Abrégé

A pressure relief apparatus for venting a tank comprising an inlet port, an outlet port, a closure member retained, relative to the inlet and outlet ports, for preventing, or substantially preventing, fluid communication between the inlet port and the outlet port, a trigger mechanism including a temperature response portion, and a compartment for receiving pressurized fluid from the outlet port and communicating the received pressurized fluid to the trigger mechanism. The trigger mechanism and the closure member are cooperatively configured to release the closure member and establish fluid communication between the inlet port and the outlet port, thereby venting the tank, upon detection of a temperature at or above a predetermined temperature threshold or upon pressurization of the compartment at or above a predetermined pressure threshold.

Classes IPC  ?

• F16K 17/10 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage ouvrant sur excès de pression d'un côtéSoupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté actionnés par ressort avec soupape auxiliaire agissant par un fluide sur la soupape principale
• F16K 17/00 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage
• F16K 17/38 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fonctionnant sous l'action de circonstances extérieures, p. ex. un choc, un changement de position d'une température excessive
• F16K 31/00 - Moyens de fonctionnementDispositifs de retour à la position de repos
• F17C 13/04 - Disposition ou montage des soupapes

Abrégé

A temperature activated valve is provided comprising a trigger for effecting actuation of the valve. The trigger includes a temperature responsive trigger portion including a plurality of constituent trigger segments connected to one another in series. The constituent trigger segments include a plurality of temperature responsive trigger segments. Each one of the temperature responsive trigger segments, independently, includes a composite material, the composite material including: (a) a shape changing material-comprising component configured to assume a change in shape in response to receiving of heat energy by the temperature responsive trigger segment, and (b) a relatively inelastic material-comprising component having a modulus of elasticity that is greater than the modulus of elasticity of the shape changing material-comprising component.

Classes IPC  ?

• F16K 31/00 - Moyens de fonctionnementDispositifs de retour à la position de repos
• F16K 17/38 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fonctionnant sous l'action de circonstances extérieures, p. ex. un choc, un changement de position d'une température excessive

Abrégé

A temperature activated valve is provided comprising a trigger for effecting actuation of the valve. The trigger includes a temperature responsive trigger portion including a plurality of constituent trigger segments connected to one another in series. The constituent trigger segments include a plurality of temperature responsive trigger segments. Each one of the temperature responsive trigger segments, independently, includes a composite material, the composite material including: (a) a shape changing material-comprising component configured to assume a change in shape in response to receiving of heat energy by the temperature responsive trigger segment, and (b) a relatively inelastic material-comprising component having a modulus of elasticity that is greater than the modulus of elasticity of the shape changing material-comprising component.

Classes IPC  ?

• F16K 31/00 - Moyens de fonctionnementDispositifs de retour à la position de repos
• F16K 17/38 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fonctionnant sous l'action de circonstances extérieures, p. ex. un choc, un changement de position d'une température excessive

Abrégé

There is provided a valve comprising a body, a passageway, a sealing member, a trigger, and a temperature responsive trigger actuator. The passageway is defined by the body, wherein the passageway includes an inlet and an outlet. The sealing member is configured for movement between a closed position and an open position, wherein in the closed position, the sealing member prevents fluid communication between the inlet and outlet of the passageway, and in the open position, the inlet and the outlet of the passageway are in fluid communication. The trigger is configured for movement between a first trigger position and a second trigger position, wherein the trigger cooperates with the sealing member such that, when the trigger is disposed in the first trigger position, the trigger effects interference with movement of the sealing member from one of the open position and the closed position to the other one of the open position and the closed position, and when the trigger is disposed in the second trigger position, the interference effected by the trigger, is removed. The temperature responsive trigger actuator includes a plurality of point trigger actuator portions wherein each one of the plurality of point trigger actuator portions is characterized by a respective shape-changing temperature and is configured such that, for each one of the plurality of point trigger actuator portions, when the temperature of the point trigger actuator portion is below the respective shape-changing temperature, the point trigger actuator portion is disposed in a respective low temperature shape condition, and when the temperature of the point trigger actuator portion is at or above the respective shape-changing temperature, the point trigger actuator portion is disposed in a respective high temperature shape condition. The trigger co-operates with the plurality of point trigger actuator portions such that the movement of the trigger from the first trigger position to the second trigger position is configured to be effected by heating of at least one operative point trigger actuator portion, wherein each one of the at least one operative trigger portion is any one of the plurality of point trigger actuator portions, wherein the heating is sufficient to raise the temperature of each one of the at least one operative point trigger actuator portion above its respective shape-changing temperature.

Classes IPC  ?

• F16K 31/02 - Moyens de fonctionnementDispositifs de retour à la position de repos électriquesMoyens de fonctionnementDispositifs de retour à la position de repos magnétiques
• F16K 31/00 - Moyens de fonctionnementDispositifs de retour à la position de repos
• F16K 17/38 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fonctionnant sous l'action de circonstances extérieures, p. ex. un choc, un changement de position d'une température excessive