US3619009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaling bar
Assignee: ROCK TOOLS Inc
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Filing: 1970-04-20
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Granted: 1971-11-09
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Expires: 1990-04-20
Abstract
Abstract A scaling bar for prying overhanging rock from mine tunnels and the like. An elongate, relatively thin-walled tube of lightweight material, such as aluminum, has an end closely fitted into engagement with and secured to one end of a relatively thickwalled coupling that is internally threaded at its other end for the reception of the externally threaded end of a scaling point. The tube and at least part of the sleeve coupling are covered with a resin-impregnated fiber glass that is bonded intimately thereto. Various forms of scaling points can be screwed into the coupling from time to time, each being secured in place by a lock nut on its shank. The opposite end of the tube is preferably provided with a similar coupling for the reception of a second scaling point, a handle, an adapter for a second tube, or merely a plug.
Inventors
- 👤 Paul C O'leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:52
CPC Classifications
E; E21; E21C; E21C37/00; E21C37/02; Y; Y10; Y10S; Y10S138/00; Y10S138/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
79 words
A scaling bar, comprising an elongate tube; a coupling having one end portion closely fitted into engagement with an end of said tube and the opposite end portion recessed to removably receive the shank of a scaling point; a jacket of resinimpregnated fiber glass covering and bonded to said tube and to at least the said one end portion of the coupling; and means for securing said shank within said coupling, said tube being thinwalled relative to said coupling.
Claim 2
Dependent Claim
79 words
A scaling bar, comprising an elongate tube; a coupling having one end portion closely fitted into engagement with an end of said tube and the opposite end portion recessed to removably receive the shank of a scaling point; a jacket of resinimpregnated fiber glass covering and bonded to said tube and to at least the said one end portion of the coupling; and means for securing said shank within said coupling, said tube being thinwalled relative to said coupling.
Claim 3
Dependent Claim
18 words
A scaling bar according to claim 1, wherein the tube is a length of strong but lightweight tubing.
Claim 4
Dependent Claim
34 words
A scaling bar according to claim 1, wherein the means for securing the shank of a scaling point within the coupling are screw tHreads formed internally of the said opposite end of the coupling.
Claim 5
Dependent Claim
20 words
A scaling bar according to claim 1, wherein the opposite end of the tube is provided with a similar coupling.
Claim 6
Dependent Claim
32 words
A scaling bar according to claim 1, wherein there is additionally included a scaling point having a shank removably inserted in and secured to the recessed opposite end portion of the coupling.
Claim 7
Dependent Claim
34 words
A scaling bar according to claim 5, wherein the recessed opposite end portion of the coupling is internally threaded and the shank of the scaling point is externally threaded to provide the securing means.
Claim 8
Dependent Claim
23 words
A scaling bar according to claim 6, wherein the securement means also includes a locknut carried by the external threading of the shank.
Claim 9
Dependent Claim
30 words
A scaling bar according to claim 6, wherein the shank has an elongate terminal portion that is unthreaded and closely fit within and extending along the bore of the tube.
Claim 10
Dependent Claim
48 words
A scaling bar according to claim 1, wherein the one end portion of the coupling is elongate and closely fitted within and extending along the bore of the tube, and wherein the opposite end portion is elongate and deeply recessed to receive the shank of a scaling tip.
Claim 11
Dependent Claim
77 words
A scaling bar according to claim 9, wherein there is additionally included a scaling point having a shank removably inserted in and secured to the recessed opposite end portion of the coupling with its end abutting the bottom of the recess; and wherein the securing means comprises mutually engaged screw threading internally of the recess and externally of the shank, and a locknut threaded onto the said shank and bearing against the adjacent end of the tube.
Claim 12
Dependent Claim
39 words
A scaling bar according to claim 10, wherein the one end portion of the coupling is of reduced diameter so the outside of the tube is substantially flush with the outside of the opposite end portion of the coupling.
Claim 13
Dependent Claim
30 words
A scaling bar according to claim 10, including a similar coupling at the opposite end of the tube and a handle similarly coupled to said opposite end of the tube.
Claim 14
Dependent Claim
21 words
A scaling bar according to claim 12, wherein the handle has an appended loop for the securement of a safety rope.
Claim 15
Dependent Claim
43 words
A scaling bar according to claim 10, including a similar coupling at the opposite end of the tube, and a similar tube similarly coupled to said opposite end of the tube by an adapter-connector to provide temporary extended length for said scaling bar.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |