Patent US3868076A successfully refreshed from Google Patents.
US3868076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed traverse mechanism
Assignee: Cannon Industries Inc
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Filing: 1973-10-17
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Granted: 1975-02-25
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Expires: 1993-10-17
Abstract
Abstract The invention herein relates to adjustable tool supports and more particularly to an adjustable rock drill mounting having a crossover mechanism which permits controlled lateral translation of a rock drill feed frame mounted thereon with respect to the longitudinal center line of its supporting boom.
Inventors
- 👤 Jr Michael A Beagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:00
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
A drill mounting comprising: an elongated boom assembly; guide frame supporting and traversing means pivotally carried by said boom assembly adjacent one end portion thereof for limited rotation about a first pivot axis extending in a direction substantially normal to the longitudinal axis of said boom; said traversing means having a serial plurality of link elements each pivotally connected to the adjacent link elements to form a closed polygon with the pivot axes of said link elements being located at the respective apexes of said polygon, being parallel to each other, and extending in a direction substantially normal to the longitudinal axis of said boom and said first pivot axis; an elongated drill guide frame assembly pivotally carried by at least one of said link elements for rotation about a second pivot axis; and selectively operable means pivotally carried by at least one of said link elements and cooperable with said traversing means to selectively move said second pivot axis generally transversely to either side of said longitudinal axis.
Claim 2
Dependent Claim
169 words
A drill mounting comprising: an elongated boom assembly; guide frame supporting and traversing means pivotally carried by said boom assembly adjacent one end portion thereof for limited rotation about a first pivot axis extending in a direction substantially normal to the longitudinal axis of said boom; said traversing means having a serial plurality of link elements each pivotally connected to the adjacent link elements to form a closed polygon with the pivot axes of said link elements being located at the respective apexes of said polygon, being parallel to each other, and extending in a direction substantially normal to the longitudinal axis of said boom and said first pivot axis; an elongated drill guide frame assembly pivotally carried by at least one of said link elements for rotation about a second pivot axis; and selectively operable means pivotally carried by at least one of said link elements and cooperable with said traversing means to selectively move said second pivot axis generally transversely to either side of said longitudinal axis.
Claim 3
Dependent Claim
15 words
A drill mounting assembly as specified in claim 1 wherein said polygon is a parallelogram.
Claim 4
Dependent Claim
28 words
A drill mounting assembly as specified in claim 1 wherein said second pivot axis extends in a direction substantially parallel to said pivot axes of said link elements.
Claim 5
Dependent Claim
23 words
A drill mounting assembly as specified in claim 2 wherein said selectively operable means is pivotally connected to two of said link elements.
Claim 6
Dependent Claim
28 words
A drill mounting assembly as specified in claim 4 wherein said two of said link elements are pivotally connected to each other at the respective adjacent ends thereof.
Claim 7
Dependent Claim
25 words
A drill mounting assembly as specified in claim 2 wherein said link elements maintain a parallelogram throughout the transverse movement of said guide frame assembly.
Claim 8
Dependent Claim
19 words
A drill mounting assembly as specified in claim 6 wherein said plurality of link elements is four link elements.
Claim 9
Dependent Claim
17 words
A drill mounting assembly as specified in claim 4 wherein said selectiveLy operable means is fluid operable.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |