Stephen R Langford

US Patent:

50040588, Apr 2, 1991

Filed:

Mar 27, 1990

Appl. No.:

7/500024

Inventors:

Stephen R. Langford - Joplin MO
James R. Stone - Webb City MO
William C. Bagley - Webb City MO

Assignee:

Cardinal Scale Manufacturing Company - Webb City MO

International Classification:

G01G 314
G01L 2500
G01L 122

US Classification:

177 2513

Abstract:

A multiple load-cell weigh scale (10) is disclosed which provides for substantially enhanced accuracy and significantly greater convenience in compensating for load position. The preferred scale (10) includes a platform (12) supported by plurality of digital load cells (14), a central controller (16) for producting a plurality of digital excitation signals representative of a selected excitation voltage for the respective load cells, and an excitation control unit (22) for each load cell for receiving respective excitation signals and for controlling excitation voltage of an associated load cell (20) in accordance therewith.

US Patent:

48259667, May 2, 1989

Filed:

Jan 12, 1988

Appl. No.:

7/156356

Inventors:

Stephen R. Langford - Joplin MO
Herbert H. Pollinger - Columbus KS

Assignee:

Cardinal Scale Manufacturing Company - Webb City MO

International Classification:

G01G 2330
G01D 1322

US Classification:

177177

Abstract:

A weigh scale having a unique display is provided which allows rapid, accurate, and convenient determination of the weight of an object to the nearest discrete fractional portion of a weight unit. The preferred weight unit includes a digital display for the object in whole ounces and four light-emitting indicators, one of which illuminates to indicate the object's fractional weight to the nearest quarter-ounce.