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:
Apr. 17, 1984
Filed:
Nov. 19, 1981
Daniel P Hearn, Richardson, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A hand-held, caliper-like detector suitable for measuring the level of a nongaseous substance in a cylinder has two extending arms. The arms of the caliper-like detector are adapted to extend around a part of the cylinder. A gamma radiation source is located on one arm and is adapted to emit gamma rays through a segment of the cylinder toward a scintillator. The scintillator is located on the second arm and is adapted to receive the gamma rays emitted by the radiation source. Various embodiments of the detector pertain to positioning of the radiation source, shielding the source when not in use, the angle subtended by an imaginery chord joining the source and scintillator, and fabrication of source and scintillator housing.