US3780883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe handling system for use in well drilling
Assignee: Baker Hughes Holdings LLC
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Filing: 1972-07-25
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Granted: 1973-12-25
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Expires: 1992-07-25
Abstract
Abstract A pipe handling system for use in well drilling. The system includes pipe storage racks, power-operated conveyor means for advancing the pipe sections to a drilling derrick and for transferring the pipe sections from the storage racks to the conveyor means; power swivel means supported by the derrick hoist adapted for connection to the pipe sections, and power-actuated pivoting means connecting the power swivel means to the hoist to enable angular movement of the swivel means as required to effect alignment thereof with the forward ends of the pipe sections entering the derrick from the conveyor means.
Inventors
- 👤 C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:01
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/20; E21B19/14; E21B19/15; E21B19/155
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
147 words
A pipe handling system for delivering pipe sections to a well drilling derrick, comprising: a. pipe rack means for horizontally supporting a plurality of pipe sections in parallel relation to each other and pivotable about its longitudinal axis; b. elongate conveyor means disposed alongside said rack means and tiltable about its longitudinal axis to receive pipe sections from said rack means; c. dual-ended, integral, pivoted detent means having one end initially holding successive ones of said pipe sections on said rack means and releasable in response to tilting of said conveyor means to free said pipe sections for rolling movement from said rack means onto said conveyor means, the opposite end of said detent means being simultaneously interposed into holding position with the pipe section immediately succeedinG that being released; and d. means mounted on said conveyor means for advancing the received pipe sections into the derrick.
Claim 2
Dependent Claim
147 words
A pipe handling system for delivering pipe sections to a well drilling derrick, comprising: a. pipe rack means for horizontally supporting a plurality of pipe sections in parallel relation to each other and pivotable about its longitudinal axis; b. elongate conveyor means disposed alongside said rack means and tiltable about its longitudinal axis to receive pipe sections from said rack means; c. dual-ended, integral, pivoted detent means having one end initially holding successive ones of said pipe sections on said rack means and releasable in response to tilting of said conveyor means to free said pipe sections for rolling movement from said rack means onto said conveyor means, the opposite end of said detent means being simultaneously interposed into holding position with the pipe section immediately succeedinG that being released; and d. means mounted on said conveyor means for advancing the received pipe sections into the derrick.
Claim 3
Dependent Claim
34 words
A pipe handling system according to claim 1 wherein said conveyor means comprises articulated rearward and forward sections pivotally connected to permit vertical angular movement of the forward section relative to the rearward section.
Claim 4
Dependent Claim
32 words
A pipe handling system according to claim 2 including: a. power-operated means for tilting said conveyor means; and b. power-operated means for effecting said vertical angular movement of said forward conveyor section.
Claim 5
Dependent Claim
16 words
A pipe handling system according to claim 1 including power-operated means for tilting said conveyor 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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |