Patents by Inventor Paul Zwart
Paul Zwart 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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Patent number: 11788633Abstract: A spool for a spool valve assembly defines a spool longitudinal axis and includes a first land module defining a first land module circumferential surface, a second land module defining a second land module circumferential surface, and a first metering module. The first metering module has a first end cap and a second end cap. The first end cap is coupled to the first land module, and the second end cap is coupled to the second land module, to form the spool. The first metering module may further include at least two pillars extending from the first end cap to the second end cap, wherein the at least two pillars are entirely disposed within a virtual first metering module hollow cylinder area that surrounds a virtual first metering module central core area concentric with the spool longitudinal axis.Type: GrantFiled: August 6, 2021Date of Patent: October 17, 2023Assignee: Caterpillar Inc.Inventors: Kevin L. Martin, Paul A. Zwart, Michael C. Marstall, Mikhail A. Sorokin
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Publication number: 20230279957Abstract: A method of manufacturing a hydraulic valve component using additive manufacturing includes laying successive layers to form a flow aperture for a hydraulic valve component, and creating a lattice or mesh structure that at least partially defines the flow aperture of the hydraulic valve component, or a feature that forms an undercut along a direction that is parallel to a flow direction of the flow aperture, or a flow aperture having a size varying along a circumferential direction of the valve component.Type: ApplicationFiled: May 8, 2023Publication date: September 7, 2023Applicant: Caterpillar Inc.Inventors: Kevin L. MARTIN, Paul A. ZWART, Michael Charles MARSTALL, Mikhail A. SOROKIN, Lonnie James DEVIER
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Patent number: 11662031Abstract: A method of manufacturing a hydraulic valve component using additive manufacturing includes laying successive layers to form a flow aperture for a hydraulic valve component, and creating a lattice or mesh structure that at least partially defines the flow aperture of the hydraulic valve component, or a feature that forms an undercut along a direction that is parallel to a flow direction of the flow aperture, or a flow aperture having a size varying along a circumferential direction of the valve component.Type: GrantFiled: March 2, 2021Date of Patent: May 30, 2023Assignee: Caterpillar Inc.Inventors: Kevin L. Martin, Paul A. Zwart, Michael Charles Marstall, Mikhail A. Sorokin, Lonnie James Devier
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Publication number: 20220364490Abstract: An injector for a diesel exhaust fluid (DEF) delivery system includes a first conduit extending along a longitudinal direction; a second conduit extending along the longitudinal direction and disposed within the first conduit; a nozzle tip having a side wall and an end wall; and a shell surrounding the first conduit and being spaced apart from the first conduit along a radial direction. The side wall has a thickness extending along the radial direction from an external surface of the nozzle tip to an inner surface of the second conduit. The end wall defines an outlet flow passage therethrough, and the outlet flow passage is in fluid communication with the first conduit and the second conduit via a chamber defined by an internal surface of the nozzle tip.Type: ApplicationFiled: May 11, 2021Publication date: November 17, 2022Applicant: Caterpillar Inc.Inventors: Samuel S. Kumar, Matthew F. Fahrenkrug, Daniel R. Barb, Ramakrishna Manda, Paul A. Zwart, Thierry A. Marchione, Kevin L. Martin
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Publication number: 20220282742Abstract: A method of manufacturing a hydraulic valve component using additive manufacturing includes laying successive layers to form a flow aperture for a hydraulic valve component, and creating a lattice or mesh structure that at least partially defines the flow aperture of the hydraulic valve component, or a feature that forms an undercut along a direction that is parallel to a flow direction of the flow aperture, or a flow aperture having a size varying along a circumferential direction of the valve component.Type: ApplicationFiled: March 2, 2021Publication date: September 8, 2022Applicant: Caterpillar Inc.Inventors: Kevin L. Martin, Paul A. Zwart, Michael Charles Marstall, Mikhail A. Sorokin, Lonnie James Devier
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Patent number: 10774718Abstract: An injection apparatus includes an injection mixing platform located within an exhaust pipe; wherein the injection mixing platform includes two or more mixing blades extending radially from a common central hub, at least one of the mixing blades being coupled to a DEF inlet to receive DEF from an external tank, wherein each of the two or more mixing blades includes at least one nozzle to eject the DEF into an exhaust stream, the two or more mixing blades being statically mounted to an inner surface of the exhaust pipe.Type: GrantFiled: October 31, 2018Date of Patent: September 15, 2020Assignee: Caterpillar Inc.Inventors: Ramakrishna V. Manda, Kevin L. Martin, Paul A. Zwart, Andrew M. Denis
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Publication number: 20200131968Abstract: An injection apparatus includes an injection mixing platform located within an exhaust pipe; wherein the injection mixing platform includes two or more mixing blades extending radially from a common central hub, at least one of the mixing blades being coupled to a DEF inlet to receive DEF from an external tank, wherein each of the two or more mixing blades includes at least one nozzle to eject the DEF into an exhaust stream, the two or more mixing blades being statically mounted to an inner surface of the exhaust pipe.Type: ApplicationFiled: October 31, 2018Publication date: April 30, 2020Applicant: Caterpillar Inc.Inventors: Ramakrishna V. Manda, Kevin L. Martin, Paul A. Zwart, Andrew M. Denis
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Patent number: 7463813Abstract: A medical examination system includes a medical examination device and a control device to operate the medical examination device. The control device transmits signals including control signals accompanied by an identification code. The examination device is provided with a verifier to verify the identification code and is arranged to accept the corresponding control signals when the identification code is correct, and to reject the corresponding control signals when the identification code is not correct. The examination system further automatically communicates the identification code between the control device and the examination device.Type: GrantFiled: September 19, 2003Date of Patent: December 9, 2008Assignee: Koninklijke Philips Electronics N.V.Inventor: Paul Zwart
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Publication number: 20070226656Abstract: The invention relates to a graphic user interface comprising an interaction area for interacting with a user, said graphic user interface being arranged to position a cursor within the interaction area, wherein a precision interaction point is assigned to the cursor in order to enable said positioning, said precision interaction point being defined as a preset fraction of a distance between a user definable stationary interaction point 11 and a user definable movable interaction point 13. Preferably, both points 11, 13 are indicated to the user during the procedure of setting the precision interaction point 17, as well as the actual position of the precision interaction point 17 for a visual feed back. In case the user is not satisfied with the current position of the precision interaction point 17, he further moves the movable interaction point 13 thus repositioning the precision interaction point until his satisfaction. Usually, for user's convenience, the value of the fraction is set to 0.Type: ApplicationFiled: April 28, 2005Publication date: September 27, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventor: Paul Zwart
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Publication number: 20060165371Abstract: The invention refers to a medical examination system (1) comprising a medical examination device (2) and a control device (3) to operate the medical examination device. The control device transmits signals comprising control signals accompanied by an identification code (Key A). The examination device is provided with means (10) to verify the identification code and is arranged to accept the corresponding control signals when the identification code is correct and to reject the corresponding control signals when the identification code is not correct. The examination system further comprises means (6) for automatically communicating the identification code between the control device (3) and the examination device (2).Type: ApplicationFiled: September 19, 2003Publication date: July 27, 2006Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventor: Paul Zwart
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Patent number: 6738081Abstract: A method of providing a display (10) for a graphical user interface in which a user may define a selected region (20) of a subject image (3) is disclosed together with a computer program, a computer-readable storage medium (72) and apparatus for the same (71). The method comprising the steps of displaying the subject image (3); displaying at least one mask (12, 13, 14, 15) over the subject image wherein at least part of the or each mask extends to the periphery of the subject image (11); and defining the selected region (20) as those parts of the subject image not covered by a mask. The or each mask has a geometry which may vary in accordance with a user's input whereby the user selecting a first point within a mask and a second point displaced therefrom causes the geometry of that mask to vary in relation to the displacement (16, 17, 18, 19, 21) between the first and second points.Type: GrantFiled: December 22, 2000Date of Patent: May 18, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Ashok Gupta, Judith F. M. Masthoff, Paul Zwart
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Patent number: 6584173Abstract: The invention concerns an X-ray examination device, including an X-ray source and an X-ray detector, for forming an X-ray image of an object, an X-ray filter, arranged between the X-ray source and the X-ray detector, and adjusting circuit, connected to the X-ray filter for adjusting it. The adjusting circuit comprises a graphics device, cursor control for defining a region of interest in an image of the object, displayed on the graphics device, and image-processing unit, connected to the X-ray filter, for calculating the region of interest and adjusting the filter accordingly. The X-ray filter includes filter elements having an X-ray absorptivity which can be adjusted by controlling a quantity of X-ray absorbing liquid within the individual filter elements. The filter elements are capillary tubes, and adjusting circuit applies electric voltages to the individual capillary tube for controlling the quantity of X-ray absorbing liquid in the tube.Type: GrantFiled: September 18, 2001Date of Patent: June 24, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Paul Zwart, Robert Derk Jan Hendrik Hofsink
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Publication number: 20020051516Abstract: The invention concerns an X-ray examination device, including an X-ray source and an X-ray detector, for forming an X-ray image of an object, an X-ray filter, arranged between the X-ray source and the X-ray detector, and adjusting means, connected to the X-ray filter for adjusting it. The adjusting means comprise a graphics device, cursor control means for defining a region of interest in an image of said object, displayed on said graphics device, and processing means, connected to the X-ray filter, for calculating the region of interest and adjusting the filter accordingly. The X-ray filter includes filter elements having an X-ray absorptivity which can be adjusted by controlling a quantity of X-ray absorbing liquid within the individual filter elements. The filter elements are capillary tubes, and means for applying electric voltages to the individual capillary tubes are provided for controlling the quantity of X-ray absorbing liquid therein.Type: ApplicationFiled: September 18, 2001Publication date: May 2, 2002Inventors: Paul Zwart, Robert Derk Jan Hendrik Hofsink
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Publication number: 20020033797Abstract: A parameter is set to an accurate value, by voice control or manual input, by giving the commands Up, Down and Stop. The command “Up” increases the value of the parameter at a first speed; a subsequent command “Up” increases the value at a greater speed; alternatively a subsequent command “Down” decreases the value at a lower speed than the first speed. The parameter can be, for example, screen brightness or viewing angle in a medical domain, or channel in a multi-channel television set.Type: ApplicationFiled: September 18, 2001Publication date: March 21, 2002Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Judith F.M. Masthoff, Ashok Gupta, Paul Zwart
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Publication number: 20010024200Abstract: A method of providing a display (10) for a graphical user interface in which a user may define a selected region (20) of a subject image (3) is disclosed together with a computer program, a computer-readable storage medium (72) and apparatus for the same (71). The method comprising the steps of displaying the subject image (3); displaying at least one mask (12, 13, 14, 15) over the subject image wherein at least part of the or each mask extends to the periphery of the subject image (11); and defining the selected region (20) as those parts of the subject image not covered by a mask. The or each mask has a geometry which may vary in accordance with a user's input whereby the user selecting a first point within a mask and a second point displaced therefrom causes the geometry of that mask to vary in relation to the displacement (16, 17, 18, 19, 21) between the first and second points.Type: ApplicationFiled: December 22, 2000Publication date: September 27, 2001Applicant: PHILIPS CORPORATIONInventors: Ashok Gupta, Judith F.M. Masthoff, Paul Zwart