Burst disc puncture pressure-imbalance actuator for a fire extinguisher
First Claim
1. A fire extinguisher actuator assembly for a fire extinguisher, the fire extinguisher comprising a fire extinguisher reservoir and a burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent within the fire extinguisher reservoir, the fire extinguisher actuator assembly comprising:
- a cutter shuttle assembly comprising a cutter coupled to a shuttle body, the cutter shuttle assembly detained within the fire extinguisher proximate the burst disc and biased to form a pressure equalization region between the shuttle body and the burst disc; and
an activation device comprising a piercing member, the activation device operable to drive the piercing member through the burst disc and release the pressurized fire extinguishing agent from within the pressure equalization region prior to movement of the cutter shuttle assembly, wherein the release of the pressurized fire extinguishing agent from within the pressure equalization region drives the cutter shuttle assembly towards the burst disc and the cutter through the burst disc to release the pressurized fire extinguishing agent from the fire extinguisher reservoir through the discharge head.
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Accused Products
Abstract
According to one aspect, a fire extinguisher actuator assembly for a fire extinguisher is provided. The fire extinguisher includes a fire extinguisher reservoir and a burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent within the fire extinguisher reservoir. The fire extinguisher actuator assembly includes a cutter shuttle assembly having a cutter coupled to a shuttle body. The cutter shuttle assembly is detained within the fire extinguisher proximate the burst disc and biased to form a pressure equalization region between the shuttle body and the burst disc. The fire extinguisher actuator assembly also includes an activation device having a piercing member operable to pierce the burst disc and release pressure from the pressure equalization region, thereby driving the cutter through the burst disc to release the pressurized fire extinguishing agent through the discharge head.
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Citations
15 Claims
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1. A fire extinguisher actuator assembly for a fire extinguisher, the fire extinguisher comprising a fire extinguisher reservoir and a burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent within the fire extinguisher reservoir, the fire extinguisher actuator assembly comprising:
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a cutter shuttle assembly comprising a cutter coupled to a shuttle body, the cutter shuttle assembly detained within the fire extinguisher proximate the burst disc and biased to form a pressure equalization region between the shuttle body and the burst disc; and an activation device comprising a piercing member, the activation device operable to drive the piercing member through the burst disc and release the pressurized fire extinguishing agent from within the pressure equalization region prior to movement of the cutter shuttle assembly, wherein the release of the pressurized fire extinguishing agent from within the pressure equalization region drives the cutter shuttle assembly towards the burst disc and the cutter through the burst disc to release the pressurized fire extinguishing agent from the fire extinguisher reservoir through the discharge head. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of installing a fire extinguisher actuator assembly in a fire extinguisher, the fire extinguisher comprising a fire extinguisher reservoir and a burst disc that forms a discharge barrier between the fire extinguisher reservoir and a discharge head to retain a pressurized fire extinguishing agent within the fire extinguisher reservoir, the method comprising:
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detaining a cutter shuttle assembly comprising a cutter coupled to a shuttle body within the fire extinguisher proximate the burst disc and biased to form a pressure equalization region between the shuttle body and the burst disc; and positioning an activation device comprising a piercing member to drive the piercing member through the burst disc and release the pressurized fire extinguishing agent from within the pressure equalization region prior to movement of the cutter shuttle assembly, wherein the release of the pressurized fire extinguishing agent from within the pressure equalization region drives the cutter shuttle assembly towards the burst disc and the cutter through the burst disc to release the pressurized fire extinguishing agent from the fire extinguisher reservoir through the discharge head in response to triggering of the activation device. - View Dependent Claims (13, 14, 15)
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Specification