Strenghtened plastic dolly

Details Strenghtened plastic dolly Strenghtened plastic dolly

1987-10-13

1989-04-18

Mitchell, David M.

Land vehicles

Wheeled

Body with bracketed-type or nonsuspended axles

108 561, 108901, 403231, B62B 302

Patent

active

048220663

ABSTRACT:
An improved plastic dolly is disclosed. The plastic dolly includes a pair of longitudinal side members and a pair of transverse end members coupled by lap joints to form a preferably rectangular frame. The various members are formed of high density polyethylene and are strengthened by ribs. The lap joints are rabbeted to form stronger lap joints. The longitudinal side members are strengthened by disposing a metal bar in a groove at the outside edge of the longitudinal side members, and the transverse end members are strengthened by forming its ribs in a pyramidal or triangular shape toward the center of the transverse end members.

REFERENCES:
patent: 930078 (1909-08-01), Mix
patent: 981372 (1911-01-01), Brodt
patent: 1184079 (1916-05-01), D'Arcy
patent: 2414277 (1947-01-01), Shepard
patent: 3814778 (1974-06-01), Hosoda et al.
patent: 3902692 (1975-09-01), Skinner
patent: 4316419 (1982-02-01), Cupido
patent: 4720115 (1988-01-01), Rehrig

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