Personnel safety device for an underground duct particularly a s

Details Personnel safety device for an underground duct particularly a s Personnel safety device for an underground duct particularly a s

1987-03-30

1988-01-26

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Torso harness

182 36, 272 70, A62B 3500

Patent

active

047211822

ABSTRACT:
The safety device for a person in an underground duct, tunnel or the like, particularly for a person in a sewer pipe, comprises a guide rail attached by a plurality of spaced fasteners to the roof of the duct or tunnel and a traveling body movable on and along the guide rail which is attached with a safety tether to a safety belt worn by the person. The traveling body is a hingedly or pivotally openable and closable end piece device located at or near one end of a safety rod which is provided with a retaining eye for the safety tether and with an end piece handle at its other end.

REFERENCES:
patent: 2478004 (1949-08-01), Newell
patent: 2871915 (1959-02-01), Hogan
patent: 3217833 (1965-11-01), Smith
patent: 3780663 (1973-12-01), Pettit
patent: 3860089 (1975-01-01), Huggett
patent: 4606430 (1986-08-01), Roby
patent: 4607724 (1986-08-01), Hillberg
"Arbeit and Sicherheit", Jan. 1985, p. 4.

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