公开(公告)号：US5007507A

公开(公告)日：1991-04-16

申请号：US362501

申请日：1989-06-07

申请人： Jeichienus van der Werff

发明人： Jeichienus van der Werff

IPC分类号： B62D5/02 ,  B65H1/18 ,  B65H31/18 ,  F16D13/08

CPC分类号： B65H31/18 ,  B62D5/02 ,  B65H1/18 ,  F16D13/08 ,  B65H2801/06 ,  B65H2801/09

摘要： 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.