Rockwell International Corporation

Porter-cable Corporation

Robert W Taylor

Russell O Robison

David R Griffies

Matthew G Popik

Benton W Gachet

Dennis C Hunstman

A sander includes a sander body, a motor held by the sander body, a pad operably connected to the motor so as to impart an orbital motion to the pad, a housing swivellably attached to the sander body, and bumped structure between the housing and the sander body. The bumped structure is constructed and arranged for imparting friction between the housing and the sander body to increase a force required to swivel the housing about the sander body. A groove having a wall is defined in at least one of the housing and the sander body, and the bumped structure includes a plurality of protuberances along the wall of the groove. The housing includes a dust exhaust channel attached to a filter housing, and the filter housing includes a rigid, porous material having a pore size effective for entrapping dust which enters the filter housing.

Sander

An assembly for facilitating the cutting of matching panel joints includes a base body which is adapted to be secured to the lower surface of a router or the like and has a lower ramped slide surface defined therein, and a slide member having a topped ramped bearing surface defined therein for contacting the lower ramped slide surface in the base body. The base body and slide member are mounted for sliding relationship relative to each other so that a lower bearing surface on the slide member is vertically adjustable relative to a corresponding lower bearing surface on the base body. In operation, the base body and slide member are adjusted so that their respective bearing surfaces differ in elevation to a degree equal to one-half the wavelength of a cutting bit to be used in the router. In this way, a first cut may be effected by using the bearing surface in the base body, and a complementary second cut may be formed by using the bearing surface on the slide member, without the need for readjustment of the assembly between cuts.

Ramped device for finite positioning of panel joint forming tool

A portable, power-operated sabre saw having a power driven saw blade holder which is curved and which is mounted in the sabre saw housing for reciprocation along a curved path that is determined by its curvature to impart to a blade carried thereby a component of cutting stroke travel that is in the direction in which the blade is urged against a workpiece to cut the workpiece. Another feature disclosed herein is a counterweight which dynamically counterbalances the mass of the saw blade holder and the saw blade and which is recessed to receive a power driven gear that supplies the motion for reciprocating the holder and the counterweight. The counterweight is confined between and guided for reciprocating motion by opposed side wall regions of a longitudinally split housing, and a guide pin, which is trapped between the halves of the split housing, extends through a slot in one end of the counterweight to provide a further guide for the counterweight. Also disclosed herein is two-part bearing holder assembly in which a locating protuberance is formed on one part to transversely locate the second part, but which permits relative axial displacement of the second part to enable the second part to be axially positioned by engagement with a spherically contoured surface of a bearing that is clamped between the two bearing holder parts. The second part mounts a gear supporting idler shaft to ensure that the axis of the idler shaft is parallel with the axis of the bearing seat on the second part. Another feature disclosed herein is a sabre saw blade chuck assembly that so distributes operating forces developed during sawing as to reduce the likelihood of structure failure of the blade holder.

Saber saw

A portable, power-operated sabre saw having a power driven saw blade holder which is curved and which is mounted in the sabre saw housing for reciprocation along a curved path that is determined by its curvature to impart to a blade carried thereby a component of cutting stroke travel that is in the direction in which the blade is urged against a workpiece to cut the workpiece. Another feature disclosed herein is a counterweight which dynamically counterbalances the mass of the saw blade holder and the saw blade and which is recessed to receive a power driven gear that supplies the motion for reciprocating the holder and the counterweight. The counterweight is confined between and guided for reciprocating motion by opposed side wall regions of a longitudinally split housing, and a guide pin, which is trapped between the halves of the split housing, extends through a slot in one end of the counterweight to provide a further guide for the counterweight. Also disclosed herein is two-part bearing holder assembly in which a locating proturberance is formed on one part to transversely locate the second part, but which permits relative axial displacement of the second part to enable the second part to be axially positioned by engagement with a spherically contoured surface of a bearing that is clamped between the two bearing holder parts. The second part mounts a gear supporting idler shaft to ensure that the axis of the idler shaft is parallel with the axis of the bearing seat on the second part. Another feature disclosed herein is a sabre saw blade chuck assembly that so distributes operating forces developed during sawing as to reduce the likelihood of structure failure of the blade holder.

Growing community of inventors

Jackson, TN, United States of America

Robert W Taylor