Foothold

Details Foothold Foothold

1996-06-25

1998-05-19

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Independent rung or step

182 92, E04F 1900

Patent

active

057525790

ABSTRACT:
A foothold of a manhole, a quay, and the like which is light and easily handled, and which is excellent in corrosion resistance and strength, and which is easily manufactured and inexpensive and can be recycled. The foothold having a U-shape and comprising a tread at front thereof and legs at both sides thereof, wherein said tread and said legs are integrally formed by engineering plastics.

REFERENCES:
patent: 601849 (1898-04-01), Aiken
patent: 2064803 (1936-12-01), Grove
patent: 4100997 (1978-07-01), Peacock
patent: 4241543 (1980-12-01), Foscarini et al.
patent: 4610330 (1986-09-01), Borst
patent: 4655318 (1987-04-01), Bowen
patent: 4660681 (1987-04-01), Zenhausern
patent: 4702349 (1987-10-01), Zenhausern
patent: 4771861 (1988-09-01), Zenhausern et al.
patent: 4778032 (1988-10-01), Takahashi
patent: 4869342 (1989-09-01), Borst

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