Shoe clamping mechanism for power tool incorporating such
OwnerBrian Wadgeinventor
Life of this patent
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Abstract
A mechanism is disclosed for clamping a jigsaw (1) shoe in a desired position relative to the body of a power tool. A plurality of gear (22, 26) teeth are used to allow greater torque and access as compared to prior art clamping mechanisms.
Claims12
A shoe clamping mechanism for a power tool having a housing, a working member extending from the housing, and a shoe for engaging a workpiece and adapted to be clamped in a plurality of orientations relative to the working member, the mechanism comprising:
- clamping means having a clamping portion and a mounting portion, wherein the clamping means is adapted to be mounted to the tool such that rotation of said mounting portion relative to the housing about a first axis causes movement of said clamping portion between a first position in which said shoe is pivotable relative to the working member and a second position in which said shoe is clamped in position relative to said working member;
- actuating means adapted to be pivoted about a second axis, substantially parallel to said first axis and displaced therefrom;
- and
- torque adjusting means connected to said actuating means and said clamping means wherein application of a first torque to pivot said actuating means about said second axis causes application of a second torque, higher than said first torque, to said clamping means to rotate said mounting portion about said first axis.
A tool comprising a housing, a working member extending from the housing, a shoe engagable with a workpiece and clampable in a plurality of orientations relative to the working member, and a shoe clamping assembly comprising:
- a clamp;
- a mount, rotation of said mount relative to the housing about a first axis causing movement of said clamp between a first position in which said shoe is pivotable relative to the working member and a second position in which said shoe is clamped in position relative to said working member;
- a thumb wheel pivotable about a second axis, substantially parallel to said first axis and displaced therefrom;
- a gear mechanism connected between said thumb wheel and said clamp, wherein application of a first torque to pivot said thumb wheel about said second axis causes application of a second torque to said mount to rotate said mount about said first axis.
Dependencies are inferred from the claim text.