POWER TOOL CONTROL,申请号USD3671699-传众专利搜索

POWER TOOL CONTROL

申请公布号：US3671699(A)

申请号：USD3671699

申请日期：1970.11.19

申请公布日期：1972.06.20

申请人：

LUCERNE PRODUCTS INC.

发明人：BENJAMIN H. MATTHEWS

分类号：B23B45/02;G01V3/10;H01H13/08;H02K7/14;H02K23/66;(IPC1-7):H01H21/10

主分类号：B23B45/02

摘要：A control for power tools, power appliances, or the like, such as for instance, an electric drill, wherein a trigger member is movable on a support from an off position to an on position and vice versa. An electrical conducting spring-like member coacts with the trigger for movement therewith. An electric motor including opposing brush assemblies is provided in the tool with a current conducting line connected to one side of the motor and another current conducting line connected to the electrical conducting member. The trigger is operative to move the electrical conducting member into electrical conducting relation to one of the brush assemblies thereby completing the circuit to the motor upon predetermined movement of the trigger toward its on position. Release of the trigger by the finger of the operator causes the spring-like electrical conducting member to move away from circuit completing relation with the motor thereby deenergizing the motor, and moving the trigger toward off position.