Hard insert for ice/snow clearing tool

Details Hard insert for ice/snow clearing tool Hard insert for ice/snow clearing tool

1990-05-29

1991-10-08

Burr, Edgar S.

Excavating

Snow or ice removing or grooming by portable device

Motorized rotary excavating tool

1727011, 299 86, 37242R, E01H 509, E02F 380

Patent

active

050542176

ABSTRACT:
An ice and snow scraping insert includes a cylindrical or slightly conical rear surface portion, a blunt front surface portion, and a smoothly curved transition surface portion interconnecting the front and rear surface portions. The rear surface portion defines an axial length and a diameter, the ratio (L/D) of which is from 0.3 to 0.7.

REFERENCES:
patent: 2796102 (1957-06-01), Schmidt, Jr.
patent: 3493268 (1970-02-01), Bower, Jr.
patent: 4227744 (1980-10-01), Livesay
patent: 4289211 (1981-09-01), Lumen
patent: 4784517 (1988-11-01), Bergqvist

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