Claims
- 1. A locking collar removal tool for removing a frangible fastener; the fastener having a threaded locked collar on a near end of a threaded shaft with wrench receiving means, a retaining ring at a far end of the fastener, the tool comprising:
- an outer cylinder having an outer gripping means, a threaded upper inner portion, a bottom inner tapered portion; the threaded upper inner portion counter threaded with respect to the locking direction of the collar to the shaft;
- an inner cylinder having a torque receiving means, a flat bottom rim, a threaded outer portion grooved to interact with the threaded upper inner portion of the outer cylinder;
- a collet with section removed to permit the collet to decrease in size and sized to surround said collar when open, the collet having a flat upper rim, an outer tapered bottom portion, the collet positioned within said outer cylinder below said inner cylinder urged through the inner tapered portion by the flat bottom rim of said inner cylinder thereby compressing the collar as the inner cylinder is torqued with respect to the outer cylinder in an opening direction.
- 2. A locked collar removal tool for removing a frangible fastener as described in claim 1 where the collet is made of a harden material having with memory.
- 3. A locked collar removal tool for removing a frangible fastener as described in claim 1 where the gripping means comprises a plurality of flexural assisting groves along the outer surface of said outer cylinder.
- 4. A locked collar removal tool for removing a frangible fastener as described in claim 1 where the outer gripping means comprises a plurality of outer faces to receive a wrench means.
- 5. A locked collar removal tool for removing a frangible fastener as described in claim 1 where the outer gripping means comprises a plurality of longitudinal indentations along the outer surface of said outer cylinder and a plurality of outer faces to receive a wrench means.
- 6. A locked collar removal tool for removing a frangible fastener as described in claim 1 where the torquing means comprises a plurality of outer faces to receive a wrench means.
- 7. A locked collar removal tool for removing a frangible fastener as described in claim 1 where the gripping means comprises a plurality of longitudinal indentations along the outer surface of said outer cylinder and a plurality of outer faces to receive a wrench means, the torquing means comprising a plurality of outer faces to receive a wrench means.
- 8. A locked collar removal tool for removing a frangible fastener as described in claim 1 where said collet has a plurality of inner oriented gripping teeth to interact with said collet.
- 9. The method of removing a frangible fastener having a threaded locked collar on a near end of a threaded shaft, a wrench receiving means at the near end, a retaining ring at a far end to hold a plurality of pieces together within said collar and retaining ring, the method comprising:
- placing a collet having a portion removed to enable said collet to surround the collar, the collet set within an outer cylinder with a inner tapered bottom portion and an upper inner threaded portion, having a slope direction contrary to the closing direction of the locked collar to the threaded shaft,
- while gripping the outer cylinder, torquing an inner cylinder having thread slopes matching the slope of the upper inner threaded portion of the outer cylinder, a bottom rim of the inner cylinder urging the collet through the inner tapered bottom thereby closing the collet upon the collar transferring torque upon the collar to rotate the locked collar from the threaded shaft.
- 10. The method of removing a frangible fastener as described in claim 9 further gripping the threaded shaft when rotating said inner cylinder.
Parent Case Info
The inventor claims benefit of the provisional co-pending patent application entitled LOCKING COLLAR REMOVAL TOOL, filed on Sep. 12, 1998, application No. 60/100,068.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5207130 |
Payne |
May 1993 |
|
6000300 |
Plamondon |
Dec 1999 |
|