Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent
1994-11-28
1996-05-21
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Self-sustaining
Scaffold horse
182151, 248162, B27B 2100
Patent
active
055180825
ABSTRACT:
A new kind of saw horse comprising two major assemblies that separate into two flat pieces for easy storage and handling. Each assembly has two outside legs which meet an upper beam at a slight angle to the vertical. A vertical center support leg on one of the two assemblies gives additional weight-bearing capacity. Each assembly has an extra lower tie beam that runs horizontally, tying the legs together. The two major assemblies are arranged in a cross format in which each major assembly with its two or three legs forms a ninety-degree angle (right angle) with the other assembly. This arrangement allows the Invention to give a higher degree of safety than the conventional horse, as well improved support for heavy objects.
REFERENCES:
patent: 1039134 (1912-09-01), Jenkins
patent: 1738276 (1929-12-01), Barney
patent: 4433753 (1984-02-01), Watson
patent: 4790411 (1988-12-01), Ottoson
patent: 4819762 (1989-04-01), Osborne, Sr.
patent: 4951782 (1990-08-01), Hanson
patent: 5170861 (1992-12-01), Turner
patent: 5305850 (1994-04-01), McQuiston
patent: 5335753 (1994-08-01), Campbell
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