John Patrick Wilkinson

US Patent:

6837997, Jan 4, 2005

Filed:

Oct 8, 2002

Appl. No.:

10/266802

Inventors:

John B. Wilkinson - Ashburn VA, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C02F 300

US Classification:

210601, 210623, 210631, 210197, 2105321, 210513, 210538

Abstract:

Method and system for removing accumulated sediment at the bottom of a waste pond or lagoon of a wastewater treatment plant for a petroleum refinery. The system comprises a primary oil separation stage for separating hydrocarbons from the wastewater stream by gravity, a secondary oil removal stage and a biological treatment stage downstream of the secondary oil removal stage. A portion of the sediment from the bottom of the waste pond or lagoon is passed to the secondary oil removal stage and/or the biological treatment stage for processing with the refinery wastewater being treated in these stages.

US Patent:

40537595, Oct 11, 1977

Filed:

Nov 4, 1975

Appl. No.:

5/628482

Inventors:

John Nicholas Wilkinson - Duarte CA

Assignee:

Optical Radiation Corporation - Azusa CA

International Classification:

F21V 2900

US Classification:

362218

Abstract:

A high intensity lamphouse and cooling means for use with photographic slide projectors. The module has a protective glass face, and air inlet and a second air outlet on opposite diametrical points between the lamp and the glass face. Also included are an additional opening near the base of the lamp providing a second air path through the module along the rear side of a reflector and the length of the lamp.

US Patent:

42080185, Jun 17, 1980

Filed:

Nov 27, 1978

Appl. No.:

5/963981

Inventors:

John N. Wilkinson - Bradbury CA

Assignee:

Optical Radiation Corporation - Azusa CA

International Classification:

B65H 1748

US Classification:

242 5519R

Abstract:

Tape is wound on edge on top of a turntable and is held in place against the table by equally spaced pressure pads that extend radially to restrict circumferential movement of the tape across the respective radius while permitting movement along the radius. An agitator is mounted adjacent the periphery of the turntable to contact the outer layer of the tape on each side of a pressure pad and moves in an arc while in contact with the tape toward the center of the table and in the direction of the turntable to aid in forming scallops in the tape between adjacent pressure pads. The length of tape applied to the table for each revolution thereof is controlled and is either one of two selected lengths or a length between the two selected lengths. The length is changed in response to the instantaneous length of tape between a feed mechanism and the point of application of the tape to the table. The take-off point is controlled to prevent scratching of the tape by causing a control signal to be developed when the tape is removed from outside a selected area and activating the movable roller of an accumulator in response to the control signal to move the take-off point back within the selected area.