Cantilever beam scale

• US 20060124365A1
• Filed: 12/13/2004
• Published: 06/15/2006
• Est. Priority Date: 12/13/2004
• Status: Active Grant

• Current Assignee: Nate John Coleman
• Original Assignee: Nate John Coleman
• Inventors: Coleman, Nate John
• Granted Patent: US 8,436,261 B2
• Time in Patent Office: Days
• US Class Current: 177/229
• CPC Class Codes: G01G 3/12 wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
• CPC Class Codes: G01L 1/2206 Special supports with preselected places to mount the resistance strain gauges; Mounting of supports

Abstract

An improved device for the measuring of weight or force is disclosed. This is an apparatus that allows for measurement of weight or force using a cantilever beam that is substantially insensitive to location of the weight or force within certain limits on the beam and is capable of correction for off-level conditions.

Claims

1. ) An improved device for measuring weight or force comprising:

a cantilever beam secured or affixed at one end, with multiple gauges or sensors placed at known locations on or in the beam substantially near to a secured end to detect local tensile and/or compressive stress or strain in the beam outboard of the sensors.

2. ) A metering and/or display device used to detect the outputs of said multiple gauges or sensors which are placed at predetermined locations on the cantilever beam of claim 1 which applies mathematical formulae to calculate a weight or force using a ratio of the outputs from the individual gauges or sensors placed in the cantilever beam of claim.

3. ) A metering and/or display device used to detect the outputs of said multiple gauges or sensors which are placed at predetermined locations on the cantilever beam of claim 1 which applies mathematical formulae to calculate the location of application of a weight or force applied to the beam using a ratio of the outputs from the individual gauges or sensors placed in the cantilever beam of claim.

4. ) A metering and/or display device used to detect the outputs of said multiple gauges or sensors which are placed at predetermined locations on the cantilever beam of claim 1 which applies mathematical formulae to correct for off-level condition of the beam.

5. ) The device of claim 1 where the beam is straight or curved or another non-straight beam shape which uses the ratios of multiple sensors or gauges to resolve a weight or force of unknown location on the beam.

6. ) The device of claim 1 where the beam is straight or curved or another non-straight beam shape which uses the ratios of multiple sensors or gauges to resolve a location of a weight or force applied to the beam.