Scissors lift apparatus

Details Scissors lift apparatus Scissors lift apparatus

1988-07-25

1990-06-05

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Having transpositioning base and erecting means

182141, 187 18, E04G 122, E04G 134

Patent

active

049305980

ABSTRACT:
A scissors lift apparatus having a wheeled tube chassis and a platform connected together by one or more scissors arm assemblies, each scissors arm assembly including a center arm and two outside support arms pivotally connected at their longitudinal midpoint, adjacent scissors arm assemblies connected in series at the ends of the center arms and at the ends of the outside support arms, a hydraulic cylinder pivotally connected to the chassis and pivotally connected to the pivot axis of the lowermost scissors arm assembly, the pivot connection between adjacent outside support arms comprising common castings, each casting having a pair of longitudinally extending, longitudinally offset ears, the ears of one casting engaged and pinned with the ears of a second axially rotated casting.

REFERENCES:
patent: 93877 (1869-08-01), Haasz
patent: 2734519 (1956-02-01), Widdowson
patent: 3373844 (1968-03-01), Schafer
patent: 3435570 (1969-04-01), Berry
patent: 3628771 (1971-12-01), Egeland
patent: 3877544 (1975-04-01), McCollum
patent: 3889778 (1975-06-01), Dotts
patent: 3920096 (1975-11-01), Fisher
patent: 3982718 (1976-09-01), Folkenroth
patent: 4088203 (1978-05-01), Smith
patent: 4130178 (1978-12-01), Smith, Jr.
patent: 4175644 (1979-11-01), Sikli
patent: 4375248 (1983-03-01), Kishi
patent: 4657111 (1987-04-01), Tremblay
"Grove Manlift.RTM. Self Propelled Arial Work Platforms-SM 2033E, SM 2633E".
"Grove Nugget.TM. Manlift", Feb. 1988.
"Mark Industries J Series Scissor Lifts".
"SL/A Series Snorkelift.RTM. Rough Terrain Scissor Lift".
"Sky Climber Scissors Lift Family SCI-Series 21, 22, 26, 31, 37 and 47".

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