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. 21, 1983
Filed:
Dec. 31, 1980
Ryuichi Kajiyama, Aichi, JP;
Shigemi Iwata, Aichi, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An elevator position detecting device which provides a correct floor position output signal even if the elevator case is moved irregularly between floors. In a first embodiment, a single cam is provided between each two adjacent floors and a single detector attached to the elevator cage produces an output signal to an electronic calculator each time the detector meets the engaging cam for upward member and leaves the cam for downward movement. A digital value corresponding to one floor is added to or subtracted from, respectively, a floor memory of the electronic calculator. In a second embodiment, two cams are provided between each two adjacent floors with each of the two cams being a fixed distance away from its adjacent floor. Two detecting means are provided on the elevator cage in this case and the content of the floor memory is divided by two to provide a correct cage position signal.