Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1990-09-06
1992-11-03
Spar, Robert J.
Material or article handling
Vertically swinging load support
Shovel or fork type
172 45, 36416701, 37DIG7, E02F 332
Patent
active
051602393
ABSTRACT:
A control system is adapted to provide substantially linear movement of a work implement. The control system receives signals from at least one control lever and coordinates the movements of the work implement's appendages through coordination of hydraulic cylinders.
REFERENCES:
patent: 3187911 (1965-06-01), Christenson
patent: 3388821 (1968-06-01), White, Jr.
patent: 4332517 (1982-06-01), Igarashi et al.
patent: 4910662 (1990-03-01), Heiser et al.
patent: 4923362 (1990-05-01), Fryk
patent: 5002454 (1991-03-01), Hadnak et al.
Patent Abstracts of Japan, vol. 10, No. 191 (M-495)(2247) Jul. 4, 1986 & JP,A,61 036 426 (Hitachi Const. Mach Co.) Feb. 21, 1986.
Patent Abstracts of Japan, vol. 14, No. 212 (M-969)(4155) May 2, 1990 & JP,A,02 047 432 (Sumitomo Constr. Mach. Co.) Feb. 16, 1990.
Allen William E.
Anderson Paul D.
Bradbury Walter J.
Hadank John M.
League Richard B.
Caterpillar Inc.
Spar Robert J.
Underwood Donald W.
Yee James R.
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