1
David K Biegelsen, Bryan Preas, Lars Erik Swartz, Warren B Jackson: Two dimensional object position sensor. Xerox Corporation, Oliff & Berridge, November 5, 2002: US06476376 (133 worldwide citation)

Apparatus and method for sensing the position, size, shape and location orientation of one or more objects in two dimensions. The position sensor uses arrays of light sensors mounted on a substrate. When an object passes in proximity to the light sensors light energy from a plurality of light source ...


2
Warren B Jackson, David K Biegelsen, Lars Erik Swartz, Andrew A Berlin, Raj B Apte, Robert A Sprague: Flexible object handling system using feedback controlled air jets. Xerox Corporation, Robert A Burtzlaff, June 3, 1997: US05634636 (79 worldwide citation)

A fluid transport system for moving flexible objects includes a conveyor configured to direct fluid flow against opposite sides of flexible objects. A sensor unit senses motion state of flexible objects, and a motion analysis unit is connected to the sensor unit to calculate relative or absolute mov ...


3
David K Biegelsen, Patrick C P Cheung, Andrew A Berlin, Warren B Jackson, Lars Erik Swartz, Raj B Apte, Richard H Bruce: Passively addressable fluid valves having S-shaped blocking films. Xerox Corporation, Robert A Burtzlaff, April 27, 1999: US05897097 (35 worldwide citation)

A bistable valve useful for paper handling applications is disclosed. The valve can be batch fabricated in two dimensional valve arrays, with each valve in the array being controlled by passive matrix addressing. Typically, each valve includes a valve housing having an aperture plate defining an ape ...


4
Warren B Jackson, David K Biegelsen, Lars Erik Swartz: Pneumatic rollers and paper handling arrangements. Xerox Corporation, Fay Sharpe Beall Fagan Minnich & McKee, June 22, 1999: US05913268 (33 worldwide citation)

A roller assembly is provided with openings in its outer surface for selective communication with a source of vacuum or a positive pressure. The openings may be angled along the roller rotational axis to impart a component of velocity to the paper perpendicular to the tangential roller surface veloc ...


5
David K Biegelsen, Patrick C P Cheung, Andrew A Berlin, Warren B Jackson, Lars Erik Swartz, Raj B Apte, Richard H Bruce: Passively addressable cantilever valves. Xerox Corporation, Robert A Burtzlaff, August 24, 1999: US05941501 (27 worldwide citation)

A bistable valve useful for paper handling applications is disclosed. The valve can be batch fabricated in two dimensional valve arrays, with each valve in the array being controlled by passive matrix addressing. Typically, each valve includes a valve housing an electrically conductive movable eleme ...


6
David K Biegelsen, Lars Erik Swartz, Markus P J Fromherz, Mark H Yim: Media path modules. Palo Alto Research Center, Linda M Ross, August 22, 2006: US07093831 (18 worldwide citation)

A media transport array for forming sequential media streams feeding a media processing system in which serial flows, parallel flows, or both are desired are structured from standard, batch fabricatable media path modules. Each media path module includes a frame unit, intermodule latching means, med ...


7
David K Biegelsen, Warren B Jackson, Lars Erik Swartz, Andrew A Berlin, Patrick C Cheung: Pneumatic actuator with elastomeric membrane and low-power electrostatic flap valve arrangement. Xerox Corporation, Patrick T Bever, Bever Hoffman & Harms, October 26, 2004: US06807892 (17 worldwide citation)

An actuator including a pneumatically distended elastomer membrane that is pressurized and depressurized using electrostatically actuated flap valves laminated onto a printed circuit board. The flap valves close only at zero pressure gradients and flows so that elevated closing and hold-off pressure ...


8
David K Biegelsen, Lars Erik Swartz, David G Duff, Mark H Yim: Flexible director paper path module. Palo Alto Research Center Incorporated, Bever Hoffman & Harms, Patrick T Bever, September 19, 2006: US07108260 (14 worldwide citation)

A flexible media transport system includes a director element having articulating tips that provide access to selected media paths. The director element(s) can be incorporated into a director module. Multiple director modules can then be combined into a highly flexible and reconfigurable media trans ...


9
David Kalman Biegelsen, Warren Bruce Jackson, Lars Erik Swartz: Modular air jet array with coanda exhausting for module decoupling. Xerox Corporation, Oliff & Berridge, September 14, 1999: US05951006 (13 worldwide citation)

A decoupling mechanism is provided for passively or actively decoupling an exhaust from a modular air transport system by diverting an amount of air exiting a channel in a first module in a direction other than the process direction through use of the Coanda effect. This decouples the amount of air ...


10
David G Duff, David K Biegelsen, Lars Erik Swartz: Rotational jam clearance apparatus. Palo Alto Research Center Incorporated, Linda M Robb, March 6, 2007: US07185888 (8 worldwide citation)

A media path jam clearance apparatus installable in a supporting structure includes media drive mechanisms for moving flexible media through media paths and a rotatable, removable jam clearance element. Within the jam clearance element facing surfaces of guide elements define guide surfaces for medi ...