Brian David Kane

US Patent:

6962076, Nov 8, 2005

Filed:

Nov 13, 2003

Appl. No.:

10/713559

Inventors:

Mark Page - Cypress CA, US
Neil Roberts - San Marcos CA, US
Tom Huschilt - San Clemente CA, US
Brian Kane - Dana Point CA, US
John Winkler - San Clemente CA, US

Assignee:

Swift Engineering, Inc. - San Clemente CA

International Classification:

G01M009/00

US Classification:

73147

Abstract:

A positioning system is provided for use in a wind tunnel that results in accurate and dynamic orientation for a model while reducing aerodynamic interference. The system includes a pitch-yaw sleeve having a generally cylindrical shape and a torque tube disposed askew within the sleeve and rotatable about its longitudinal axis to drive a shaft. The shaft is generally elongated and crooked. The sting, to which a model is affixed, is rotatably attached to a distal end of the shaft. Rotation of the pitch-yaw tube and/or the pitch-yaw sleeve provides precise pitch and yaw orientation of the model, and rotation of the sting relative to the shaft provides precise roll orientation.

US Patent:

50847031, Jan 28, 1992

Filed:

Apr 12, 1991

Appl. No.:

7/684215

Inventors:

Brian R. Kane - Fullerton CA

Assignee:

Beckman Industrial Corporation - Fullerton CA

International Classification:

H03M 178

US Classification:

341154

Abstract:

A digital-to-analog converter is disclosed which employs a ladder configuration comprising a series of R1-R2-R3 stages in which resistors R2 and R3 are selected so that mathematically the combined resistance of R2 in parallel with R3 is equal to twice the resistance of R1. The resistance of resistor R3 is on the order of 3 to 30 times greater than the resistance of resistor R2. These resistors are configured in stages with FET switches.