Method and apparatus for dynamically weighing objects in motion

• US 3,276,525 A
• Filed: 06/15/1964
• Issued: 10/04/1966
• Est. Priority Date: 06/15/1964
• Status: Expired due to Term

• Current Assignee: George R. Cass
• Original Assignee: George R. Cass
• Inventors: Cass, George R.
• Application Number:
  US04/374,985
• Time in Patent Office: 841 Days
• US Class Current: 177/1
• CPC Class Codes: B60T 2250/02 Vehicle mass
• CPC Class Codes: G01G 19/047 using electrical weight-sensitive devices
• CPC Class Codes: G01G 3/147 involving digital counting
• CPC Class Codes: H03M 1/00 Analogue/digital conversion; Digital/analogue conversion conversion of analogue values to or from differential modulation H03M3/00
• CPC Class Codes: H03M 1/20 Increasing resolution using an n bit system to obtain n + m bits
• CPC Class Codes: Y10S 177/08 RR motion

Claims

1. A METHOD OF WEIGHING A MOVING BOUNCING OBJECT COMPRISING THE STEPS OF SUPPORTING SAID OBJECT ON LOAD CELL MOUNTED SCALE MEANS DURING A PORTION OF ITS MOVEMENT, SAID LOAD CELLS BEING ENERGIZED BY A POWER SUPPLY AND PRODUCING AN ELECTRICAL OUTPUT PROPORTIONAL TO THE INSTANTANEOUS LOADS IMPOSED THEREON BY SAID MOVING OBJECT, SAID OUTPUT COMPRISING A STEADY SIGNAL PROPORTIONAL TO THE STATIC WEIGHT OF SAID OBJECT PLUS OSCILLATORY COMPONENTS SUPERIMPOSED THEREON, THEN PASSING SAID OUTPUT INTO A FILTER FOR A PERIOD OF APPROXIMATELY 2 SECONDS WHICH ATTENUATES THE AMPLITUDES OF THE OSCILLATORY COMPONENTS TO 1/13 OF THEIR ORIGINAL VALUES AND BUILDS UP TO WITHIN 1.74X10-4 OF THE STATIC WEIGHT COMPONENT OF SAID OBJECT, THEN INTEGRATING THE OUTPUT FROM SAID FILTER IN INTEGRATING MEANS FOR A PERIOD OF APPROXIMATELY 1 SECOND WHICH ATTENUATES THE AMPLITUDES OF SAID OSCILLATORY COMPONENTS BY A FURTHER 1/20, THEN READING THE OUTPUT FROM SAID INTEGRATING MEANS ON A READ-OUT MEANS WHICH INDICATES THE WEIGHT OF SAID OBJECT TO AN ACCURACY OF WITHIN +0.15% OF THE STATIC WEIGHT, SAID WEIGHT INDICATION BEING STABILIZED AGAINST VARIATIONS IN SAID POWER SUPPLY.