초록 ▼

A guard assembly for a saw or other cutting device includes fixed and movable guards relatively pivotal by way of a linkage assembly having two links pivotally interconnected coaxially with a cam roller engageable with a cam surface for controlling relative guard movement. Other preferred features i

A guard assembly for a saw or other cutting device includes fixed and movable guards relatively pivotal by way of a linkage assembly having two links pivotally interconnected coaxially with a cam roller engageable with a cam surface for controlling relative guard movement. Other preferred features include a torsional coil guard return spring and spring enclosure that minimizes interference with workpiece cutting depth, an arbor shaft cover retention fastener that doubles, along with another caliper member, as a blade caliper set that prevents guard damage in the event of a bent or deflected blade or cutter, a drive assembly hold-down assembly for storage, and a horizontally-extending handle centered horizontally relative to the blade or cutter.

대표청구항 ▼

[ What is claimed is:] [1.] A cutting device for performing cutting operations on a workpiece, said cutting device comprising:a base assembly for receiving the workpiece;a support interconnected with said base assembly;a drive assembly including a motor, an arbor shaft rotatable about an arbor axis,

[ What is claimed is:] [1.] A cutting device for performing cutting operations on a workpiece, said cutting device comprising:a base assembly for receiving the workpiece;a support interconnected with said base assembly;a drive assembly including a motor, an arbor shaft rotatable about an arbor axis, and a cutting tool driven by said motor about said arbor shaft, said drive assembly being pivotally interconnected with said support for selective pivotal movement of said motor and said cutting tool relative to said support assembly between an at-rest position wherein said cutting tool is out of engagement with the workpiece when the workpiece is on said base and an operational position wherein said cutting tool is in a cutting engagement with the workpiece when the workpiece is on said base; anda guard assembly including a fixed guard partially surrounding a cutting periphery of said cutting tool and a movable guard, said fixed guard being fixedly interconnected with said drive assembly, and said movable guard being pivotally interconnected with said drive assembly for pivotal movement about said arbor shaft between a closed position surrounding a predetermined portion of the cutting periphery of said cutting tool and an open position covering a lesser portion of the cutting periphery of said cutting tool than when in said closed position, said guard assembly further including a linkage assembly for drivingly moving said movable guard between said closed and said open positions as said drive assembly is moved between said at-rest and said operational positions, respectively, said linkage assembly including:a first link having an inner end pivotally interconnected with said support at a fixed location thereon and an opposite intermediate end;a second link having an outer end pivotally interconnected with said movable guard and an opposite intermediate end pivotally interconnected with said intermediate end of said first link for pivotal movement relative thereto about an intermediate linkage axis;an intermediate roller rotatably interconnected with said intermediate ends of said first and second links for rotation about said intermediate linkage axis; anda cam surface fixed relative to said drive assembly and said fixed guard and engageable by said roller for rotation of said roller thereon.