Electrohydraulic method and apparatus

Details Electrohydraulic method and apparatus Electrohydraulic method and apparatus

1990-01-04

1991-05-28

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417390, 425145, F04B 3502

Patent

active

050189506

ABSTRACT:
An injection molding apparatus where the position of the auger can be accurately determined from the position of the electric linear motor. The electric linear motor is in direct communication with a first hydraulic piston and cylinder. The first hydraulic piston and cylinder is in hydraulic communication with a second hydraulic piston and cylinder. The second hydraulic piston and cylinder is in direct communication with the auger. Thereby, the position of the auger can be accurately controlled by controlling the position of the electric linear motor.

REFERENCES:
patent: 3700360 (1972-10-01), Shaddock
patent: 4229143 (1980-10-01), Pucher et al.
patent: 4274823 (1981-06-01), Stanciu et al.
patent: 4592712 (1986-06-01), Gutjahr
patent: 4735564 (1988-04-01), Sasaki et al.
patent: 4752201 (1988-06-01), Kauffman et al.
patent: 4755123 (1988-07-01), Otake
patent: 4895505 (1990-01-01), Inaba et al.

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