John Drake

US Patent:

43036082, Dec 1, 1981

Filed:

Jan 23, 1980

Appl. No.:

6/114454

Inventors:

Arthur Ticker - Bowie MD
Herman S. Preiser - Severna Park MD
William Klemens - Severna Park MD
John L. Drake - Arnold MD

International Classification:

B29F 106
G01B 528

US Classification:

264 401

Abstract:

A method and apparatus for replicating the submerged surfaces of ships and other marine structures. One apparatus includes a housing which is partitioned into forward and rear chambers by a membrane and a piston member, which is carried by the membrane. Upon selective flooding of the rear chamber and evacuation of the forward chamber, the piston member is moved toward the submerged surface to form an evacuated molding region therebetween. Liquid molding material is then drawn into the evacuated molding region and the molding device is retained in position until the material solidifies. An alternative molding apparatus includes a housing with peripheral suction elements for releasably securing the housing to the submerged surface so that a molding region is defined therebetween. Upon displacement of water from and subsequent evacuation of the molding region, settable molding material is introduced into the molding region.

US Patent:

53482360, Sep 20, 1994

Filed:

Sep 28, 1993

Appl. No.:

8/127545

Inventors:

John D. Spargo - Annapolis MD
John L. Drake - Arnold MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

B02C 1812
B02C 1822

US Classification:

241 4617

Abstract:

An impeller of an impeller assembly for a processing device has a spiral ove formed in a circumferential side face so that material entering a clearance space between the circumferential side face of the impeller and inner circumferential walls of the processing device is guided out of the clearance space when the impeller assembly is rotated. The spiral groove prevent material from lodging in the space and jamming the impeller assembly.

US Patent:

54892007, Feb 6, 1996

Filed:

Nov 29, 1994

Appl. No.:

8/350068

Inventors:

Peter S. McGraw - Severna Park MD
John L. Drake - Arnold MD
Thomas H. Hane - Annapolis MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

B29C 4302
B30B 1534

US Classification:

425144

Abstract:

A compress/melt waste processor includes a frame; a chamber housing having walls which define a chamber therein; a ram movably disposed in the chamber; a sensor which senses pressure applied by the ram; an actuator operatively connected to the ram to move the ram; a chamber hatch upon which the housing is mounted, the chamber housing walls, the ram and the chamber hatch defining a space therebetween; and a device for feeding contaminated plastic waste into the chamber. The apparatus also includes a device for heating the housing walls, the ram and the chamber hatch; a device for cooling the housing walls, the ram and the chamber hatch, a device for detecting temperature of the housing walls, the ram, the chamber hatch and the contaminated plastic waste in the chamber; and a control device for controlling the actuator and the heating and cooling devices. The control device activates the actuator so that the ram applies pressure to the contaminated plastic waste and also activates the heating device such that pressure and heat are concurrently applied to the plastic waste until the plastic waste reaches a predetermined temperature. The control device also activates the cooling device when a predetermined temperature has been reached in order to cool the heated plastic waste.

US Patent:

54116970, May 2, 1995

Filed:

Sep 30, 1993

Appl. No.:

8/128410

Inventors:

Peter S. McGraw - Severna Park MD
John L. Drake - Arnold MD
Thomas H. Hane - Annapolis MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

B29C 4302

US Classification:

264294

Abstract:

A compress/melt waste processor includes a frame; a chamber housing having alls which define a chamber therein; a ram movably disposed in the chamber; a sensor which senses pressure applied by the ram; an actuator operatively connected to the ram to move the ram; a chamber hatch upon which the housing is mounted, the chamber housing walls, the ram and the chamber hatch defining a space therebetween; and a device for feeding contaminated plastic waste into the chamber. The apparatus also includes a device for heating the housing walls, the ram and the chamber hatch; a device for cooling the housing walls, the ram and the chamber hatch, a device for detecting temperature of the housing walls, the ram, the chamber hatch and the contaminated plastic waste in the chamber; and a control device for controlling the actuator and the heating and cooling devices. The control device activates the actuator so that the ram applies pressure to the contaminated plastic waste and also activates the heating device such that pressure and heat are concurrently applied to the plastic waste until the plastic waste reaches a predetermined temperature. The control device also activates the cooling device when a predetermined temperature has been reached in order to cool the heated plastic waste.