US3571865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power drill pipe and drill collar spider
Assignee: Jackson Memorial Hospital
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Filing: 1969-10-06
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Granted: 1971-03-23
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Expires: 1989-10-06
Abstract
Abstract Power drill pipe and drill collar spider apparatus in which drill pipe slip elements and drill collar slip elements are selectively connectable to an actuator ring, the actuator ring being movable between positions at which either the drill pipe slip elements or the drill collar slip elements are disposed in the slip bowl or are retracted from the slip bowl, while the other of the slip elements are latched in retracted positions.
Inventors
- 👤 Noal E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:10
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
140 words
A combined drill collar and drill pipe spider comprising: a slip bowl having a downwardly tapered vertical opening for drill collars and drill pipe, support means disposed about said opening, a plurality of drill collar slips spaced about said opening, means mounting said drill collar slips on said support means for movement between a drill collar engaging position in said opening and a retracted position, a plurality of drill pipe slips spaced about said opening, means mounting said drill pipe slips for movement between a drill pipe engaging position in said opening and a retracted position, means for selectively holding each of said slips in a retracted position, operating means for moving said slips between said positions, and means for selectively connecting said drill collar slips and said drill pipe slips to said operating means for operation by the latter.
Claim 2
Dependent Claim
140 words
A combined drill collar and drill pipe spider comprising: a slip bowl having a downwardly tapered vertical opening for drill collars and drill pipe, support means disposed about said opening, a plurality of drill collar slips spaced about said opening, means mounting said drill collar slips on said support means for movement between a drill collar engaging position in said opening and a retracted position, a plurality of drill pipe slips spaced about said opening, means mounting said drill pipe slips for movement between a drill pipe engaging position in said opening and a retracted position, means for selectively holding each of said slips in a retracted position, operating means for moving said slips between said positions, and means for selectively connecting said drill collar slips and said drill pipe slips to said operating means for operation by the latter.
Claim 3
Dependent Claim
66 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein the means mounting each of said slips on said support means comprises a lever pivotally mounted between its ends, one of said slips being connected to one end of said lever, and said means for selectively connecting said slips to said operating means being connected to the other end of said lever.
Claim 4
Dependent Claim
75 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein the means for mounting each of said slips on said support means comprises a lever pivotally mounted between its ends, one of said slips being connected to one end of said lever, and said means for selectively holding each of said slips in a retracted position comprises latch means carried by said support means and the other end of said lever.
Claim 5
Dependent Claim
49 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said operating means comprises a ring, means for mounting said ring on said support means for vertical movement of said ring to move said slips between said positions, and means for shifting said ring vertically.
Claim 6
Dependent Claim
53 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said operating means comprises a ring, means for mounting said ring on said support means for vertical movement of said ring to move said slips between said positions, and power means for shifting said ring vertically in opposite directions.
Claim 7
Dependent Claim
81 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said operating means comprises a ring, means for mounting said ring on said support means for vertical movement of said ring, said means for selectively connecting each of said slips to said operating means comprising a rod connected to a slip, a bore in said ring reciprOcably receiving said rod, and pin means selectively engageable with said rod to hold said rod against movement in said bore.
Claim 8
Dependent Claim
41 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said support means includes a radially removable section removably connected to said spider, one of said slips and its mounting means being carried by said removable section.
Claim 9
Dependent Claim
52 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said support means includes a radially removable section removably connected to said spider, one of said slips and its mounting means being carried by said removable section, and said operating means includes a ring having a removable segment.
Claim 10
Dependent Claim
76 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said support means includes a plate having a radial slot, a plate section removably disposed in said slot, said plate and said plate section having portions disposable in adjacent relation and having alignable openings, pin means engageable in said openings to secure said plate section in said slot, one of said slips and its mounting means being carried by said plate section.
Claim 11
Dependent Claim
115 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said support means includes a plate having a radial slot, a plate section removably disposed in said slot, said plate and said plate section having portions disposable in adjacent relation and having alignable openings, pin means engageable in said openings to secure said plate section in said slot, one of said slips and its mounting means being carried by said plate section, said operating means comprising a ring, said ring having a removable segment, said ring and said segment having portions provided with alignable openings, and pin means engageable in said latter openings to connect said ring segment to said ring.
Claim 12
Dependent Claim
40 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said operating means comprises a ring, and post and sleeve means carried by said support means and said ring and coengaged to guide said ring vertically.
Claim 13
Dependent Claim
47 words
A combined drill collar and drill pipe spider as defined in claim 1, wherein said operating means comprises a ring, means guiding said ring for vertical movement, and double-acting fluid-pressure-operated actuator means between said ring and said support means for moving said ring vertically in opposite directions.
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |