Power sander with pad containing air-flow passages
AssigneeHutchins Manufacturing Company
InventorAlma A. Hutchins
Life of this patent
Estimating the term…
Abstract
A power driven sanding tool having a resiliently deformable backing pad to which a sheet of sandpaper is attached and by which the sandpaper is actuated to abrade a workpiece, with the pad containing internal passages through which a flow of air and abraded particles are drawn by suction from a location near the workpiece to a dust collection bag or the like, and with the pad containing an element more rigid than the deformable cushioning material of the pad and adapted to prevent deformation of the cushioning material by the force of the suction to thus avoid constriction of the air-flow passages by the force of the suction.
Claims25
A powered abrading tool comprising:
- a body;
- a motor carried by said body;
- and
- a unit which is adapted to carry a sheet of abrading material and is actuated relative to said body by said motor to abrade a work surface, and which includes a cushion of resiliently deformable material backing up said sheet of abrading material;
- said cushion containing passages through which air and particles abraded from the work surface are drawn by vacuum from a location near the work surface through the interior of the cushion to a recess in the cushion from which the air and particles are drawn upwardly by vacuum;
- and
- an element which is stiffer than said deformable material of the cushion and is located at said recess and resists flow restricting deformation of said resiliently deformable material of the cushion at the recess by the force of the vacuum.
A pad adapted to be attached to a power unit of an abrading tool, and adapted to carry a sheet of abrading material and to be actuated by said power unit to abrade a workpiece, said pad comprising:
- a cushion of resiliently deformable material for backing up the abrading material;
- a plate more rigid than said resiliently deformable material of the cushion and extending across the upper side thereof, and having an opening through which the shank of a threaded fastener can extend for connection to said power unit to detachably secure the pad thereto;
- and
- a lock washer carried by said plate and cushion at the underside of said plate and containing an opening through which said shank of the fastener can extend, and having a portion against which an enlarged head of this fastener bears upwardly to secure the head to said power unit;
- said washer being secured to the plate and cushion for handling therewith, and being retained against separation therefrom in handling prior to attachment of the pad to the power unit by said fastener.
A sanding pad adapted to carry a sheet of abrading material and which is adapted to be actuated by a motor of a powered abrading tool relative to a body of the tool to abrade a work surface;
- said pad comprising:
- a cushion of resiliently deformable material for backing up said sheet of abrading material;
- said cushion containing passages through which air and particles abraded from the work surface are drawn by vacuum from a location near the work surface through the interior of the cushion to a recess in the cushion from which the air and particles are drawn upwardly by vacuum;
- and
- an element which is stiffer than said deformable material of the cushion and is located at said recess and resists flow restricting deformation of said resiliently deformable material of the cushion at the recess by the force of the vacuum.
Dependencies are inferred from the claim text.