Street sweeper drag shoe

Details Street sweeper drag shoe Street sweeper drag shoe

1983-09-29

1984-12-25

Coe, Philip R.

Brushing, scrubbing, and general cleaning

Attachments

For a vacuum cleaner

15 83, E01H 104

Patent

active

044894589

ABSTRACT:
A street sweeper drag shoe, formed of a horizontally elongated rubber-like strip, having a bottom ground-engaging edge surface, is provided with vertically arranged wear resisting pins embedded within the strip, with the lower ends of the pins exposed at, and flush with, the edge surface. Each pin is formed of a thin wall steel tube filled with a closely packed matrix of particles of hard metal carbide surrounded by a soft, heat conductive, copper-like binder. The tube outer wall surface is provided with surface irregularities, such as knurls or threads. The pins are each forcibly driven endwise into smaller cross-sectional size holes that are pre-formed in the strip and that open at the strip bottom surface. Thus, the strip, rubber-like material resiliently yields as the pin is inserted, and then resiliently grips and interlocks with the tube outer wall surface.

REFERENCES:
patent: 3997934 (1976-12-01), Toews
patent: 4037289 (1977-07-01), Dojan
patent: 4450601 (1984-05-01), Shwayder

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