Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction
Reexamination Certificate
2005-05-31
2005-05-31
Keasel, Eric (Department: 3754)
Valves and valve actuation
With means to increase head and seat contact pressure
With positive reduction
C251S062000
Reexamination Certificate
active
06899316
ABSTRACT:
A closure device for a vacuum closure of at least one opening in a wall having a valve place, at least one piston-cylinder unit, at least one carrier unit, at least one cylinder bore hole, at least two sealing rings, and a line. The valve plate is associated with an opening and is displaceable between an open position in which it releases the opening, a position in which it covers the opening but is raised from the wall and a closed position in which it covers the opening and contacts the wall. The at least one piston-cylinder unit serves to displace the valve to the different positions and includes a pneumatically actuated piston. At least one carrier unit is connected to a piston rod which serves to displace the valve to the different positions.
REFERENCES:
patent: 3307574 (1967-03-01), Anderson
patent: 3379405 (1968-04-01), Natho
patent: 3624802 (1971-11-01), Ripert
patent: 3958592 (1976-05-01), Wells et al.
patent: 4157169 (1979-06-01), Norman
patent: 4773440 (1988-09-01), Yanagawa et al.
patent: 6056266 (2000-05-01), Blecha
patent: 6427973 (2002-08-01), Wagner
patent: 196 33 798 (1998-02-01), None
Keasel Eric
Reed Smith LLP
VAT Holding AG
LandOfFree
Closure device for vacuum closure of at least one opening in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Closure device for vacuum closure of at least one opening in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Closure device for vacuum closure of at least one opening in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3436675