Craig Bryant Christensen

US Patent:

8429952, Apr 30, 2013

Filed:

Feb 2, 2010

Appl. No.:

12/698669

Inventors:

Boyd T. Bringhurst - Logan UT, US
Craig B. Christensen - Logan UT, US
Daniel W. Ewert - Logan UT, US
R. Joseph Thurston - Logan UT, US

Assignee:

Campbell Scientific, Inc. - Logan UT

International Classification:

G01N 11/00

US Classification:

73 5301

Abstract:

A probe with antifouling components. The probe includes a sensor for measuring attributes of a fluid such as liquid or gas. The probe includes antifouling components to prevent or inhibit fouling. The antifouling components include material components, antifoulant components such as biocide, scaling inhibitors, etc. , and wiper/shutter components that are arranged to collectively prevent or inhibit fouling of the probe or of the sensor included in the probe.

US Patent:

54877024, Jan 30, 1996

Filed:

Jul 6, 1994

Appl. No.:

8/272238

Inventors:

Ronald Campbell - Mendon UT
Gaylon Campbell - Pullman WA
Craig Christensen - Logan UT

Assignee:

HarvestMaster, Inc. - Logan UT

International Classification:

A01F 1250

US Classification:

460 7

Abstract:

A grain measuring and weighing device including an entrance chamber, a constant volume chamber, and a weigh chamber. A plurality of gates controllably move between open and closed positions to allow a known volume of grain to flow between chambers. The weighing and measuring system includes a means for compensating and eliminating forces external to the grain harvester, such as the various forces due to sloping surfaces and rough terrain over which the grain harvester moves, that would otherwise adversely affect the grain yield data. In one embodiment, an accelerometer is use to measure such external forces. In another embodiment, a reference weight is used to measure the external forces.