Needle valve

Details Needle valve Needle valve

2006-01-31

2006-01-31

Rivell, John (Department: 3753)

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

C251S117000, C251S129110, C251S282000

Reexamination Certificate

active

06991212

ABSTRACT:
In a needle valve (1) for a high-pressure gas conduit system consisting of two units (2, 3) which are joined and one of which encloses a stepping motor (8) and the other includes gas flow passages and a gas flow control bore (17), a valve needle (10) is supported in the housing unit so as to be movable by the stepping motor and extends into the gas flow control bore (17) in the other housing unit through a guide passage (18) provided with seals to prevent gas from flowing to the housing unit including the stepping motor (8) between a region of the guide bore (18) and a low pressure region of the needle valve (1) a compensation connection is provided for relief of pressure at the sealing region (43) of the guide bore (18). The needle valve is particularly suitable as an expansion valve in an automotive CO2air conditioning system.

REFERENCES:
patent: 2731031 (1956-01-01), Newhouse
patent: 2994343 (1961-08-01), Banks
patent: 3255775 (1966-06-01), Albro et al.
patent: 3464227 (1969-09-01), Mattheis et al.
patent: 3563508 (1971-02-01), DeLorenzo
patent: 3733050 (1973-05-01), Gordon
patent: 3741441 (1973-06-01), Eberle
patent: 3874629 (1975-04-01), Fontaine
patent: 3941508 (1976-03-01), Worden
patent: 4075928 (1978-02-01), Bitonti
patent: 4374785 (1983-02-01), Wyatt
patent: 4556193 (1985-12-01), Yoshiga
patent: 4687180 (1987-08-01), Simonelli et al.
patent: 5279328 (1994-01-01), Linder et al.
patent: 6044655 (2000-04-01), Ozaki et al.
patent: 6220571 (2001-04-01), Kim et al.
patent: 6460567 (2002-10-01), Hansen et al.
patent: 42 17 835 (1993-12-01), None
patent: 44 16 279 (1995-11-01), None
patent: 195 28 726 (1996-03-01), None
patent: 44 46 605 (1996-06-01), None
patent: 196 24 901 (1997-08-01), None
patent: 296 16 690 (1998-03-01), None
patent: 198 01 201 (1999-07-01), None
patent: 199 18 226 (2000-11-01), None
patent: 200 00 165 (2001-06-01), None
patent: 199 63 549 (2001-08-01), None
patent: 10163931 (2003-07-01), None
patent: 0 607 953 (1994-07-01), None
patent: WO 00/70276 (1999-05-01), None
patent: 09 317922 (1997-12-01), None

Affiliated with

Also associated with

Rating

Needle valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Needle valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Needle valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3600199