Apparatus for precisely controlling the feeding of viscous and n

Details Apparatus for precisely controlling the feeding of viscous and n Apparatus for precisely controlling the feeding of viscous and n

1995-05-12

1998-01-13

Thorpe, Timothy

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

417415, 417539, F04B 4906

Patent

active

057072124

ABSTRACT:
Precise control of the vertical motion of a piston or series of pistons within a cylindrical housing of a positive displacement pumping device to precisely set the discharge volume of viscous and non-viscous liquid products from the pistons. Uses a linear ball bearing screw actuated by an electronically-controlled servo motor. An electronic pulse generator incorporated in the servo motor provides pulses which are counted and used to set the maximum range of movement of the pistons.

REFERENCES:
patent: 2433664 (1947-12-01), Hantjopoulos
patent: 4074611 (1978-02-01), Hereth
patent: 4493614 (1985-01-01), Chu et al.
patent: 4687426 (1987-08-01), Yoshimura
patent: 4919596 (1990-04-01), Slate et al.
patent: 5154586 (1992-10-01), Rudick
patent: 5253981 (1993-10-01), Yang et al.
patent: 5286177 (1994-02-01), Johann
patent: 5312233 (1994-05-01), Tanny et al.

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