公开(公告)号：US3916722A

公开(公告)日：1975-11-04

申请号：US51559274

申请日：1974-10-17

Applicant: SQUARE D CO

Inventor： GROBE DONALD F

IPC: G05G1/30 ,  G05G1/44 ,  G05G5/02 ,  H01H21/26 ,  G05G1/14

CPC classification number: G05G1/30 ,  G05G1/44 ,  G05G5/02 ,  H01H21/26 ,  Y10T74/20528 ,  Y10T74/20888

Abstract: A foot control of the treadle operated type has a latching mechanism which normally latches the treadle in an inoperative position and which must be released before the treadle can be moved to an operative position. The latch mechanism includes a latch plate which, as the latch mechanism is being set to latch the treadle in its inoperative position, is moved to a restricting position wherein it restricts access to the treadle by the foot of an operator or by a foreign object. The latch plate is yieldably constrained to restricting position after the latch mechanism is set, and must be moved out of its restricting position to re-establish free access to the treadle and release the latch mechanism. The direction in which the latch plate must be moved for moving it out of its restricting position is opposite from the direction in which the treadle must be moved to reach its operative position.

Abstract translation: 踏板操作型的脚踏控制具有闩锁机构，该闩锁机构通常将踏板锁定在不工作的位置，并且必须在脚踏板移动到操作位置之前将其释放。 闩锁机构包括闩锁板，当闩锁机构被设置成将踏板锁定在其不工作位置时，闩锁板被移动到限制位置，其中限制位置由操作者的脚或异物进入脚踏板。 闩锁板可靠地限制在锁定机构设置之后的限制位置，并且必须移出其限制位置，以重新建立对踏板的自由进入并释放闩锁机构。 闩板必须移动以将其移出限制位置的方向与踏板必须移动到达其操作位置的方向相反。