Patent US3903785A successfully refreshed from Google Patents.
US3903785A
Expired / Lapsed
US
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Rock climbing anchor
Assignee: Individual
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Filing: 1974-06-24
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Granted: 1975-09-09
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Expires: 1994-06-24
Abstract
Abstract An anchor comprises a sliding wedge, two coacting outer parts which are forced apart by the wedge, and a loop of cable that transmits the load to the wedge. The cable passes through all three parts. The outer parts have mating flanges that keep them parallel to each other. The climber places the anchor in a crack in the rock and expands it by pulling on the cable loop. In one embodiment of the invention, an opening between the outer parts allows insertion of a tool to dislodge the wedge so the anchor can be removed; in another embodiment an extension of the wedge protrudes through this opening to obviate the need for a tool.
Inventors
- 👤 Jr William Pepper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:11
CPC Classifications
A; A63; A63B; A63B29/00; A63B29/02; A63B29/024; F; F16; F16B; F16B2/00; F16B2/02; F16B2/04; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3969; Y10T24/3978
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A rock anchor consisting of an inner wedge-shaped expander, two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, and a cable that transmits the load to said expander, said expander and outer parts being retained and carried by said cable.
Claim 2
Dependent Claim
47 words
A rock anchor consisting of an inner wedge-shaped expander, two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, and a cable that transmits the load to said expander, said expander and outer parts being retained and carried by said cable.
Claim 3
Dependent Claim
40 words
A rock anchor as described in claim 1 with said expander and outer parts retained on said cable in such a way that the expander cannot be pulled out from between the outer parts by a load on the cable.
Claim 4
Dependent Claim
72 words
A rock anchor consisting of an inner wedge-shaped expander, two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, and a cable that transmits the load to said expander, said expander and outer parts being retained and carried by said cable, an aperture in the front of the assembled anchor to allow insertion of a tool to dislodge said expander and permit removal of the anchor.
Claim 5
Dependent Claim
72 words
A rock anchor consisting of an inner wedge-shaped expander, two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, and a cable that transmits the load to said expander, said expander and outer parts being retained and carried by said cable, an aperture in the front of the assembled anchor to allow insertion of a tool to dislodge said expander and permit removal of the anchor.
Claim 6
Dependent Claim
73 words
A rock anchor consisting of an inner wedge-shaped expander, two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, and a cable that transmits the load to said expander, said expander and outer parts being retained and carried by said cable with an extension of said expander protruding in the front of the assembled anchor to provide a means for dislodging the expander to remove the anchor.
Claim 7
Dependent Claim
73 words
A rock anchor consisting of an inner wedge-shaped expander, two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, and a cable that transmits the load to said expander, said expander and outer parts being retained and carried by said cable with an extension of said expander protruding in the front of the assembled anchor to provide a means for dislodging the expander to remove the anchor.
Claim 8
Dependent Claim
108 words
A rock anchor consisting of an inner wedge-shaped expander, a cable that transmits the load to said expander, and two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, said expander and outer parts being retained and carried by said cable said outer parts each being provided with protrusions extending substantially perpendicular to the plane bisecting the angle between said inclined surfaces of said two outer parts, said protrusions mating with the protrusions on the other outer part so as to maintain alignment of the outer parts parallel to the direction of movement taken by said expander in expanding the rock anchor.
Claim 9
Dependent Claim
108 words
A rock anchor consisting of an inner wedge-shaped expander, a cable that transmits the load to said expander, and two separate outer parts each having an inclined surface for mating cooperation with said expander therebetween, said expander and outer parts being retained and carried by said cable said outer parts each being provided with protrusions extending substantially perpendicular to the plane bisecting the angle between said inclined surfaces of said two outer parts, said protrusions mating with the protrusions on the other outer part so as to maintain alignment of the outer parts parallel to the direction of movement taken by said expander in expanding the rock anchor.
Claim 10
Dependent Claim
39 words
A rock anchor as described in claim 5, with said protrusions on one of said outer parts dovetailing with said protrusions on the other outer part so as to maintain alignment of the outer parts parallel to each other.
Claim 11
Dependent Claim
24 words
A rock anchor as described in claim 5, said outer parts also being provided with stops to limit their travel away from each other.
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |