Mark E Nurczyk

US Patent:

D545706, Jul 3, 2007

Filed:

Aug 30, 2004

Appl. No.:

29/212266

Inventors:

Mark E. Nurczyk - Eastman WI, US
Walter P. Breuer - Westby WI, US

Assignee:

Building Automation Products, Inc. - Gays Mills WI

International Classification:

1004

US Classification:

D10 85

US Patent:

46898018, Aug 25, 1987

Filed:

Oct 11, 1983

Appl. No.:

6/540220

Inventors:

Mark E. Nurczyk - Eastman WI
Patrick J. Wilson - La Crosse WI
Tony J. Wood - West Salem WI

Assignee:

American Standard Inc. - New York NY

International Classification:

H04B 138
H04L 2710

US Classification:

375 9

Abstract:

A microprocessor-based frequency shift keying (FSK) data communications module. The microprocessor selectively modulates and demodulates data directly in terms of a square wave pulse train in which a first frequency is used to convey a binary "1" and a second frequency to convey a binary "0". An input and an output port on the microprocessor are selectively coupled to a transmission line through a transformer, by means of electronic switches. Also included are a bandpass filter for shaping the square waves into sine waves and for filtering noise, and means including a notch filter for generating a carrier detect signal input to the microprocessor, when incoming data is detected on the transmission line. Many of the components in the module are used for both transmitting and receiving data.

US Patent:

48384836, Jun 13, 1989

Filed:

Apr 11, 1988

Appl. No.:

7/179790

Inventors:

Mark E. Nurczyk - Eastman WI
Tedd P. Johnson - La Crosse WI

Assignee:

American Standard Inc. - New York NY

International Classification:

F24F 700

US Classification:

236 495

Abstract:

The variable opening of a pressure independent supply air valve for a building ventilation system is controlled in response to a standard airflow transducer whose output is modified to emulate a close tolerance transducer. In a calibration mode, a microcomputer based control closes the valve and a summing amplifier reduces the transducer output by an amount equal to a compensation signal provided by the microcomputer. Once the output is reduced to a predetermined desired level, the value of the compensation signal is stored in memory for later use during a run mode. In the run mode, the actual supply airflow rate is determined based upon the transducer output less the compensation signal. And the control adjusts the position of the valve until the actual airflow rate meets a desired airflow rate as determined by a room thermostat.

US Patent:

49287508, May 29, 1990

Filed:

Oct 14, 1988

Appl. No.:

7/257566

Inventors:

Mark E. Nurczyk - Eastman WI

Assignee:

American Standard Inc. - New York NY

International Classification:

F24F 11053
F24F 1106
F25B 2900

US Classification:

165 2

Abstract:

A refrigeration system for temperature conditioning several comfort zones includes several VAV (variable air volume) valves each having a hot water coil conveying water whose flow rate is regulated by a PWM (pulse-width modulated) solenoid valve. Each VAV valve is connected to a supply air duct conveying cool supply air. When a zone's temperature is above a set point temperature, the opening of the VAV valve is modulated to meet the cooling demand, and the water coil is shut off. When a zone's temperature is below the set point, the VAV valve is opened to provide a predetermined constant airflow rate and the hot water coil's solenoid valve is cycled open and closed in a pulse-width modulated manner to meet the heating demand.