초록 ▼

An actuator for selectively exerting a force responsive to an increase or decrease in applied electrical energy, including an electrically conductive member slideably seated within an electrically non-conductive frame, a thermally responsive and electrically conductive shape memorizing spring seated

An actuator for selectively exerting a force responsive to an increase or decrease in applied electrical energy, including an electrically conductive member slideably seated within an electrically non-conductive frame, a thermally responsive and electrically conductive shape memorizing spring seated within the frame and adjacent to the member for urging the member responsive to the passage of electrical current through the shape memorizing spring. An electrically conductive contact strip is connected to the frame and extends therefrom in contact with the member such that movement of the member from the neutral position toward an optimal position will maintain the member in contact with the contact strip and wherein movement of the member to the optimal position will disconnect the member and the contact strip. A power source for generating energy is electrically connected to the contact strip and to the shape memorizing spring whereby a circuit is formed when the member is in contact with the contact strip. A thermally non-responsive spring is seated within the frame for urging the member toward the thermally responsive shape memorizing spring.

대표청구항 ▼

[ What I claim is:] [1.] An Actuator for selectively exerting a force responsive to an increase or decrease in applied electrical energy, comprising;a. an electrically conductive member slideably seated within an electrically non-conductive frame;b. a thermally responsive shape memorizing spring sea

[ What I claim is:] [1.] An Actuator for selectively exerting a force responsive to an increase or decrease in applied electrical energy, comprising;a. an electrically conductive member slideably seated within an electrically non-conductive frame;b. a thermally responsive shape memorizing spring seated within said frame and adjacent to said member for urging said member responsive to the passage of electrical current through said shape memorizing spring;c. means for generating an electrical current conductively connected to said shape memorizing spring; andd. electrical contact means conductively connected to said generating means and biased in pressed but unconnected abutment with said member thus creating an electrical circuit through which an electrical current is passed through said shape memorizing spring to cause said shape memorizing spring to expand and thereby urge said member, wherein said contact means includes a first portion connected to said frame and extending therefrom toward said member, a crimped portion connected to said first portion in angular relation thereto, and a second portion connected to said crimped portion opposite said first portion and in substantially parallel relation thereto, wherein said second portion extends in biased abutment with said member and wherein movement of said member past said second portion will space said member from said contact means.