Pumps – Expansible chamber type – Fluid serially moved to opposite side of pumping member
Reexamination Certificate
2005-08-03
2008-08-12
Kramer, Devon (Department: 3746)
Pumps
Expansible chamber type
Fluid serially moved to opposite side of pumping member
C062S050600, C062S050700, C417S256000, C417S434000, C417S435000, C417S553000, C417S556000, C417S901000
Reexamination Certificate
active
07410348
ABSTRACT:
A pumping/compressing apparatus for use in a fluid handling system transferring a fluid from one location, e.g., a tank, to another location or to an end use is provided. The apparatus basically includes a motor and a multistage, e.g., two stage, device including at least one reciprocating piston, an inlet stage chamber, an outlet stage chamber, an inlet, and an outlet. The piston is arranged to be reciprocated at multiple, e.g., respective first and second, speeds. The second speed is higher than the first speed, whereupon when the piston is reciprocated at the first speed the device effectively pumps liquid or mostly liquid to the outlet. When the piston is reciprocated at the second speed the device effectively compresses gas or mostly gas fluid and provides it to the outlet. A blowby port may be provided to provide blowby fluid back to the tank or the device.
REFERENCES:
patent: 3181473 (1965-05-01), Duron
patent: 4447195 (1984-05-01), Schuck
patent: 5243821 (1993-09-01), Schuck et al.
patent: 5411374 (1995-05-01), Gram
patent: 5575626 (1996-11-01), Brown et al.
patent: 5884488 (1999-03-01), Gram et al.
patent: 5947854 (1999-09-01), Kopko
patent: 6171074 (2001-01-01), Charron
patent: 6273674 (2001-08-01), Charron
patent: 6296690 (2001-10-01), Charron
patent: 6530761 (2003-03-01), Chalk et al.
patent: 6640556 (2003-11-01), Ursan et al.
patent: 6659730 (2003-12-01), Gram et al.
patent: 2005/0163642 (2005-07-01), Duron
patent: 2005/0180869 (2005-08-01), Ursan et al.
Chalk David Jonathan
Farese David John
Air Products and Chemicals Inc.
Gourley Keith D.
Kramer Devon
Weinstein Leonard J
LandOfFree
Multi-speed compressor/pump apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-speed compressor/pump apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-speed compressor/pump apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3995795