Brushing – scrubbing – and general cleaning – Machines – Wiping
Patent
1988-10-27
1989-12-26
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Wiping
1523019, 15242, 51378, 403361, 411510, 411913, A47L 1114
Patent
active
048888435
ABSTRACT:
Apparatus for mounting a pad to a rotary floor machine includes an internally threaded drive collar mounted in coaxial relation with a drive shaft. The teeth of the thread on the collar have a sawtooth profile with an inclined lead-in surface and a holding surface. A retainer member in the form of a flanged collar has a cylindrical insert with a plurality of tabs capable of flexing inwardly. The flex tabs are spaced about the insert and have external thread segments, the teeth of which also have a sawtooth profile, for matching engagement with the internal threads of the drive collar. The retainer insert is assembled by pushing it into the drive collar. The lead-in surfaces of the matching threads cam the flex tabs inwardly during assembly so that the sawtooth threads ride over one another. The radial holding surfaces engage to provide substantial holding force for the center of the pad which is clamped between the flanges of the drive collar and the retainer member.
REFERENCES:
patent: 3757378 (1973-09-01), Wakefield
patent: 4365377 (1982-12-01), Todd et al.
patent: 4541207 (1985-09-01), Antonson
patent: 4662024 (1987-05-01), Moensch
patent: 4826379 (1989-05-01), Norden
Page 504 from Engineering Drawing & Graphic Technology, 12th Ed., by Thomas E. French and Charles J. Vierck.
Pages 1326-1327 from Machinery's Handbood, 22nd revised Ed., from Industrial Press.
Lerch Thomas J.
McLeod Rick
Smith Ronald J.
Hako Minuteman, Inc.
Roberts Edward L.
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