Brake apparatus for a motor driven saw blade
First Claim
1. A brake apparatus for a saw comprising:
- a motor including a threaded drive shaft extending therefrom;
a saw blade operatively attached to said drive shaft;
a hub threadably attached to said drive shaft, said hub having a shape of a cylinder whose centerline axis lies along the axis of said shaft;
two brake shoes, operatively positioned one on each side of said hub and substantially adjacent thereto, each shoe including a brake pad portion thereon, said shoes pivotally attached one with the other at a first end, each said shoe shaped such that said brake pad portion thereof is defined in a shape corresponding to the surface shape of said hub; and
brake actuation means operatively connected to the second end of said shoes, said means causing said shoes to squeeze together when said means is actuated, to thereby brake rotative movement of said saw blade.
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Accused Products
Abstract
A brake apparatus is disclosed for a motor driven saw blade, and includes a hub threadably attached at one end along its centerline axis to a drive motor, and attached to a saw blade via a flange formed on the other end of said hub, said hub having the shape of a cylinder. Also included are two brake shoes, one situated on each side of the hub, with each shoe including a brake pad portion thereon, such that when said brake shoes are actuated by brake actuation means operatively connected to said brake shoes, said shoes are caused to squeeze together to thereby brake rotative movement of said hub and therewith said saw blade. Means are also provided for adjusting the extent of brake shoe displacement during actuation as needed due to brake pad wear.
122 Citations
10 Claims
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1. A brake apparatus for a saw comprising:
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a motor including a threaded drive shaft extending therefrom; a saw blade operatively attached to said drive shaft; a hub threadably attached to said drive shaft, said hub having a shape of a cylinder whose centerline axis lies along the axis of said shaft; two brake shoes, operatively positioned one on each side of said hub and substantially adjacent thereto, each shoe including a brake pad portion thereon, said shoes pivotally attached one with the other at a first end, each said shoe shaped such that said brake pad portion thereof is defined in a shape corresponding to the surface shape of said hub; and brake actuation means operatively connected to the second end of said shoes, said means causing said shoes to squeeze together when said means is actuated, to thereby brake rotative movement of said saw blade.
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2. A brake apparatus for a saw comprising:
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a motor including a threaded drive shaft extending therefrom; a saw blade; a hub threadably attached to said drive shaft at one end and having an annular flange defined on its second end, said hub having a shape therebetween of a cylinder whose centerline axis lies along the axis of said shaft; means for attaching said saw blade to said flange; two brake shoes, operatively positioned one on each side of said hub and substantially adjacent thereto, each shoe including a brake pad portion thereon, said shoes pivotally attached one with the other at a first end, each said shoe shaped such that said brake pad portion thereof is defined in a shape corresponding to the surface shape of said hub; and brake actuation means operatively connected to the second end of said shoes, said means causing said shoes to squeeze together when said means is actuated to thereby brake rotative movement of said saw blade. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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Specification