Trigger-actuated switch device with adjustment means for establishing a plurality of predetermined trigger positions

Claim 2

For use with a poRtable apparatus having a housing with a trigger-receiving aperture, wherein such apparatus is of the type having a motor for use with a control system capable of operating such motor at a plurality of predetermined speeds in response to the amount of trigger movement, a trigger-actuated switch device for mounting in such housing with the trigger extending through said aperture for manual depression, said switch device comprising, a casing member, a trigger member mounted by the casing member for oscillating movement relative thereto, resilient means interposed between said members and urging the trigger member in one direction of movement thereof to an extended position, said trigger member having a formation thereon defining a first abutment surface, a finger-manipulatable element carried by said casing member for movement relative thereto, said element including a formation defining a movable abutment surface, movement of said element to one position thereof serving to locate said movable abutment surface in the path of movement of said first abutment surface such that the former is engaged by the latter during movement of the trigger member in its other direction of movement thereby to limit movement of the latter to a first distance less than its maximum distance in such direction for establishing one of said predetermined speeds, movement of said element to another position serving to move said movable abutment surface out of the path of movement of the first abutment surface thereby permitting said trigger member to be moved in its other direction a distance greater than said first distance for establishing another of said predetermined speeds.

Claim 3

The switch device according to claim 1 further defined by, said element being rotatably carried by said casing, said movable abutment surface being eccentric to the axis of rotation of said element.

Claim 4

The switch device according to claim 1 further defined by, said element including an arm pivotally mounted at one end thereof to said casing member, the other end of said arm being disposed adjacent said trigger member for being engaged by the operator''s trigger finger.

Claim 5

For use with a portable apparatus having a housing with a trigger-receiving aperture, wherein such apparatus is of the type having a motor for use with a control system capable of operating such motor at a plurality of predetermined speeds in response to the amount of trigger movement, a trigger-actuated switch device for mounting in such housing with the trigger extending through said aperture for manual depression, said switch device comprising, a casing member, a trigger member mounted by the casing member for oscillating movement relative thereto, resilient means interposed between said members and urging the trigger member in one direction of movement thereof to an extended position, said trigger having a formation defining a first abutment surface, a trigger lock button assembly carried by said casing member and including a cylindrical formation coaxial with the axis of movement of the lock button, a sleeve rotatably mounted on said cylindrical formation and carrying a lug defining a movable abutment surface, rotation of said sleeve to one position serving to locate said lug in the path of movement of said first abutment surface such that the former is engaged by the latter during movement of the trigger member in its other direction of movement thereby to limit movement of the latter to a first distance less than its maximum distance in such direction for establishing one of said predetermined speeds, movement of said sleeve to another position serving to move said lug out of the path of movement of the first abutment surface thereby permitting said trigger member to be moved in its other direction a distance greater than said first distance for establishing another of said predetermined speeds.

Claim 6

For use with a portable apparatus having a housing with a trigger-receiving aperture, wherein such apparatus is of the type having a motor for use with a control system capable of operating such motor at a plurality of predetermined speeds in response to the amount of trigger movement, a trigger-actuated switch device for mounting in such housing with the trigger extending through said aperture for manual depression, said switch device comprising, a casing member, a trigger member mounted by the casing member for oscillating movement relative thereto, resilient means interposed between said members and urging the trigger member in one direction of movement thereof to an extended position, said trigger having a formation defining a first abutment surface, a trigger lock button assembly carried by said casing member and including a cylindrical formation coaxial with the axis of movement of the lock button, a sleeve rotatably mounted on said cylindrical formation and carrying a lug defining a movable abutment surface, rotation of said sleeve to one position serving to locate said lug in the path of movement of said first abutment surface such that the former is engaged by the latter during movement of the trigger member in its other direction of movement thereby to limit movement of the latter to a first distance less than its maximum distance in such direction for establishing one of said predetermined speeds, movement of said sleeve to another position serving to move said lug out of the path of movement of the first abutment surface thereby permitting said trigger member to be moved in its other direction a distance greater than said first distance for establishing another of said predetermined speeds.

Claim 7

The switch device according to claim 4 further defined by, said lug being arranged for extending into the space between the front of the casiNg member and the rear of the trigger member when said sleeve is in said one position thereof, said trigger formation being on said rear thereof.