Mark D Lund

US Patent:

6661876, Dec 9, 2003

Filed:

Jul 29, 2002

Appl. No.:

10/208646

Inventors:

Clark Turner - Payson UT
Arturo Reyes - Orem UT
Hans K. Pew - Acton MA
Mark W. Lund - Orem UT
Michael Lines - Provo UT
Paul Moody - Sandy UT
Sergei Voronov - Provo UT

Assignee:

Moxtek, Inc. - Orem UT

International Classification:

H01J 3514

US Classification:

378138, 378119, 378102, 378123, 313553

Abstract:

A mobile, miniature x-ray source includes a low-power consumption cathode element for mobility, and an anode optic creating a field free region to prolong the life of the cathode element. An electric field is applied to an anode and a cathode that are disposed on opposite sides of an evacuated tube. The anode includes a target material to produce x-rays in response to impact of electrons. The cathode includes a cathode element to produce electrons that are accelerated towards the anode in response to the electric field between the anode and the cathode. The tube can have a length less than approximately 3 inches, and a diameter or width less than approximately 1 inch. The cathode element can include a low-power consumption cathode element with a low power consumption less than approximately 1 watt. The power source can include a battery power source. A field-free region can be positioned at the anode to resist positive ion acceleration back towards the cathode element.

US Patent:

62346342, May 22, 2001

Filed:

Jul 28, 1999

Appl. No.:

9/363256

Inventors:

Douglas P. Hansen - Spanish Fork UT
Raymond T. Perkins - Orem UT
Eric Gardner - Provo UT
Mark W. Lund - Orem UT

Assignee:

Moxtek - Orem UT

International Classification:

G03B 2114

US Classification:

353 20

Abstract:

An image projection system has a wire grid polarizing beam splitter which functions as both the polarizer and the analyzer in the system. A light source produces a source light beam directed at the beam splitter which reflects one polarization and transmits the other. A liquid crystal array is disposed in either the reflected or transmitted beam. The array modulates the polarization of the beam, encoding image information thereon, and directs the modulated beam back to the beam splitter. The beam splitter again reflects one polarization and transmits the other so that the encoded image is either reflected or transmitted to a screen. The wire grid polarizing beam splitter is capable of being oriented at various incident angles with respect to the source light beam and modulated beam, and accepts relatively divergent light.

US Patent:

20170005909, Jan 5, 2017

Filed:

Jul 1, 2016

Appl. No.:

15/201251

Inventors:

- Orem UT, US
Mark Lund - Orem UT, US
James Liin - Price UT, US
Chris Poulsen - Orem UT, US
Darryl Stewart - Orem UT, US

International Classification:

H04L 12/721
H04L 12/26
H04B 7/04
H04W 52/28
H04L 29/12
H04L 29/08
H04W 4/02

Abstract:

Technology for a wireless underground communication system is disclosed. The wireless underground communication system can include a multi radio directional router (MRDR). The MRDR can include a dedicated in-by transceiver Wi-Fi node, and the dedicated in-by transceiver Wi-Fi node can be assigned a first unique IP address. The MRDR can include a dedicated out-by transceiver Wi-Fi node, and the dedicated out-by transceiver Wi-Fi node can be assigned a second unique IP address. The wireless underground communication system can include a routing module configured to route data between a plurality of MRDRs based on one or more of Optimized Link State Routing (OLSR) or Open Shortest Path First (OSPF), using the dedicated in-by transceiver Wi-Fi node and the dedicated out-by transceiver Wi-Fi node.