Patents by Inventor James D. Walsh
James D. Walsh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240162998Abstract: A method of clock synchronization for a distributed, message-passing network includes the step of dissecting a graphical model of the distributed network into a sequence of time-varying directed sub-graphs, each sub-graph including a selection of closed loops. By comparing the sequence of sub-graphs, the influence of each closed loop is quantified. Using the loop influence information, a selection of edges in the graphical model is dynamically identified for deletion using a hierarchically semiseparable structure in order to yield an optimized graphical model. A sum-product message-passing algorithm is then applied to the optimized graphical model to calculate a clock synchronization solution. By maintaining an optimal subset of closed loops within the model, the algorithm converges to a synchronization solution, while, at the same time, limits susceptibility to faults as well as maintains a sufficient degree of algorithmic complexity that streamlines the number of steps required to achieve convergence.Type: ApplicationFiled: January 11, 2022Publication date: May 16, 2024Inventors: James Vogel, Evan D. Walsh
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Patent number: 9050930Abstract: A vehicle collision avoidance signaling method and system are disclosed. The collision signal captures the attention of a distracted driver for the driver to brake appropriately. The vehicle collision warning signal and lighting system automatically alerts an approaching driver of a stopped or slowed vehicle via a strobe or flashing lighting system. An onboard driver is also alerted to the approaching vehicle. Rear vehicle sensors can sense vehicles approaching from the rear and determine the distance, velocity, and the deceleration of the approaching vehicle. A processor processes the signal and integrates with the onboard vehicle's speedometer signal and braking system. If the approaching car's rate of closure is determined to be extreme compared to the vehicle's location, a bright strobe signal along with the brake signal would be automatically given The intensity of the strobe warning can be determined by the rate and distance at which a vehicle is approaching.Type: GrantFiled: October 14, 2011Date of Patent: June 9, 2015Assignee: Xerox CorporationInventors: James D. Walsh, James Dunst
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Publication number: 20130093582Abstract: A vehicle collision avoidance signaling method and system are disclosed. The collision signal captures the attention of a distracted driver for the driver to brake appropriately. The vehicle collision warning signal and lighting system automatically alerts an approaching driver of a stopped or slowed vehicle via a strobe or flashing lighting system. An onboard driver is also alerted to the approaching vehicle. Rear vehicle sensors can sense vehicles approaching from the rear and determine the distance, velocity, and the deceleration of the approaching vehicle. A processor processes the signal and integrates with the onboard vehicle's speedometer signal and braking system. If the approaching car's rate of closure is determined to be extreme compared to the vehicle's location, a bright strobe signal along with the brake signal would be automatically given. The intensity of the strobe warning can be determined by the rate and distance at which a vehicle is approaching.Type: ApplicationFiled: October 14, 2011Publication date: April 18, 2013Applicant: XEROX CORPORATIONInventors: James D. Walsh, James Dunst
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Patent number: 8326196Abstract: This is a baffle used in a transfer station of an electrophotographic marking system. The baffle has a series of air passages that, when these passages are opened, they apply pressure to a sheet of paper and push it upward against a belt or drum surface of a photoreceptor or photoconductor. The toner imaged photoreceptor then transfers the image to the paper that is in contact with it. From the transfer station, the paper with the transferred image is then moved to the fuser station where the image is fused to the paper. The baffle with air passages does not scratch the photoconductor surface as do the prior art systems. Also, the baffle has a much longer useful life than the more costly lift finger transfer blades previously used. A controller senses when a sheet enters the transfer station, senses the paper size, then activates a number of air passages to match the paper size.Type: GrantFiled: June 9, 2008Date of Patent: December 4, 2012Assignee: Xerox CorporationInventor: James D. Walsh
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Patent number: 8193495Abstract: A system and apparatus that removes and collects non-functional wire assemblies from dicorotron units is described. It has a removal tool with flexible levers mounted on the top of a storage box. The removal tool has an open top and bottom, the open bottom is aligned with an opening in the top of the box to permit a dislodged anchor and wire assembly to fall therethrough.Type: GrantFiled: August 28, 2008Date of Patent: June 5, 2012Assignee: Xerox CorporationInventors: Bruce J. Parks, Jamie S. Clayfield, Douglas S Smith, James D. Walsh, Eliud Robles Flores, Gerald F. Daloia
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Patent number: 7881642Abstract: This is a thumper assembly that is positioned in a developer station of a xerographic marking system. A waste container connected to a drop tube collects waste developer from this station. A magnet prevents magnetic developer from moving through the tube when the container is removed. Once a new container is installed, the magnet is moved away from the tube thereby allowing magnetic developer lodged therein to again move through the tube. A thumper is moved striking the tube to further dislodge developer and allow this developer to move through the tube into the waste container.Type: GrantFiled: November 4, 2008Date of Patent: February 1, 2011Assignee: Xerox CorporationInventors: James D. Walsh, Timothy P. Foley
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Patent number: 7865107Abstract: This is a titanium shield that fits into a discorotron and helps to eliminate destructive effluents. The shield conforms to the shape of the discorotron housing and has side portions that extend beyond the side portions of the discorotron housing. On this extended portion, a grid is attached over the open surface of the discorotron. The extended portions are called ears. These ears have notches to mate with apertures in the grid. The exposed ends of the ears are covered by a guard to prevent the ears from making contact with a photoreceptive surface. Below the ears are upstanding electrical contacts which when viewed from an end view form an H-like configuration with the ears.Type: GrantFiled: May 19, 2008Date of Patent: January 4, 2011Assignee: Xerox CorporationInventor: James D Walsh
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Patent number: 7763853Abstract: A corona generating device for charging a surface including, a housing; the housing including spaced generally parallel side panels; members for holding a corona generating electrode in an operable position within the housing; and system for adjusting the height spacing of the corona generating electrode relative to the surface the adjusting system includes a first bridge member adjacent to the inboard wire mount and a second bridge member adjacent to the outboard wire mount, the first bridge member and second bridge member contacts the wire to change the distance of the wire relative to the surface.Type: GrantFiled: May 22, 2007Date of Patent: July 27, 2010Assignee: Xerox CorporationInventor: James D Walsh
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Publication number: 20100061770Abstract: This is a thumper assembly that is positioned in a developer station of a xerographic marking system. A waste container connected to a drop tube collects waste developer from this station. A magnet prevents magnetic developer from moving through the tube when the container is removed. Once a new container is installed, the magnet is moved away from the tube thereby allowing magnetic developer lodged therein to again move through the tube. A thumper is moved striking the tube to further dislodge developer and allow this developer to move through the tube into the waste container.Type: ApplicationFiled: November 4, 2008Publication date: March 11, 2010Applicant: XEROX CORPORATIONInventors: JAMES D. WALSH, TIMOTHY P. FOLEY
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Publication number: 20090304424Abstract: This is a baffle used in a transfer station of an electrophotographic marking system. The baffle has a series of air passages that, when these passages are opened, they apply pressure to a sheet of paper and push it upward against a belt or drum surface of a photoreceptor or photoconductor. The toner imaged photoreceptor then transfers the image to the paper that is in contact with it. From the transfer station, the paper with the transferred image is then moved to the fuser station where the image is fused to the paper. The baffle with air passages does not scratch the photoconductor surface as do the prior art systems. Also, the baffle has a much longer useful life than the more costly lift finger transfer blades previously used. A controller senses when a sheet enters the transfer station, senses the paper size, then activates a number of air passages to match the paper size.Type: ApplicationFiled: June 9, 2008Publication date: December 10, 2009Applicant: XEROX CORPORATIONInventor: JAMES D. WALSH
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Publication number: 20090285595Abstract: This is a titanium shield that fits into a discorotron and helps to eliminate destructive effluents. The shield conforms to the shape of the discorotron housing and has side portions that extend beyond the side portions of the discorotron housing. On this extended portion, a grid is attached over the open surface of the discorotron. The extended portions are called ears. These ears have notches to mate with apertures in the grid. The exposed ends of the ears are covered by a guard to prevent the ears from making contact with a photoreceptive surface. Below the ears are upstanding electrical contacts which when viewed from an end view form an H-like configuration with the ears.Type: ApplicationFiled: May 19, 2008Publication date: November 19, 2009Applicant: XEROX CORPORATIONInventor: JAMES D. WALSH
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Patent number: 7549879Abstract: This is a modular connector used to supply electricity and air to a corona assembly. The connector has an electrical component removably positioned on an air component. When one of these components becomes inoperative, it can be detached from the other component, and the detached component replaced with new functional component. The air component is configured to remove effluents such as ozone and NOx from the corona assembly.Type: GrantFiled: November 18, 2008Date of Patent: June 23, 2009Assignee: Xerox CorporationInventor: James D Walsh
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Publication number: 20080307638Abstract: A system and apparatus that removes and collects non-functional wire assemblies from dicorotron units is described. It has a removal tool with flexible levers mounted on the top of a storage box. The removal tool has an open top and bottom, the open bottom is aligned with an opening in the top of the box to permit a dislodged anchor and wire assembly to fall therethrough.Type: ApplicationFiled: August 28, 2008Publication date: December 18, 2008Applicant: XEROX CORPORATIONInventors: Bruce J. Parks, Jamie S. Clayfield, Douglas S. Smith, James D. Walsh, Eliud Robles Flores, Gerald F. Daloia
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Publication number: 20080290276Abstract: A corona generating device for charging a surface including, a housing; the housing including spaced generally parallel side panels; members for holding a corona generating electrode in an operable position within the housing; and system for adjusting the height spacing of the corona generating electrode relative to the surface the adjusting system includes a first bridge member adjacent to the inboard wire mount and a second bridge member adjacent to the outboard wire mount, the first bridge member and second bridge member contacts the wire to change the distance of the wire relative to the surface.Type: ApplicationFiled: May 22, 2007Publication date: November 27, 2008Applicant: XEROX CORPORATIONInventor: James D. Walsh
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Patent number: 7432504Abstract: A system and apparatus that removes and collects non-functional wire assemblies from dicorotron units is described. It has a removal tool mounted on the top of a storage box. The removal tool has an open top and bottom, the open bottom is aligned with an opening in the top of the box to permit a dislodged wire assembly to fall therethrough.Type: GrantFiled: September 27, 2005Date of Patent: October 7, 2008Assignee: Xerox CorporationInventors: Bruce J. Parks, Jamie S. Clayfield, Douglas S. Smith, James D. Walsh, Eliud Robles Flores, Gerald F. Daloia
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Patent number: 7420169Abstract: Electrostatic printing processes utilize corona-charging units. When those units wear out or become faulty, they need to be replaced. This embodiment provides a tool that can be used to remove a faulty electrode wire assembly from the unit. This same tool when loaded with a new wire assembly can insert a new wire assembly into the emptied corona charging unit, sometimes referred to as a dicorotron unit. The tool, therefore, is used both to remove or insert a wire assembly from or into a dicorotron unit.Type: GrantFiled: September 27, 2005Date of Patent: September 2, 2008Assignee: Xerox CorporationInventors: Bruce J. Parks, Jamie S. Clayfield, Douglas S. Smith, James D. Walsh, Eliud Robles Flores, Gerald F. Daloia
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Patent number: 7212221Abstract: Raster Output Scanner (ROS) shutter system capable of blocking and unblocking harmful radiation selectably, semi-automatically or automatically. The system and uses thereof can be applied to various fields including scanners and printers.Type: GrantFiled: November 17, 2004Date of Patent: May 1, 2007Assignee: Xerox CorporationInventors: James D. Walsh, Douglas S. Smith
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Patent number: 6498913Abstract: A static controlling system is provided for effectively and economically controlling static charge build up on a driven web member moving in contact with support structures. The static controlling system includes (a) at least one resistive contact member for contacting the surface of the driven web member, and (b) a bias source coupled to the resistive contact member for biasing the resistive contact member to apply to the surface of the driven web member a neutralizing bias, having a selected polarity and potential level, thereby effectively neutralizing and controlling static charge build up on the driven web member.Type: GrantFiled: August 27, 2001Date of Patent: December 24, 2002Assignee: Xerox CorporationInventors: Ana P. Tooker, Barbara J. Schaeffer, James D. Walsh, William H. Wayman
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Patent number: 6032952Abstract: A document handling system adapted for delivery of input documents to an imaging station of an imaging input terminal, wherein a friction transport belt transports the input documents across an imaging platen of the imaging station. The belt is urged into planar orientation with the platen by a self-levitating pressure loading element in the form of a ski-like member that bears upon the belt for encouraging flat or horizontal orientation of input documents on an imaging platen. The ski like member is provided with a configuration for capturing inherent airflow generated by the transport motion of the belt so as reduce the load pressure produced by the ski when the transport belt is in motion, thereby reducing frictional forces to substantially reduce drag and wear in the document handling system.Type: GrantFiled: April 30, 1997Date of Patent: March 7, 2000Assignee: Xerox CorporationInventor: James D. Walsh
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Patent number: 5755399Abstract: In a document feeding system for unfolding and feeding an elongated web multi-sectional computer form (CF) document from one end of a fan-folded stack in a document input stacking area to an imaging station, a CF document unfolding assistance system is provided by a mounting system cantilever mounting from behind the fan-folded stack a single smoothly radiused cylindrical CF unfolding assistance bar, with a radius of approximately 5 to 8 mm, rotatable between a completely non-obstructing rear storage position and a stationary operating position overlying the document input stacking area, and with a detent system for detaining the CF unfolding assistance bar in the operating position, in which this CF unfolding assistance bar is in a fixed position spaced intermediately above the CF web stack by about 5 cm and extending horizontally over the stack substantially perpendicular to the feeding direction in a position which is spaced closer to the one end of the stack than its opposite end, approximately 11 cm fromType: GrantFiled: April 18, 1997Date of Patent: May 26, 1998Assignee: Xerox CorportionInventors: Mark R. Halvonik, James D. Walsh, Mary Beth Bordeau