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:
Mar. 16, 2010
Filed:
May. 26, 2006
Haruo Okada, Nagano-ken, JP;
Toshimi Kato, Nagano-ken, JP;
Masaki Miyazaki, Nagano-ken, JP;
Hiroo Kudo, Nagano-ken, JP;
Haruo Okada, Nagano-ken, JP;
Toshimi Kato, Nagano-ken, JP;
Masaki Miyazaki, Nagano-ken, JP;
Hiroo Kudo, Nagano-ken, JP;
Nissei Plastic Industrial Co., Ltd., Nagano, JP;
Abstract
A measurement method including a main measurement process Sa in which measurement is performed by rotating a screw in the forward direction with a back-flow prevention valve installed on its tip and a post-measurement process Sb which is performed by rotating the screw in a reverse direction after the main measurement process Sa is finished, the post-measurement process Sb being performed after completing the main measurement process Sa, in which the screw is moved forward in a free rotational state, the rotational state of the screw during the forward movement being monitored, and if the rotation of screw comes to a halt, the screw is rotated in a reverse direction by a specified amount of rotation.