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:
Feb. 20, 2007
Filed:
Feb. 14, 2002
Takashi Asano, Ibaraki, JP;
Yosuke Goda, Ibaraki, JP;
Kenichi Yamamoto, Ibaraki, JP;
Mamoru Harada, Ibaraki, JP;
Takashi Asano, Ibaraki, JP;
Yosuke Goda, Ibaraki, JP;
Kenichi Yamamoto, Ibaraki, JP;
Mamoru Harada, Ibaraki, JP;
Fujitec Co., Ltd., Ibaraki, JP;
Abstract
The invention provides an elevator apparatus comprising a cagedisposed inside a path of upward or downward movement vertically movably, a counterweightvertically movable with the upward or downward movement of the cage, and a lift drive mechanism for driving the cageupward or downward. The drive mechanism comprises a sheavedisposed inside the path, ropesextending along a route around the sheave, and a drive devicein engagement with the ropes. The drive devicecomprises a belt transmission provided alongside the ropesand revolvingly movable along the rope extension route, a mechanism for pressing a belt surface of the belt transmission into contact with the ropes, and a drive motor for driving the belt transmission. The cage can be driven upward or downward without using any traction sheave, while the cage can be reduced in weight.