Rotary eraser assembly

Details Rotary eraser assembly Rotary eraser assembly

2011-03-15

2011-03-15

Spisich, Mark (Department: 3727)

Brushing, scrubbing, and general cleaning

Implements

Fabric

C015S179000, C015S230000, C015S230170, C015S230190, C451S358000, C451S527000, C451S530000, C451S542000, C451S547000

Reexamination Certificate

active

07904989

ABSTRACT:
A rotary eraser assembly includes a rotary eraser, two discs, a threaded bolt and a nut. The rotary eraser includes, in each of two opposite sides, a cavity in communication with the aperture and at least one recess in the wall of the cavity. Each of the discs includes an annular lip disposed in the cavity in a related one of the sides of the rotary eraser and at least one block disposed in the recess in the related side of the rotary eraser. The threaded bolt is inserted through the rotary eraser and the discs. The nut is engaged with threaded bolt.

REFERENCES:
patent: 1281777 (1918-10-01), Hardy
patent: 1908399 (1933-05-01), Boland et al.
patent: 2384599 (1945-09-01), Case
patent: 6716095 (2004-04-01), Hsu et al.
patent: 2345014 (2000-06-01), None
patent: 88/09707 (1988-12-01), None

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