David C Schaefer

US Patent:

7025345, Apr 11, 2006

Filed:

Jan 8, 2004

Appl. No.:

10/753606

Inventors:

Isaac S. Frazier - Portland OR, US
Jos W. Jacobs - Tigard OR, US
Carl T. Urban - Portland OR, US
David B. Schaefer - Wilsonville OR, US

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B65H 3/06

US Classification:

271109, 271121, 271162, 384418, 384419

Abstract:

A sheet feeder and separator assembly for separating and sequentially feeding individual print media sheets from a stack thereof includes a frame having at least one bearing recess. A removable print media tray is carried by the frame. A separator is connected to the removable print media tray. A pick module assembly is removably connected to the frame adjacent the removable print media tray. The pick module assembly includes a pick roller adjacent the separator to form a nip and at least one flexible bearing is removably received in the at least one bearing recess to removably connect the pick module assembly to the frame.

US Patent:

7205226, Apr 17, 2007

Filed:

May 25, 2005

Appl. No.:

11/138848

Inventors:

David Schaefer - Vancouver WA, US
Robert Charatan - Portland OR, US

Assignee:

Lam Research Corporation - Fremont CA

International Classification:

H01L 21/4763

US Classification:

438637, 438687, 438627, 438700, 438710, 257E21017

Abstract:

A method for etching a trench is provided. The method initiates with providing a substrate having a patterned feature. The method includes alternating between deposition of a protective layer onto inner surfaces of the patterned feature and etching the trench into the substrate. The alternating may be achieved through a gas modulation technique and in one embodiment, the deposition and the etching are performed in the same chamber, i. e. , the substrate does not move to a different chamber between the etch and deposition processes. The alternating is continued until the trench is completed and then the trench is filled. A semiconductor processing system is also provided.

US Patent:

7674056, Mar 9, 2010

Filed:

Mar 10, 2006

Appl. No.:

11/373384

Inventors:

Timothy C. Shaw - Portland OR, US
Daniel C. Park - West Linn OR, US
Rich Chambers - Portland OR, US
Darryl I. Jensen - Woodburn OR, US
Jos Jacobs - Sherwood OR, US
Danielle R. Hall - Sherwood OR, US
David B. Schaefer - Wilsonville OR, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B41J 13/08

US Classification:

400637, 4006371

Abstract:

An image output device includes a marking engine and a media path adjacent the marking engine. The media path has a media transportation direction and a media transport element (e. g. , a nip drive, a belt drive, a suction drive, an air pressure drive, etc. ) within the media path that moves the media along the media path in the media transportation direction. A drive motor is operatively connected to the media transport element. The drive motor provides drive force in a forward direction that causes the media transport element to move media along the media path in the media transportation direction. The drive motor can also provide the drive force in a reverse direction opposite the forward direction. A one-way drive transfer device (e. g. , a one-way clutch, a one-way swing arm mechanism, etc.

US Patent:

8172228, May 8, 2012

Filed:

Mar 26, 2009

Appl. No.:

12/412172

Inventors:

Rob Huala - Tualatin OR, US
Jos Jacobs - Sherwood OR, US
David B. Schaefer - Portland OR, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B65H 39/10

US Classification:

271303, 271225, 271184, 271186

Abstract:

An integrated module for installation within a printer may include a module frame and a plurality of printer subsystem components. The module frame is configured to fit within a predetermined space within a printer and to connect to a printer frame positioned about the predetermined space. The plurality of printer subsystem components are configured to mount to the module frame. At least one printer subsystem component includes a default module media path and at least one diverter-directed module media path within the printer subsystem component. The at least one printer subsystem component is configured to connect to the module frame at a position that enables the default module media path and the at least one diverter-directed module media path to complete a printer media path through the predetermined space when the module frame having the printer subsystem component is connected to the printer frame.

US Patent:

8348268, Jan 8, 2013

Filed:

Feb 5, 2009

Appl. No.:

12/365954

Inventors:

Carl Thomas Urban - Portland OR, US
David B. Schaefer - Portland OR, US
Rob Huala - Tualatin OR, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B65H 5/00
B65H 5/06

US Classification:

271264, 271272

Abstract:

A new media path includes a flexible member that cooperates with a control point for smooth transitions of media sheets along the path. The media path includes an elongated member having a first end and a second end, the elongated member having a longitudinal axis and a cross-member axis perpendicular to the longitudinal axis, the elongated member having a first surface that is non-linear in at least one of the longitudinal and cross-member axes, and a bevel on a second surface of the elongated member, the bevel being proximate to the first end of the elongated member at a predetermined distance from the first end.

US Patent:

61647527, Dec 26, 2000

Filed:

Nov 6, 1998

Appl. No.:

9/188016

Inventors:

David B. Schaefer - Wilsonville OR
Edward F. Burress - Portland OR
Timothy R. Golik - Portland OR
Ernest I. Esplin - Sheridan OR

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B41J 2165

US Classification:

347 30

Abstract:

A method for purging an ink jet print head to clear ink jet orifices is provided. A purge cap forms a vacuum seal over the orifice plate of the print head. Multiple low pressure differential vacuum pulses are applied to the purge cap to remove debris and trapped air bubbles from the ink jet orifices. The low pressure pulses avoid cavitation inside the print head and reduce the amount of ink expelled during the purging process.

US Patent:

20150251755, Sep 10, 2015

Filed:

Mar 10, 2015

Appl. No.:

14/643200

Inventors:

David Brian Schaefer - Wilsonville OR, US

International Classification:

B64C 39/02
H02K 7/18
F03D 9/00
B64C 31/06
F03D 5/00

Abstract:

Airborne devices for generating power in a crosswind power generating phase, including a body and at least one non-planar wing. A control system directs the airborne device to follow a predetermined flight path of increasing altitude during the crosswind power generating phase. Wind energy conversion systems and methods including an airborne device, a tether, a generator, and a control system that directs the airborne device to follow a predetermined flight path including a crosswind power generating phase.

US Patent:

20150178042, Jun 25, 2015

Filed:

Dec 24, 2013

Appl. No.:

14/368446

Inventors:

Kevin Jacobs - Hillsboro OR, US
David Schaefer - Beaverton OR, US
Charles Baron - Chandler AZ, US

International Classification:

G06F 3/16
H04L 29/06

Abstract:

Systems and methods may detect a proximity of one or more client devices to a venue that provides ambient music and generate an anonymous playlist based on preference data associated with the one or more client devices. Additionally, the anonymous playlist may be sent to the venue. In one example, one or more additional venue suggestions are sent to at least one of the one or more client devices based on the preference data and one or more playlists associated with the one or more additional venues.