In-situ functionality test feature for advance pneumatic detector
AssigneeKidde Technologies, Inc.
InventorsDharmendr Len Seebaluck, Aaron Stanley Rogers
Life of this patent
Estimating the term…
Abstract
An advance pneumatic detector to indicate pressure changes in an environment includes a switch, a pressure tube, an endcap, a piston, and a magnet. The pressure tube is connected to the switch. The endcap is disposed on an end of the pressure tube opposite from the switch. The piston is disposed within and forms a seal against the pressure tube. The piston is slidably engaged with the pressure tube. The magnet is slidably attached to and surrounds a portion of the pressure tube. The magnet is configured to control the positioning of the piston within the pressure tube.
Claims16
An advance pneumatic detector to indicate pressure changes in an environment, the advance pneumatic detector comprising:
- a switch;
- a pressure tube connected to the switch;
- an endcap disposed on an end of the pressure tube opposite from the switch;
- a piston disposed within and forming a seal against the pressure tube, wherein the piston is slidably engaged with the pressure tube;
- and
- a magnet slidably attached to the pressure tube, wherein the magnet is configured to control the positioning of the piston within the pressure tube.
A method for testing a switch in an advance pneumatic detector with a pressure tube, the method comprising:
- moving a piston within the pressure tube with a magnet;
- adjusting a pressure of a gas in a portion of the pressure tube in response to moving the piston;
- and
- monitoring a state of the switch.
A method of assembling an advance pneumatic detector, the method comprising:
- placing a piston within a pressure tube of a switch of the advance pneumatic detector;
- charging the switch with gas;
- hermetically sealing the switch;
- calibrating the advance pneumatic detector;
- and
- attaching a magnet to a portion of the pressure tube, wherein the magnet is slidably engaged with the pressure tube.
Dependencies are inferred from the claim text.