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:
Oct. 01, 1991
Filed:
Jul. 10, 1990
Katsuya Kitaura, Ibaraki, JP;
Masaru Okamoto, Hirakata, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
A flange for a drum is disclosed. The flange is mounted on one end of the drum to rotate together with it, and comprises a hole passing therethrough along the axis of rotation to receive a rotation shaft therethrough, so that the flange can rotate together with the rotation shaft. The hole comprises an inside portion having an oblong cross section and an outside portion having a perfectly circular cross section, the inside portion being located toward the drum, and the outside portion being open toward the outside. One end portion of the rotation shaft has an oblong cross section and is securely fitted in the oblong portion of the hole. When the drum is to be tested for concentricity with the rotation shaft, a conical rotation pin is inserted into the circular portion of the hole so that the flange can be rotated concentrically with, and together with the conical rotation pin.