1975-07-28
1976-06-08
Scott, Samuel
64 18, F16D 330
Patent
active
039614972
ABSTRACT:
The joint includes first and second parts, each of which is operatively connected to a different one of two shafts. The parts are relatively movable about a given point in accordance with the angular movement of the shafts relative to each other and are rotatable in accordance with the rotation of the shafts. Each of the parts comprises a pair of radially spaced arcuate fingers which mesh with the corresponding fingers of the other part. One of the fingers on each part is provided with a slot. The slots align radially when the fingers mesh. A pin is provided, extending through the slots to connect the parts for simultaneous rotation and to permit relative movement between the pin and the parts, respectively. The other finger on each part is provided with a gear rack. A beveled idler gear, mounted on the pin, meshes with the gear racks simultaneously and is rotatable as the parts and thus the racks are moved relative to each other. The degree of rotation of the gear is a function of the movement between the parts and causes the pin to move relative to the parts. This movement maintains the pin at a position equally distant from the axes of the shafts. As long as this position is maintained, torque is transmitted from one shaft to another at uniform angular velocity, regardless of the angular position of the shafts relative to each other.
REFERENCES:
patent: 1626270 (1927-04-01), Craun
patent: 1728949 (1929-09-01), Weiss
patent: 2584648 (1952-02-01), Welsh
Heald Randall
Scott Samuel
Sphero International Company
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