Coupling devices

Claim 2

A coupling device comprising a rotatable shaft having a splined end portion including a plurality of spline grooves, a cylindrical socket member of resilient plastic material engageable with said shaft end portion and deformable upon said engagement to provide a tight force fit with said shaft end portion, said cylindrical socket member having ribs projecting inwardly thereof engageable with said spline grooves, and a collar mounted axially slidably but non-rotatably on the shaft, the collar being adapted to disengage the cylindrical socket member from the splined end portion.

Claim 3

A coupling device forming part of a sanding machine, said device comprising a rotatable shaft having a splined end portion including a plurality of spline grooves, and a cylindrical socket member of resilient plastic material engageable with said shaft end portion and deformable upon said engagement to provide a tight force fit with said shaft end portion, said cylindrical socket member having ribs projecting inwardly thereof engageable with said spline grooves, said rotatable shaft being connectable to a power source, and said cylindrical socket member comprising an abrasive disc.

Claim 4

A coupling device forming part of a sanding machine, said device comprising a rotatable shaft having a splined end portion including a plurality of spline grooves, and a cylindrical socket member of resilient plastic material engageable with said shaft end portion and deformable upon said engagement to provide a tight force fit with said shaft end portion, said cylindrical socket member having ribs projecting inwardly thereof engageable with said spline grooves, said rotatable shaft being connectable to a power source, and said cylindrical socket member comprising an abrasive disc.

Claim 5

A device according to claim 1 including means for retaining the collar upon the shaft and for limiting its sliding travel thereon.

Claim 6

A device according to claim 1 wherein the shaft has a projecting pin engageable with a slot of limited length in the collar parallel to the axis of the shaft.

Claim 7

A device according to claim 1 wherein the shaft has a raised flange for abutting with the collar when the collar is at one extremity of its sliding travel.

Claim 8

A device according to claim 1, including an abutment member attachable to the collar for abutting with the second member.

Claim 9

A device according to claim 6, wherein the abutment member is in continuous contact with the second member when the first and second members are connected.

Claim 10

A coupling device comprising a rotatable shaft having a splined end portion including a plurality of spline grooves, said shaft end portion being tapered with the widest part of the taper at the end of the shaft, and a cylindrical socket member of resilient plastic material engageable with said shaft end portion and deformable upon said engagement to provide a tight force fit with said shaft end portion, said cylindrical socket member having ribs projecting inwardly thereof engageable with said spline grooves.

Claim 11

A coupling device comprising a rotatable shaft having a splined end portion including a plurality of spline grooves, said shaft end portion being tapered with the widest part of the taper at the end of the shaft, and a cylindrical socket member of resilient plastic material engageable with said shaft end portion and deformable upon said engagement to provide a tight force fit with said shaft end portion, said cylindrical socket member having ribs projecting inwardly thereof engageable with said spline grooves.

Claim 12

A device according to claim 7, wherein the collar has a raised annular shoulder for engaging with the abutment member, one or more ribs for engaging with grooves in the abutment member for preventing relative rotation of the collar and the abutment member, and a curved portion adapteD for use as a thumb or finger grip.

Claim 13

A coupling device comprising a rotatable shaft having a splined end portion including a plurality of spline grooves, and a cylindrical socket member of resilient plastic material engageable with said shaft end portion and deformable upon said engagement to provide a tight force fit with said shaft end portion, said cylindrical socket member having ribs projecting inwardly thereof engageable with said spline grooves, said spline grooves being inclined at a small angle to the shaft axis, and said ribs being parallel to the shaft axis and slightly narrower than said grooves.

Claim 14

A coupling device comprising a rotatable shaft having a splined end portion including a plurality of spline grooves, and a cylindrical socket member of resilient plastic material engageable with said shaft end portion and deformable upon said engagement to provide a tight force fit with said shaft end portion, said cylindrical socket member having ribs projecting inwardly thereof engageable with said spline grooves, said spline grooves being inclined at a small angle to the shaft axis, and said ribs being parallel to the shaft axis and slightly narrower than said grooves.

Claim 15

A sanding device comprising a first member and a second member for rotation about a common axis, the first member comprising a rotatable shaft connectable to a power source, a splined end portion on the shaft including a plurality of spline grooves inclined to a small angle to the shaft axis, the splined end portion of the shaft being tapered with the widest part of the taper being at the end of the shaft, the second member comprising an abrasive disc integral with a cylindrical member of resilient plastic material, a socket in the cylindrical member, ribs on the cylindrical member, the ribs projecting inwardly in the socket, parallel to the shaft axis and slightly narrower than the grooves, being adapted to engage the splined end portion, a collar mounted slidably but non-rotatably on the shaft, said collar being adapted to disengage the second member from the splined end portion, the shaft having a projecting pin engageable with a slot of limited length in the collar parallel to the axis of the shaft for retaining the collar upon the shaft and limiting its sliding travel thereon, the shaft further having a raised flange for abutting with the collar when the collar is at one extremity of its sliding travel, an abutment member attachable to the collar in continuous contact with the second member when the first and second members are connected, the collar having a raised annular shoulder for engaging with the abutment member, at least one rib for engaging with grooves in the abutment member preventing relative rotation of the collar and the abutment member and a curved portion on the collar adapted for use as a thumb or finger grip.

Claim 16

A sanding device comprising a first member and a second member for rotation about a common axis, the first member comprising a rotatable shaft connectable to a power source, a splined end portion on the shaft including a plurality of spline grooves inclined to a small angle to the shaft axis, the splined end portion of the shaft being tapered with the widest part of the taper being at the end of the shaft, the second member comprising an abrasive disc integral with a cylindrical member of resilient plastic material, a socket in the cylindrical member, ribs on the cylindrical member, the ribs projecting inwardly in the socket, parallel to the shaft axis and slightly narrower than the grooves, being adapted to engage the splined end portion, a collar mounted slidably but non-rotatably on the shaft, said collar being adapted to disengage the second member from the splined end portion, the shaft having a projecting pin engageable with a slot of limited length in the collar parallel to the axis of the shaft for retaining the collar upon the shaft and limiting its sliding travel thereon, the shaft further having a raised flange for abutting with the collar when the collar is at one extremity of its sliding travel, an abutment member attachable to the collar in continuous contact with the second member when the first and second members are connected, the collar having a raised annular shoulder for engaging with the abutment member, at least one rib for engaging with grooves in the abutment member preventing relative rotation of the collar and the abutment member and a curved portion on the collar adapted for use as a thumb or finger grip.

Claim 17

An abrading implement, including a body, a tool spindle received in said body for unison rotary and relative longitudinal sliding motion, means connecting said spindle to said body for limited relative longitudinal motion, said spindle and body forming a rotary drive and support assembly, a work disc releasably installed in a rotary driven and supported relation to said assembly, and means utilizing longitudinal motion of said tool spindle relative to said body in advancing and retracting strokes to achieve a locking and release of said work disc relative to said assembly, said work disc having a side seating to a portion of said body, said side having a hub including a socket to receive an inner end of said spindle on an advancing stroke thereof, a retracting stroke utilizing said body as a reactant means to strip the disc from said spindle, said hub being formed of a resilient deformable material and said inner end of said spindle being oversize relative to inside dimensions of said hub, an advancing motion of said spindle to thrust the inner end thereof into said hub establishing a friction fit by which said disc is yieldingly retained on said spindle, said body having a recess to receive said hub and having an annular bearing surface surrounding said recess, said work disc having a complementary annular bearing surface surrounding said hub, said bearing surfaces interacting to allow said spindle end to be withdrawn from said hub upon a retracting motion of said spindle.

Claim 18

An abrading implement, including a body, a tool spindle received in said body for unison rotary and relative longitudinal sliding motion, means connecting said spindle to said body for limited relative longitudinal motion, said spindle and body forming a rotary drive and support assembly, a work disc releasably installed in a rotary driven and supported relation to said assembly, and means utilizing longitudinal motion of said tool spindle relative to said body in advancing and retracting strokes to achieve a locking and release of said work disc relative to said assembly, said work disc having a side seating to a portion of said body, said side having a hub including a socket to receive an inner end of said spindle on an advancing stroke thereof, a retracting stroke utilizing said body as a reactant means to strip the disc from said spindle, said hub being formed of a resilient deformable material and said inner end of said spindle being oversize relative to inside dimensions of said hub, an advancing motion of said spindle to thrust the inner end thereof into said hub establishing a friction fit by which said disc is yieldingly retained on said spindle, said body having a recess to receive said hub and having an annular bearing surface surrounding said recess, said work disc having a complementary annular bearing surface surrounding said hub, said bearing surfaces interacting to allow said spindle end to be withdrawn from said hub upon a retracting motion of said spindle.