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. 10, 1997
Filed:
Aug. 08, 1995
James L Lagree, Robinson Township, PA (US);
James R Hanna, Brighton Township, PA (US);
Bert Popovich, Carnegie, PA (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A transfer switch system includes a controller which sends separately timed restart signals over a communications network to an addressable relay associated with each load in order to sequentially restart the loads following a transfer. When the loads are elevators, the controller sends a prepare to transfer signal to each elevator through the associated addressable relay directing the elevator to park at a floor with its doors open and delays making a discretionary transfer until all elevators send a reply message over the network that they are appropriately parked. A message from the utility directing a reduction in use of their power can be sent to the controller over the communications network through an additional remote station. The controller can then transfer to the alternate power source and/or send messages to selected loads to shut down.