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:
Dec. 25, 1990
Filed:
Aug. 17, 1988
Eiki Watanabe, Aichi, JP;
Masahiro Noda, Aichi, JP;
Abstract
In an elevator system comprising a machine room and an elevator car, as the elevator car moves along a hoistway between a plurality of floors, a radio system permits wireless communication between the machine room and the elevator car. As the elevator car moves along the hoistway, the distance between the elevator car and the machine room varies. To effect stable signal transmission and avoid receiver saturation when the elevator car is in close proximity to the machine room, the output of the transmitter or the sensitivity of the receiver is varied in accordance with the distance between the elevator car and the machine room.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile