Fluid compressor with vertical longitudinal axis

Details Fluid compressor with vertical longitudinal axis Fluid compressor with vertical longitudinal axis

1993-12-29

1995-02-14

Bertsch, Richard A.

Pumps

Motor driven

Pump within rotary working member

4174103, 418220, F04B 1700

Patent

active

053889690

ABSTRACT:
A fluid compressor has a piston, the axis of which is vertical. The dimensions of the parts of the compressor are determined such that an upward thrust force acting on the piston is substantially equal to or slightly greater than the total weight of rotational parts including the piston and a cylinder. Specifically, a groove formed in the piston has a pitch decreasing gradually from a lower part to an upper part of the piston, and a diameter (.PHI.D1) of a lower shaft portion of the piston, a diameter (.PHI.D2) of a upper shaft portion of the piston, and an inside diameter (.PHI.Dc) of the cylinder have a relationship, (D1.sup.2 +D2.sup.2)>Dc.sup.2.

REFERENCES:
patent: 2953993 (1960-09-01), Strickland et al.
patent: 3164096 (1965-01-01), Hallerback
patent: 4871304 (1989-10-01), Iida et al.
patent: 5028222 (1991-07-01), Iida et al.
patent: 5062778 (1991-11-01), Hattori et al.
patent: 5090874 (1992-02-01), Aikawa et al.
patent: 5125805 (1992-06-01), Fujiwara et al.
patent: 5151021 (1992-09-01), Fujiwara et al.
patent: 5242287 (1993-09-01), Fujiwara
patent: 5249931 (1993-10-01), Fujiwara et al.

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