Claims
- 1. A climbing aid for providing a removable anchor in a crack in a rock formation disposed for having the safety rope of the climber clipped thereto, said climbing aid comprising:
- a wedge-shaped chock having two broad faces, two narrow sides, and a thick and a thin end;
- anchor cable means having one end affixed to the thin end of the chock and defining an anchor loop at the other end disposed for clipping to the safety rope;
- cylindrical roller means adjacent one broad face of the chock for effectively varying the overall thickness of the climbing aid;
- spring means for maintaining the roller adjacent the face of, and biasing the roller toward the thick end of, the chock; and
- secondary cable means for manually drawing the roller down the face of the chock to reduce the overall thickness of the climbing aid to facilitate its placement in or withdrawal from the crack in the rock.
- 2. A climbing aid as in claim 1 wherein the two broad faces of the chock are planar.
- 3. A climbing aid as in claim 1 wherein:
- said chock defines two cylindrical channels therethrough between the thick and thin ends; and
- said anchor cable means includes a single length of cable threaded through both channels in the chock and extending away from the thin end of the chock and a cable clamp connecting the free ends of the cable on to the other to define the anchor loop.
- 4. A climbing aid as in claim 1 wherein said spring means includes:
- two pair of mounting pins, one affixed to each side of the chock near its thick end and one each affixed to each end of the roller; and
- a pair of coil springs, each spring joining the mounting pins on the adjacent side and end of the chock and roller.
- 5. A climbing aid as in claim 4 wherein said secondary cable means includes:
- a bail connected between the mounting pins affixed to the ends of the roller;
- a release cable having one end connected centrally to the bail; and
- a ring affixed to the other end of the release cable, the ring being dimensioned to receive at least one finger of the climber.
- 6. A climbing aid as in claim 5 wherein said secondary cable means further includes means for dressing the release cable along anchor cable means while allowing free movement of the secondary cable along its length.
- 7. A climbing aid as in claim 3 further includes means for preventing the chock from slipping on the cable of the anchor cable means.
- 8. A climbing aid as in claim 3 wherein the two broad faces of the chock are planar.
- 9. A climbing aid as in claim 4 wherein the two broad faces of the chock are planar.
- 10. A climbing aid as in claim 5 wherein the two broad faces of the chock are planar.
- 11. A climbing aid as in claim 7 wherein the two broad faces of the chock are planar.
- 12. A climbing aid as in claim 3 wherein said spring means includes:
- two pair of mounting pins, one affixed to each side of the chock near its thick end and one each affixed to each end of the roller; and
- a pair of coil springs, each spring joining the mounting pins on the adjacent side and end of the chock and roller.
- 13. A climbing aid as in claim 1 wherein the chock further includes a lip formed along the thick end edge of the broad face thereof to which the roller is adjacent.
- 14. A climbing aid as in claim 2 wherein the chock further includes a lip formed along the thick end edge of the broad face thereof to which the roller is adjacent.
- 15. A climbing aid as in claim 4 wherein the chock further includes a lip formed along the thick end edge of the broad face thereof to which the roller is adjacent.
Parent Case Info
This is a continuation-in-part of application Ser. No. 713,020 filed Mar. 18, 1985, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3903785 |
Pepper, Jr. |
Sep 1975 |
|
4572464 |
Phillips |
Feb 1986 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
0047232 |
Oct 1982 |
EPX |
2911952 |
Oct 1980 |
DEX |
2440206 |
Jul 1980 |
FRX |
Non-Patent Literature Citations (1)
Entry |
Royal Robbins, Advanced Rockcraft, 1973, pp. 15-33. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
713020 |
Mar 1985 |
|