Depth of cut adjustment for a portable circular saw
First Claim
1. In a portable power driven saw of the type having a generally fore and aft extending shoe for supporting the saw on a workpiece, and a blade and motor subassembly disposed so that the blade extends in a fore and aft plane and below the shoe so as to establish a depth of cut, a depth of cut adjustment arrangement comprising:
- pivot means for connecting the blade and motor subassembly to the shoe towards a first end of the shoe and on a first side of the blade and motor subassembly for facilitating relative pivoting movement between the blade and motor subassembly and the shoe, about a transverse axis, for adjustment of the depth of cut;
a first generally upwardly extending depth adjustment member carried by the shoe and disposed, in assembly, on a second side of the blade and motor subassembly opposite from the first side;
a second depth adjustment member carried by the blade and motor subassembly and disposed to slidably engage the first depth adjustment member during pivoting movement for depth of cut adjustment; and
means carried in fixed relation by the first depth adjustment member for adjustably securing the respective first and second depth adjustment members together to establish a selected depth of cut.
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Accused Products
Abstract
In a portable circular saw depth of cut adjustment is effected by pivoting movement between a shoe 24 (which supports the saw on a workpiece) and a motor and gear case housing 26 (carrying the saw blade 12) about a pivot connection 28 rearward of the motor and gear case housing. Forward of the housing 26 an upwardly extending arcuate depth slide 38, fixed to the shoe 24, slidably engages an arcuate depth guide 40 carried by the motor and gear case housing 26. Towards the upper end of the depth slide 38, and in generally fixed relation to it, a clamping assembly 42 selectively clamps the depth slide 38 and depth guide 40 together to establish a depth of cut adjustment setting. The essentially fixed relationship of the locking knob 100 of the clamping assembly 42 to the shoe 24 mean that the operations of changing depth adjustment setting may be made without changing operator'"'"'s hand positions on the saw. In addition, the fixed position of the knob 100 in sawing operations mean that by design, suitably shaped, sized and positioned, it may be used as an auxiliary handle in guiding the saw in operations.
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Citations
15 Claims
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1. In a portable power driven saw of the type having a generally fore and aft extending shoe for supporting the saw on a workpiece, and a blade and motor subassembly disposed so that the blade extends in a fore and aft plane and below the shoe so as to establish a depth of cut, a depth of cut adjustment arrangement comprising:
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pivot means for connecting the blade and motor subassembly to the shoe towards a first end of the shoe and on a first side of the blade and motor subassembly for facilitating relative pivoting movement between the blade and motor subassembly and the shoe, about a transverse axis, for adjustment of the depth of cut; a first generally upwardly extending depth adjustment member carried by the shoe and disposed, in assembly, on a second side of the blade and motor subassembly opposite from the first side; a second depth adjustment member carried by the blade and motor subassembly and disposed to slidably engage the first depth adjustment member during pivoting movement for depth of cut adjustment; and means carried in fixed relation by the first depth adjustment member for adjustably securing the respective first and second depth adjustment members together to establish a selected depth of cut. - View Dependent Claims (2, 3)
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4. A portable electrically powered circular saw comprising:
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an elongated generally planar shoe with first and second opposite ends and a longitudinal axis; an upwardly extending first adjustment member carried by the shoe towards its first end and including a first locking face facing towards the second end and spaced upwardly from the shoe; a powered saw blade subassembly including an operator handle and a saw blade carried for rotation on an axis perpendicular to the longitudinal axis of the shoe, the saw blade subassembly being pivotably connected to the shoe towards the shoe'"'"'s second end for permitting swinging movement of the subassembly relative to the shoe about an axis perpendicular to the longitudinal axis of the shoe; a second locking face carried by the saw blade subassembly and facing away from the pivot axis for slidably engaging the first locking face; and releasable locking means carried by the upwardly extending adjustment member towards its upper end for holding the respective locking faces together at a selected juxtaposition so as to establish a depth of cut. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A portable circular saw of the type in which a powered saw blade subassembly having first and second opposite ends is pivotably connected at its first end to a shoe and in which the second end is adjustably spaceable from the shoe by an adjustment means including cooperating slidably engaging arcuate members characterized in that:
the powered saw blade subassembly includes a fixed main operator'"'"'s handle and in that the adjustment means includes a locking knob manipulable to lock the saw blade subassembly at a selected spacing from the shoe and the locking knob is carried in fixed relation to the shoe so that adjustment of the spacing between the saw blade subassembly and the shoe may be effected by an operator holding the saw in one hand by the operator'"'"'s handle and grasping the locking knob with the other hand without relinquishing his grasp of the locking knob. - View Dependent Claims (15)
Specification