Machine element or mechanism – Elements – Cranks and pedals
Patent
1989-10-02
1993-11-16
Friedman, Carl D.
Machine element or mechanism
Elements
Cranks and pedals
745943, 280260, B62M 302
Patent
active
052612945
ABSTRACT:
A crank mechanism is provided which has a first driven member constituted by a first shaft, and a second driven member constituted by a sleeve member-disposed around said first shaft. The sleeve member is retained in support means such that the sleeve member and the first shaft can rotate relatively to one another. A rotating arm is connected to the sleeve member, and attachment means is slidable along said rotating arm. First linkage means is provided between said attachment means and said first shaft, and second linkage means is provided between said sleeve member and said first shaft, whereby said attachment means can selectively describe any of a range of circular or elliptical paths. In the preferred embodiment, the linkage means are adjustable and include a counter-rotating arm associated with said first shaft, and a second shaft and a third shaft and gears associated therewith and with said first shaft, which gears transmit rotational movement from said first shaft to said sleeve member. The invention is easily adaptable for physical therapy applications and for use as a drive mechanism for a bicycle.
REFERENCES:
patent: 602536 (1898-04-01), Bassett
patent: 602842 (1902-06-01), Williams
patent: 642410 (1900-01-01), Young
patent: 3789696 (1974-02-01), Beam, III
patent: 3865366 (1975-02-01), Stantial
patent: 3888136 (1975-06-01), Lapeyre
patent: 4029334 (1977-06-01), Trammell, Jr.
patent: 4159652 (1979-07-01), Trammel, Jr.
patent: 4173154 (1979-11-01), Sawmiller et al.
patent: 4193324 (1980-03-01), Marc
patent: 4249424 (1981-02-01), Glazier
patent: 4706516 (1987-11-01), Xi
patent: 4721015 (1988-01-01), Hartmann
patent: 4809970 (1989-03-01), Beistegni
patent: 4882945 (1989-11-01), Trevizo
Farney Michael K.
Ticer Joseph D.
A.E.C. Pre-Patent Partnership
Friedman Carl D.
Holland J. Mark
Mahoney Thomas P.
Yip Winnie
LandOfFree
Adjustable elliptical crank mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable elliptical crank mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable elliptical crank mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-15506