Pneumatic direct digital controller

Patent 5114070 Issued on May 19, 1992. Estimated Expiration Date:

November 6, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2764354

2765415

3003700

Temperature regulating system for the control of temperature in a room
Patent #: 4391913
Issued on: 07/05/1983
Inventor: Keldmann

Portable, remote environmental control system
Patent #: 4433719
Issued on: 02/28/1984
Inventor: Cherry , et al.

Digital pneumatic modulator
Patent #: 4440066
Issued on: 04/03/1984
Inventor: Anderson

Electronic control arrangement for system powered HVAC terminal units
Patent #: 4500034
Issued on: 02/19/1985
Inventor: Reese , et al.

Air terminal--air handler interface
Patent #: 4533080
Issued on: 08/06/1985
Inventor: Clark , et al.

Duct pressure powered air volume controller
Patent #: 4756474
Issued on: 07/12/1988
Inventor: Tulowiecki , et al.

Air flow damper control system
Patent #: 4824012
Issued on: 04/25/1989
Inventor: Tate

More ...

Inventors

Assignee

American Standard Inc.

Application

No. 610497 filed on 11/06/1990

US Classes:

236/49.3, Electrically actuated236/51, DISTANCE-ADJUSTED236/84Electric

Examiners

Primary: Wayner, William E.

Attorney, Agent or Firm

Beres; William J., O'Driscoll; William, Ferguson; Peter D.

International Class

G05D 015/00

Abstract

A pneumatic direct digital control system comprising: an air inlet; an air outlet; a transducer for connecting the air inlet and the air outlet and controlling a flow of air therebetween; a power supply; a sensor; and a direct digital controller. The direct digital controller is operably connected to the power supply. Additionally, the controller is operably connected to and is controlling the transducer.