초록 ▼

Apparatus which can be installed over an opening on a container and can provide relief of excessive pressure conditions and excessive vacuum conditions in the container and provide rapid temperature actuated pressure relief for the container in the event of fire or other potentially dangerous heat r

Apparatus which can be installed over an opening on a container and can provide relief of excessive pressure conditions and excessive vacuum conditions in the container and provide rapid temperature actuated pressure relief for the container in the event of fire or other potentially dangerous heat related conditions, the apparatus including an aperture therethrough communicating with the container opening and a member releasable maintained in the aperture with a substance which melts at a predetermined temperature to enable pressure in the container acting against the releasable member to separate and even blow the releasable member from the apparatus and escape from the container through the aperture, the preferred construction including a self-actuating and self-modulating combined pressure and vacuum relief valve assembly which provides accurate pressure relief for the container at a predetermined over pressure condition and high inflow rates of air for vacuum relief at a predetermined excessive vacuum or negative pressure condition, the combined relief valve assembly being mounted on the releasable member.

대표청구항 ▼

A combination relief vent apparatus for installing on a container having an opening therein comprising; a first member having an aperture therethrough and means for mounting on a container with said aperture in communication with a container opening, a second member located in said aperture and expo

A combination relief vent apparatus for installing on a container having an opening therein comprising; a first member having an aperture therethrough and means for mounting on a container with said aperture in communication with a container opening, a second member located in said aperture and exposed to the pressure conditions in the container through the container opening, fusible means located between said first member and second member, said fusible means maintaining a sealed condition around said second member and maintaining said second member in said aperture, said fusible means melting at a predetermined temperature to allow pressure in the container acting against said second member to separate said second member from said first member and escape from the container therebetween, said second member having a passageway extending therethrough and through said aperture, and relief valve means mounted on said second member and closing said passageway, said relief valve means operating to open said passageway in response to a predetermined pressure condition in the container.