Fire escape – ladder – or scaffold – Wall- or floor-attached – Independent rung or step
Patent
1985-05-13
1986-08-12
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Independent rung or step
182187, A01M 3102
Patent
active
046050973
ABSTRACT:
A portable tree stand comprised of two main runners (10) attached to four extension arms (11) with bolts (12) and fastened by wing nuts (13). The main runners (10) have a slot (21) to receive three platform boards (14). The extension arms (11) are secured to the diverging tree branches (15,16,17) with rope (18).
Installation and access is accomplished by securing the rungs (19) to the diverging tree branches (15,17) with rope (18).
The portable tree stand compacts into a convenient package by removing the outermost bolt (12) on each end of the main runner (10) and folding the extension arms (11) inward.
REFERENCES:
patent: 740740 (1903-10-01), Brown
patent: 740741 (1903-10-01), Brown
patent: 1250699 (1917-12-01), Sturgel
patent: 1823385 (1931-09-01), Barker
patent: 4139080 (1979-02-01), Wells
patent: 4290504 (1981-09-01), Cuba
patent: 4445591 (1984-05-01), Mitchell
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