Patent US3966053A successfully refreshed from Google Patents.
US3966053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling apparatus
Assignee: Keppel LeTourneau USA Inc
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Filing: 1975-04-25
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Granted: 1976-06-29
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Expires: 1995-04-25
Abstract
Abstract A drilling apparatus and more particularly a drilling apparatus having improved drill pipe storage and handling means therefor.
Inventors
- 👤 James B. Loftis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:55
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14; E21B19/146; Y; Y10; Y10T; Y10T483/00; Y10T483/18; Y10T483/1809
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
158 words
A drill pipe storage rack comprising: a plurality of drill pipe support means, each of said support means including an upper drill pipe supporting assembly adapted to support an upper end portion of a drill pipe, a lower drill pipe supporting assembly adapted to support a lower end portion of such drill pipe and actuator means; each of said lower drill pipe supporting assemblies including latch means having a projection movable into a drill pipe contacting position in response to a drill pipe being lowered onto a portion of a respective one of said actuator means, and said projection movable into a drill pipe non-contacting position in response to a drill pipe being raised from said portion; said projection further positionable when in said contacting position between a release position wherein said projection contacts the outer periphery only of such drill pipe and a lock position wherein said projection extends within the outer periphery of such drill pipe.
Claim 2
Dependent Claim
158 words
A drill pipe storage rack comprising: a plurality of drill pipe support means, each of said support means including an upper drill pipe supporting assembly adapted to support an upper end portion of a drill pipe, a lower drill pipe supporting assembly adapted to support a lower end portion of such drill pipe and actuator means; each of said lower drill pipe supporting assemblies including latch means having a projection movable into a drill pipe contacting position in response to a drill pipe being lowered onto a portion of a respective one of said actuator means, and said projection movable into a drill pipe non-contacting position in response to a drill pipe being raised from said portion; said projection further positionable when in said contacting position between a release position wherein said projection contacts the outer periphery only of such drill pipe and a lock position wherein said projection extends within the outer periphery of such drill pipe.
Claim 3
Dependent Claim
84 words
The drill pipe storage rack as specified in claim 1 wherein each of said actuator means is cooperable with a respective one of said upper drill pipe supporting assemblies to move said respective upper supporting assembly into a drill pipe support position in response to such drill pipe being lowered onto a respective one of said portions and to move said respective upper supporting assembly out of said drill pipe support position when such drill pipe is raised from said one of said portions.
Claim 4
Dependent Claim
45 words
The drill pipe storage rack as specified in claim 1 wherein each said actuator means includes a spring for urging a respective one of said projections into said lock position from said release position when said one of said projections is in said contacting position.
Claim 5
Dependent Claim
86 words
The drill pipe storage rack as specified in claim 1 wherein each of said projections includes a cammed surface for moving a respective one of said projections from said lock position to said release position when said one of said projections is in said contacting position and only when a respective drill pipe is rotated in a given direction; and when said one of said projections is in said lock position such drill pipe is prevented from being rotated in the direction opposite said given direction.
Claim 6
Dependent Claim
31 words
The drill pipe storage rack as specified in claim 1 wherein said lower drill pipe supporting assembly includes means adapted to surround a drill pipe to limit the radial movement thereof.
Claim 7
Dependent Claim
64 words
The drill pipe storage rack as specified in claim 1 wherein each of said actuator means further comprises a linkage rod connected between a respective one of said portions and a respective one of said latch means; each of said linkage rods having a cam portion for controlling the movement of a respective one of said projections between said contacting and said non-contacting positions.
Claim 8
Dependent Claim
125 words
A drill pipe storage rack comprising: plurality of drill pipe support means, each of said support means including an upper drill pipe supporting assembly adapted to support an upper end portion of a drill pipe, a lower drill pipe supporting assembly adapted to support a lower end portion of such drill pipe and an actuator means; each of said lower drill pipe supporting assemblies including latch means movable in a generally horizontal plane into a drill pipe contacting position in response to a portion of a respective one of said actuator means being moved into a first position and said latch means movable in said plane into a drill pipe non-contacting position in response to movement of said portion being moved into a second position.
Claim 9
Dependent Claim
125 words
A drill pipe storage rack comprising: plurality of drill pipe support means, each of said support means including an upper drill pipe supporting assembly adapted to support an upper end portion of a drill pipe, a lower drill pipe supporting assembly adapted to support a lower end portion of such drill pipe and an actuator means; each of said lower drill pipe supporting assemblies including latch means movable in a generally horizontal plane into a drill pipe contacting position in response to a portion of a respective one of said actuator means being moved into a first position and said latch means movable in said plane into a drill pipe non-contacting position in response to movement of said portion being moved into a second position.
Claim 10
Dependent Claim
93 words
The drill pipe storage rack as specified in claim 7 wherein each of said actuator means is connected with a respective one of said upper drill pipe supporting assemblies to move said one upper assembly into a drill pipe support position in response to said portion of a respective one of said actuator means being moved into said first position and to move said one upper assembly out of said drill pipe support position in response to said portion of a respective one of said actuator means being moved into said second position.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |