Fluid compressor having a molded helical blade

Details Fluid compressor having a molded helical blade Fluid compressor having a molded helical blade

1993-06-18

1994-11-29

Bertsch, Richard A.

Rotary expansible chamber devices

Helical working member

418153, 418179, 425573, 425577, 425DIG58, 264318, 2643288, F01C 2108

Patent

active

053684575

ABSTRACT:
A fluid compressor has a cylinder (17), a rotary rod (21), and a helical blade (33) that defines work chambers (44) between the cylinder and the rod. The compressor successively compresses and conveys a fluid from a suction end to a discharge end through the work chambers according to the rotation of the rod. The continuous helical blade is formed by pressurizing and injecting synthetic resin material such as tetrafluoroethylene-perfluoroalkylvinylether polymer resin into a mold through two gates (39), so that a weld line (43) of the blade is located in an intermediate region between a suction pressure region and a discharge pressure region of the blade.

REFERENCES:
patent: 2401189 (1946-05-01), Quiroz
patent: 4871304 (1989-10-01), Iida et al.
patent: 4994220 (1991-02-01), Gutjahr et al.
patent: 5122052 (1992-06-01), Trame et al.

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