US3754361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportable drilling mast substructure with elevatable drawworks
Assignee: PYRAMID DERRICK AND EQUIPMENT CO
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Filing: 1972-06-26
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Granted: 1973-08-28
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Expires: 1992-06-26
Abstract
Abstract A transportable support structure for a drilling mast and drawworks includes spaced longitudinally extending members with lateral brace members extending therebetween to provide a support structure for a gin pole support and a drilling mast as well as an elevatable drawworks support structure which is pivotally secured to the transportable support structure. Support means are provided for supporting the elevatable drawworks support in an intermediate position between retracted position on the support structure and elevated position to enable the support structure, drilling mast and drawworks to be moved from one location to another.
Inventors
- 👤 D Branham
- 👤 P Borg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:29
CPC Classifications
E; E21; E21B; E21B15/00; E21B7/00; E21B7/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
A transportable support structure for a drilling mast and drawworks comprising: a. a support structure including: 1. spaced, longitudinally extending members; 2. lateral brace members secured to and extending between said longitudinally extending members; b. gin pole means secured to said support structure; c. mast support means secured to said support structure; d. an elevatable drawworks support structure pivotally secured to said support structure adjacent said gin pole support means; e. means on said support structure for supporting said drawworks support structure in retracted position thereon; f. support means for supporting said elevatable drawworks support in an intermediate position between retracted position and elevated position on said support structure; and g. wheel support means secured to said support structure inboard and outboard of said spaced, longitudinally extending members.
Claim 2
Dependent Claim
128 words
A transportable support structure for a drilling mast and drawworks comprising: a. a support structure including: 1. spaced, longitudinally extending members; 2. lateral brace members secured to and extending between said longitudinally extending members; b. gin pole means secured to said support structure; c. mast support means secured to said support structure; d. an elevatable drawworks support structure pivotally secured to said support structure adjacent said gin pole support means; e. means on said support structure for supporting said drawworks support structure in retracted position thereon; f. support means for supporting said elevatable drawworks support in an intermediate position between retracted position and elevated position on said support structure; and g. wheel support means secured to said support structure inboard and outboard of said spaced, longitudinally extending members.
Claim 3
Dependent Claim
106 words
lateral brace members secured to and extending between said longitudinally extending members; b. gin pole means secured to said support structure; c. mast support means secured to said support structure; d. an elevatable drawworks support structure pivotally secured to said support structure adjacent said gin pole support means; e. means on said support structure for supporting said drawworks support structure in retracted position thereon; f. support means for supporting said elevatable drawworks support in an intermediate position between retracted position and elevated position on said support structure; and g. wheel support means secured to said support structure inboard and outboard of said spaced, longitudinally extending members.
Claim 4
Dependent Claim
106 words
lateral brace members secured to and extending between said longitudinally extending members; b. gin pole means secured to said support structure; c. mast support means secured to said support structure; d. an elevatable drawworks support structure pivotally secured to said support structure adjacent said gin pole support means; e. means on said support structure for supporting said drawworks support structure in retracted position thereon; f. support means for supporting said elevatable drawworks support in an intermediate position between retracted position and elevated position on said support structure; and g. wheel support means secured to said support structure inboard and outboard of said spaced, longitudinally extending members.
Claim 5
Dependent Claim
42 words
The invention of claim 1 wherein said elevatable drawworks support structure includes hydraulic cylinders and piston means thereon whereby hydraulic fluid supplied to said cylinders act on said piston means therein to effect raising and lowering of said elevatable drawworks support structure.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |