Brakes – Wheel – Transversely movable
Patent
1989-06-07
1991-04-16
Huppert, Michael S.
Brakes
Wheel
Transversely movable
271160, 271217, 192 33C, F16D 5104, B65H 3110, B65H 110
Patent
active
050075071
ABSTRACT:
A method of, and a device for, controlling the rotation of an element about an axis are disclosed. A continuous torque is exerted on the element to rotate it in one direction, and a control member engages with one end of a wrap spring, which extends around a cylindrical part of the element, to preclude rotation of the element when the control member is in a first position. When the control member is out of the first position, the wrap spring loosens about the cylindrical element, thereby allowing the element to rotate under the continuous torque. However, rotation of the element under the continuous torque indirectly causes the control member to return to the first position, thus preclouding further rotation of the element.
REFERENCES:
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patent: 4278032 (1981-07-01), Kritske
patent: 4457406 (1984-07-01), Porter
patent: 4600240 (1986-07-01), Suman et al.
DeRosa Kenneth R.
Hadewe B.V.
Huppert Michael S.
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