US3796401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled drilling rings for boring blastholes and small-diameter wells
Assignee: Individual
•
Filing: 1972-10-12
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Granted: 1974-03-12
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Expires: 1992-10-12
Abstract
Abstract A self-propelled drilling rig for boring blastholes and smalldiameter wells is disclosed, said rig comprising a carriage mounted on the frame of an undercarriage and provided with a manipulator carrying a boring tool. The drilling rig is provided with a servomechanism having a hydraulic drive with a reduction gear, which is operatively connected to a longitudinally movable slide valve, and a plate attached to the slide valve and cooperating with a pusher rigidly secured to the jib manipulator.
Inventors
- 👤 A Tkachenko
- 👤 K Mustafin
- 👤 M Kadyrov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:42
CPC Classifications
F; F15; F15B; F15B17/00; E; E21; E21B; E21B1/00; E21B1/36; E21B7/00; E21B7/02; E21B7/022; E21B7/025; F15B9/00; F15B9/02; F15B9/08; F15B9/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
A self-propelled drilling rig for boring blastholes and small-diameter wells, said drilling rig comprising: a frame mounted on an undercarriage of said drilling rig; a carriage mounted on said frame; a jib manipulator swingably mounted on said carriage for carrying a feeding mechanism of a boring tool; drive means for moving said jib manipulator in vertical and horizontal directions, said drive means comprising hydraulic cylinders with slide valves; and a servomechanism comprising a hydraulic cylinder mounted on said frame, the movable part of said cylinder being connected to said carriage and the working chambers of said cylinder communicating with a longitudinally movable slide valve and with a hydraulic drive provided with a reduction gear operatively connected to said longitudinally movable slide valve, and a plate being attached to said slide valve, said plate cooperating with a pusher rigidly secured to said jib manipulator.
Claim 2
Dependent Claim
143 words
A self-propelled drilling rig for boring blastholes and small-diameter wells, said drilling rig comprising: a frame mounted on an undercarriage of said drilling rig; a carriage mounted on said frame; a jib manipulator swingably mounted on said carriage for carrying a feeding mechanism of a boring tool; drive means for moving said jib manipulator in vertical and horizontal directions, said drive means comprising hydraulic cylinders with slide valves; and a servomechanism comprising a hydraulic cylinder mounted on said frame, the movable part of said cylinder being connected to said carriage and the working chambers of said cylinder communicating with a longitudinally movable slide valve and with a hydraulic drive provided with a reduction gear operatively connected to said longitudinally movable slide valve, and a plate being attached to said slide valve, said plate cooperating with a pusher rigidly secured to said jib manipulator.
Claim 3
Dependent Claim
51 words
A self-proPelled drilling rig as claimed in claim 1, wherein the housing of said slide valve of said servomechanism is operatively connected to said reduction gear, while a stem of said slide valve is spring-loaded and said plate cooperating with said pusher of said jib manipulator is attached to said stem.
Claim 4
Dependent Claim
46 words
A self-propelled drilling rig as claimed in claim 1, wherein a stem of said slide valve of said servomechanism is operatively connected to said reduction gear, while said plate cooperating with said pusher of said jib manipulator is attached to the housing of said slide valve.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |