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:
Nov. 14, 1995
Filed:
Sep. 16, 1994
Yukio Iizuka, Inuyama, JP;
Daifuku Co., Ltd., Osaka, JP;
Abstract
A carrying in-and-out device is provided with four posts which are disposed in a distributive arrangement. The provision of the four posts ensures sufficient strength of the device even if the posts are formed thin, and the distributive disposition of the posts minimizes the turbulence and swirls of clean air to be caused when the clean air collides with the posts. As a result, there is little agitation of dust particles inside a passage. The dust particles are carried along without being scattered, and thus, loads can be prevented from adhering to the dust particles. Dust particles produced in an upper frame are sucked by upper fans and then discharged into the posts. The dust particles on the posts are further sucked by lower fans to be discharged downward.