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:
Jun. 05, 2018
Filed:
Oct. 30, 2015
Hiroaki Yamamoto, Osaka, JP;
Hiroaki Yamamoto, Osaka, JP;
Other;
Abstract
A balancer, attachable via its attaching portion to a rotatable body, and rotatable together therewith about its rotation axis, includes: weights of same mass and shape; and a weight holder with storage chambers for housing the weights, respectively, such that the weights can oscillate in arbitrary directions. The weight is shaped similar to and smaller than the chamber. The chamber is a cylindrical space extending alongside its central axis; and has concave curved ends perpendicular to the central axis. Midpoints of the central axes of the chambers are contact points on a circumference of a circle having the rotation axis as its center and being on an arbitrary plane perpendicular to the rotation axis; and are positioned so that they create a rotational symmetry around the rotation axis. The balancer can correct dynamic imbalance in rotatable bodies, such as machine tools, at both low-speeds and high-speeds of rotation.