Westinghouse Air Brake Company

Jennifer L Ray

Brian L Cunkelman

A temperature indicator for indicating when a specified temperature has been exceeded in a fluid flow through a conduit. Such conduit having an aperture and the temperature indicator being mountable in such aperture and engagable therewith such that the temperature indicator projects through such aperture and into such fluid flow in such conduit. The temperature indicator includes a housing which substantially encloses an internal chamber and has a bore extending from the internal chamber to an external surface of the housing. An indicator member is disposed, at least in part, within the internal chamber and extends into the bore. A biasing element is disposed within the internal chamber and exerts a biasing force between the housing and the indicator member and urges the indicator member toward the bore. A bonding agent forms a bond between the indicator member and the housing to thereby restrain the indicator member from movement toward the bore under action of the biasing element. The bonding agent is thermosensitive to substantially release the bond between the indicator member and the housing when a temperature of the bonding agent substantially reaches the specified temperature.

Pop-up temperature indicator for use in a 3-CD type air compressor or similar device

A temperature indicator for providing a visual indication that a pressurized fluid has exceeded a specified temperature. Such pressurized fluid being contained within a container bounded by a container wall. Such container wall being provided with an aperture for mounting of the temperature indicator therein such that the temperature indicator protrudes through such aperture and into such pressurized fluid contained within such container. The temperature indicator includes a housing member, a cavity provided in the housing member and a bore extending from an interior portion of the cavity to an exterior surface of the housing member. The exterior surface of the housing member is visible from a position external of such container when the temperature indicator is mounted in such aperture such that the temperature indicator protrudes through such aperture and into such pressurized fluid contained within such container. The temperature indicator further includes a plunger member at least partially disposed within the cavity. The plunger member extends into the bore and a bonding agent bonds the plunger member to the housing member. The bonding agent being substantially exposed to such pressurized fluid contained within such container and the bonding agent being thermosensitive to substantially release the bonding of the plunger member to the housing member upon the bonding agent substantially exceeding the specified temperature.

Temperature indicator for use in a pressurized environment

A temperature activated diversion valve for supplying a first inflow fluid as an outflow fluid and for switching to supply a second inflow fluid as the outflow fluid if the first inflow fluid reaches a specified temperature. The temperature activated diversion valve includes a first inflow conduit for carrying the first inflow fluid, a second inflow conduit for carrying the second inflow fluid, an outflow conduit and a valve member. The valve member is moveable between a first position and a second position and establishes fluid communication between the first inflow conduit and the outflow conduit in the first position, while blocking fluid communication between the second inflow conduit and the outflow conduit in the first position. Additionally, the valve member establishes fluid communication between the second inflow conduit and the outflow conduit in the second position, while blocking fluid communication between the first inflow conduit and the outflow conduit in the second position. A biasing element is provided which exerts a biasing force urging the valve member toward the second position and a bonding element restrains the valve member in the first position against the biasing force exerted by the biasing element. The bonding element is thermosensitive to release the restraining of the valve member in the first position upon the bonding element attaining the specified temperature.

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Ruffsdale, PA, United States of America

Jennifer L Ray