Accession Number : ADD011612

Title :   Elevator/Hatch Controller Platform Leveling Logic with Safety Features.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Thomas,G O

Report Date : 11 Dec 1984

Pagination or Media Count : 14

Abstract : An elevator levelling/hatch control circuit including a motor controller, an elevator dispatching unit, an elevator location sensing unit, and a control unit. The control unit receives hatch position signals, monitors the speed and direction of elevator motion and generates hatch open/close commands and elevator speed and direction commands to assure safe elevator operation in a shipboard environment. In one embodiment the circuit utilizes miniature electromechanical relays that may be visually monitored and easily tested. (Author).

Descriptors :   *PATENTS, *LOGIC CIRCUITS, *SWITCHING LOGIC, *ELEVATORS(LIFTS), CONTROL SYSTEMS, SHIPBOARD, REPAIR, HATCHES, SAFETY, SOLID STATE ELECTRONICS, ELECTROMECHANICAL DEVICES, ELECTRONIC RELAYS

Subject Categories : Electrical and Electronic Equipment
      Construction Equipment, Materials & Supplies
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE