Flexible crank drive

Details Flexible crank drive Flexible crank drive

1990-03-05

1991-10-29

Lindsey, Rodney M.

Machine element or mechanism

Elements

Cranks and pedals

74581, 745943, G05G 114

Patent

active

050605364

ABSTRACT:
A bicycle crank has flexible crank arms designed to deflect elastically under the influence of force on the pedals, allowing the point of application of force to advance relative to the rotational position of the sprocket device. In a preferred embodiment the crank arms are made of glass fiber-reinforced epoxy, and have a generally rectangular cross section.

REFERENCES:
patent: 518456 (1894-04-01), Ide
patent: 584809 (1899-06-01), Anthony
patent: 620164 (1899-02-01), Mumford et al.
patent: 621883 (1899-03-01), Whitney et al.
patent: 1323004 (1919-11-01), Boyd
patent: 2316530 (1943-04-01), Nilsen
patent: 3779099 (1973-12-01), Trammell
patent: 4009623 (1977-03-01), Smith et al.
patent: 4583422 (1986-04-01), Boyd
patent: 4898047 (1990-02-01), Cropek

Affiliated with

Also associated with

Rating

Flexible crank drive does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flexible crank drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible crank drive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1391935