Pneumatic detector integrated alarm and fault switch
AssigneeKidde Technologies, Inc.
InventorsDavid Frasure, Steven Wallace, Harlan Hagge, Scott Kenneth Newlin
Life of this patent
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Abstract
An integrated switch to indicate pressure changes in an environment includes a housing with a cavity between a first retainer portion and a second retainer portion, a first diaphragm held in the cavity of the housing to indicate fault conditions, and a second diaphragm held in the cavity of the housing to indicate alarm conditions.
Claims20
An integrated switch to indicate pressure changes in an environment, the integrated switch comprising:
- a housing with a cavity between a first retainer portion and a second retainer portion;
- a first diaphragm made entirely out of a metallic material and held in the cavity of the housing to indicate fault conditions;
- and
- a second diaphragm made entirely out of a metallic material and held in the cavity of the housing to indicate alarm conditions;
- wherein the first diaphragm is thinner than the second diaphragm.
An integrated switch for use in an advanced pneumatic detector system to indicate pressure changes in an environment, the integrated switch comprising:
- a housing with a cavity between a first retainer portion and a second retainer portion, wherein the cavity is configured to contain a gas that will expand as the gas is heated;
- a contact pin held in the first retainer portion with an insulating material that surrounds the contact pin and that is positioned between the contact pin and the first retainer portion;
- a pressure tube connected to the cavity and running through the second retainer portion;
- a fault diaphragm held in the cavity of the housing near the second retainer portion;
- and
- an alarm diaphragm held in the cavity of the housing near the first retainer portion.
An integrated switch in an electrical circuit for indicating pressure changes in an environment, the integrated switch comprising:
- a housing with a cavity between a first retainer portion and a second retainer portion;
- an insulating material between the first retainer portion and the second retainer portion;
- a contact pin held in the first retainer portion with an insulating material between the contact pin and the first retainer portion;
- a pressure tube connected to the cavity and running through the second retainer portion;
- a fault diaphragm held in the cavity of the housing near the second retainer portion;
- an alarm diaphragm held in the cavity of the housing near the first retainer portion;
- and
- a power source connected to the fault diaphragm when the fault diaphragm is in a normal undeformed configuration and when the fault diaphragm is deformed.
Dependencies are inferred from the claim text.