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US 5,045,091 AGranted
Method of making rotary brush with removable brush elements
AssigneeMinnesota Mining and Manufacturing Company
InventorsGerald R. Abrahamson, Ernest J. Duwell
Life of this patent
Estimating the term…
Abstract
A rotary brush with removable brush elements is provided. The brush elements are disposed on a hub in a radial display. The brush elements include a resiliently flexible element which permits the brush to deflect at a greater angle from a rest position than the angle of deflection of the bristles of the brush from a normal position when the hub is rotated with the bristles in contact with the workpiece.
Claims4
Method of making a brush element, said method comprising the steps of:
- (a) forming a dead soft, cold rolled steel plate to provide a U-shaped metal channel having sidewalls extending in the same direction from a channel bottom;
- (b) folding a segment of polymer reinforced fabric having opposite terminal ends at its longitudinal center to form a temporary looped end with the folded portions of the fabric touching between the looped end and the terminal ends of the fabric;
- (c) fastening together the touching folded portion of the fabric to provide a permanent looped end and unfastened terminal ends;
- (d) adhesively bonding one terminal end of the fabric segment over each opposite sidewall of said U-shaped metal channel with the fabric adjacent the exterior of the metal channel so that the permanent loop projects from said channel bottom in an opposite direction as said sidewalls;
- (e) inserting into said U-shaped channel a plurality of filaments folded at their midportion;
- (f) locking the folded filaments into the channel by placing a core rod over the folded midportion of said folded filaments;
- and,
- (g) crimping the metal channel locked core rod and filament midportions inside the metal channel to provide said brush element.
5 more elements
Method of making a brush element, said method comprising the steps of:
- (a) folding a segment of polymer reinforced fabric having opposite terminal ends at its longitudinal center to form a temporary looped end with the folded portions of the fabric touching between the looped end and the terminal ends of the fabric;
- (b) fastening together the touching folded portions of the fabric to provide a permanent looped end and touching terminal ends;
- (c) assembling a stack comprised of sheets having a bundle of filaments between each of said sheets with the touching terminal ends of said fabric segment within the stack;
- and
- (d) mechanically fastening together the sheets, filaments and fabric ends in said stack to provide said brush element.
2 more elements
Dependencies are inferred from the claim text.