Sanding and buffing wheel

Claim 2

A sanding or buffing device comprising a cup-shaped hub, strip-like elements anchored at one end to and projected generally radially from said hub, said strip-like elements being arranged in groups spaced circumferentially of said hub and being abrasively surfaced in the portions to be applied to the surfaces to be sanded or buffed, the strip-like elements of each group having their inner end portions clustered and slip fit to said hub and their outer end portions projected in a relatively spaced relation and curved in a direction away from that direction in which the hub is turned to advance said strips to engagement with a surface to be sanded or buffed, the projected portions of said strip-like elements having the characteristic of flexing yet being substantially self-sustaining in the spaced position they are caused to assume, means formed in the base of said cup-shaped hub for mounting said device to a driving medium, each of said strip-like elements having a similar generally rectangular elongate shape and the groups thereof being substantially spaced, with the strip-like elements of each group being arranged to fan outwardly of said hub, and said strip-like elements being contained against movement in a sense longitudinally of said cupshaped hub by a cup-shaped cap frictionally attached by a telescoping mount thereof to one end of said hub.

Claim 3

A sanding or buffing device comprising a hub, strip-like elements anchored at one end to and projected generally radially from said hub, said strip-like elements including an abrasive material and being arranged in groups spaced circumferentially of said hub, said hub including therein a plurality of slots, the strip-like elements of each group having their inner end portions clusteRed and friction fit in said slots in the assembly thereof to said hub by means of a slip fit, the outer end portions of the strip elements of each group being projected from said hub in a relatively spaced relation and curved in a direction away from that direction in which the hub is turned to advance said strips to engagement with a surface to be sanded or buffed, the projected portions of said strip-like elements having the characteristics of flexing yet being substantially self-sustaining in the spaced position they are caused to assume, said hub being characterized by a cup-like form, a cup-like cap device inserted in said hub and formed to achieve a friction lock thereto in mount thereof to said hub, said cap device and a portion of said cup-like hub providing means to secure said strip-like elements against movement in a sense endwide of said hub.

Claim 4

A sanding or buffing device comprising a hub, strip-like elements anchored at one end to and projected generally radially from said hub, said strip-like elements including an abrasive material and being arranged in groups spaced circumferentially of said hub, said hub including therein a plurality of slots, the strip-like elements of each group having their inner end portions clusteRed and friction fit in said slots in the assembly thereof to said hub by means of a slip fit, the outer end portions of the strip elements of each group being projected from said hub in a relatively spaced relation and curved in a direction away from that direction in which the hub is turned to advance said strips to engagement with a surface to be sanded or buffed, the projected portions of said strip-like elements having the characteristics of flexing yet being substantially self-sustaining in the spaced position they are caused to assume, said hub being characterized by a cup-like form, a cup-like cap device inserted in said hub and formed to achieve a friction lock thereto in mount thereof to said hub, said cap device and a portion of said cup-like hub providing means to secure said strip-like elements against movement in a sense endwide of said hub.

Claim 5

A sanding or buffing device as in claim 2 characterized by said slots being closed to one end by a peripheral projection from the base of said cup-like hub and portions of the outer wall surface of said hub being stepped inwardly of said hub to accommodate a peripheral flange portion of said cup-like cap device to facilitate the retention of said strip-like elements in said hub.

Claim 6

A sanding or buffing device comprising a hub, strip-like elements anchored at one end to and projected generally radially from said hub, said strip-like elements including an abrasive material and being arranged in groups spaced circumferentially of said hub, the strip elements of each group having their inner end portions clustered and slip fit to said hub and their outer end portions projected in a relatively spaced relation and curved in a direction away from that direction in which the hub is turned to advance said strips to engagement with a surface to be sanded or buffed, the projected portions of said strip-like elements having the characteristic of flexing yet being substantially self-sustaining in the spaced position they are caused to assume, said hub including a molded cup-shaped hub portion including a thin walled base and a relatively thick peripheral wall structure, said wall struture having slots in its outer peripheral surface arranged to open at one end from the lip of the cup and being closed to its opposite end by a portion of the cup base, said slots being formed to provide for friction fit of the clustered inner end portions of a group of said strip-like elements on application thereof to said slots through the open end thereof and slip fit means applied to retain said groups of strip-like elements in said slots.

Claim 7

A sanding or buffing device comprising a hub, strip-like elements anchored at one end to and projected generally radially from said hub, said strip-like elements including an abrasive material and being arranged in groups spaced circumferentially of said hub, the strip elements of each group having their inner end portions clustered and slip fit to said hub and their outer end portions projected in a relatively spaced relation and curved in a direction away from that direction in which the hub is turned to advance said strips to engagement with a surface to be sanded or buffed, the projected portions of said strip-like elements having the characteristic of flexing yet being substantially self-sustaining in the spaced position they are caused to assume, said hub including a molded cup-shaped hub portion including a thin walled base and a relatively thick peripheral wall structure, said wall struture having slots in its outer peripheral surface arranged to open at one end from the lip of the cup and being closed to its opposite end by a portion of the cup base, said slots being formed to provide for friction fit of the clustered inner end portions of a group of said strip-like elements on application thereof to said slots through the open end thereof and slip fit means applied to retain said groups of strip-like elements in said slots.

Claim 8

A sanding or buffing device as in claim 4 wherein said strip-like elements are arranged in groups with each group being anchored in one of said slots to be pinched in frictional engagement with each other and with said hub portion by wall portions of the slot to which they are applied.

Claim 9

A sanding or buffing device as in claim 5 characterized bysaid strip-like elements in said groups being stacked one upon the other and presenting abrasive surfaces which are commonly directed, inner end portions of said strips being retained against displacement in a sense outwardly of said hub by means including a base portion of said cup-shaped hub portion and means capping the open ends of said slots.

Claim 10

A sanding or buffing device comprising a hub, strip-like elements anchored at one end to said hub and projecting generally radially thereof in a circumferentially spaced relation, said strip-like elements including an abrasive material to at least one surface thereof and their projected portions having the characteristic of flexing yet being substantially self-sustaining in the position in which they are caused to assume, said hub being characterized by a cup-shaped hub portion including a base and a relatively thick wall structure, said wall structure having slots in its outer peripheral surface arranged to open at one end from the lip of the cup and being closed to its opposite end by a portion of the base of said cup, said slots being formed to provide for a slip fit of portions of said strip-like elements therein through the open end thereof, means being applied to retain strip-like elements in said slots, said strip-like elements being arranged in groups with each group being anchored in one of said slots to be pinched in frictional engagement with each other and with the hub portion by wall portions of the slot to which they are applied, the said strip-like elements in said groups being stacked one upon the other and presenting abrasive surfaces which are commonly directed, inner end portions being retained against displacement in a sense outwardly of said hub by means including a base portion of said cup-shaped hub portion, said retaining means for said strip-like elements including means capping the open ends of said slots, portions of said strips which are inserted in said slots having notches in opposite edges thereof and said cap means and said hub base portion including means which in the assembly thereof will engage in said notches to lock said strip-like elements in place.

Claim 11

A sanding or buffing device comprising a hub, strip-like elements anchored at one end to said hub and projecting generally radially thereof in a circumferentially spaced relation, said strip-like elements including an abrasive material to at least one surface thereof and their projected portions having the characteristic of flexing yet being substantially self-sustaining in the position in which they are caused to assume, said hub being characterized by a cup-shaped hub portion including a base and a relatively thick wall structure, said wall structure having slots in its outer peripheral surface arranged to open at one end from the lip of the cup and being closed to its opposite end by a portion of the base of said cup, said slots being formed to provide for a slip fit of portions of said strip-like elements therein through the open end thereof, means being applied to retain strip-like elements in said slots, said strip-like elements being arranged in groups with each group being anchored in one of said slots to be pinched in frictional engagement with each other and with the hub portion by wall portions of the slot to which they are applied, the said strip-like elements in said groups being stacked one upon the other and presenting abrasive surfaces which are commonly directed, inner end portions being retained against displacement in a sense outwardly of said hub by means including a base portion of said cup-shaped hub portion, said retaining means for said strip-like elements including means capping the open ends of said slots, portions of said strips which are inserted in said slots having notches in opposite edges thereof and said cap means and said hub base portion including means which in the assembly thereof will engage in said notches to lock said strip-like elements in place.

Claim 12

A sanding or buffing device comprising a hub, strip-like elements anchored at one end of said hub and projecting generally radially thereof in a circumferentially spaced relation, said strip-like elements including an abrasive material to at least one surface thereof an projected portions having the characteristic of flexing yet being substantially self-sustaining in the position they are caused to assume, said hub being comprised of a first cup-shaped hub portion having slots in its periphery in which are anchored inner end portions of said strip-like elements and a second cup-shaped element constituting a cap portion for said first cup-shaped element, there being means included in said cap portion and in said first cup-shaped portion, at the base thereof, for inhibiting displacement of said strip-like elements from said hub.

Claim 13

A sanding or buffing device comprising a hub, strip-like elements anchored at one end of said hub and projecting generally radially thereof in a circumferentially spaced relation, said strip-like elements including an abrasive material to at least one surface thereof an projected portions having the characteristic of flexing yet being substantially self-sustaining in the position they are caused to assume, said hub being comprised of a first cup-shaped hub portion having slots in its periphery in which are anchored inner end portions of said strip-like elements and a second cup-shaped element constituting a cap portion for said first cup-shaped element, there being means included in said cap portion and in said first cup-shaped portion, at the base thereof, for inhibiting displacement of said strip-like elements from said hub.

Claim 14

A sanding of buffing device comprising a hub, strip-like elements anchored at one end to said hub and projecting generally radially thereof in a circumferentially spaced relation, said strip-like elements including an abrasive material to at least one surface thereof and their projected portions having the characteristic of flexing yet being substantially self-sustaining in the position they are caused to assume, said hub being comprised of two cup-shaped elements, one of which is disposed within the other, the outer of said cup-shaped elements having slots spaced circumferentially about its periphery and extending longitudinally thereof, said slots opening at one end from the lip of said outer cup-shaped element and being closed to the other end by portions of the base of said cup-shaped element and said strip-like elements having inner end portions fit within said slots and said cup-shaped elements and said strip-like elements having portions interengaging in a slip fit assembly thereof to lock said strip-like elements against displacement from said hub.

Claim 15

A sanding of buffing device comprising a hub, strip-like elements anchored at one end to said hub and projecting generally radially thereof in a circumferentially spaced relation, said strip-like elements including an abrasive material to at least one surface thereof and their projected portions having the characteristic of flexing yet being substantially self-sustaining in the position they are caused to assume, said hub being comprised of two cup-shaped elements, one of which is disposed within the other, the outer of said cup-shaped elements having slots spaced circumferentially about its periphery and extending longitudinally thereof, said slots opening at one end from the lip of said outer cup-shaped element and being closed to the other end by portions of the base of said cup-shaped element and said strip-like elements having inner end portions fit within said slots and said cup-shaped elements and said strip-like elements having portions interengaging in a slip fit assembly thereof to lock said strip-like elements against displacement from said hub.

Claim 16

A device as in claim 9 characterized by said cup-shaped elements having a slip fit relation and formed to lock one relative the other in a slip fit assembly thereof.

Claim 17

A device as in claim 10 characterized by means for further interconnecting said cup-shaped elements as they are disposed one within the other providing means for mounting of said device to a driving medium for rotating said device in application of said strip-like elements to a surface to be sanded or buffed.