Joints and connections – Articulated members – Pivoted
Patent
1973-03-05
1976-01-13
Schroeder, Werner H.
Joints and connections
Articulated members
Pivoted
74 89, 74 22, 308 6, F16C 1100, F16C 3202, F16D 112, F16D 300
Patent
active
039320456
ABSTRACT:
An apparatus is disclosed for a rolling contact joint that is particularly useful as a prosthetic joint such as a knee joint, as well as other applications requiring relatively movable sections having mechanical joints. The joint may take a variety of forms depending upon the particular situation, but in essence, includes at least two bodies that have surface portions in contact, with the bodies being movable relative to one another and constrained in this movement by the nature of the surfaces in contact and flexible straps positioned about and also in contact with the bodies. Where a basic configuration including a pair of cylinders is utilized, the flexible straps may be wrapped completely or partially around each of the cylinders to provide a joint having substantially no restraint of motion with very low friction due to the rolling contact between the contacting surfaces of the cylinders. In addition, such bodies may each have a pair of cylindrical surfaces of different diameter with respect to one another with the bodies in contact at one cylindrical surface and the flexible straps wrapped about the other of the cylindrical surfaces. If the cylindrical surfaces are concentric with respect to one another and have diameters of proper ratio, there will be no substantially resistance to the motion, and because of the rolling contact, friction will be very low. If the cylindrical surfaces are not concentric, however, then the flexible straps will be strained during rotation and a spring action will be provided in the device. Since the shape of the bodies and the positioning of the flexible straps determines the particular type of motion, various possible combinations have been described. In addition, a particular embodiment of a rolling contact joint is described for use as a prosthetic knee joint.
REFERENCES:
patent: 752778 (1904-02-01), Hundhausen
patent: 2564041 (1951-08-01), Vogel
patent: 3452175 (1969-06-01), Wilkes
patent: 3452309 (1969-06-01), Wilkes
patent: 3471668 (1969-10-01), Wilkes
patent: 3640482 (1972-02-01), Von Hippel
patent: 3643049 (1972-02-01), Lu Conic et al.
patent: 3739648 (1973-06-01), Payst
patent: 3810689 (1974-05-01), Moodie
mechanical Engineering Magazine, Apr. 1968, pp. 11-29.
Hall, Jr. Allen S.
Hillberry Benny M.
Purdue Research Foundation
Schroeder Werner H.
Shedd Wayne L.
LandOfFree
Rolling contact joint does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rolling contact joint, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rolling contact joint will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-743549