Crank device

Details Crank device Crank device

1994-07-14

1996-10-22

Marmor, Charles A.

Machine element or mechanism

Elements

Cranks and pedals

74 32, G05G 114

Patent

active

055665900

ABSTRACT:
A crank device can produce a large torque without increasing the locus of the crank arm. The crank arm has first and second arms which are longitudinally slidably coupled together through a pinion. The second arm is formed with two sets of rack teeth on both sides of the pinion. The pinion has along its circumference a plurality of teeth which are adapted to alternately come into meshing engagement with the respective sets of rack teeth every time the crank arm makes a half turn in the same direction. Thus, the entire length of the crank arm alternately becomes maximum and minimum every time the crank arm turns by 180.degree.. By applying a driving force to the crank arm when the length of the crank arm is maximum, it is possible to produce a large torque.

REFERENCES:
patent: 558516 (1896-04-01), Pedersen
patent: 1703497 (1929-02-01), Noah
patent: 1818313 (1931-08-01), Everts
patent: 3888136 (1975-06-01), Lapeyre
patent: 4882945 (1989-11-01), Trevizo
patent: 5207119 (1993-05-01), Garneau

Affiliated with

Also associated with

Rating

Crank device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2351158