Crank with clutch and coupler

Details Crank with clutch and coupler Crank with clutch and coupler

2005-08-16

2009-10-27

Luong, Vinh T. (Department: 3656)

Machine element or mechanism

Elements

Cranks and pedals

C074S143000, C192S048600, C192S069620, C192S11400R

Reexamination Certificate

active

07607370

ABSTRACT:
A crank including a mechanism capable of connecting the crank arm to a shaft to drive the shaft in rotation in either a unidirectional drive mode or a bidirectionally driving mode, the mechanism being quickly adjustable between modes. A coupler in the mechanism may be slidable between a first position engaging the crank arm with a hub portion fixedly mounted on the shaft and a second position in which a unidirectional clutch can operate to allow rotation of the crank arm freely about the shaft in one direction but cause rotation of the shaft in the opposition direction. The coupler may be arranged to be coupled only when the shaft is in a selected angular position.

REFERENCES:
patent: 1433259 (1922-10-01), Coffield
patent: 2130581 (1938-09-01), Case
patent: 3198304 (1965-08-01), Rosenblum
patent: 3515250 (1970-06-01), Cantalupo
patent: 3994509 (1976-11-01), Schaeffer
patent: 4303255 (1981-12-01), Thomas
patent: 5322312 (1994-06-01), Cammack
patent: 5390773 (1995-02-01), Proia
patent: 5540111 (1996-07-01), Barnett et al.
patent: 5860329 (1999-01-01), Day
patent: 6705443 (2004-03-01), Kettler et al.
patent: 6893035 (2005-05-01), Watwood et al.
patent: 2005/0173218 (2005-08-01), Walther et al.
patent: 2006/0094569 (2006-05-01), Day
patent: 2000-43779 (2000-02-01), None
patent: PCT/CH03/00340 (2003-12-01), None
Smart Cranks—Nine (9) photographs of cranks, with unidirectional clutches and locking mechanisms in their hubs, that were publicly available at least as early as Jun. 1, 2005.
Smart Cranks Installation, Maintenance, Training—four (4) pages of instructions downloaded from website www.smartcranks.com on Jun. 20, 2006, SmartCranks GmbH, Zug, Switzerland.

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