DONALD EUGENE LEE
Engineers in Ogontz Campus, PA
License number
Pennsylvania PE015020L
Category
Engineers
Type
Professional Engineer
Address
Address
Ogontz Campus, PA 19001
Professional information
Automated All-Weather Cargo Transfer System
US Patent:
5154561, Oct 13, 1992
Filed:
Apr 11, 1990
Appl. No.:
7/508234
Inventors:
Donald E. Lee - Abington PA
International Classification:
B65G 6762
US Classification:
4141383
Abstract:
An advanced automated vessel cargo transfer system for loading and unloading of ships and lighters. It includes an articulated manipulator arm mounted on a frame. The arm is provided with a spreader bar at the distal end thereof. The spreader bar is provided with facilities for grasping cargo. Sensors track the movement of the vessel, and automatically responsive controllers adjust the motion and position of the spreader bar to follow the motion of the vessel. Berthing modules are provided to aid in controlling the motion of the vessel. In a major embodiment, the manipulator arm is mounted on a transverse frame that bridges spaced-apart floating barges, and provisions are made for serving vessels both on the outboard and inboard sides of the barges. In another embodiment, the manipulator arm is shore-based.
Ground Fault System And Method Of Detection
US Patent:
4203142, May 13, 1980
Filed:
Jul 31, 1978
Appl. No.:
5/929712
Inventors:
Donald E. Lee - Abington PA
International Classification:
H02H 332
US Classification:
361 42
Abstract:
Disclosed is a ground fault detection system utilizing a distributed array of current rate of rise sensors located at and coupled to the various power substations of an underground trolley system. Threshold detectors and logic circuits measure and compare the rate of rise of current at the various substations with preselected threshold values to distinguish ground faults from normal load transients due primarily to locomotive start-up.