Double-headed piston type compressor

Details Double-headed piston type compressor Double-headed piston type compressor

2008-01-29

2011-11-01

Freay, Charles (Department: 3746)

Pumps

Three or more cylinders arranged in parallel, radial, or...

C417S512000, C092S071000

Reexamination Certificate

active

08047810

ABSTRACT:
A double-headed piston type compressor connected with an external device is provided. The compressor includes a plurality of cylinder bore pairs, double-headed pistons, a first rotary valve, a second rotary valve, first suction passages, and second suction passages. In each cylinder bore pair, a first time period from a first top dead center timing, which is timing when the double-headed piston reaches a top dead center in a first compression chamber, to a first communication start timing, which is timing when a first introduction passage starts to communicate with a first suction passage, is different from a second time period from a second top dead center timing, which is timing when the double-headed piston reaches a top dead center in a second compression chamber, to a second communication start timing, which is timing when the second introduction passage starts to communicate with a second suction passages.

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English Summary of JP Notice of Allowance mailed on Mar. 22, 2011 corresponding to JP Application No. 2007-024271.

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