Pump unit with adjustable piston stroke length

Details Pump unit with adjustable piston stroke length Pump unit with adjustable piston stroke length

1988-11-30

1991-06-18

Smith, Leonard E.

Pumps

Motor driven

Relatively movable pumping members driven by relatively...

417347, 417900, F04B 1502, F04B 128

Patent

active

050245848

ABSTRACT:
A pump unit comprising co-operating, push-pull connected reciprocating pumps for the pumping in portions of contents to packing containers on a packing machine. The reciprocating pumps (1) each comprise a control piston (4) connected to the pump piston (6) in control cylinders (18), which are joined together in pairs by means of a connecting pipe (20). The pipe is provided with a flow regulating valve (21) for regulating the flow rate of the hydraulic oil and hence the piston speed. The quantity of hydraulic oil in the connecting pipe can be regulated with the help of a supply tank (23) so that the length of stroke of the pistons can be adjusted.

REFERENCES:
patent: Re26820 (1970-03-01), Bennett
patent: 1767404 (1930-06-01), Schaer
patent: 2807215 (1957-09-01), Hawxhurst
patent: 3516761 (1970-06-01), Scroggins
patent: 3718409 (1973-02-01), Brandenberg et al.
patent: 4646868 (1987-03-01), Rosell
patent: 4759695 (1988-07-01), Bordini
patent: 4773305 (1988-09-01), Nissels

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