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Patent US3870109A successfully refreshed from Google Patents.
US3870109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic drilling or servicing rig
Assignee: Individual
•
Filing: 1974-03-22
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Granted: 1975-03-11
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Expires: 1994-03-22
Abstract
Abstract A fluid operator extends and retracts vertically, elevators with or without the rotary head for placing and pulling drill pipe by the combination of scissor type linkage which moves the head vertically. The linkage includes inner and outer members which fold due to the fluid operator and cross over from a lower position to an upper position and vice versa thus giving a relatively large vertical movement to the head which enables the device to be used with standard lengths of drill pipe up to, for example, 32 feet with a fluid operator having a stroke considerably less than the length of the pipe being moved.
Inventors
- 👤 Benjamin C Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:07
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/086; E21B19/02; E21B19/20; E21B3/00; E21B3/02; E21B3/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
In an hydraulic drilling rig which includes supporting structure, a source of power, an hydraulic pump, a control panel and hydraulic hoses interconnecting same; the improvement comprises an operating unit mounted upon said supporting structure, said unit comprising in combination support members extending upwardly from said supporting structure, a parallelogram outer linkage system pivotally secured by one end thereof to said support members, an hydraulic piston and cylinder assembly, a rotary head supporting linkage system pivotally secured intermediate the ends thereof to said cylinder intermediate the ends thereof, a rotary head pivotally securing one end of said supporting linkage system, and link means interconnecting said piston rod to said outer linkage system, the other end of said supporting link system being pivotally connected to the other end of said outer linkage system.
Claim 2
Dependent Claim
132 words
In an hydraulic drilling rig which includes supporting structure, a source of power, an hydraulic pump, a control panel and hydraulic hoses interconnecting same; the improvement comprises an operating unit mounted upon said supporting structure, said unit comprising in combination support members extending upwardly from said supporting structure, a parallelogram outer linkage system pivotally secured by one end thereof to said support members, an hydraulic piston and cylinder assembly, a rotary head supporting linkage system pivotally secured intermediate the ends thereof to said cylinder intermediate the ends thereof, a rotary head pivotally securing one end of said supporting linkage system, and link means interconnecting said piston rod to said outer linkage system, the other end of said supporting link system being pivotally connected to the other end of said outer linkage system.
Claim 3
Dependent Claim
132 words
In an hydraulic drilling rig which includes supporting structure, a source of power, an hydraulic pump, a control panel and hydraulic hoses interconnecting same; the improvement comprises an operating unit mounted upon said supporting structure, said unit comprising in combination support members extending upwardly from said supporting structure, a parallelogram outer linkage system pivotally secured by one end thereof to said support members, an hydraulic piston and cylinder assembly, a rotary head supporting linkage system pivotally secured intermediate the ends thereof to said cylinder intermediate the ends thereof, a rotary head pivotally securing one end of said supporting linkage system, and link means interconnecting said piston rod to said outer linkage system, the other end of said supporting link system being pivotally connected to the other end of said outer linkage system.
Claim 4
Dependent Claim
132 words
In an hydraulic drilling rig which includes supporting structure, a source of power, an hydraulic pump, a control panel and hydraulic hoses interconnecting same; the improvement comprises an operating unit mounted upon said supporting structure, said unit comprising in combination support members extending upwardly from said supporting structure, a parallelogram outer linkage system pivotally secured by one end thereof to said support members, an hydraulic piston and cylinder assembly, a rotary head supporting linkage system pivotally secured intermediate the ends thereof to said cylinder intermediate the ends thereof, a rotary head pivotally securing one end of said supporting linkage system, and link means interconnecting said piston rod to said outer linkage system, the other end of said supporting link system being pivotally connected to the other end of said outer linkage system.
Claim 5
Dependent Claim
38 words
The invention according to claim 1 which includes sprocket and chain means interconnected between said outer linkage system and said head supporting linkage system for controlling the movement therebetween when said piston and cylinder is extended or retracted.
Claim 6
Dependent Claim
83 words
The invention according to claim 1 in which said outer linkage system includes a first pair of spaced and parallel main link members pivotally secured by one end thereof to adjacent the upper ends of said support members, a pair of brace links pivotally secured by one end thereof to said support members below said main linkage members, a second pair of link members pivotally secured between the other ends of said first linkage members and the other ends of said brace links.
Claim 7
Dependent Claim
73 words
The invention according to claim 1 in which said head support linkage system includes a pair of spaced and parallel link members pivoted intermediate the ends to said cylinder intermediate the ends of said cylinder, said rotary head being pivoted between the one ends of said spaced and parallel link members, the other ends of said spaced and parallel link members being pivotally secured to the other ends of said outer linkage system.
Claim 8
Dependent Claim
73 words
The invention according to claim 2 in which said head support linkage system includes a pair of spaced and parallel link members pivoted intermediate the ends to said cylinder intermediate the ends of said cylinder, said rotary head being pivoted between the one ends of said spaced and parallel link members, the other ends of said spaced and parallel link members being pivotally secured to the other ends of said outer linkage system.
Claim 9
Dependent Claim
73 words
The invention according to claim 3 in which said head support linkage system includes a pair of spaced and parallel link members pivoted intermediate the ends to said cylinder intermediate the ends of said cylinder, said rotary head being pivoted between the one ends of said spaced and parallel link members, the other ends of said spaced and parallel link members being pivotally secured to the other ends of said outer linkage system.
Claim 10
Dependent Claim
71 words
The invention according to claim 1 in which said link means interconnecting said piston rod to said outer linkage system includes a head frame secured to said piston rod, said frame including a cross member and a pair of spaced and parallel side mEmbers extending from the ends of said cross member, the distal ends of said side members being pivotally secured to intermediate the ends of said outer linkage system.
Claim 11
Dependent Claim
71 words
The invention according to claim 2 in which said link means interconnecting said piston rod to said outer linkage system includes a head frame secured to said piston rod, said frame including a cross member and a pair of spaced and parallel side members extending from the ends of said cross member, the distal ends of said side members being pivotally secured to intermediate the ends of said outer linkage system.
Claim 12
Dependent Claim
77 words
The invention according to claim 3 in which said link means interconnecting said piston rod to said outer linkage system includes a head frame secured to said piston rod, said frame including a cross member and a pair of spaced and parallel side members extending from the ends of said cross member, the distal ends of said side members being pivotally secured to intermediate the ends of said first pair of spaced and parallel main link members.
References Cited (Backward Citations)
US2513246A
Cited
US2950085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |