DAVID GEORGE FERN
Pilots at Inverness Rd, Santee, CA

License number
California A2712631
Issued Date
Feb 2016
Expiration Date
Feb 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
9053 Inverness Rd, Santee, CA 92071

Professional information

David Fern Photo 1

Wireless Extension Unit For An Irrigation Controller

US Patent:
D581880, Dec 2, 2008
Filed:
Jan 18, 2007
Appl. No.:
29/276204
Inventors:
Roger S. Neitzel - Escondido CA, US
Malcolm N. Napier - San Diego CA, US
David G. Fern - Santee CA, US
Assignee:
Rain Bird Corporation - Azusa CA
International Classification:
1303
US Classification:
D13162


David Fern Photo 2

Wireless Extension To An Irrigation Control System And Related Methods

US Patent:
8504210, Aug 6, 2013
Filed:
May 18, 2012
Appl. No.:
13/475863
Inventors:
Mark M. Ensworth - Orange CA, US
Barbara E. Booth - Tucson AZ, US
Dean C. Thornton - Alpine CA, US
David G. Fern - Santee CA, US
Randall A. Hern - San Diego CA, US
Malcolm N. Napier - San Diego CA, US
Assignee:
Rain Bird Corporation - Azusa CA
International Classification:
G05D 7/00, G05D 11/00, A01G 25/00, A01G 27/00, F16K 17/36, F16K 31/00, G05B 11/00
US Classification:
700282, 700283, 700284, 239 63, 239 64, 239 67, 239 68, 239 69, 239 70, 239 71, 137 782, 137 783
Abstract:
Several embodiments provide wireless extensions to an irrigation controller system and related methods of use, as well as other improvements to irrigation control equipment. In one implementation, an irrigation control system includes a transmitter unit including a controller and having a connector to be coupled to an irrigation controller having station actuation output connectors. The controller is configured to receive an indication that the irrigation controller has activated an irrigation station, and is also configured to cause the transmitter unit to transmit a wireless activation signal responsive to the indication. A receiver unit is coupled to an actuator coupled to an actuatable device, such as an irrigation valve, the actuator configured to actuate the irrigation valve to control the flow of water therethrough. The receiver unit receives the wireless activation signal and in response, causes the actuator to actuate the actuatable device.


David Fern Photo 3

Wireless Extension To An Irrigation Control System And Related Methods

US Patent:
2007010, May 10, 2007
Filed:
Jul 19, 2006
Appl. No.:
11/458535
Inventors:
Mark Ensworth - Orange CA, US
Barbara Booth - Tucson AZ, US
Dean Thornton - Alpine CA, US
David Fern - Santee CA, US
Randall Hern - San Diego CA, US
Rajiv Dabir - Post Falls ID, US
Malcolm Napier - San Diego CA, US
Assignee:
RAIN BIRD CORPORATION - Azusa CA
International Classification:
G05D 11/00
US Classification:
700284000, 239069000
Abstract:
Several embodiments provide wireless extensions to an irrigation controller system and related methods of use, as well as other improvements to irrigation control equipment. In one implementation, an irrigation control system includes a transmitter unit including a controller and having a connector to be coupled to an irrigation controller having station actuation output connectors. The controller is configured to receive an indication that the irrigation controller has activated an irrigation station, and is also configured to cause the transmitter unit to transmit a wireless activation signal responsive to the indication. A receiver unit is coupled to an actuator coupled to an actuatable device, such as an irrigation valve, the actuator configured to actuate the irrigation valve to control the flow of water therethrough. The receiver unit receives the wireless activation signal and in response, causes the actuator to actuate the actuatable device.


David Fern Photo 4

Wireless Extension To An Irrigation Control System And Related Methods

US Patent:
2007017, Aug 2, 2007
Filed:
Mar 1, 2007
Appl. No.:
11/681153
Inventors:
Mark Ensworth - Orange CA, US
Barbara Booth - Tucson AZ, US
Dean Thornton - Alpine CA, US
David Fern - Santee CA, US
Randall Hern - San Diego CA, US
Rajiv Dabir - Post Falls ID, US
Malcolm Napier - San Diego CA, US
Assignee:
Rain Bird Corporation - Azusa CA
International Classification:
G05D 11/00
US Classification:
700284000
Abstract:
Several embodiments provide wireless extensions to an irrigation controller system and related methods of use, as well as other improvements to irrigation control equipment. In one implementation, an irrigation control system includes a transmitter unit including a controller and having a connector to be coupled to an irrigation controller having station actuation output connectors. The controller is configured to receive an indication that the irrigation controller has activated an irrigation station, and is also configured to cause the transmitter unit to transmit a wireless activation signal responsive to the indication. A receiver unit is coupled to an actuator coupled to an actuatable device, such as an irrigation valve, the actuator configured to actuate the irrigation valve to control the flow of water therethrough. The receiver unit receives the wireless activation signal and in response, causes the actuator to actuate the actuatable device.


David Fern Photo 5

Wireless Extension To An Irrigation Control System And Related Methods

US Patent:
2011028, Nov 24, 2011
Filed:
Jul 27, 2011
Appl. No.:
13/192420
Inventors:
Mark M. Ensworth - Orange CA, US
Barbara E. Booth - Tucson AZ, US
Dean C. Thornton - Alpine CA, US
David G. Fern - Santee CA, US
Randall A. Hern - San Diego CA, US
Rajiv Dabir - Post Falls ID, US
Malcolm N. Napier - San Diego CA, US
Assignee:
RAIN BIRD CORPORATION - Azusa CA
International Classification:
G05D 7/06
US Classification:
700284
Abstract:
Several embodiments provide wireless extensions to an irrigation controller system and related methods of use, as well as other improvements to irrigation control equipment. In one implementation, an irrigation control system includes a transmitter unit including a controller and having a connector to be coupled to an irrigation controller having station actuation output connectors. The controller is configured to receive an indication that the irrigation controller has activated an irrigation station, and is also configured to cause the transmitter unit to transmit a wireless activation signal responsive to the indication. A receiver unit is coupled to an actuator coupled to an actuatable device, such as an irrigation valve, the actuator configured to actuate the irrigation valve to control the flow of water therethrough. The receiver unit receives the wireless activation signal and in response, causes the actuator to actuate the actuatable device.


David Fern Photo 6

Systems And Methods For Sensing Pressure

US Patent:
6856251, Feb 15, 2005
Filed:
Apr 26, 2001
Appl. No.:
09/844147
Inventors:
Steven Tietsworth - San Diego CA, US
Darin K Woolf - Oceanside CA, US
Jonathan D Lucas - San Diego CA, US
Igor Abramov - Encinitas CA, US
David G. Fern - Santee CA, US
Assignee:
Xsilogy, Inc. - San Diego CA
International Classification:
G08B021/00
US Classification:
340626, 34053926, 340609
Abstract:
A system comprises a pressurized container configured to hold a pressurized gas and to supply controlled amounts of the pressurized gas to the system as required. The system also includes a sensor that includes a wireless transmitter. The sensor is configured to sense the pressure in the pressurized container and to periodically transmit, using the wireless transmitter, information related to the pressure in the pressurized container. The system also includes a control unit that includes a wireless receiver configured to receive the information transmitted by the sensor. The control unit is further configured to predict based on the received information when the pressure in the pressurized container will reach a predetermined threshold.


David Fern Photo 7

Sensor Device For Interrupting Irrigation

US Patent:
2011022, Sep 15, 2011
Filed:
May 23, 2011
Appl. No.:
13/113900
Inventors:
Randall A. Hern - San Diego CA, US
David G. Fern - Santee CA, US
Gerald E. Peterson - Riverside CA, US
Jordan S. Kutzarov - Irvine CA, US
David M. Redmond - Tucson AZ, US
Assignee:
RAIN BIRD CORPORATION - Azusa CA
International Classification:
A01G 25/16
US Classification:
700284
Abstract:
Methods and apparatus are provided herein for permitting or interrupting irrigation using sensor equipment. In one embodiment, a method for controlling irrigation comprising the steps of: generating an indication representing the amount of rain fall at a sensor unit; transmitting a signal comprising at least the indication from the sensor unit to an interface unit, wherein the interface unit is adapted to cause an interruption of programmed watering schedules of an irrigation controller; receiving the signal at the interface unit; determining, based at least on the indication from the signal, whether irrigation should be interrupted; and generating an interrupt command to interrupt irrigation.


David Fern Photo 8

Sensor Device For Use In Controlling Irrigation

US Patent:
2012022, Sep 13, 2012
Filed:
May 23, 2012
Appl. No.:
13/479111
Inventors:
Randall A. Hern - San Diego CA, US
David G. Fern - Santee CA, US
Gerald E. Peterson - Riverside CA, US
David M. Redmond - Tucson AZ, US
Assignee:
RAIN BIRD CORPORATION - Azusa CA
International Classification:
G08B 21/18, G01N 5/02
US Classification:
340618, 73 73
Abstract:
Methods and apparatus are provided herein for sensing rain fall for use in irrigation control. In one embodiment, a wireless rain sensor comprises a housing at least partially covering a first sensor, a controller and a wireless transmitter. The first sensor comprises a moisture absorptive material located to be contacted by rain fall and configured to expand in response to the contact with the rain fall and contract in response to an absence of the rain fall. The controller is coupled to the first sensor and configured to output signals corresponding to a variable amount of expansion and contraction of the moisture absorptive material. The wireless transmitter is configured to transmit wireless signals, at least one wireless signal comprising data corresponding to the variable amount of expansion and contraction of the moisture absorptive material.


David Fern Photo 9

Sensor Device For Interrupting Irrigation

US Patent:
2011023, Sep 29, 2011
Filed:
Jun 1, 2011
Appl. No.:
13/151269
Inventors:
Randall A. Hern - San Diego CA, US
David G. Fern - Santee CA, US
Gerald E. Peterson - Riverside CA, US
David M. Redmond - Tucson AZ, US
Assignee:
Rain Bird Corporation - Azusa CA
International Classification:
G05D 7/06
US Classification:
700284
Abstract:
Methods and apparatus are provided herein for permitting or interrupting irrigation using sensor equipment. In one embodiment, a method for controlling irrigation comprising the steps of: generating an indication representing the amount of rain fall at a sensor unit; transmitting a signal comprising at least the indication from the sensor unit to an interface unit, wherein the interface unit is adapted to cause an interruption of programmed watering schedules of an irrigation controller; receiving the signal at the interface unit; determining, based at least on the indication from the signal, whether irrigation should be interrupted; and generating an interrupt command to interrupt irrigation.


David Fern Photo 10

Systems And Methods For Sensing A Fluid Supply Status

US Patent:
6992590, Jan 31, 2006
Filed:
Apr 27, 2001
Appl. No.:
09/843900
Inventors:
Steven Tietsworth - San Diego CA, US
Darin K Woolf - Oceanside CA, US
Jonathan D Lucas - San Diego CA, US
Igor Abramov - Encinitas CA, US
David G. Fern - Santee CA, US
Assignee:
Xsilogy, Inc. - San Diego CA
International Classification:
G08B 21/00
US Classification:
340611, 34053922, 340626
Abstract:
A system that includes a container containing a fluid, a fluid line coupled with the container, and a pump configured to pump the fluid out of the container through the fluid line. The system further includes a sensor that includes a wireless transmitter. The sensor is configured to sense the pressure in the fluid line and to periodically transmit, using the wireless transmitter, an alarm message when the pressure reaches an alarm threshold.