Patent US4938296A successfully refreshed from Google Patents.
US4938296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill rig assembly
Assignee: Pacer Works Ltd
•
Filing: 1988-10-12
•
Granted: 1990-07-03
•
Expires: 2008-10-12
Abstract
Abstract A drill rig assembly adapted to be mounted on a vehicle and having a pivotal link assembly mounted to the vehicle. Attached in slidable relationship to the link assembly is a mast assembly containing feed means and rotary means fully enclosed within the mast assembly. An electronic level within the mast assembly automatically maintains the mast assembly in a predetermined, angular position. The drill rig assembly is capable of drilling either vertically or at selected, incremental angles. The drill rig assembly is designed to be safe in operation and lightweight, while providing performance characteristics of larger drill rigs.
Inventors
- 👤 II James W. Brazell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:42
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/022; E21B7/027; E21B7/028
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
97 words
A drilling apparatus for driving a drill rod into a selected location, comprising: (a) a mast frame; (b) actuating means attached to said mast frame for moving said mast frame in a position adjacent to said selected location; (c) rotary means contained within said mast frame for rotating said drill rod; and (d) feed means positioned within said mast frame and concentrically aligned with said drill rod and being disposed above said drill rod when said mast frame is in a vertical position for pushing and pulling said drill rod toward and away from said selected location.
Claim 2
Dependent Claim
97 words
A drilling apparatus for driving a drill rod into a selected location, comprising: (a) a mast frame; (b) actuating means attached to said mast frame for moving said mast frame in a position adjacent to said selected location; (c) rotary means contained within said mast frame for rotating said drill rod; and (d) feed means positioned within said mast frame and concentrically aligned with said drill rod and being disposed above said drill rod when said mast frame is in a vertical position for pushing and pulling said drill rod toward and away from said selected location.
Claim 3
Dependent Claim
30 words
The apparatus defined in claim 1, wherein said actuating means is also capable of selectively actuating said mast assembly at incremental position from a vertical position to a horizontal position.
Claim 4
Dependent Claim
36 words
The apparatus defined in claim 1, wherein said actuating means is comprised of a first link assembly, a second link assembly pivotally connected to said first link assembly and also pivotally connected to said mast assembly.
Claim 5
Dependent Claim
43 words
The apparatus defined in claim 3, wherein said actuating means includes a first cylinder assembly attached to said first link assembly and a second cylinder assembly attached to said second link assembly for moving said first and second link assemblies to selected positions.
Claim 6
Dependent Claim
29 words
The apparatus defined in claim 1, wherein said feed means selectively raises and lowers said mast assembly at incremental positions when said mast assembly is in a vertical position.
Claim 7
Dependent Claim
16 words
The apparatus defined in claim 1, wherein said feed means consists of a hydraulic cylinder means.
Claim 8
Dependent Claim
30 words
The apparatus defined in claim 1, and counterbalance valve means attached to said hydraulic cylinder means for controlling the flow of fluid into and out of said hydraulic cylinder means.
Claim 9
Dependent Claim
42 words
The apparatus defined in claim 1, wherein said rotary means is comprised of a hydraulic motor, a gear box assembly mounted to said hydraulic motor in longitudinal relationship, and a spindle adapter attached to said gear box assembly in longitudinal relationship therewith.
Claim 10
Dependent Claim
47 words
The apparatus defined in claim 1, wherein said actuating means includes a guide and wherein said mast assembly includes a flange for being received within said guide for slidable movement in said guide, whereby said mast assembly is in slidable relationship with respect to said actuating means.
Claim 11
Dependent Claim
34 words
The apparatus defined in claim 1, wherein said actuating means includes an arm and wherein said mast assembly defines a channel, said arm being received within said channel for attachment to said feed means.
Claim 12
Dependent Claim
30 words
The apparatus defined in claim 10, whereby said mast assembly is raised and lowered, when in a vertical position, by the force applied by said feed means onto said arm.
Claim 13
Dependent Claim
28 words
The apparatus defined in claim 1, wherein said mast assembly includes an electronic level means mounted therein for automatically maintaining said mast assembly in a predetermined, selected position.
Claim 14
Dependent Claim
30 words
The apparatus defined in claim 1, including hydraulic circuit means connected to said mast assembly, said actuating means, said rotary means and said feed means for controlling their respective movement.
Claim 15
Dependent Claim
21 words
The apparatus defined in claim 13, including hydraulic control for selectively controlling the flow of fluid in said hydraulic circuit means.
Claim 16
Dependent Claim
13 words
The apparatus defined in claim 1, hereby said mast assembly includes a winch.
Claim 17
Dependent Claim
19 words
The apparatus defined in claim 1, whereby said mast assembly includes a cathead mounted on the off-hole link assembly.
Claim 18
Dependent Claim
18 words
The apparatus defined in claim 16, wherein said cat head cannot turn while said rotary means is turning.
Claim 19
Dependent Claim
130 words
A drilling apparatus for driving a drill rod into a selected location, comprising: (a) an elongate mast frame having an upper end portion and a lower end portion and defining a chamber; (b) actuating means attached to said elongate mast frame for moving said lower end portion of said mast from adjacent to said selected location; (c) rotary means for rotating said drill rod attached to said mast frame and positioned within said chamber at said lower end portion of said mast frame, said drill rod being attached to said rotary means; and (d) feed means positioned within said chamber at said upper end portion of said mast frame and adjacent to said rotary means and in concentric alignment with said drill rod for pushing and pulling said drill rod.
Claim 20
Dependent Claim
130 words
A drilling apparatus for driving a drill rod into a selected location, comprising: (a) an elongate mast frame having an upper end portion and a lower end portion and defining a chamber; (b) actuating means attached to said elongate mast frame for moving said lower end portion of said mast from adjacent to said selected location; (c) rotary means for rotating said drill rod attached to said mast frame and positioned within said chamber at said lower end portion of said mast frame, said drill rod being attached to said rotary means; and (d) feed means positioned within said chamber at said upper end portion of said mast frame and adjacent to said rotary means and in concentric alignment with said drill rod for pushing and pulling said drill rod.
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) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |