Ifd Internal Fault Detector Corp.

Ifd Technologies Inc.

John Paul Chisholm

Justin George Pezzin

Jeremy Michael Van Horn

Sophie Anne Ramsden

Yen-You Lin

Audrey Joy Corrine Siebert-Timmer

Adam John Hunsberger

Elizabeth Sarah Smith Price

Hyuk Jae Lee

Thomas Jacob Zuiderveen

A temperature sensor has a heat-sensitive element contained within a chamber, the heat-sensitive element changing from a first configuration to a second configuration at a predetermined temperature, and a biased member biased towards the chamber. The biased member initially is prevented from entering the chamber when the heat-sensitive element is in the first configuration and enters the chamber when the heat-sensitive element is in the second configuration. In some aspects, the first configuration is solid and the second configuration is liquid and a selectively permeable element is provided to allow the heat-sensitive element to exit the chamber in the liquid configuration. An indicator can be provided that has a plurality of feet initially held in a retained configuration by the biased member until the biased member enters the chamber to release the feet for sliding motion of the indicator.

Temperature sensor and indicator

An integrated fault monitoring apparatus for electrical devices has an internal fault detector for detecting transient pressure surges within the electrical device, a pressure relief valve for allowing release of pressure during normal operating conditions of the electrical device, a temperature indicator for indicating that an operating temperature of the electrical device has gone above a predetermined threshold, and/or a sudden pressure relief device for allowing air to escape from the electrical device in the event of a sudden and significant increase in pressure within the electrical device. Methods of using the apparatus are provided.

Integrated fault monitoring apparatus for electrical equipment

A fault indicator for indicating the occurrence of a rapid pressure surge within a housing of an electrical device has: a barrel capable of being mounted in an aperture of the housing; an actuating mechanism having a chamber with at least one orifice communicating between interior and exterior surfaces of the chamber within the housing and an actuating member movable in response to a pressure differential between the interior and exterior surfaces of the chamber; a plunger within the bore of the barrel biased outwardly in the barrel and normally retained in an armed position by the actuating member; and a radial seal disposed between the plunger and the barrel. When the pressure differential exceeds a positive threshold value, the actuating member is moved and thereby permits the plunger to move outwardly into a triggered position. The radial seal may be a dual-lip seal.

Internal fault indicator for electrical equipment

Growing community of inventors

Vancouver, Canada

John Paul Chisholm