Container having a manhole cover with a pressure-vacuum relief v

Details Container having a manhole cover with a pressure-vacuum relief v Container having a manhole cover with a pressure-vacuum relief v

1988-02-19

1988-09-06

Hall, George T.

Receptacles

Closures

With condition responsive vent or valve

B65D 5116

Patent

active

047686758

ABSTRACT:
A bulk material container in which a manhole cover has a relief valve. The relief valve includes a resilient spacer ring disposed between a valve seat of the relief valve and a valve plate. A spring urges the valve plate of the relief valve toward the valve seat. When the fluid pressure in the container exceeds a predetermined magnitude, the valve plate is lifted away from the valve seat against the urgency of the spring to vent the fluid in the container to atmosphere. A bulk material container in which a manhole cover has a relief valve. Vacuum relief apertures are formed in a backing plate of the relief valve. The vacuum relief apertures communicate with the fluid in the container and atmosphere. A disc closes the vacuum relief apertures until displaced when the fluid pressure of the fluid within the container is less than atmospheric pressure to provide a path for air under atmospheric pressure to flow into the container through the vacuum relief apertures.

REFERENCES:
patent: 2152422 (1939-03-01), Tokheim
patent: 2164450 (1939-07-01), Eshbaugh et al.
patent: 2655284 (1953-10-01), Konchan
patent: 2961410 (1939-08-01), Drane
patent: 4005341 (1977-01-01), Uptegraff, Jr. et al.
patent: 4109819 (1978-08-01), Kushman et al.
patent: 4339054 (1982-07-01), Kellogg
patent: 4489883 (1984-12-01), Anderson
patent: 4498599 (1985-02-01), Avrea
patent: 4540103 (1985-09-01), Kasugai et al.

Affiliated with

Also associated with

Rating

Container having a manhole cover with a pressure-vacuum relief v does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Container having a manhole cover with a pressure-vacuum relief v, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Container having a manhole cover with a pressure-vacuum relief v will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1601993