Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1980-08-05
1982-07-13
Weakley, Harold W.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
251159, 251174, F16K 336
Patent
active
043389600
ABSTRACT:
The invention relates to guillotine dampers, particularly to those which are used to isolate a section of ductwork without the entire system requiring to be made inoperative. Known dampers of this kind suffer from the disadvantage that a satisfactory seal is difficult to establish around the periphery of the damper blade with the result that it can be hazardous in the isolated section if the remainder of the ductwork system is carrying toxic or otherwise dangerous fluids. According to the present invention, an auxiliary seal is provided in the form of first and second sealing surfaces extending around the periphery of the plane of movement of the blade, which are urged towards each other and into sealing engagement with the blade when in its closed position by means of a frame. The frame is continuously urged to the sealing position by means of devices. Cams act on the frame and are rotatable to selectively overcome the bias of the devices and withdraw the frame to release the damper blade for opening.
REFERENCES:
patent: 1998081 (1935-04-01), Gerlich
patent: 2156967 (1939-05-01), Brosios
patent: 2702178 (1955-02-01), Scholl
patent: 3047024 (1962-07-01), Schuller
patent: 3547140 (1970-12-01), Hastings
patent: 3741522 (1973-06-01), Frolich
patent: 4163458 (1979-08-01), Bachmann
patent: 4278236 (1981-07-01), Janich
Foster Wheeler Energy Corporation
Naigur Marvin A.
Weakley Harold W.
Wilson John E.
LandOfFree
Guillotine type damper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Guillotine type damper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Guillotine type damper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-200313