Securing device for manhole cover

Movable or removable closures – Responsive to or directly actuated by ambient fluid

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

220203, 220208, E05F 1520

Patent

active

045149313

ABSTRACT:
The specification describes a pressure release device for use with a manhole cover for releasing excess fluid pressure within a manhole or the like, the device comprising a tubular member having a tubular wall, a fluid inlet at one end thereof, a fluid outlet in the wall, an arrangement at the other end thereof for securing the member to the cover, and an arrangement for securing the member to the manhole adjacent a manhole opening for longitudinal movement of the member between a closed position whereat the cover closes the opening and an open position whereat the cover is removed from the opening permitting fluid flow from the manhole into the member via the inlet and outwardly of the member and the manhole opening via the outlet, the member securing permitting movement of the member from the closed position at a predetermined fluid pressure within the manhole and permitting the member to return to the closed position when the fluid pressure drops below the predetermined pressure.

REFERENCES:
patent: 1717364 (1929-06-01), Borland
patent: 1955018 (1934-04-01), Rego
patent: 2009132 (1935-07-01), Gehris
patent: 2025839 (1935-12-01), Woods, Jr.
patent: 2247734 (1941-07-01), Schreiber
patent: 2553934 (1951-05-01), Olyott

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

Securing device for manhole cover does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Securing device for manhole cover, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Securing device for manhole cover will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1791927

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