Vacuum valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C251S198000

Reexamination Certificate

active

07731156

ABSTRACT:
A vacuum valve including a valve housing two valve openings, a closure member having two closure plates, a transverse drive unit for adjusting the closure member between an open position and an intermediate position where the closure plates cover the valve openings, a first longitudinal drive unit for adjusting the closure member between the intermediate position and a first closed position, and a second longitudinal drive unit for adjusting the closure member between the intermediate position and a second closed. Each longitudinal drive unit includes a plurality of actuating elements which are guided into the vacuum area of the valve housing. These actuating elements are adjustable by driving elements between a retracted, passive position where their actuating ends are raised from the closure member and an advanced, active position where their actuating ends are pressed against the closure member and press the respective closure plate against the respective valve seat.

REFERENCES:
patent: 2786644 (1957-03-01), Koppl
patent: 3170668 (1965-02-01), Aulisa
patent: 5566922 (1996-10-01), Tanaka et al.
patent: 5577707 (1996-11-01), Brida
patent: 6390448 (2002-05-01), Krocker et al.
patent: 6776394 (2004-08-01), Lucas
patent: 6913243 (2005-07-01), Tomasch
patent: 6966538 (2005-11-01), Hayashi et al.
patent: 2004/0079915 (2004-04-01), Contin et al.
patent: 2004/0129910 (2004-07-01), Ishigaki
patent: 2006/0185743 (2006-08-01), Lucas et al.
patent: 2 283 375 (1974-07-01), None
patent: 64-55478 (1989-03-01), None
patent: 10-231939 (1998-09-01), 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

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

Rate now

     

Profile ID: LFUS-PAI-O-4204035

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