US3893520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Canopy assembly for a dual boom drill
Assignee: Tamrock World Corp NV
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Filing: 1974-01-21
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Granted: 1975-07-08
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Expires: 1994-01-21
Abstract
Abstract A portable drilling machine has a forwardly extending horizontal platform upon which is pivotally mounted a pair of spaced forwardly extending frames. The frames are arranged on the horizontal platform to pivot toward and away from each other in a horizontal plane. Each frame carries a boom assembly having front end and rear end portions. The boom assembly front end portion supports a drill unit. The boom assembly is operable to raise the drill unit in a linear vertical path while the frame is arranged to move the boom assembly and the drill unit in a horizontal plane. A canopy assembly having front end and rear end portions is positioned in overlying relationship with the frame and boom assembly and includes a portion covered with an expanded metal screen positioned adjacent the drill unit. The front end portion is pivotally connected to an extensible rod that is concentrically positioned within a lift cylinder rigidly mounted to the frame. Actuation of the lift cylinder extends the rod vertically upwardly to move the front end portion in a vertical plane. The rear end portion is rotatably mounted to the frame and is operable upon actuation of the lift cylinder to move longitudinally in a linear horizontal path on the frame to permit linear vertical movement of the front end portion. With this arrangement, the canopy assembly is moved in a linear vertical path to a preselected height above the portable drilling machine and protects the drill operator during the drilling operation.
Inventors
- 👤 Thomas W Mccormick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:16
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/026; E21D; E21D19/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
A canopy for a dual boom drill comprising, a mobile body having a horizontal platform, drill means, a forwardly extending frame pivotally mounted to said horizontal platform, a boom assembly having front end and rear end portions, said boom assembly rear end portion pivotally secured to said forwardly extending frame to permit movement of said drill means supported by said boom assembly front end portion in a vertical plane, a canopy assembly having front end and rear end portions maintained in overlying relationship with said forwardly extending frame, extensible means for moving said canopy assembly front end portion in a linear vertical path to a preselected height above said frame, and articulating means for connecting said canopy assembly rear end portion to said forwardly extending frame.
Claim 2
Dependent Claim
126 words
A canopy for a dual boom drill comprising, a mobile body having a horizontal platform, drill means, a forwardly extending frame pivotally mounted to said horizontal platform, a boom assembly having front end and rear end portions, said boom assembly rear end portion pivotally secured to said forwardly extending frame to permit movement of said drill means supported by said boom assembly front end portion in a vertical plane, a canopy assembly having front end and rear end portions maintained in overlying relationship with said forwardly extending frame, extensible means for moving said canopy assembly front end portion in a linear vertical path to a preselected height above said frame, and articulating means for connecting said canopy assembly rear end portion to said forwardly extending frame.
Claim 3
Dependent Claim
42 words
A canopy for a dual boom drill as set forth in claim 1 which includes, said articulating means operable to move said canopy assembly rear end portion longitudinally in a horizontal path parallel to the horizontal plane of said forwardly extending frame.
Claim 4
Dependent Claim
41 words
A canopy for a dual boom drill as set forth in claim 1 which includes, said canopy assembly rear end portion movably supported on said forwardly extending frame for longitudinal movement in a horizontal path upon extension of said extensible means.
Claim 5
Dependent Claim
60 words
A canopy for a dual boom drill as set forth in claim 1 which includes, said articulating means operable to move said canopy assembly rear end portion longitudinally in a linear horizontal path parallel to the horizontal plane of said frame and thereby permit said extensible means to move said canopy assembly front end portion in a linear vertical path.
Claim 6
Dependent Claim
28 words
A canopy for a dual boom drill as set forth in claim 1 in which, said canopy assembly front end portion is pivotally connected to said extensible means.
Claim 7
Dependent Claim
51 words
A canopy for a dual boom drill as set forth in claim 1 which includes, said canopy assembly front end portion having an integral laterally extending side portion adjacent said front end portion with an expanded metal screen secured in overlying relation with said side portion adjacent to said drill means.
Claim 8
Dependent Claim
37 words
A canopy for a dual boom drill as set forth in claim 1 which includes, ground stabilizing means for forcibly maintaining said frame immovable relative to said mobile car, said stabilizing means suitably mounted to said frame.
Claim 9
Dependent Claim
138 words
A canopy for a dual boom drill as set forth In claim 1 in which, said frame includes a pair of vertical sidewalls, each of said vertical sidewalls having an upper edge portion, said articulating means includes a roller positioned for rectilinear rotational movement in a plane parallel to the longitudinal axis of said frame on said upper edge portion, channel means for maintaining said roller rotatably engaged to said upper edge portion, a pair of parallel spaced arm members connected to said canopy assembly rear end portion and extending rearwardly therefrom, a bore extending transversely through each of said arm members, a shaft member coaxially secured to said roller and projecting outwardly therefrom, said shaft member arranged to extend through said bore, and fastening means for securing said arm member to said shaft member of said roller.
Claim 10
Dependent Claim
74 words
A canopy for a dual boom drill as set forth in claim 1 which includes, a pair of forwardly extending frames pivotally mounted in spaced relation to and extending forwardly from said horizontal platform, said frames pivotally arranged on said horizontal platform to move toward and away from each other, and said canopy assembly suitably connected to each of said frames so that said canopy assembly pivots in a horizontal plane with said frame.
Claim 11
Dependent Claim
37 words
A canopy for a dual boom drill as set forth in claim 1 in which, said extensible means includes adjustable means for maintaining said canopy assembly front end portion at a preselected vertical height above said frame.
Claim 12
Dependent Claim
117 words
A canopy for a dual boom drill as set forth in claim 10 in which said adjustable means includes, a pair of outer cylinders mounted in spaced vertical relation to said frame, each of said outer cylinders having a chamber therein, an inner cylinder concentrically arranged in each of said outer cylinder chambers, said inner cylinder having a chamber therein, a rod member movably positioned in said inner cylinder chamber and having an upper end portion extending outwardly therefrom, and connecting means for pivotally securing said rod member upper end portion to said canopy assembly front end portion to thereby permit said rod member to move said canopy assembly front end portion in a linear vertical path.
Claim 13
Dependent Claim
68 words
A canopy for a dual boom drill as set forth in claim 11 which includes, a plurality of vertically spaced bores passing transversely through said rod member, said inner cylinder having a transverse bore passing therethrough, and a pin member extending through said inner cylinder bore aligned with said rod bore to thereby retain said canopy assembly front end portion at a preselected vertical height above said frame.
References Cited (Backward Citations)
US2750155A
Cited
US2754087A
Cited
US3283831A
Cited
US3471888A
Cited
US3375880A
Cited
US3784159A
Cited
US3768574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |