Patent US3633767A successfully refreshed from Google Patents.
US3633767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe-racking apparatus for oil well derricks or the like
Assignee: NOV Inc
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Filing: 1969-08-12
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Granted: 1972-01-11
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Expires: 1989-08-12
Abstract
Abstract The pipe-racking apparatus disclosed in detail hereinafter is intended for use in a derrick during the drilling of oil and gas wells or the like. During trips into and out of the wellbore, drill pipe is removed or added in the form of stands made up of a plurality of short pipe sections. This pipe-racking apparatus includes a transfer arm that consists of a pantograph mechanism carrying a pipe engaging and supporting member. The transfer arm is movable on tracks whereby the stands of pipe can be moved in the vertical position between the pipe-racking area and the centerline of the wellbore.
Inventors
- 👤 Joseph A Mitchell
- 👤 Norman D Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:34
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
Pipe-rackiNg apparatus for moving and supporting vertical sections of pipe in a derrick, said apparatus comprising: mounting means for supporting said apparatus in the derrick; transfer arm means carried by said mounting means, said arm means including an outer member positioned substantially vertically and pivotally mounted on said mounting means, an inner member disposed in parallel relationship to said outer member, and connecting means extending between and operably joining said inner and outer members for varying the distance between said inner and outer members while maintaining said parallel relationship; pipe-engaging means positioned on said inner member for engaging and supporting the vertical sections of pipe in the derrick, wherein said connecting means includes: a first connecting member having one end pivotally connected with said outer member and the other end movably connected with said inner member; a second connecting member having one end pivotally connected with said inner member and the other end movably connected with said outer member; and, said connecting members being pivotally connected between said ends.
Claim 2
Dependent Claim
169 words
Pipe-rackiNg apparatus for moving and supporting vertical sections of pipe in a derrick, said apparatus comprising: mounting means for supporting said apparatus in the derrick; transfer arm means carried by said mounting means, said arm means including an outer member positioned substantially vertically and pivotally mounted on said mounting means, an inner member disposed in parallel relationship to said outer member, and connecting means extending between and operably joining said inner and outer members for varying the distance between said inner and outer members while maintaining said parallel relationship; pipe-engaging means positioned on said inner member for engaging and supporting the vertical sections of pipe in the derrick, wherein said connecting means includes: a first connecting member having one end pivotally connected with said outer member and the other end movably connected with said inner member; a second connecting member having one end pivotally connected with said inner member and the other end movably connected with said outer member; and, said connecting members being pivotally connected between said ends.
Claim 3
Dependent Claim
45 words
The pipe-racking apparatus of claim 1 wherein said connecting means also includes power means for moving said other ends of said connecting members toward and away from said one ends of said connecting members whereby said inner and outer members are moved apart and together.
Claim 4
Dependent Claim
21 words
The pipe-racking apparatus of claim 1 and also including means for pivoting said transfer arm means relative to said mounting means.
Claim 5
Dependent Claim
37 words
The pipe-racking apparatus of claim 1 wherein: said pipe-engaging means is movable along said inner member; and, said apparatus also includes means for moving said pipe-engaging means for raising and lowering the pipe sections when engaged thereby.
Claim 6
Dependent Claim
31 words
The pipe-racking apparatus of claim 4 wherein said means for moving said pipe-engaging means includes hoisting apparatus operably connected with said pipe-engaging means and arranged to be mounted on said derrick.
Claim 7
Dependent Claim
79 words
The pipe-racking apparatus of claim 1 wherein said mounting means includes spaced upper and lower track members; said transfer arm means includes an upper carriage movable along said upper track member and pivotally supporting an upper end of said outer member, a lower carriage movable along said lower track member and pivotally supporting a lower end of said outer member; and, at least one of said carriages including means for propelling said transfer arm means along said track members.
Claim 8
Dependent Claim
299 words
Pipe-racking apparatus for moving and supporting vertical sections of pipe in a derrick, said apparatus comprising: mounting means for supporting said apparatus in the derrick, said mounting means including spaced upper and lower track members; transfer arm means carried by said mounting means, said arm means including an outer member positioned substantially vertically and pivotally mounted on said mounting means, an inner member disposed in parallel relationship to said outer member, connecting means extending between and operably joining said inner and outer member for varying the distance between the inner and outer members while maintaining said parallel relationship, said connecting means including a first connecting member having one end pivotally connected with said outer member and having the other end movably connected with said inner member, a second connecting member having one end pivotally connected with said inner member and having the other end movably connected with said outer member, and said connecting members being pivotally connected between said ends, power means for moving said other ends of said connecting members toward and away from said one end of said connecting members whereby said inner and outer members are moved apart and together, an upper carriage movable along said upper track member and pivotally supporting an upper end of said outer member, a lower carriage movable along said lower track member and pivotally supporting a lower end of said outer member, and at least one of said carriages including means for propelling said transfer arm means along said track members; pipe-engaging means movably positioned on said inner member for engaging and supporting the vertical sections of pipe in the derrick; means for moving said pipe-engaging means for raising or lowering the pipe sections when engaged thereby; and, means for pivoting said transfer arm means relative to said mounting means.
Claim 9
Dependent Claim
299 words
Pipe-racking apparatus for moving and supporting vertical sections of pipe in a derrick, said apparatus comprising: mounting means for supporting said apparatus in the derrick, said mounting means including spaced upper and lower track members; transfer arm means carried by said mounting means, said arm means including an outer member positioned substantially vertically and pivotally mounted on said mounting means, an inner member disposed in parallel relationship to said outer member, connecting means extending between and operably joining said inner and outer member for varying the distance between the inner and outer members while maintaining said parallel relationship, said connecting means including a first connecting member having one end pivotally connected with said outer member and having the other end movably connected with said inner member, a second connecting member having one end pivotally connected with said inner member and having the other end movably connected with said outer member, and said connecting members being pivotally connected between said ends, power means for moving said other ends of said connecting members toward and away from said one end of said connecting members whereby said inner and outer members are moved apart and together, an upper carriage movable along said upper track member and pivotally supporting an upper end of said outer member, a lower carriage movable along said lower track member and pivotally supporting a lower end of said outer member, and at least one of said carriages including means for propelling said transfer arm means along said track members; pipe-engaging means movably positioned on said inner member for engaging and supporting the vertical sections of pipe in the derrick; means for moving said pipe-engaging means for raising or lowering the pipe sections when engaged thereby; and, means for pivoting said transfer arm means relative to said mounting 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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |