公开(公告)号：US3807542A

公开(公告)日：1974-04-30

申请号：US28209072

申请日：1972-08-21

申请人： TELETYPE CORP

发明人： JUNG W

IPC分类号： B41J1/40 ,  B41J9/42

CPC分类号： B41J9/42

摘要： A spring having one end slidably engaging a pin extending from a retractable, motion inducing member, for example a print hammer in a printing apparatus, is rotatably mounted adjacent to a movable member, such as a type wheel. An intermediate portion of the spring is formed to contact and bear against the shaft of the type wheel so that when the print hammer is retracted, the spring is rotated about its mounting. This rotation results in the intermediate portion of the spring biasing the type wheel toward the print hammer. When the print hammer is brought into striking engagement with the type wheel, the pin on the print hammer moves thereby reducing the biasing action of the spring on the type wheel. Thus, the type wheel is free to move after being struck by the print hammer, but subsequent retraction of the print hammer applies a bias through the spring to suppress bouncing motion of the type wheel.