Duffy Wilson resumes & CV records
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Duffy Wilson
Location:
United States
Duffy WilsonPortland, ME
Duffy Wilson Phones & Addresses
South Portland, ME
Westbrook, ME
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Us Patents
Street Sweeping Drag Shoe
US Patent:
4951342, Aug 28, 1990
Filed:
Mar 13, 1989
Appl. No.:
7/321916
Inventors:
Duffy Wilson - Westbrook ME
International Classification:
E01H 104
US Classification:
15246
Abstract:
A street sweeper drag shoe formed of an essentially planar, elongated strip of an elastomeric material. Such material being of sufficient hardness and resiliency that no reinforcing strips are required for the drag shoe to retain its shape. Especially, the drag shoe can be manufactured of polyurethane having a horizontal platform directed toward the inside of the drag shoe to help a cylindrical sweeper brush or other sweeper mechanism to move collected road debris up into the sweeper vehicle's hopper.
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