Patents by Inventor John Gardner Fischer
John Gardner Fischer 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: 6877525Abstract: A check valve for a fuel pump of a vehicle includes a valve housing adapted to be disposed in an outlet member of the fuel pump and a valve seat formed on the valve housing. The check valve also includes a valve member disposed in the valve housing and having a closed position to engage the valve seat to prevent fuel from flowing through the outlet member and an open position to allow fuel to flow through the outlet member. The valve member has at least one outlet port a predetermined dwell distance from the valve seat when the valve member is in the closed position and allows fluid flow past the valve seat when the valve member is in the open position.Type: GrantFiled: November 7, 2001Date of Patent: April 12, 2005Assignee: Delphi Technologies, Inc.Inventors: John Gardner Fischer, Robert A. Roth
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Patent number: 6623237Abstract: A wear resistant fuel pump for a vehicle includes a pump section having a rotatable impeller and a plurality of plates disposed axially adjacent to and cooperating with the impeller to pump fuel therethrough. The wear resistant fuel pump also includes a motor section disposed adjacent the pump section and having a motor to rotate the impeller. The wear resistant fuel pump further includes an outlet section disposed adjacent the motor section to allow pumped fuel to exit therethrough. The impeller is made of a first compound and the plates are made of a second compound having an abrasion wear resistance on a surface thereof that improves abrasion wear characteristics therebetween.Type: GrantFiled: August 21, 2001Date of Patent: September 23, 2003Assignee: Delphi Technologies, Inc.Inventors: David Edward Harris, John Gardner Fischer
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Publication number: 20030084941Abstract: A check valve for a fuel pump of a vehicle includes a valve housing adapted to be disposed in an outlet member of the fuel pump and a valve seat formed on the valve housing. The check valve also includes a valve member disposed in the valve housing and having a closed position to engage the valve seat to prevent fuel from flowing through the outlet member and an open position to allow fuel to flow through the outlet member. The valve member has at least one outlet port a predetermined dwell distance from the valve seat when the valve member is in the closed position and allows fluid flow past the valve seat when the valve member is in the open position.Type: ApplicationFiled: November 7, 2001Publication date: May 8, 2003Inventors: John Gardner Fischer, Robert A. Roth
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Publication number: 20030051757Abstract: A check valve for a fuel pump of a vehicle includes a valve housing adapted to be disposed in an outlet member of the fuel pump. The valve housing has a valve seat formed thereon. The check valve also includes a valve member adapted to be disposed in the outlet member and cooperating with said valve seat. The check valve further includes a nonlinear spring adapted to be disposed in the outlet member and cooperating with the valve member to move the valve member to a closed position to engage the valve seat to prevent fuel from flowing through the outlet member and an open position spaced from the valve seat to allow fuel to flow through the outlet member.Type: ApplicationFiled: September 20, 2001Publication date: March 20, 2003Inventors: Robert A. Roth, John Gardner Fischer
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Publication number: 20030039539Abstract: A wear resistant fuel pump for a vehicle includes a pump section having a rotatable impeller and a plurality of plates disposed axially adjacent to and cooperating with the impeller to pump fuel therethrough. The wear resistant fuel pump also includes a motor section disposed adjacent the pump section and having a motor to rotate the impeller. The wear resistant fuel pump further includes an outlet section disposed adjacent the motor section to allow pumped fuel to exit therethrough. The impeller is made of a first compound and the plates are made of a second compound having an abrasion wear resistance on a surface thereof that improves abrasion wear characteristics therebetween.Type: ApplicationFiled: August 21, 2001Publication date: February 27, 2003Inventors: David Edward Harris, John Gardner Fischer
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Patent number: 6499941Abstract: A fuel pump for a vehicle includes a pump section having a flow channel and a rotatable impeller cooperating with said flow channel to pump fuel therethrough. The fuel pump also includes a motor section disposed adjacent the pump section and having a motor to rotate the impeller. The fuel pump further includes an outlet section disposed adjacent the motor section to allow pumped fuel to exit the fuel pump. The pump section includes a mechanism for minimizing leakage of fuel from the flow channel radially and equalizing pressure across a sealing surface of the impeller.Type: GrantFiled: August 31, 2000Date of Patent: December 31, 2002Assignee: Delphi Technologies, Inc.Inventor: John Gardner Fischer
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Patent number: 6464450Abstract: A fuel pump for a vehicle includes a pump section having a flow channel and a rotatable impeller cooperating with said flow channel to pump fuel therethrough. The fuel pump also includes a motor section disposed adjacent the pump section and having a motor to rotate the impeller. The fuel pump further includes an outlet section disposed adjacent the motor section to allow pumped fuel to exit the fuel pump. The pump section includes a mechanism for minimizing leakage of fuel from the flow channel radially.Type: GrantFiled: September 6, 2000Date of Patent: October 15, 2002Assignee: Delphi Technologies, Inc.Inventor: John Gardner Fischer
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Patent number: 6454520Abstract: A novel impeller for a regenerative turbine fuel includes a hub and a plurality of V-shaped vanes that project radially outward. The hub defines an aperture into which the shaft of the pump is securable. Each V-shaped vane includes a pair of fin members. Each fin member has an inner sidewall and an outer sidewall. The fin members of each vane are adjoined by their inner sidewalls. From their adjoined inner sidewalls, the fin members of each vane diverge to their respective outer sidewalls. In particular, the fin members of each vane diverge at a prespecified angle relative to a plane that lies normal to the center axis and also bisects the hub. Along at least part of its length, the trailing corner of each outer sidewall of each V-shaped vane is chamfered. The chamfer is made at a predetermined angle relative to the aforementioned plane.Type: GrantFiled: May 16, 2000Date of Patent: September 24, 2002Assignee: Delphi Technologies, Inc.Inventors: Dale M. Pickelman, John Gardner Fischer
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Patent number: 6439833Abstract: A novel impeller for a regenerative turbine fuel pump improves the efficiency of the pump and yet still retains a geometry that allows it to be manufactured by conventional injection molding techniques at a relatively low cost. The impeller comprises a hub, an outer ring and a plurality of innovative V-shaped vanes. The hub defines an aperture into which the shaft of the pump is securable to allow the hub to rotate about a center axis. The outer ring is concentric to the hub. The vanes extend from an outer surface of the hub to an inner surface of the outer ring. Each vane comprises an entrance portion that extends from the outer surface of the hub and an exit portion that extends from the entrance portion to the inner surface of the outer ring. Each vane has a V-shape of a prespecified angle centered relative to a plane normal to the center axis.Type: GrantFiled: August 31, 2000Date of Patent: August 27, 2002Assignee: Delphi Technologies, Inc.Inventors: Dale M. Pickelman, John Gardner Fischer
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Patent number: 6435810Abstract: A wear resistant fuel pump for a vehicle includes a pump section having a flow channel and a rotatable impeller cooperating with the flow channel. The wear resistant fuel pump also includes a motor section disposed adjacent the pump section and having a motor to rotate the impeller. The wear resistant fuel pump further includes an outlet section disposed adjacent the motor section to allow pumped fuel to exit the fuel pump. The pump section includes a plurality of plates disposed axially adjacent to and cooperating with the impeller. The impeller and plates are made of a compound having an abrasion wear resistance on a predetermined surface that improves abrasion wear characteristics.Type: GrantFiled: October 20, 2000Date of Patent: August 20, 2002Assignee: Delphi Technologies, Inc.Inventors: John Gardner Fischer, John J. Giacchina, Ismat Ali Abu-Isa
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Patent number: 6402460Abstract: An abrasion wear resistant fuel pump for a vehicle includes a pump section having a flow channel and a rotatable impeller cooperating with said flow channel to pump fuel therethrough. The fuel pump also includes a motor section disposed adjacent the pump section and having a motor to rotate the impeller. The fuel pump further includes an outlet section disposed adjacent the motor section to allow pumped fuel to exit the fuel pump. The pump section includes a plurality of plates disposed axially adjacent to and cooperating with the impeller. The impeller and plates are made of a composite material that improves abrasion wear characteristics therebetween.Type: GrantFiled: August 1, 2000Date of Patent: June 11, 2002Assignee: Delphi Technologies, Inc.Inventors: John Gardner Fischer, John J. Giacchina, Ismat Ali Abu-Isa
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Patent number: 6106240Abstract: A gerotor pump including a ring gear and a pinion gear supported on a pump housing for rotation about parallel, laterally separated centerlines. A plurality of pump chambers defined by the teeth of the ring and pinion gears expand in an inlet half of a crescent-shaped cavity between the ring and pinion gears and collapse in a discharge half. An inlet port in a first side wall of the pump housing faces the inlet half of the crescent-shaped cavity. A primary discharge port in an opposite second side wall of the pump housing faces the discharge half of the crescent-shaped cavity and is timed relative to the inlet port for pumping low bulk modulus fluid. A shallow groove in the first end wall of the housing defines a secondary discharge port timed relative to the inlet port for pumping high bulk modulus fluid. In the timing interval between the secondary and the primary discharge ports, i.e.Type: GrantFiled: April 27, 1998Date of Patent: August 22, 2000Assignee: General Motors CorporationInventors: John Gardner Fischer, Giulio Angel Ricci-Ottati
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Patent number: RE39891Abstract: A novel impeller for a regenerative turbine fuel pump improves the efficiency of the pump and yet still retains a geometry that allows it to be manufactured by conventional injection molding techniques at a relatively low cost. The impeller comprises a hub, an outer ring and a plurality of innovative V-shaped vanes. The hub defines an aperture into which the shaft of the pump is securable to allow the hub to rotate about a center axis. The outer ring is concentric to the hub. The vanes extend from an outer surface of the hub to an inner surface of the outer ring. Each vane comprises an entrance portion that extends from the outer surface of the hub and an exit portion that extends from the entrance portion to the inner surface of the outer ring. Each vane has a V-shape of a prespecified angle centered relative to a plane normal to the center axis.Type: GrantFiled: April 8, 2004Date of Patent: October 23, 2007Assignee: Delphi Technologies, Inc.Inventors: Dale M. Pickelman, John Gardner Fischer