Bicycle crank arm puller

Details Bicycle crank arm puller Bicycle crank arm puller

1993-10-18

1994-12-06

Watson, Robert C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

B23P 1904

Patent

active

053698630

ABSTRACT:
A bicycle crank arm puller includes a tubular insert externally threaded for threaded engagement in an internally threaded portion of a bore in a crank arm, the other portion of the bore receiving an axle end in press-fitted engagement. The insert has an enlarged, radially outwardly extending, trilobular handle. A drive screw is threadedly engaged through the tubular insert and has a part-spherical bearing end engageable with the axle end. A square drive socket on the outer end of the drive screw receives the drive lug of an associated lever member.

REFERENCES:
patent: 1468334 (1921-02-01), Thomason
patent: 1505232 (1924-08-01), Trautner
patent: 1782303 (1930-11-01), Imlach
patent: 2467982 (1949-04-01), Manis
patent: 4207664 (1980-06-01), Zoula
patent: 4551898 (1985-11-01), Provost
patent: 4694569 (1987-09-01), Colvell et al.
patent: 5054163 (1991-10-01), Sterling et al.
patent: 5099726 (1993-03-01), Hsiao
Photographs of Park Tools part No. CCP-1.
Photographs of Campagnolo crank arm puller tool.

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