Air compressor with inlet control mechanism and automatic...

Details Air compressor with inlet control mechanism and automatic... Air compressor with inlet control mechanism and automatic...

2006-08-08

2006-08-08

Freay, Charles G. (Department: 3746)

Pumps

With condition responsive pumped fluid control

Having timer or delay means for fluid controller

C417S295000, C417S298000, C417S441000, C137S492500

Reexamination Certificate

active

07086841

ABSTRACT:
An automatic inlet control mechanism and air compressor unit include a valve cavity and valve outlet. The valve cavity includes a valve control chamber and valve inlet chamber. A valve piston assembly is positioned between the valve control chamber and the valve inlet chamber to prevent the flow of air between therebetween. The valve outlet allows air to flow from the valve inlet chamber into the compressor unit. The valve piston assembly prevents air from flowing from the valve inlet chamber to the valve outlet when the compressor unit is not drawing air. A vent passageway allows air to flow between the valve control chamber and the compression cylinder inlet when compression is begun at the start-up of the compressor unit or at the loading of the idling compressor unit. A vent orifice restricts the flow of air from the valve control chamber to the compression cylinder inlet.

REFERENCES:
patent: 3195805 (1965-07-01), Cholvin et al.
patent: 3834837 (1974-09-01), Weldon et al.
patent: 4089623 (1978-05-01), Hofmann, Jr.
patent: 5388967 (1995-02-01), Firnhaber et al.
patent: 5411375 (1995-05-01), Bauer
patent: 5456582 (1995-10-01), Firnhaber et al.
patent: 5540558 (1996-07-01), Harden et al.
patent: 2002/0155007 (2002-10-01), Virgilio

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