Leg extension assembly

Details Leg extension assembly Leg extension assembly

1994-07-06

1996-06-18

Chotkowski, Karen J.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

182108, 2481882, E06C 700

Patent

active

055268986

ABSTRACT:
The present invention relates to leg extension assembly comprising an outer sleeve member having a box leg member disposed therein, a telescopically collapsible inner leg member slidably mounted within said sleeve member, means for connecting said box leg member to said inner leg member, said means including a spring element which biases the inner leg member away from the box leg, and locking means for locking said inner leg at a selected extended length. The leg extension assembly may be incorporated into a leg element, or in the alternative, may be attached or otherwise affixed to an existing leg, such as an existing leg of, for example, a ladder, scaffold, sawhorse, table or chair by any means well known in the art.

REFERENCES:
patent: 1177069 (1916-03-01), Verow et al.
patent: 1259239 (1918-03-01), Jecklin
patent: 1290690 (1919-01-01), Watson
patent: 1733338 (1929-10-01), Enke
patent: 2608794 (1952-09-01), Matter
patent: 2911134 (1959-11-01), Derby et al.
patent: 4037367 (1978-02-01), Wright
patent: 4607726 (1986-08-01), Davis et al.

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