George D Ezell

US Patent:

7331852, Feb 19, 2008

Filed:

Jun 12, 2003

Appl. No.:

10/460755

Inventors:

George D. Ezell - Granbury TX, US
Lynn B. Heitman - La. TX, US

International Classification:

F24F 7/06

US Classification:

454229, 454239, 340632

Abstract:

A totally integrated ventilation system is contained in the outside air inlet stream. The system samples and controls ventilation airflow as it enters a structure. An air valve connecting the outside air inlet stream to the return plenum is controlled by a valve positioning device and a processor that monitors sensors located in the outside air inlet stream, air quality data provided by a telecommunications link and the HVAC system control signals. The air quality data includes locally broadcast air pollution data or air quality alert data related to accidents or terrorist attacks. The processor and valve positioning device simultaneously control a separate pressure relief valve that allows contaminated air to be exhausted from the structure. An alternate configuration uses a supplemental fan to introduce the outside air inlet stream directly into the structure where HVAC systems are not used. A status and control panel that provides an interface to the occupants or an automation system is provided along with a test box that can monitor the processor to determine the total volume of ventilation air introduced into the structure.

US Patent:

40865045, Apr 25, 1978

Filed:

Oct 29, 1973

Appl. No.:

5/410938

Inventors:

George D. Ezell - Dallas TX
Marvin L. Murphy - Dallas TX
Paul D. Davis - Garland TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G01V 122

US Classification:

340 155TS

Abstract:

In operations such as seismic exploration seismic waves are generated at a shot point. The amplitudes of successive samples of seismic waves appearing at a plurality of detector stations variously spaced from said shot point in the wake of generation thereof are converted to digital codes. The codes from all the detectors are transmitted in sequence and on a real time basis by spread spectrum radio pulses to a master station. A plurality of data acquisition units each including a radio transponder and a seismic detector are located at each of a plurality of spaced seismic detector stations in a seismic prospect. A master radio station means is located in or adjacent to the prospect. Means in the acquisition units and in the master station means interrogates and sequentially polls the transponder units in real time to secure and store digital samples at the master station of analog signals from the detectors at a fixed sample interval the duration of which is selected in relation to the frequencies of the signals whereby samples portray the time amplitude variations of the signals.

US Patent:

40429067, Aug 16, 1977

Filed:

Oct 29, 1973

Appl. No.:

5/410676

Inventors:

George D. Ezell - Dallas TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G01V 122

US Classification:

340 155TS

Abstract:

Continuous type analog data sampled at a high rate automatically is acquired in real time from data acquisition units, established at each of a plurality of spaced source stations. For example in seismic operations the units sense ground motion at spaced detector stations and convert resulting electrical signals to digital representations of such motion. A unique response code is set in each data acquisition unit. From a master station in or adjacent the prospect, data frame pulse sets are transmitted along with a series of channel sync pulses. At each unit digital representations of motion are stored upon receipt of each data frame pulse set. Sync pulses are received and counted at each unit following each data frame pulse set. The count of sync pulses at each said unit is decoded and compared with the respective response codes. In response to coincidence between each decoded count and response code, the stored signal is transmitted to the master station from each said unit.

US Patent:

54491126, Sep 12, 1995

Filed:

Mar 15, 1994

Appl. No.:

8/213192

Inventors:

Lynn B. Heitman - Parker TX
George D. Ezell - Farmers Branch TX

International Classification:

G01K 500
F24F 700

US Classification:

236 493

Abstract:

A flow control device (34) is provided and is interfaced with at least one of the HVAC ducts (14). The flow control device (34) is operable to control the flow of air through the HVAC ducts (14) in response to flow control signals. A flow control command device (24) is disposed proximate to one efferent end (16) of the HVAC duct (14) for generating flow control commands. An ultrasonic transmitter (23) is provided and is coupled to the flow control command device (24). The transmitter (24) is operable to generate and transmit an ultrasonic carrier (26) modulated with the flow control commands to the flow control device (34) through the HVAC duct (14). An ultrasonic receiver (28) is provided for receiving the ultrasonic carrier modulated with the flow control commands and extracting the flow commands therefrom. A control system (30) is provided for converting the flow control commands to flow control signals for transfer to the flow control device (34) to control the operation thereof. A remotely disposed central control system (84) is provided for interpreting and analyzing the flow control commands received by the ultrasonic transceiver (82) in accordance with a control program and generating flow control signals to control the flow control devices (34) in response to receipt of the flow control commands by the ultrasonic transceiver (82).