US 10,126,196 B2Granted

Multi-condition sensor systems

AssigneeKidde Technologies, Inc.

InventorsSteven Wallace, Benjamin Codispoti, Lawrence A. Coreth, David W. Frasure

Life of this patent

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Abstract

A multi-condition sensor, comprising a housing defining a component cavity, a pressure input tube disposed through the housing, a fault actuator disposed within the component cavity of the housing and in pressure communication with the pressure input tube through the housing, wherein the fault actuator is configured to extend and contract as a function of pressure from the pressure input tube, an alarm actuator disposed within the component cavity of the housing opposite the fault actuator and configured to be actuated by the fault actuator and to extend to a maximum fault position, and an adjustable alarm contact disposed on an opposite side of the alarm actuator within the component cavity and configured to be adjusted to a predetermined extension length from the housing to provide a predetermined alarm contact position.

Claims19

Dependent claims

A multi-condition sensor electrical system for determining the state of the multi- condition sensor, comprising:

a first resistor in series with a power input line and a first electrode of the multi-condition sensor;
a second resistor disposed in series with a power return line and a contact electrode of the multi-condition sensor and configured to receive current from the first resistor in a first sensor state;
a third resistor in parallel with a signal out line, wherein the signal out line is in series with the first resistor and wherein the third resistor is in series with the first resistor and the third resistor is disposed between the first resistor and the power return line;
and a fourth resistor in series between a second electrode of the multi-condition sensor and the power return line, and configured to receive current from the first resistor in a second sensor state and not to receive current from the first resistor in a third sensor state.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/223,482Filed 29 Jul 2016
Published: US 2018/0031437 A11 Feb 2018
Granted: 13 Nov 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G01L 19/12
Means for indicating or recording, e.g. for remote indication: alarms or signals
G01L 9/0033
Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements ; Transmitting…
G01L 9/0035
Transmitting or indicating the displacement of bellows by electric, electromechanical, magnetic, or electromagnetic means: using variations in…
H01H 35/00
Switches operated by change of a physical condition