Vertically movable safety railing

Details Vertically movable safety railing Vertically movable safety railing

1989-08-22

1991-07-02

Chotkowski, Karen J.

Fire escape, ladder, or scaffold

Safety device, platform associated

Railing

182141, E04G 118, E04G 126

Patent

active

050279220

ABSTRACT:
A vertically movable safety railing system for providing a safety railing enclosed area on top of mobile equipment such as railroad tank cars, tank trucks, and the like, characterized by an elevated stationary platform and a safety railing assembly mounted relative to the platform. The safety railing assembly includes a vertically movable mast, a cantilever arm attached to the mast, a vertical movement unit and an open-bottomed safety railing cage secured to the arm. The vertical movement unit includes either a pneumatic or electric motor operated jack, or alternatively a hydraulic piston-cylinder assembly. These vertical movement units act as means for vertically moving the mast relative to the structural member or platform between an elevated position where the safety railing cage is elevated above the mobile equipment and a lower position where the safety railing frame substantially contacts the equipment, enclosing a portion of the top of the equipment to provide a safety railing enclosed area.

REFERENCES:
patent: 2726123 (1955-12-01), Mathews
patent: 4371056 (1983-02-01), Arglade
patent: 4572328 (1986-02-01), Benko
patent: 4679657 (1987-07-01), Bennett et al.
patent: 4787111 (1988-11-01), Pacek et al.

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