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. 14, 2007
Filed:
Apr. 06, 2006
Takehiro Fukushima, Osaka, JP;
Keisuke Shimada, Osaka, JP;
Shigehisa Tsutsumi, Osaka, JP;
IMV Corporation, Osaka, JP;
Abstract
Horizontal vibration shakersandare disposed opposite to each other on both sides of a vibration table, and either of the horizontal vibration shakers, e.g.is arranged vertically movable so as to produce a positional difference (offset) with respect to a horizontal vibration axisof the other horizontal vibration shaker. When it is supposed that an accelerated velocity appears upwards on the left side of the vibration table, while another accelerated velocity appears downwards on the right side of the vibration tableas a result of generation of a rotational mode M, one of the horizontal vibration shakers, e.g., is elevated to produce the positional difference (offset) with respect to the horizontal vibration axisof the other opposed horizontal vibration shaker. In addition, vibration forces of the horizontal vibration shakersandare controlled at the same time to produce a moment towards the reverse direction, whereby the rotational mode M is suppressed so as to balance the right and left moments.