Exhaust gas recirculation valve

Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C251S368000

Reexamination Certificate

active

11196050

ABSTRACT:
Mechanical systems having anti-stick mediums applied thereto are provided. In one aspect, exhaust gas recirculation (EGR) valve systems having anti-stick mediums applied thereto are also provided. The anti-stick medium can be applied to any contacting surface, such as but not limited to the valve surface and/or the valve seat surface. The anti-stick medium is intended to prevent the valve surface and the valve seat surface sticking or bonding together, especially with respect to the operation of cooled or cold side EGR systems. If any materials should stick to the anti-stick medium, a portion of the anti-stick medium will break away from the surface, allowing the surface and/or component to function normally. The anti-stick medium can include, without limitation, boron nitride coatings, boron nitride aerosols, boron nitride greases, thin dense chrome platings, perfluoroalkoxy, and combinations thereof.

REFERENCES:
patent: 2056042 (1936-09-01), Fausek et al.
patent: 4106449 (1978-08-01), Matsumoto et al.
patent: 4443172 (1984-04-01), Riley et al.
patent: 4460284 (1984-07-01), Lauterbach et al.
patent: 4612880 (1986-09-01), Brass et al.
patent: 4649703 (1987-03-01), Dettling et al.
patent: 5089237 (1992-02-01), Schuster et al.
patent: 5186135 (1993-02-01), Kovach
patent: 5205170 (1993-04-01), Blechinger et al.
patent: 5249554 (1993-10-01), Tamor et al.
patent: 5277542 (1994-01-01), Nakanishi
patent: 5370364 (1994-12-01), Kenmoku et al.
patent: 5426936 (1995-06-01), Levendis et al.
patent: 5607010 (1997-03-01), Schönfeld et al.
patent: 5655493 (1997-08-01), Enright et al.
patent: 5771873 (1998-06-01), Potter et al.
patent: 5785030 (1998-07-01), Paas
patent: 5904125 (1999-05-01), Enright et al.
patent: 5956947 (1999-09-01), Tanaka et al.
patent: 5998343 (1999-12-01), Ishii
patent: 6101999 (2000-08-01), Ohashi et al.
patent: 6167859 (2001-01-01), Strasser et al.
patent: 6272913 (2001-08-01), Naegele et al.
patent: 2002/0179034 (2002-12-01), Sisken
patent: 2138577 (1995-06-01), None
patent: 35 17 914 (1986-11-01), None
patent: 2049483 (1980-12-01), None
patent: 62000603 (1987-01-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Exhaust gas recirculation 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 Exhaust gas recirculation valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas recirculation valve will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3725518

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.