and a pipe gripped thereby, and adjustor means for adjusting said actuating arms relative to said actuator means to enable said pipe gripping roller means to grip and rotate pipe of a range of sizes.
Claim 3
Dependent Claim
42 words
A powered pipe spinning tong as defined in claim 1, wherein said pipe gripping roller means comprisses a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm.
Claim 4
Dependent Claim
53 words
A powered pipe spinning tong as defined in claim 1, wherein said pipe gripping roller means comprises a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm, said drive means driving one of the rollers of each pair.
Claim 5
Dependent Claim
63 words
A powered pipe spinning tong as defined in claim 1, wherein said pipe gripping roller means comprises a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm, said pivot means comprising a supporting portion of said frame, and common means pivotally mounting said levers on said supporting portion.
Claim 6
Dependent Claim
76 words
A powered pipe spinning tong as defined in claim 1, wherein said pipe gripping roller means comprises a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm, said pivot means comprising a supporting portion of said frame, a pivot shaft extending through said supporting portions, and interfitting portions on said levers pivotally connected to said supporting portion and said pivot shaft.
Claim 7
Dependent Claim
28 words
A powered pipe spinning tong as defined in claim 1, wherein said adjustor means comprises means carried by said actuating arms and adjustable relative to said actuator means.
Claim 8
Dependent Claim
56 words
A powered pipe spinning tong as defined in claim 1, wherein said adjustor means comprises a crank pivotally mounted on each actuating arm, each crank having a crank arm cooperable with said actuator means for spreading said actuating arms and another crank arm, and an adjustable connection between said actuating arm and said another crank arm.
Claim 9
Dependent Claim
73 words
A powered pipe spinning tong as defined in claim 1, wherein said adjustor means comprises a crank pivotally mounted on each actuating arm, each crank having a crank arm cooperable With said actuator means for spreading said actuating arms and another crank arm, and an adjustable connection between said actuating arm and said another crank arm, said adjustable connectiong including adjustable screw means carried by said actuating arm and said another crank arm.
Claim 10
Dependent Claim
99 words
A powered pipe spinning tong as defined in claim 1, wherein said adjustor means comprises a crank pivotally mounted on each actuating arm, each crank having a crank arm cooperable with said actuator means for spreading said actuating arms and another crank arm, and an adjustable connection between said actuating arm and said another crank arm, said adjustable connection including adjustable screw means carried by said actuating arm and said another crank arm, and means releasably connecting said adjustable screw means to one of said actuating arm and another crank arm for enabling adjustment of said adjustable screw means.
Claim 11
Dependent Claim
62 words
A powered pipe spinning tong as defined in claim 1, wherein said pipe gripping roller means comprises a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm, said drive means driving two of the opposing rollers, and including means supporting the other two opposing rollers to idle.
Claim 12
Dependent Claim
79 words
A powered pipe spinning tong as defined in claim 1, wherein said pipe gripping roller means comprises a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm, said drive means driving two of the opposing rollers, and including means adjustably supporting the other two opposing rollers for idling and for movement to positions relative to the driven rollers for engaging pipe of different diameters.
Claim 13
Dependent Claim
104 words
A powered pipe spinning tong as defined in claim 1, wherein said pipe gripping roller means comprises a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm, said drive means driving two of the opposing rollers, and including means adjustably supporting the other two opposing rollers for idling and for movement to positions relative to the driven rollers for engaging pipe of different diameters, the last mentioned means including shafts rotatably supporting the respective idling rollers, and means for adjusting the shafts towards and away from the driven rollers.
Claim 14
Dependent Claim
118 words
A powered pipe spinning tong comprising: a frame structure, a pair of elongated levers, pivot means pivotally mounting said levers on said frame structure with said levers extending in opposed laterally spaced relation, said levers having opposed actuating arms at one side of said pivot means and opposed pipe gripping arms at the other side of said pivot means, pipe gripping roller means actuatable into gripping engagement with a pipe upon spreading of said actuating arms, actuator means for spreading said actuating arms, drive means for rotating said pipe gripping roller means and a pipe gripped thereby, said pivot means comprising a supporting portion of said frame, and common means pivotally mounting said levers on said supporting portion.
Claim 15
Dependent Claim
118 words
A powered pipe spinning tong comprising: a frame structure, a pair of elongated levers, pivot means pivotally mounting said levers on said frame structure with said levers extending in opposed laterally spaced relation, said levers having opposed actuating arms at one side of said pivot means and opposed pipe gripping arms at the other side of said pivot means, pipe gripping roller means actuatable into gripping engagement with a pipe upon spreading of said actuating arms, actuator means for spreading said actuating arms, drive means for rotating said pipe gripping roller means and a pipe gripped thereby, said pivot means comprising a supporting portion of said frame, and common means pivotally mounting said levers on said supporting portion.
Claim 16
Dependent Claim
42 words
A powered pipe spinning tong as defined in claim 13, wherein said pipe gripping roller means comprise a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm.
Claim 17
Dependent Claim
53 words
A powered pipe spinning tong as defined in claim 13, wherein said pipe gripping roller means comprises a pair of rollers carried by each of said pipe gripping arms and in opposing relation to the rollers on the other pipe gripping arm, said drive means driving one of the rollers of each pair.
Claim 18
Dependent Claim
25 words
A powered pipe spinning tong as defined in claim 13, including adjustable means for adjusting said tong to grip pipe of a range of diameters.
Claim 19
Dependent Claim
37 words
A powered pipe spinning tong as defined in claim 13, including adjustable means for adjusting said tong to grip pipe of a range of diameters, said adjustablE means adjusting said actuator arms relative to said actuator means.
Claim 20
Dependent Claim
34 words
A powered pipe spinning tong as defined in claim 13, including adjustable means for adjusting said tong to grip pipe of a range of diameters, said adjustable means adjusting said pipe gripping roller 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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |