US4398850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof bolter and process
Assignee: Cooper Range Co
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Filing: 1981-02-09
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Granted: 1983-08-16
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Expires: 2001-02-09
Abstract
Abstract Roof bolter and process for resin bolting a mine roof. The roof bolter comprises combined means for drilling and resin inserting in one position, means for bolt inserting in a second position, and means for positioning the roof bolter first into one and then into its second positions. The process comprises drilling a hole in the mine roof and inserting in tandem resin into the hole and, inserting into and securing a bolt within the hole. Preferably, the roof bolter and the process are automated and remotely controlled. The invention further includes a device designed for attachment to a three-position resin type roof bolter and for converting it to a two-position resin type roof bolter.
Inventors
- 👤 Robert D. Talvensaari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:27
CPC Classifications
E; E21; E21D; E21D20/00; E21D20/003; E21D20/006
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
76 words
A two-position resin type roof bolter with a single indexing between said two positions comprising: (a) combined means for drilling and resin inserting in one position of said roof bolter without indexing between said drilling and said resin inserting; (b) means for bolt inserting in a second position of said roof bolter after said single indexing thereof; and (c) means for positioning said roof bolter, first into said one and then into its said second positions.
Claim 2
Dependent Claim
76 words
A two-position resin type roof bolter with a single indexing between said two positions comprising: (a) combined means for drilling and resin inserting in one position of said roof bolter without indexing between said drilling and said resin inserting; (b) means for bolt inserting in a second position of said roof bolter after said single indexing thereof; and (c) means for positioning said roof bolter, first into said one and then into its said second positions.
Claim 3
Dependent Claim
28 words
The two-position resin type roof bolter of claim 1 wherein said combined means includes a device having two converging passages: a drilling passage and a resin injection passage.
Claim 4
Dependent Claim
49 words
The two-position resin type roof bolter of claim 2 wherein said device comprises a housing block and at least one nozzle mounted on said block, said drilling passage being concentric with said nozzle, said resin injection passage connecting with said drilling passage at an angle and below said nozzle.
Claim 5
Dependent Claim
67 words
The two-position resin type roof bolter of claim 3 wherein said nozzle is provided with an inner bushing having an inside diameter somewhat larger than the inside diameter of said resin injection passage, and wherein said housing is formed with a tapped portion and said nozzle is formed with an externally threaded portion meshing with said tapped portion, whereby said nozzle is removably mounted to said housing.
Claim 6
Dependent Claim
21 words
The two-position resin type roof bolter of claim 3 wherein said angle of connection between said converging passages is about 30°.
Claim 7
Dependent Claim
36 words
The two-position resin type roof bolter of claim 3 wherein said housing block is further provided with a vent radially communicating with said drilling passage at a point below the confluence of said two converging passages.
Claim 8
Dependent Claim
39 words
The two-position resin type roof bolter of claim 4 wherein said resin inserting passage is formed with an internal shoulder to facilitate the attachment thereto of a pneumatic hose to introduce a resin cartridge into said resin inserting passage.
Claim 9
Dependent Claim
35 words
The two-position resin type roof bolter of claim 3 wherein said housing block is further provided with a protective solid ring member concentrically surrounding said nozzle and extending from said housing block beyond said nozzle.
Claim 10
Dependent Claim
37 words
The two-position resin type roof bolter of claim 1 further including a boom supporting said roof bolter at one end and communicating with means at its other end for providing remote control operation to said roof bolter.
Claim 11
Dependent Claim
22 words
The two-position resin type roof bolter of claim 9 wherein said means providing remote control operation to said roof bolter is automated.
Claim 12
Dependent Claim
74 words
A process for resin bolting a mine roof comprising: (a) positioning a turret into a drilling position with respect to said mine roof; (b) drilling a hole with said turret in said mine roof; (c) without re-positioning said turrent, inserting a resin cartridge with said turret into said hole; and (d) positioning said turret into a bolt inserting position with respect to said hole and inserting a bolt with said turret into said hole.
Claim 13
Dependent Claim
74 words
A process for resin bolting a mine roof comprising: (a) positioning a turret into a drilling position with respect to said mine roof; (b) drilling a hole with said turret in said mine roof; (c) without re-positioning said turrent, inserting a resin cartridge with said turret into said hole; and (d) positioning said turret into a bolt inserting position with respect to said hole and inserting a bolt with said turret into said hole.
Claim 14
Dependent Claim
13 words
The process of claim 11 wherein said process is a fluid actuated process.
Claim 15
Dependent Claim
11 words
The process of claim 11 wherein said process is remotely controlled.
Claim 16
Dependent Claim
10 words
The process of claim 11 wherein said process is automated.
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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) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |