Stair track device

Details Stair track device Stair track device

1991-10-28

1992-08-11

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Chute or escape tower for personnel

With ladder

182129, 14 711, E01D 100, E04F 1100

Patent

active

051371146

ABSTRACT:
A stair track device adjustable to correspond with a variety of physically different stairways is shown. The stair track device includes right side rails which slidably engage one another in telescopic fashion to form a rail assembly. Locking pins fix the telescopic position of the rails with respect to one another. A corresponding mirror image left rail assembly is secured in position with respect to the right rail assembly by way of rods removably attached to each rail assembly. Lower and upper support members provide anti-skid support as well as establishing a proper angular relationship between the rail assemblies and the stairway. The rails can be detached from one another collapsed and compactly stored for easy transport to any location.

REFERENCES:
patent: 981613 (1911-01-01), Carter
patent: 1506116 (1924-08-01), Fenn
patent: 2312273 (1943-02-01), Stochmal
patent: 3009183 (1961-11-01), Lay
patent: 3063513 (1962-11-01), Marryatt
patent: 4528711 (1985-07-01), Packer
patent: 4628561 (1986-12-01), Kushniryk
patent: 4712264 (1987-12-01), Voith
patent: 4943048 (1990-07-01), Hentges
patent: 5077852 (1992-01-01), Karlsson

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