Air compressor

Details Air compressor Air compressor

1995-04-28

1997-07-15

Thorpe, Timothy

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417440, 417557, F04B 4902

Patent

active

056477317

ABSTRACT:
An air compressor in which oil loss due to the pressure in the cylinder becoming negative during an unload can be prevented, thereby protecting an outlet-side unloader valve. An air leak hole with a specific ventilating resistance is formed between a valve body and a valve seat of an intake-side unloader valve when the intake-side unloader valve is closed. Also, a valve seat portion is provided, which cuts off a sliding portion of the outlet-side unloader valve from the outlet passage when the outlet-side unloader valve is opened.

REFERENCES:
patent: 3204857 (1965-09-01), Weller
patent: 3578883 (1971-05-01), Cheney
patent: 4229146 (1980-10-01), Errett
patent: 4370103 (1983-01-01), Tripp
patent: 4432698 (1984-02-01), Shirakuma et al.
patent: 4993922 (1991-02-01), Lauterbach et al.
patent: 5364240 (1994-11-01), Salecker
patent: 5503537 (1996-04-01), Schlossarczyk et al.

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