John Carroll Schaefer

US Patent:

6873467, Mar 29, 2005

Filed:

Aug 24, 2001

Appl. No.:

09/939384

Inventors:

John Anthony Tejada - Garland TX, US
Erwin E. Cooper - Valley View TX, US
John Paul Schaefer - Plano TX, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

G02B027/10

US Classification:

359627, 359630, 359633, 359855

Abstract:

A method for providing optical alignment for a visible wavelength reflective system is provided. The method includes positioning a first mirror blank on a lathe fixture. The first mirror blank comprises a single precision pinhole. The first mirror blank is secured to the lathe fixture. A first mirror is generated from the first mirror blank.

US Patent:

6921177, Jul 26, 2005

Filed:

Feb 24, 2003

Appl. No.:

10/373448

Inventors:

John P. Schaefer - Plano TX, US

Assignee:

Raytheon Company - Lexington MA

International Classification:

G02B007/182

US Classification:

359883, 359884

Abstract:

A mirror includes: a substrate having a surface; and a thin-film finish layer provided over the surface of the substrate and having on a side thereof opposite from the substrate a surface with a polished finish. According to a different aspect of the invention, a method of making a mirror includes: providing a substrate having a surface thereon; forming a thin-film finish layer over the surface of the substrate using thin-film techniques, the finish layer having a surface on a side thereof opposite from the substrate; and polishing the surface of the finish layer.

US Patent:

20120287520, Nov 15, 2012

Filed:

Jul 25, 2011

Appl. No.:

13/189739

Inventors:

John P. Schaefer - Plano TX, US
Clay E. Towery - Plano TX, US

Assignee:

RAYTHEON COMPANY - Waltham MA

International Classification:

G02B 5/08
B22D 25/00
B24B 1/00
B05D 5/06

US Classification:

359883, 427162, 164 691, 451 41

Abstract:

Low density minors for optical assemblies and methods of manufacture thereof. In one example, a reflective mirror is formed of a magnesium or magnesium alloy substrate that is single point diamond turned to provide a reflective surface. The magnesium or magnesium alloy substrate is compatible with thin-film finishing processes and/or magnetorheological finishing which may be applied to improve a surface finish of the mirror.

US Patent:

49271539, May 22, 1990

Filed:

Feb 13, 1989

Appl. No.:

7/309373

Inventors:

John P. Schaefer - Garland TX

International Classification:

A63B 6936

US Classification:

273187R

Abstract:

A golf putting device which provides immediate feedback on eye positioning relative to the golf ball. The system is completely passive and does not interfere with the golfers putter, hand position or natural set-up. Two small plano mirror are mounted perpendicular to one another on an L-shaped base. The first mirror is mounted on a fixed inclined base, faces the golfer, and ensures forward-backward eye positioning. The second mirror is mounted on an adjustable tilt base, is to the right of the golfer, and ensures inside-outside eye positioning. The collimated reflection plane of each plano mirror intersects directly above the golf ball. A pivoting arm positions the golf ball directly below the reflection intersection plane. A guide rail is provided to ensure the stroke remains along the intended line.

US Patent:

42137705, Jul 22, 1980

Filed:

Apr 2, 1979

Appl. No.:

6/025860

Inventors:

John W. Schaefer - Des Plaines IL

International Classification:

B01D 5100
F02B 3300

US Classification:

55269

Abstract:

A pollutant separator having a cooling coil and a filter includes a scrubber device. The scrubber has a tube with holes in the walls thereof for the passage of fluid to and from a closed collection chamber. A series of spring biased balls within the tube serve as scrubber elements. Extending around part of the outside of the tube is a slidable spring-biased ring valve having a shoulder on which fluid pressure is exerted through a passage extending from inside the tube. The ring valve slides over some of the tube holes causing fluctuations in pressure within the scrubber unit to enhance vibratory, scrubbing motion of the balls contained therein. BACKGROUND OF THE INVENTION This is a continuation-in-part of my copending application, Ser. No. 764,707, filed Feb. 1, 1977 now abandoned, which is in turn a continuation of my abandoned application, Ser. No.

US Patent:

41730470, Nov 6, 1979

Filed:

May 8, 1978

Appl. No.:

5/904040

Inventors:

John W. Schaefer - Des Plaines IL

Assignee:

Nachman Corporation - Des Plaines IL

International Classification:

A47C 2304
A47C 2500

US Classification:

5260

Abstract:

A tubular border frame for inner spring assemblies is disclosed. The border frame includes an opening defined by a pair of inwardly directed lips adapted to receive and secure the coil springs. Straight and corner connectors are provided for joining the sections of the frame to form a complete border surrounding the springs.