Patent №
US 4,637,546
Granted
1987-01-20
Filed 1985
Owner
JOHNSON SERVICE COMPANY
Lab
—
AI components
1
planning
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
06776575
A differential pressure controller includes means for controllably metering a flow of air therethrough to an external control device, the metering means including a valving member and a nozzle coacting with the member for metering the flow of air. Also included in a plurality of diaphragms coacting with the valving member and defining a first chamber for receiving a first pressure signal and a second chamber for receiving a second pressure signal. One of the pressure signals includes a component representative of a master control signal. Metering of the flow of air is in response to a pressure difference between the first pressure signal and the second pressure signal.
AI classification
Ownership
JOHNSON SERVICE COMPANY
assignment · 44590027
Assignors
DE MEYER, ROY W.
On an employer assignment, the assignors are typically the inventors.