Patents by Inventor Harry Hunnicutt
Harry Hunnicutt 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: 20080047622Abstract: A MEMS device is disclosed having a single microvalve actuator for controlling multiple microvalves.Type: ApplicationFiled: March 30, 2007Publication date: February 28, 2008Inventors: Edward Fuller, Harry Hunnicutt
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Patent number: 7234707Abstract: An Active Roll Control System for a motor vehicle that utilizes small valves to control large flows. Flow is supplied by a hydraulic pump which is powered in some fashion by the motor vehicle. Flow is directed to the actuators by a three-position-four-way valve that is controlled by two pairs of small ABS style solenoid valves. This allows for a minimum of power to be supplied by the vehicle to operate the system. Also, this valve arrangement allows a desirable failure mode whereby hydraulic fluid is locked into the hydraulic actuators, there by locking in the anti-roll bar in case of a system failure.Type: GrantFiled: November 30, 2004Date of Patent: June 26, 2007Assignee: Kelsey-Hayes CompanyInventors: Steve J. Green, Greg Campau, Harry Hunnicutt
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Patent number: 6994115Abstract: A microvalve having a generally planar plate valve body defining a chamber and a plate valve member movable in the chamber about a pivot axis that is perpendicular to the valve body to control the flow of a fluid through the valve body. The plate valve member defines a pair of opposite faces, a first duct therethrough provides fluid communication between the opposite faces to equalize fluid pressures acting on the opposite faces in the region of the first duct. The plate valve member also has a second duct therethrough that provides fluid communication between the opposite faces to equalize fluid pressures acting on the opposite faces in the region of the second duct. The first duct and the second duct are equidistant from the pivot axis.Type: GrantFiled: January 24, 2005Date of Patent: February 7, 2006Assignee: Kelsey-Hayes CompanyInventor: Harry A. Hunnicutt
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Publication number: 20050146098Abstract: An Active Roll Control System for a motor vehicle that utilizes small valves to control large flows. Flow is supplied by a hydraulic pump which is powered in some fashion by the motor vehicle. Flow is directed to the actuators by a three-position-four-way valve that is controlled by two pairs of small ABS style solenoid valves. This allows for a minimum of power to be supplied by the vehicle to operate the system. Also, this valve arrangement allows a desirable failure mode whereby hydraulic fluid is locked into the hydraulic actuators, there by locking in the anti-roll bar in case of a system failure.Type: ApplicationFiled: November 30, 2004Publication date: July 7, 2005Inventors: Steve Green, Greg Campau, Harry Hunnicutt
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Publication number: 20050121090Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. The body further has first and second pilot ports placed in fluid communication with the cavity. The body also has first and second primary ports placed in fluid communication with the cavity. Each port is adapted for connection with a designated fluid source. A pilot valve supported by the body is movably disposed in the cavity for opening and closing the first and second pilot ports. An actuator is operably coupled to the pilot valve for moving the pilot valve. A microvalve is positioned by the fluid controlled by the pilot valve. The microvalve is a slider valve having a first end and a second end. The slider valve is movably disposed in the cavity for movement between a first position and a second position. The first end of the slider valve is in fluid communication with the first and second pilot ports when the first and second pilot ports are open.Type: ApplicationFiled: January 24, 2005Publication date: June 9, 2005Inventor: Harry Hunnicutt
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Patent number: 6875114Abstract: A coupling having slots for receiving drive tabs of an associated driving shaft and a driven shaft, wherein the tabs of the driving shaft and the driven shaft are tapered to militate against rotational play between the driving shaft and the driven shaft which results in undesirable wear and damage to the drive shafts and coupling.Type: GrantFiled: March 21, 2003Date of Patent: April 5, 2005Assignee: Kelsey-Hayes CompanyInventors: Richard J. Barron, Harry A. Hunnicutt
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Patent number: 6845962Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. The body further has first and second pilot ports placed in fluid communication with the cavity. The body also has first and second primary ports placed in fluid communication with the cavity. Each port is adapted for connection with a designated fluid source. A pilot valve supported by the body is movably disposed in the cavity for opening and closing the first and second pilot ports. An actuator is operably coupled to the pilot valve for moving the pilot valve. A microvalve is positioned by the fluid controlled by the pilot valve. The microvalve is a slider valve having a first end and a second end. The slider valve is movably disposed in the cavity for movement between a first position and a second position. The first end of the slider valve is in fluid communication with the first and second pilot ports when the first and second pilot ports are open.Type: GrantFiled: March 22, 2000Date of Patent: January 25, 2005Assignee: Kelsey-Hayes CompanyInventors: Richard J. Barron, Kirt R. Williams, E. Nelson Fuller, Harry A. Hunnicutt
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Publication number: 20040185944Abstract: A coupling having slots for receiving drive tabs of an associated driving shaft and a driven shaft, wherein the tabs of the driving shaft and the driven shaft are tapered to militate against rotational play between the driving shaft and the driven shaft which results in undesirable wear and damage to the drive shafts and coupling.Type: ApplicationFiled: March 21, 2003Publication date: September 23, 2004Inventors: Richard J. Barron, Harry A. Hunnicutt
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Publication number: 20040185945Abstract: A coupling having slots for receiving drive tabs of an associated driving shaft and a driven shaft, wherein the tabs of the driving shaft and the driven shaft are tapered to militate against rotational play between the driving shaft and the driven shaft which results in undesirable wear and damage to the drive shafts and coupling.Type: ApplicationFiled: March 21, 2003Publication date: September 23, 2004Inventors: Richard J. Barron, Harry A. Hunnicutt
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Patent number: 6764286Abstract: A piston pump comprises cylinder attached within a cavity of a pump housing. An outlet check valve seat is defined about an outlet of the cylinder. A piston is slidably received in a bore of the cylinder and has a first passageway formed therein. A cylinder head encloses the outlet of the cylinder and defines a second passageway therein. The first passageway has an inlet in fluid communication with the cavity of the pump housing, and an outlet in fluid communication with a pumping chamber defined in the pump housing. A first spring retains the piston to the cylinder. A first check valve member is a ball retained near a valve seat formed in the first passageway of the piston by a disk spring, and allows fluid to flow only from the inlet to the outlet of the piston.Type: GrantFiled: October 29, 2001Date of Patent: July 20, 2004Assignee: Kelsey-Hayes CompanyInventors: Harry A. Hunnicutt, Richard J. Barron, Peter Every
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Patent number: 6755761Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. An electronically controlled automatic transmission, comprising of an input shaft; an output shaft; a plurality of gears providing driving connection between the input shaft and the output shaft; one of a hydraulically operated brake band and a hydraulically operated clutch which is operable to effect a change in the gear reduction provided by the gears between the input shaft and the output shaft; a source of pressurized hydraulic fluid; and a microvalve device selectively operable to control passage of pressurized hydraulic fluid from the source to the one of a hydraulically operated brake band and a hydraulically operated clutch to operate the one of a hydraulically operated brake band and a hydraulically operated clutch.Type: GrantFiled: November 11, 2002Date of Patent: June 29, 2004Assignee: Kelsey-Hayes CompanyInventors: Harry A. Hunnicutt, Edward Nelson Fuller
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Patent number: 6719104Abstract: The invention relates to a composite brake caliper and method for producing the same. The method for producing the composite brake caliper comprises the steps of: (a) providing a molding apparatus having at least a pair of mold sections, at least one of the pair of mold sections including at least one projection extending from a surface thereof; (b) providing at least one reinforced preform formed from at least a first material, the preform having at least one opening formed at least partially therein; (d) positioning the preform in the molding apparatus with the projection of the mold section extending into the opening of the preform so as to orient the preform in a predetermined position within the molding apparatus; and (e) casting a caliper body formed from a second material in situ therewith to produce the composite brake caliper.Type: GrantFiled: December 28, 2001Date of Patent: April 13, 2004Assignee: Kelsey-Hayes CompanyInventors: Jonathan Wemple, Perry Jenkins, Harry A. Hunnicutt
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Patent number: 6694998Abstract: A microvalve device includes a first plate, a second plate and a third plate. The second plate is connected between the first plate and the third plate. The second plate contains a stationary element and a moveable plate valve slider element. The slider element variably restricts the flow of a fluid through the microvalve device. The second plate defines a first supply port, an output conduit, and a return port. In a pressure increase position, the slider element allows the fluid to flow from the first supply port to the output conduit. In a pressure hold position, the slider element isolates the output conduit from both the first supply port and the return port. The pressure decrease position allows fluid to flow from the output conduit to the return port. Pressure from the output conduit acts against a first axial end face of the slider element.Type: GrantFiled: July 31, 2001Date of Patent: February 24, 2004Assignee: Kelsey-Hayes CompanyInventor: Harry A. Hunnicutt
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Patent number: 6637722Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. A pilot valve supported by the body is movably disposed in the cavity for opening and closing pilot ports formed in the body. A pilot operated microvalve is positioned by the pressure of the fluid controlled by the pilot valve.Type: GrantFiled: January 22, 2003Date of Patent: October 28, 2003Assignee: Kelsey-Hayes CompanyInventor: Harry A. Hunnicutt
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Publication number: 20030136926Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. A pilot valve supported by the body is movably disposed in the cavity for opening and closing pilot ports formed in the body. A pilot operated microvalve is positioned by the pressure of the fluid controlled by the pilot valve.Type: ApplicationFiled: January 22, 2003Publication date: July 24, 2003Inventor: Harry A. Hunnicutt
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Publication number: 20030092526Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. An electronically controlled automatic transmission, comprising of an input shaft; an output shaft; a plurality of gears providing driving connection between the input shaft and the output shaft; one of a hydraulically operated brake band and a hydraulically operated clutch which is operable to effect a change in the gear reduction provided by the gears between the input shaft and the output shaft; a source of pressurized hydraulic fluid; and a microvalve device selectively operable to control passage of pressurized hydraulic fluid from the source to the one of a hydraulically operated brake band and a hydraulically operated clutch to operate the one of a hydraulically operated brake band and a hydraulically operated clutch.Type: ApplicationFiled: November 11, 2002Publication date: May 15, 2003Inventors: Harry A. Hunnicutt, Edward Nelson Fuller
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Publication number: 20030086801Abstract: A piston pump comprises cylinder attached within a cavity of a pump housing. An outlet check valve seat is defined about an outlet of the cylinder. A piston is slidably received in a bore of the cylinder and has a first passageway formed therein. A cylinder head encloses the outlet of the cylinder and defines a second passageway therein. The first passageway has an inlet in fluid communication with the cavity of the pump housing, and an outlet in fluid communication with a pumping chamber defined in the pump housing. A first spring retains the piston to the cylinder. A first check valve member is a ball retained near a valve seat formed in the first passageway of the piston by a disk spring, and allows fluid to flow only from the inlet to the outlet of the piston.Type: ApplicationFiled: October 29, 2001Publication date: May 8, 2003Inventors: Harry A. Hunnicutt, Richard J. Barron, Peter Every
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Patent number: 6540203Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. A pilot valve supported by the body is movably disposed in the cavity for opening and closing pilot ports formed in the body. A pilot operated microvalve is positioned by the pressure of the fluid controlled by the pilot valve.Type: GrantFiled: March 28, 2002Date of Patent: April 1, 2003Assignee: Kelsey-Hayes CompanyInventor: Harry A. Hunnicutt
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Patent number: 6494804Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device comprises a body having a cavity formed therein. An electronically controlled automatic transmission, comprising of an input shaft; an output shaft; a plurality of gears providing driving connection between the input shaft and the output shaft; one of a hydraulically operated brake band and a hydraulically operated clutch which is operable to effect a change in the gear reduction provided by the gears between the input shaft and the output shaft; a source of pressurized hydraulic fluid; and a microvalve device selectively operable to control passage of pressurized hydraulic fluid from the source to the one of a hydraulically operated brake band and a hydraulically operated clutch to operate the one of a hydraulically operated brake band and a hydraulically operated clutch.Type: GrantFiled: June 20, 2000Date of Patent: December 17, 2002Assignee: Kelsey-Hayes CompanyInventors: Harry A. Hunnicutt, Edward Nelson Fuller
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Patent number: 6279606Abstract: A microvalve device for controlling fluid flow in a fluid circuit. The microvalve device includes a body defining a chamber, an inlet port and an outlet port. The inlet port is connected in fluid communication with the chamber and is adapted for connection with a first fluid source. The outlet port is connected in fluid communication with the chamber and is adapted for connection with a second fluid source. A check valve is movably disposed in the chamber for movement between a closed position and a fully opened position by differential pressure across the check valve. When the check valve is placed in the fully opened position, fluid is allowed to flow from the inlet port to the outlet port through the chamber. When placed in the closed position, the check valve restricts fluid from flowing between the inlet and outlet ports.Type: GrantFiled: October 18, 1999Date of Patent: August 28, 2001Assignee: Kelsey-Hayes CompanyInventors: Harry A. Hunnicutt, Paul M. Schliebe