Power tool control

Claim 2

In a control for tools, and power appliances comprising a support, a trigger mounted on said support and movable with respect thereto, said trigger being movable from an off posiTion to an on position and from said on position to said off position, and movable electrical current conducting means for conducting current to an electric motor, said electrical conducting means coacting with said trigger and being operative to normally automatically urge said trigger to said off position upon release of said trigger from exterior actuating force, said trigger being operative in said on position to cause said electrical conducting means to be moved into electrical conducting engaged relation with an associated brush assembly of said motor for completing the circuit to said motor.

Claim 3

A control in accordance with claim 1 wherein said electrical conducting means comprises a spring-like member having a portion thereof resiliently engaging said trigger, said member being operative to automatically move said trigger to said off position and automatically deenergize the motor upon release of said trigger from exterior actuating force.

Claim 4

A control in accordance with claim 1 wherein said electrical conducting means comprises a one piece strip-like member having spring-like characteristics and including means thereon for coupling the member to a source of current and other means thereon adapted for slidable engaging coaction with the brush assembly of the electrical motor for coupling the motor into circuit for energization thereof upon movement of said trigger to said on position, said spring-like member having a portion thereof coacting with said trigger in resiliently engaged relation and urging said trigger to said off position.

Claim 5

In a control for tools and power appliances comprising a support, a trigger mounted on said support and movable with respect thereto, said trigger being movable from an off position to an on position and from said on position to said off position, and electrical current conducting means for conducting current to an electric motor, said electrical conducting means coacting with said trigger and being operative to normally urge said trigger to said off position, said trigger being operative in said on position to cause said electrical conducting means to be disposed in electrical conducting relation to said motor for completing the circuit to said motor, said electrical conducting means comprising a one piece strip-like member having spring-like characteristics and including means thereon for coupling the member to a source of current and other means thereon adapted for coupling coaction with the electrical motor for coupling the motor into circuit for energization thereof upon movement of said trigger to said on position, and wherein said strip-like member includes a foot portion comprising the first mentioned coupling means adapted for coupling to a source of current, and a body portion of arcuate configuration and a head portion, said head portion comprising said other coupling means and being of step configuration in side elevation for camming coaction with an associated brush assembly of the electrical motor and upon pivotal movement of said body portion toward and away from said brush assembly.

Claim 6

In a control for tools and power appliances comprising a support, a trigger mounted on said support and movable with respect thereto, said trigger being movable from an off position to an on position and from said on position to said off position, and electrical current conducting means for conducting current to an electric motor, said electrical conducting means coacting with said trigger and being operative to normally urge said trigger to said off position, said trigger being operative in said on position to cause said electrical conducting means to be disposed in electrical conducting relation to said motor for completing the circuit to said motor, said electrical conducting means comprising a one piece strip-like member having spring-like characteristics and including means thereon for coupling the member to a source of current and other means thereon adapted for coupling coaction with the electrical motor for coupling the motor into circuit for energization thereof upon movement of said trigger to said on position, and wherein said strip-like member includes a foot portion comprising the first mentioned coupling means adapted for coupling to a source of current, and a body portion of arcuate configuration and a head portion, said head portion comprising said other coupling means and being of step configuration in side elevation for camming coaction with an associated brush assembly of the electrical motor and upon pivotal movement of said body portion toward and away from said brush assembly.

Claim 7

A control in accordance with claim 1 in combination with a series commutator motor comprising the electric motor, said electrical conducting means being adapted to coact in engaged sliding electrically conducting relation with one of the brush assemblies of the motor for completing the circuit to the motor upon movement of said trigger to said on position, and being adapted to automatically disengage from said one brush assembly upon release of said trigger from exterior actuating force.

Claim 8

A control in accordance with claim 5 wherein said support comprises a housing of a tool, said housing having a recess therein in which said trigger is mounted for reciprocal movement, said electrical conducting means comprising a vertically elongated body portion of arcuate configuration in side elevation adapted for resilient engagement with said trigger in the on position of said trigger, and a head portion normally spaced from said one brush assembly but movable into electrical conducting contacting engagement with said one brush assembly upon movement of said trigger toward said on position.

Claim 9

A control in accordance with claim 6 wherein said one brush assembly comprises an electrical conducting brush housing with a brush reciprocably movable in said brush housing and disposed in electrical conducting relation to said brush housing, said electrical conducting means being movable into current conducting engagement with said brush housing upon movement of said trigger toward said on position.

Claim 10

A control in accordance with claim 6 wherein said electrical conducting means comprises a flat spring-like member of generally inverted L-shaped configuration in side elevation and wherein said body portion adjacent the lower end thereof is clasped between two generally opposing abutments on said tool housing for anchoring said electrical conducting means with respect to said housing and providing a whip-like action to said spring-like member.

Claim 11

A control in accordance with claim 6 wherein said trigger and said housing are formed of electrical insulating material for non-conducting of current.

Claim 12

An electrical conducting member adapted for assembly in a tool for coaction with a non-conducting trigger of the tool for applying current to the electric motor of the tool, said electrical conducting member comprising a flat spring-like member of electrical conducting material having a body portion and a head portion with said body portion being adapted for engagement with the trigger of the tool for urging the trigger toward off position, and with said head portion being adapted for movement upon flexure of said body portion, into engagement with one of the brush assemblies of the motor for completing the circuit to the motor upon movement of the trigger toward on position.

Claim 13

An electrical conducting member adapted for assembly in a tool for coaction with a non-conducting trigger of the tool for applying current to the electric motor of the tool, said electrical conducting member comprising a flat spring-like member of electrical conducting material having a body portion and a head portion with said body portion being adapted for engagement with the trigger of the tool for urging the trigger toward off position, and with said head portion being adapted for movement upon flexure of said body portion, into engagement with one of the brush assemblies of the motor for completing the circuit to the motor upon movement of the trigger toward on position.

Claim 14

An electrical conducting member in accordance with claim 10 wherein said body portion is of convex configuration in side elevation and said head portion is generally horizontally oriented and is forwardly extending from said head portion, and a generally horizontally oriented forwardly extending foot portion of materially lesser extension as compared to said head portion, said foot portion being adapted for coupling to a line conductor for applying current to said electrical conducting member, and said head portion being of stepped configuration in side elevation.

Claim 15

A control in accordance with claim 6 wherein said trigger is mounted in a depending handle section of said housing for generally horizontal reciprocal movement, the rear surface of said trigger engaging said electrical conducting means with the upper section of said rear surface being of generally circular segmental configuration in side elevation and the lower section of said rear surface being of a materially flatter configuration in said elevation.

Claim 16

In a control for tools, and power appliances, comprising a support, a trigger mounted on said support and movable with respect thereto, said trigger being movable from an off position to an on position and from an on position to an off position, and movable electrical current conducting means for conducting current to an electrically powered means, said electrically conducting means coacting in engaged relation with said trigger and being operative to normally automatically urge said trigger to said off position upon release of said trigger from exterior actuating force, said trigger being operative in said on position to cause said electrical conducting means to be moved into electrical conducting contacting relation with said electrically powered means for completing the circuit to the last mentioned means.

Claim 17

In a control for tools, and power appliances, comprising a support, a trigger mounted on said support and movable with respect thereto, said trigger being movable from an off position to an on position and from an on position to an off position, and movable electrical current conducting means for conducting current to an electrically powered means, said electrically conducting means coacting in engaged relation with said trigger and being operative to normally automatically urge said trigger to said off position upon release of said trigger from exterior actuating force, said trigger being operative in said on position to cause said electrical conducting means to be moved into electrical conducting contacting relation with said electrically powered means for completing the circuit to the last mentioned means.

Claim 18

A control in accordance with claim 13 wherein said electrical conducting means comprises a one piece strip-like member having spring-like characteristics in the plane of movement of said trigger and engaging the latter under resistance to distortion for urging said trigger to said off pOsition.

Claim 19

A control in accordance with claim 13 wherein said electrical conducting means comprises a one piece member having spring-like characteristics and including a foot portion adapted for coupling to a source of current and a body portion of arcuate configuration in side elevation and a head portion, said head portion being adapted for engaged electrically coupling coaction with the electrically powered means for energization thereof upon movement of said trigger to said on position, and said member being operable to automatically disengage from said engaged coaction with said electrically powered means upon release of said trigger from exterior actuating force.

Claim 20

An electrical conducting member adapted for assembly in an electrically powered device such as a portable hand tool or appliance, for coaction with a non-conducting trigger of the device for applying current to an electric motor of the tool, said electrical conducting member comprising a spring-like member of electrical conducting material having a body portion and a head portion with said body portion being adapted for engagement with the trigger of the tool for urging the trigger toward off position, and with said head portion being adapted for movement, upon flexure of said body portion, into engagement with one of the brush assemblies of the motor for completing the circuit to the motor upon movement of the trigger toward on position.

Claim 21

An electrical conducting member adapted for assembly in an electrically powered device such as a portable hand tool or appliance, for coaction with a non-conducting trigger of the device for applying current to an electric motor of the tool, said electrical conducting member comprising a spring-like member of electrical conducting material having a body portion and a head portion with said body portion being adapted for engagement with the trigger of the tool for urging the trigger toward off position, and with said head portion being adapted for movement, upon flexure of said body portion, into engagement with one of the brush assemblies of the motor for completing the circuit to the motor upon movement of the trigger toward on position.