Safety railing

Details Safety railing Safety railing

2007-02-13

2007-02-13

Chin-Shue, Alvin (Department: 3634)

Fire escape, ladder, or scaffold

Ladder with land vehicle

C182S113000, C182S106000, C280S164100, C280S166000

Reexamination Certificate

active

10794642

ABSTRACT:
A vertically adjustable safety railing system for obtaining safety railing access to the tops of mobile equipment of various heights such as tank trucks. The safety railing apparatus generally includes a plurality of posts, a railing, and activating means in communication with an actuating means. The safety railing having a collapsed condition and a vertically upright condition. The posts are pivotally mounted to mounting plates as well as connected to the railing so that when the posts are rotated to a vertically upright condition, the railing is elevated providing a railing to assist a person walking on top of the tank of a truck. The activating means is engaged by a cover plate hinged to a ladder disposed at the rear of the tank truck. Opening the cover plate to access the ladder places the activating means in a passing condition and actuates the actuating means to pivot the railing system to its upright condition. Closing the cover plate places the activating means in its normally non-passing condition and returns the railing system to its collapsed condition.

REFERENCES:
patent: 4371056 (1983-02-01), Anglade
patent: 4613155 (1986-09-01), Greenwood
patent: 4936407 (1990-06-01), Brock et al.
patent: 5343977 (1994-09-01), Bryan
patent: 5547040 (1996-08-01), Hanser et al.
patent: 6068277 (2000-05-01), Magnussen
patent: 6598704 (2003-07-01), Hansen
patent: 6739349 (2004-05-01), Kastenschmidt et al.
patent: 2003/0020253 (2003-01-01), Bosman et al.

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