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. 13, 2017
Filed:
Mar. 04, 2013
Kazuhiro Yoshikawa, Chiyoda-ku, JP;
Hideki Miyahara, Chiyoda-ku, JP;
Kazuhiro Sasaki, Chiyoda-ku, JP;
Yoshinao Takahashi, Chiyoda-ku, JP;
Kazuhiro Yoshikawa, Chiyoda-ku, JP;
Hideki Miyahara, Chiyoda-ku, JP;
Kazuhiro Sasaki, Chiyoda-ku, JP;
Yoshinao Takahashi, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
In an elevator refurbishing method in which a hydraulic elevator in which a hydraulic jack is installed in an equipment installation zone is refurbished into a machine-roomless elevator that uses a two-to-one (2:1) roping method, the equipment installation zone being a region inside a hoistway on either a left side or a right side of a car when viewed from directly above, at least one guide rail from a pair of counterweight guide rails is installed in the equipment installation zone while leaving the hydraulic jack in position, the hydraulic jack is removed from the hoistway, the hoisting machine is installed in a lower portion of the equipment installation zone using a space that is created by removal of the hydraulic jack, and a car return sheave and a counterweight return sheave are installed on an upper portion of the counterweight guide rails.