Patent ID: 7705260

Claim:
A switch assembly, comprising: a. a casing; b. an input terminal secured with respect to said casing and used for electric connection to a supply of an electric voltage; c. an output terminal secured with respect to said casing and used for electric connection to an electricity consuming device to be controlled by said switch assembly; d. a fixed contact portion secured with respect to said casing and electrically connected to said output port; e. a support secured with respect to said casing and electrically connected to said input port; f. a trigger onto which a trigger lever is secured, said trigger lever held on and extending into said casing and being slidable with respect to said casing, a cam being secured to said trigger lever, a trigger spring being attached to said trigger for functioning so that said trigger lever and said trigger are normally in an outermost position, said trigger being able to be activated by a user from outside said switch assembly; g. a pivot contact lever having a second end provided with a compressed portion and supported on said support and pivotably and electrically connected to a pivot connecting point on top of said support, a pivot contact lever spring being attached to said pivot contact lever; h. wherein said cam presses against said compressed portion so that said pivot contact lever pivots to a state in which the second end thereof is cut off from electric connection to said fixed contact portion by overcoming action force from said pivot contact lever spring when said trigger lever and said trigger being normally in the outermost position; and i. wherein said cam leaving said compressed portion so that said pivot contact lever pivots around said connecting point between itself and said support so that the first end of said pivot contact lever contacts said fixed contact portion so that said input terminal is in electric communication with said output terminal when said trigger being pressed to overcome action force from said pivot contact lever spring so that said trigger lever and said trigger simultaneously slide inwardly, said trigger lever sliding outwardly as subjected to the action force from said trigger spring so that said trigger and said trigger lever protrude outwardly when said trigger being released; wherein an additional pressing plate is provided on said pivot contact lever with a first end thereof fixed to said pivot contact lever and a second end thereof pressed on top of said support.