US3760658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for supporting pipe tongs
Assignee: Individual
•
Filing: 1972-02-10
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Granted: 1973-09-25
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Expires: 1992-02-10
Abstract
Abstract An apparatus for supporting pipe tongs above a derrick floor including a pivot pad positioned on the derrick floor, a vertical support frame supported on the derrick floor having an upper horizontal arm portion extending above the pivot pad, a vertical pivot post rotatably supported between the pivot pad and the frame horizontal portion, the pipe tongs being affixed to and extending from the pivot post, and means of rotating the pivot post to thereby rotate the pipe tongs.
Inventors
- 👤 W Guier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:21
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
An improved apparatus for supporting pipe tongs above a derrick floor comprising: a pivot pad positioned on the derrick floor; a vertical support frame supported to said derrick floor and having an upper horizontal arm portion extending vertically above said pivot pad; a vertical pivot post rotatably supported between said pivot pad and said frame horizontal portion, the weight of the pivot post being supported by said frame horizontal portion, said pipe tongs being affixed to and extending from said pivot post; and means of rotating said pivot post to thereby rotate said pipe tongs.
Claim 2
Dependent Claim
95 words
An improved apparatus for supporting pipe tongs above a derrick floor comprising: a pivot pad positioned on the derrick floor; a vertical support frame supported to said derrick floor and having an upper horizontal arm portion extending vertically above said pivot pad; a vertical pivot post rotatably supported between said pivot pad and said frame horizontal portion, the weight of the pivot post being supported by said frame horizontal portion, said pipe tongs being affixed to and extending from said pivot post; and means of rotating said pivot post to thereby rotate said pipe tongs.
Claim 3
Dependent Claim
70 words
An improved apparatus for supporting pipe tongs above a derrick floor according to claim 1 wherein said pivot pad includes a parallel sided slot therein, and including: a parallel sided shoe slidably positioned in said pad slot, said pivot post being rotatably supported on said shoe whereby said pivot post may be pivoted slightly to move said tongs between operable positions above a well hole and an adjacent mouse hole.
Claim 4
Dependent Claim
56 words
An improved apparatus for supporting pipe tongs above a derrick floor according to claim 1 wherein said means of rotating said pivot post includes: a horizontal drum affixed coaxially to said pivot post; a cable received on said drum; and means of displacing said cable to cause said drum and thereby said pivot post to rotate.
Claim 5
Dependent Claim
172 words
An improved apparatus for supporting pipe tongs above a derrick floor according to claim 3 wherein said means of displacing said cable includes: a cylinder having a piston therein and a vertical piston rod extending therefrom, said cylinder being supported to said support frame; spaced apart first and second vertical pulleys supported to said support frame horizontal portion adjacent to said drum; and a lower pulley supported below said cylinder, said cable being looped around said drum, one end of said cable extending over one of said upper pulleys, and under said lower pulley, and attached to said piston rod, the other end of said cable extending over the other of said upper pulleys and attached to said piston rod whereby hydraulic pressure applied within said cylinder above said piston withdraws said piston rod within said cylinder, moving said cable and thereby said drum in one direction, and hydraulic pressure applied within said cylinder below said piston extends said piston rod and moves said cable and said drum in the opposite direction.
Claim 6
Dependent Claim
77 words
An apparatus for supporting pipe tongs above a derrick floor according to claim 4 including: a vertical yoke member slidably encompassing said cylinder having an upper portion and a lower portion, one of said portions being affixed to said piston rod whereby said yoke is vertically displaced by said piston rod, one end of said cable being affixed to said yoke upper end and the other end of said cable being affixed to said yoke lower end.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |