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:
Aug. 22, 1978
Filed:
Mar. 25, 1977
Agency of Industrial Science & Technology, Tokyo, JP;
Abstract
A vessel for holding the atmosphere in which a test piece is tested has a test atmosphere chamber and an auxiliary chamber intercommunicably formed in a casing and a piston disposed freely slidably in the casing with the upper portion inside the auxiliary chamber and the lower portion protruding into the test atmosphere chamber. A test piece has one end thereof connected to the lower portion of the piston and the other end thereof fastened to a stay fixed in the test atmosphere chamber. A test gas is introduced under pressure into the test atmosphere chamber. The interior of the test atmosphere chamber and that of the auxiliary chamber are placed under an identical pressure. The surface areas of the piston are equal so that the strength of the test piece under a specific atmospheric condition can be accurately measured without subjecting the loading shaft to the otherwise possible effect of the pressure of the test atmosphere.