System for volumetric analysis

• US 3,357,245 A
• Filed: 04/14/1965
• Issued: 12/12/1967
• Est. Priority Date: 04/14/1965
• Status: Expired due to Term

• Current Assignee: Richard L. Wolfrum
• Original Assignee: Richard L. Wolfrum
• Inventors: Wolfrum, Richard L.
• Application Number:
  US04/448,032
• Time in Patent Office: 972 Days
• US Class Current: 73/290.00B
• CPC Class Codes: G01F 17/00 Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies measuring linear dimensions to determine volume G01B

Claims

5. A SYSTEM FOR GAUGING THE CONTENTS OF A CONTAINER BY ACOUSTICALLY SENSING THE ULLAGE VOLUME COMPRISING:

(A) MEANS TO INTRODUCE FIRST SOUND WAVES INTO SAID CONTAINER THROUGH A FIRST ISOLATING RESISTANCE;

(B) MEANS TO SENSE THE PHASE SHIFT OF SAID FIRST SOUND WAVES IMPOSED BY THE ULLAGE VOLUME IN SAID CONTAINER;

(C) MEANS TO INTRODUCE SECOND SOUND WAVES INTO A REFERENCE VOLUME THROUGH A SECOND ISOLATING RESISTANCE;

(D) MEANS TO SENSE THE PHASE SHIFT OF SAID SECOND SOUND WAVES IMPOSED BY SAID REFERENCE VOLUME;

(E) MEANS TO DETERMINE THE DIFFERENCE BETWEEN THE PHASE SHIFT IMPOSED ON SAID FIRST SOUND WAVES AND THE PHASE SHIFT IMPOSED ON SAID SECOND SOUND WAVES;

AND, (F) MEANS TO CHANGE THE FREQUENCY OF SAID SECOND SOUND WAVES SO THAT SAID DIFFERENCE APPROACHES ZERO WHEREBY THE FREQUENCY OF SAID SECOND SOUND WAVES CAN BE CALIBRATED TO SERVE AS A GAUGE FOR THE CONTENTS OF SAID CONTAINER.