US3865197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective canopy for a portable drilling machine
Assignee: Tamrock World Corp NV
•
Filing: 1974-01-29
•
Granted: 1975-02-11
•
Expires: 1994-01-29
Abstract
Abstract A protective canopy framework having front and rear end portions is positioned adjacent the drill boom of a portable drilling machine carried on a mobile body portion. An expanded metal screen covers substantially the entire surface area of the canopy framework. Pairs of front and rear vertical post members are secured at their lower end portions to an extension of the body portion. Elongated cylindrical members, arranged to extend outwardly from the top of each post member, support the canopy framework. The cylindrical members are operable by manual adjustment to raise the canopy framework in a vertical plane to a preselected height above the body portion and maintain the canopy framework immovable relative thereto. A hydraulic lift jack connected to a pair of arm members that are pivotally mounted to the body portion engages the mine floor and is operable upon actuation to pivot the canopy front end portion from a substantially horizontal position about the rear end portion into position adjacent the mine roof surface. In another embodiment, a pair of adjustable link plates connect the canopy rear end portion to the body portion. The link plates are arranged to selectively raise the rear end portion in a vertical plane above the body portion. The protective canopy framework positioned adjacent the mine roof surface protects the drill operator from the hazard of falling rock material and collapse of the mine roof during the drilling operations.
Inventors
- 👤 Thomas W Mccormick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:14
CPC Classifications
E; E21; E21D; E21D19/00; E21B; E21B7/00; E21B7/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
141 words
The combination of a drill boom and a protective canopy comprising, a wheeled body portion having a frame, drill means, said drill boom positioned forwardly of said wheeled body portion and operable to move said drill means in a vertical plane relative to said frame, said protective canopy secured to said frame and positioned adjacent said drill boom, said protective canopy having front end and rear end portions arranged for vertical movement relative to said frame and a metal covering positioned on the top surface of said protective canopy, vertical adjusting means for selectively moving said canopy in a vertical plane relative to said frame, extensible means for pivoting said canopy front end portion about said canopy rear end portion, and support means for retaining said extensible means fixed relative to said frame to thereby provide vertical movement of said canopy.
Claim 2
Dependent Claim
141 words
The combination of a drill boom and a protective canopy comprising, a wheeled body portion having a frame, drill means, said drill boom positioned forwardly of said wheeled body portion and operable to move said drill means in a vertical plane relative to said frame, said protective canopy secured to said frame and positioned adjacent said drill boom, said protective canopy having front end and rear end portions arranged for vertical movement relative to said frame and a metal covering positioned on the top surface of said protective canopy, vertical adjusting means for selectively moving said canopy in a vertical plane relative to said frame, extensible means for pivoting said canopy front end portion about said canopy rear end portion, and support means for retaining said extensible means fixed relative to said frame to thereby provide vertical movement of said canopy.
Claim 3
Dependent Claim
100 words
The combination of a drill boom and a protective canopy as set forth in claim 1 in which each said vertical adjusting means includes, a vertical post member having an axial passageway therethrough, said vertical post member rigidly secured at the lower end thereof to said frame, an elongated cylindrical member, said cylindrical member positioned for axial movement in said axial passageway, said cylindrical member suitably connected at the top end portion thereof to said canopy, and adjustable means for retaining said cylindrical member supporting said protective canopy at a preselected height above said frame immovable within said axial passageway.
Claim 4
Dependent Claim
109 words
The combination of a drill boom and a protective canopy as set forth in claim 2 in which each of said adjustable means includes, said vertical tubular member provided with a bore passing transversely therethrough, said bore positioned adjacent the upper end portion of said tubular member, said cylindrical member provided with a plurality of vertically spaced bores passing transversely therethrough, and a post pin arranged to pass through said bore of said tubular member aligned with a selected bore of said cylindrical member to retain said cylindrical member immovable relative to said tubular members so that said protective canopy is maintained at a predetermined height above said frame.
Claim 5
Dependent Claim
182 words
The combination of a drill boom and a protective canopy as set forth in claim 1 in which said extensible means includes, a hollow outer cylinder pivotally mounted at the lower end portion thereof to said frame, said outer cylinder having an open upper end portion, an intermediate cylinder positioned concentrically within said hollow outer cylinder, said intermediate cylinder having an axial chamber therethrough and an upper end portion extending above said outer cylinder open upper end portion, an annular passageway provided between said outer cylinder and said intermediate cylinder, an annular sleeve member having a bore therethrough, said annular sleeve member securely positioned in said annular passageway to sealingly close said outer cylinder open upper end portion, and a rod member arranged for slidable movement within said intermediate cylinder axial chamber extends outwardly from said intermediate cylinder, said rod member pivotally connected at the upper end portion thereof to said protective canopy, said rod member operable to extend and retract from said intermediate cylinder and thereby raise and lower said canopy front end portion relative to said canopy rear end portion.
Claim 6
Dependent Claim
78 words
The combination of a drill boom and a protective canopy as set forth in claim 4 which includes, said rod member having a transverse bore passing through the upper end portion thereof, said intermediate cylinder having a transverse bore passing through said upper end portion thereof, and a locking pin arranged to pasS through the aligned bores of said intermediate cylinder and said solid rod to thereby maintain said solid rod immovable within said intermediate cylinder longitudinal chamber.
Claim 7
Dependent Claim
86 words
The combination of a drill boom and a protective canopy as set forth in claim 4 in which said annular sleeve member includes, an annular recessed portion, sealing means positioned in said annular recessed portion and surrounding said intermediate cylinder extending through said hollow outer cylinder, and said sealing means arranged to permit extension and retraction of said rod member in said intermediate cylinder axial chamber and thereby provide a fluid and pressure-tight seal between said outer cylinder and said intermediate cylinder in said annular passageway.
Claim 8
Dependent Claim
145 words
The combination of a drill boom and a protective canopy as set forth in claim 1 in which said support means includes, a cylindrical member suitably mounted to said frame, said cylindrical member having a chamber therein, a rod member positioned axially in said chamber and arranged for axial movement therein, said rod member having a bottom tip portion, a pair of arm members having rear portions pivotally connected to said frame and front portions pinned to said rod member bottom tip portion, means for moving said elongated rod axially downwardly in said chamber so that said arm members pivot about said rear portions with said front portions contacting the mine floor to thereby rigidly brace said frame, and means for urging said elongated rod upwardly in said chamber to thereby release said front portions of said arm members from contact with the mine floor.
Claim 9
Dependent Claim
88 words
The combination of a drill boom and a protective canopy as set forth in claim 7 which includes, said cylindrical member having an open top portion and a sealed bottom portion, said sealed bottom portion having an opening therein, a cylindrical disc positioned in said open top portion for axial movement in said chamber, said cylindrical disc having a central bore therethrough aligned with said opening in said sealed bottom portion, and said rod member arranged to pass through said disc central bore and said cylindrical member opening.
Claim 10
Dependent Claim
108 words
The combination of a drill boom and a protective canopy as set forth in claim 8 which includes, a helical compression spring positioned in said chamber concentrically around said rod member, said helical compression spring having a top portion maintained in abutting contact with said cylindrical disc and a bottom portion maintained in contact with said cylindrical member sealed bottom portion, said helical compression spring compressed by said cylindrical disc moving downwardly through said chamber with said rod member, and said helical compression spring operable to extend to the original uncompressed length thereof and thereby urge said cylindrical disc together with said rod member upwardly through said chamber.
Claim 11
Dependent Claim
108 words
The combination of a drill boom and a protective canopy as set forth in claim 1 in which said protective canopy includes, a forwardly extending portion positioned adjacent said drill boom assembly, an intermediate portion formed integral with said forwardly extending portion, said intermediate portion suitably linked to said extensible means, a rearwardly extending portion pivotally connected to said vertical adjusting means, said extensible means operable to move said forwardly extending portion and said intermediate portion angularly relative to said rearwardly extending portion, and an expanded metal screen covering substantially the entire top surface area of said forwardly extending portion, said intermediate portion and said rearwardly extending portion.
Claim 12
Dependent Claim
74 words
The combination of a drill boom and a protective canopy as set forth in claim 10 which includes, said intermediate portion having a pair of parallel spaced side rails, a transverse beam member connecting said side rails to saId forwardly extending member, and said extensible means pivotally connected to said transverse beam member, said extensible means operable to vertically move said transverse beam member together with said forwardly extending member and said side rails.
Claim 13
Dependent Claim
93 words
The combination of a drill boom and a protective canopy as set forth in claim 4 wherein, said rearwardly extending portion includes a pair of parallel spaced arm members, said spaced arm members suitably connected at one end portion thereof to said pair of spaced side rails, a transverse shaft connecting said arm members at the other end thereof for pivotal movement, and adjustable link means for raising said rearwardly extending portion in a vertical plane relative said frame, said adjustable link means arranged to connect said spaced arm member to said frame.
Claim 14
Dependent Claim
147 words
The combination of a drill boom and a protective canopy as set forth in claim 12 in which said adjustable link means includes, a pair of laterally spaced plate members, each positioned adjacent one of said spaced arm members, bolt means for securing said plate members to said frame, said bolt means adjustable on said frame to selectively position said plate member rear portion vertically above said frame, said plate members pivotally connected at the front portion thereof to the front portion of said spaced arm members, said plate members provided with aligned bores passing through the rear portion thereof, said transverse shaft arranged to pass through said aligned bores of said plate members, a tubular sleeve member having a longitudinal bore therethrough, and said sleeve member concentrically supported by said transverse shaft and passing through said longitudinal bore for maintaining said plate members in spaced relation.
Claim 15
Dependent Claim
67 words
The combination of a drill boom and a protective canopy as set forth in claim 13 in which, said spaced arm members pivot about said transverse shaft as said extensible means vertically raise said transverse beam together with said forwardly extending portion, said spaced arm members arranged to pivot on said transverse shaft with each of said plate members rear portions suitably positioned vertically above said frame.
References Cited (Backward Citations)
US2750155A
Cited
US2754087A
Cited
US3319727A
Cited
US3283831A
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |