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:
Jul. 19, 2016
Filed:
Oct. 16, 2013
Toyo Machinery & Metal Co., Ltd., Akashi-shi, Hyogo, JP;
Kazuyuki Shibata, Akashi, JP;
Akira Inoue, Akashi, JP;
Yasutake Sawada, Akashi, JP;
Kensuke Moritani, Akashi, JP;
TOYO MACHINERY & METAL CO., LTD., Akashi-shi, JP;
Abstract
A first chromium mass concentration and a first reference mass concentration are extracted from a first test substance made by adding a predetermined amount of calcium to a predetermined amount of pellets; a reference value is calculated on the basis thereof. A second chromium mass concentration and a second reference mass concentration are extracted from a second test substance made by adding, to a predetermined amount of the substance contained in the molded part, an amount of calcium identical to the amount added to the pellets; a comparative value is calculated on the basis thereof. A screw can be determined to have wear whenever the comparative value is not less than a numerical value 60 times that of the reference value, whereas the screw can be determined not to have wear whenever the comparative value is less than a numerical value 60 times that of the reference value.