The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 1989
Filed:
Jan. 26, 1988
Akio Furuse, Hachioji, JP;
Kubushiki Kaisha Kosumo Keiki, Tokyo, JP;
Abstract
A volume measuring apparatus comprises pair of tanks of substantially the same volume for supplying gas to a container to be measured and a refernce container, a pressurized gas source for filling the pair of tanks with gas under the same pressure, a volume adder for providing a known volume variation to either one of the container to be measured and the reference container, and a differential pressure detector for measuring the differential pressure between the container to be measured and the reference container. The ratio of the differential pressure variation to the volume variation, which represents the sensitivity for detecting differential pressure, is precalculated based on differential pressure variations obtained in the cases where the volume variation is provided and is not provided. A container desired to be measured is connected to a measuring side pneumatic system and the volume of the container to be measured is computed using the detection sensitivity and the differential pressure measured, with the gas in the pair of tanks being released into the container to be measured and the reference container.