Rotary shafts – gudgeons – housings – and flexible couplings for ro – Overload release coupling – Torque transmitted via a ball
Patent
1987-02-10
1988-09-06
Stodola, Daniel P.
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Overload release coupling
Torque transmitted via a ball
192 56R, F16D 706
Patent
active
047689919
ABSTRACT:
A slip clutch is provided with three rotatable members disposed in coaxial and concentric relationship with each other. A first rotatable member is provided with a groove in a first cylindrical surface and a second rotatable member is provided with a second groove in a second cylindrical surface. A spherical ball or, alternatively, a roller bearing is disposed in the first and second grooves at their point of intersection. A spline arrangement is provided between the second and third rotatable members to permit these members to move axially with respect to each other but to prevent relative rotational movement between the second and third rotatable members. A bias force is provided by a spring which exerts an axial force against the second rotatable member. The spring can be adjusted to cause a variation in the required torque necessary to cause slippage of the clutch mechanism. When relative torque is experienced between the first and second rotatable members, the spherical ball moves within the first and second grooves and the second rotatable member moves axially relative to the first rotatable member. This axial movement causes the spring to compress to achieve a balance between the force provided by the spring and the force provided by the relative torque between the first and second rotatable members. An extreme overtorque condition will cause the second rotatable member to continually reciprocate in an axial direction.
REFERENCES:
patent: 1883164 (1932-10-01), Vassakos
patent: 2268373 (1941-12-01), Cartlidge
patent: 3205985 (1965-09-01), Pearl
patent: 3797620 (1974-03-01), Haller
patent: 4075873 (1978-02-01), Geisthoff
patent: 4294340 (1981-10-01), Kunze
patent: 4557154 (1985-12-01), Iwata et al.
Lanyi William D.
Stodola Daniel P.
Sundstrand Corporation
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