TORCH WITH INTEGRAL FLASHBACK ARRESTOR AND THERMAL SHUT-OFF DEVICE
First Claim
1. A torch body comprising:
- a passageway; and
a cartridge assembly disposed within the passageway, the cartridge assembly comprising;
at least one of;
a resettable pressure-sensitive device, and a thermal shut-off device, wherein the resettable pressure-sensitive device and the thermal shut-off device are modifiable from a first configuration to a second configuration in response to a pressure or temperature gradient in the torch body, and wherein the second configuration restricts flow of a gas through the passageway;
a bushing operable with at least one of;
the pressure-sensitive device and the thermal shut-off device; and
a check valve positioned along the passageway of the torch body, the check valve operable with at least one of;
the resettable pressure-sensitive device or the thermal shut-off device.
1 Assignment
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Accused Products
Abstract
A torch with integral flashback arrestor and thermal shut-off device is provided. In one approach, a torch body includes a passageway of the torch body, and a cartridge assembly disposed within the passageway. The cartridge assembly may include at least one of: a resettable pressure-sensitive device, and a thermal shut-off device, wherein the pressure-sensitive device and the thermal shut-off device are modifiable from a first configuration to a second configuration in response to a pressure or temperature gradient in the torch body, and wherein the second configuration restricts flow through the passageway. The cartridge may further include a check valve disposed along the passageway, for example, within a bore of a bushing, or within a retainer coupled to the torch body at an inlet of the passageway.
0 Citations
22 Claims
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1. A torch body comprising:
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a passageway; and a cartridge assembly disposed within the passageway, the cartridge assembly comprising; at least one of;
a resettable pressure-sensitive device, and a thermal shut-off device, wherein the resettable pressure-sensitive device and the thermal shut-off device are modifiable from a first configuration to a second configuration in response to a pressure or temperature gradient in the torch body, and wherein the second configuration restricts flow of a gas through the passageway;a bushing operable with at least one of;
the pressure-sensitive device and the thermal shut-off device; anda check valve positioned along the passageway of the torch body, the check valve operable with at least one of;
the resettable pressure-sensitive device or the thermal shut-off device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A flashback arrestor comprising:
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a passageway of a torch body; a resettable pressure-sensitive device disposed along the passageway, wherein the resettable pressure-sensitive device is modifiable from a first configuration to a second configuration in response to a pressure change in the torch body, and wherein the second configuration causes actuation of a piston within the passageway to prevent back-flow through the passageway; and a check valve disposed within the passageway. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A torch comprising:
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a torch body; and a flashback arrestor disposed within a passageway of the torch body, the flashback arrestor comprising; a thermal shut-off device modifiable from a first configuration to a second configuration in response to a temperature gradient in the torch body, wherein the second configuration restricts flow of a gas through the passageway; a retainer coupled to the torch body at an inlet of the passageway; a bushing coupled to the retainer; and a check valve disposed within the retainer. - View Dependent Claims (19, 20, 21, 22)
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Specification