Vacuum relief and access door assembly

Details Vacuum relief and access door assembly Vacuum relief and access door assembly

1978-11-01

1980-01-22

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137559, 251337, F16K 1502

Patent

active

041845099

ABSTRACT:
A vacuum relief and access door assembly, for use on a duct downstream of a fire or control dampers, comprises a frame including a duct facing surface with a seal member thereon, a closure member having side edges in sealing engagement with the seal member, and cooperative retaining members mounted on the frame and closure member and resiliently urging the closure member into sealing engagement with the seal member, yielding to allow the closure member to displace toward the duct to allow air flow thereby for vacuum relief and returning into sealing engagement with the seal member said retaining members being releasable for removal of said closure member.

REFERENCES:
patent: 2452612 (1948-11-01), Swenberg
patent: 3782411 (1974-01-01), Turner
patent: 3899156 (1975-08-01), McCabe
patent: 4140151 (1979-02-01), Van Becelaere

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-330171