TRIGGER MECHANISM FOR ROTARY SWITCHES AND THE LIKE

专利名称：TRIGGER MECHANISM FOR ROTARY

SWITCHES AND THE LIKE

发明人：ALEXANDER MACLEAN申请号：US3649793D申请日：19700813公开号：US3649793A公开日：19720314

摘要：A trigger mechanism for rotary electrical switches and the like has a first rollermounted for rotation about a fixed point and a second roller mounted on a movablesupport with the support being pivotally mounted for pivotal movement about a pivotpoint spaced from the center point of the second roller. Means urge the second rollerinto contact with the first roller at a point lying on coincident radii of the first and secondrollers for establishing a latch position of the trigger mechanism. A trip means preferablyin the form of a solenoid push rod is provided for moving the first roller pivotally aboutits fixed pivot point. The trigger mechanism permits an extremely large force as may beprovided by a loaded spring, to be maintained in the latch position and immediatelyreleased by a small force provided by the trip means which trip means can be small insize, fast acting and relatively inexpensive. Thus, rotary electrical switches such as lockoutrelays can be latched in a first position and automatically tripped by a small force to beimmediately responsive to move to a second position.

申请人：ELECTRO SWITCH CORP.

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