Tripodal support

Details Tripodal support Tripodal support

1986-09-12

1989-01-17

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

With handrail or guard for ladder

182107, 182169, 182172, E06C 114, E06C 1383, E06C 718

Patent

active

047982624

ABSTRACT:
This invention relates to tripodal support structures and more particularly to a three-legged folding step-ladder having outrigger-type support extensions on the two front support legs, a rear support member having a single ground contact point, and independently extendable and retractable safety hand rails. The support legs of the instant invention contact the ground at points spaced apart from one another to form an equilateral triangle when viewed from above.

REFERENCES:
patent: 5451 (1873-06-01), Hays
patent: 361212 (1887-04-01), Dormitzer
patent: 1045358 (1912-11-01), Aragall
patent: 1385319 (1921-07-01), Enke
patent: 2010588 (1935-08-01), Gooden
patent: 2167157 (1939-07-01), Muehlberg
patent: 2614744 (1952-10-01), Hedglon
patent: 2640641 (1953-06-01), Tepper
patent: 2656088 (1953-10-01), White
patent: 3508628 (1970-04-01), Conrad
patent: 3856112 (1974-12-01), Stewart
patent: 4011926 (1977-03-01), Larson

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