Patents by Inventor Michael J. Warwick
Michael J. Warwick 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: 20190032727Abstract: An electromagnetic clutch assembly includes a rotor assembly operable to rotate about an axis. The electromagnetic clutch assembly also includes an armature assembly operable to rotate about the axis. The electromagnetic clutch assembly also includes an electromagnetic coupling system operable to generate a magnetic field. The magnetic field induces the rotor assembly and the armature assembly against one another along the axis for frictional engagement such that the rotor assembly and the armature assembly rotate together. The electromagnetic clutch assembly also includes an air gap defined between the rotor assembly and the armature assembly when the rotor assembly and the armature assembly are in frictional engagement. In another implementation, at least one plate is positioned between the rotor assembly and the armature assembly such that magnetic flux passes through the at least one plate. The plate is formed from a mixture of powdered metal and solid lubricant.Type: ApplicationFiled: September 18, 2018Publication date: January 31, 2019Inventors: Michael J. Hornbrook, Brian W. Franke, Michael J. Warwick, Mark C. Barnholt
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Patent number: 10077812Abstract: An electromagnetic clutch assembly includes a rotor assembly operable to rotate about an axis. The electromagnetic clutch assembly also includes an armature assembly operable to rotate about the axis. The electromagnetic clutch assembly also includes an electromagnetic coupling system operable to generate a magnetic field. The magnetic field induces the rotor assembly and the armature assembly against one another along the axis for frictional engagement such that the rotor assembly and the armature assembly rotate together. The electromagnetic clutch assembly also includes an air gap defined between the rotor assembly and the armature assembly when the rotor assembly and the armature assembly are in frictional engagement. In another implementation, at least one plate is positioned between the rotor assembly and the armature assembly such that magnetic flux passes through the at least one plate. The plate is formed from a mixture of powdered metal and solid lubricant.Type: GrantFiled: November 5, 2015Date of Patent: September 18, 2018Assignee: Eaton CorporationInventors: Michael J. Hornbrook, Brian W. Franke, Michael J. Warwick, Mark C. Barnholt
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Publication number: 20160053827Abstract: An electromagnetic clutch assembly includes a rotor assembly operable to rotate about an axis. The electromagnetic clutch assembly also includes an armature assembly operable to rotate about the axis. The electromagnetic clutch assembly also includes an electromagnetic coupling system operable to generate a magnetic field. The magnetic field induces the rotor assembly and the armature assembly against one another along the axis for frictional engagement such that the rotor assembly and the armature assembly rotate together. The electromagnetic clutch assembly also includes an air gap defined between the rotor assembly and the armature assembly when the rotor assembly and the armature assembly are in frictional engagement. In another implementation, at least one plate is positioned between the rotor assembly and the armature assembly such that magnetic flux passes through the at least one plate. The plate is formed from a mixture of powdered metal and solid lubricant.Type: ApplicationFiled: November 5, 2015Publication date: February 25, 2016Inventors: Michael J. Hornbrook, Brian W. Franke, Michael J. Warwick, Mark C. Barnholt
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Patent number: 6484790Abstract: A method for forming light-weight composite metal castings incorporating metallurgically bonded inserts for a variety of applications. Castings formed by the invention have particular utility as components of an internal combustion engine. A casting method includes the step of coating the insert with a first layer under conditions including sufficient temperature to cause a portion of the layer to be sacrificed by dissolving into the cast metal material while leaving at least a portion of the first layer as a diffusion barrier between the insert and the cast material. The molten casting material is treated and handled to keep the hydrogen content below 0.15 and preferably below 0.10 parts per million. The casting step takes place under a protective gas environment of dry air, argon or nitrogen with a moisture content of less than 3 parts per million.Type: GrantFiled: August 31, 1999Date of Patent: November 26, 2002Assignees: Cummins Inc., UT-Battelle, LLCInventors: Martin R. Myers, Michael J. Warwick, Yongching Chen, Ramesh Subramanian, Srinath Viswanathan, Karren More, Quingyou Han
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Patent number: 6443211Abstract: A method for forming light-weight composite metal castings incorporating metallurgically bonded inserts for a variety of applications. Castings formed by the invention have a particular utility as components of an internal combustion engine. A casting method includes the step of coating the insert with a first layer which is followed by coating a second layer and concluded by a casting step under conditions including sufficient temperature to cause the second coated layer to be sacrificed by dissolving into the cast metal material while leaving at least a portion of the first layer as a diffusion barrier between the insert and the cast material. The molten casting material is treated and handled to keep the hydrogen content below 0.15 and preferably below 0.10 parts per million. The casting step takes place under a protective gas environment of dry air, argon or nitrogen with a moisture content of less than 3 parts per million.Type: GrantFiled: August 31, 1999Date of Patent: September 3, 2002Assignees: Cummins Inc., UT-Battelle, LLCInventors: Martin R. Myers, Michael J. Warwick, Yongching Chen, Ramesh Subramanian, Srinath Viswanathan, Karren More, Quingyou Han
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Patent number: 6349689Abstract: A tappet assembly for an internal combustion engine, the tappet assembly having a first end mechanically connected to a engine component and second end adapted to contact a cam lobe of a camshaft to displace the engine component, where the tappet assembly includes a tappet body having a recessed pocket positioned at one end thereof, the recessed pocket being defined by an extended peripheral lip of said tappet body, a ceramic wear pad at least partially received within the recessed pocket, and a mechanism for preventing the ceramic wear pad from rotating relative to the recessed pocket. The ceramic wear pad has a top surface for contacting the cam lobe, a bottom surface which is received in the recessed pocket, and a peripheral edge surface thereinbetween.Type: GrantFiled: April 18, 2000Date of Patent: February 26, 2002Assignee: Cummins Inc.Inventors: Michael J. Warwick, Bryan E. Blackwell
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Patent number: 6076971Abstract: A reinforcing insert for an engine block formed of an engine block material is provided which is positioned in the bearing saddle area of the block for increasing the strength and stiffness of the bearing saddle area to ensure a secure connection of the main bearing cap throughout engine operation thereby ensuring proper crankshaft support and operation. The reinforcing insert is formed of a material having a higher modulus of elasticity than a modulus of elasticity of the engine block material. The insert includes a lower transverse surface for positioning at a lowermost position in the engine block, an upper surface positioned farthest from the crankshaft, a first and second linear side surfaces for positioning on opposite sides of the crankshaft. The linear sides extend from the lower surface along respective planes in nonparallel relation to each other. The linear sides may extend either in a converging or a diverging manner from the lower surface.Type: GrantFiled: September 15, 1998Date of Patent: June 20, 2000Assignee: Cummins Engine Company, Inc.Inventors: Michael J. Warwick, Martin R. Myers, Yong Ching Chen, Paul C. Becker, Richard Belush
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Patent number: 5954038Abstract: A combustion face insert is provided for connection to a bottom wall of an aluminum cylinder head adjacent a combustion chamber in an internal combustion engine which includes an insert body formed of a material having a predetermined hardness. The insert body includes a lower surface facing the combustion chamber and extending radially outwardly to form an outer peripheral extent having a predetermined size necessary to cause the lower surface to be positioned for engagement with an annular combustion seal to effectively seal the combustion chamber. This design allows a greater power density to be achieved in a heavy duty diesel engine utilizing an aluminum cylinder head, increases the thermal fatigue resistance of the valve bridge area and increases the resistance of an aluminum cylinder head to indentation by the combustion seal of the head gasket during deflection of the aluminum cylinder head.Type: GrantFiled: September 2, 1997Date of Patent: September 21, 1999Assignee: Cummins Engine Company, Inc.Inventors: Michael J. Warwick, James W. Patten, Martin R. Myers, Paul C. Becker, Yong Ching Chen
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Patent number: 5816710Abstract: A reinforcing insert for an engine block formed of a lightweight material is provided which is positioned in the bearing saddle area of the block for increasing the strength and stiffness of the bearing saddle area to ensure a secure connection of the main bearing cap throughout engine operation thereby ensuring proper crankshaft support and operation. The reinforcing insert is formed of a material having a higher modulus of elasticity than a modulus of elasticity of the lightweight engine block material. The insert includes a lower transverse surface for positioning at a lowermost position in the engine block, an upper surface positioned farthest from the crankshaft, a first and second linear side surfaces for positioning on opposite sides of the crankshaft. The linear sides extend from the lower surface along respective planes in nonparallel relation to each other. The linear sides may extend either in a converging or a diverging manner from the lower surface.Type: GrantFiled: July 1, 1997Date of Patent: October 6, 1998Assignee: Cummins Engine Company, Inc.Inventors: Michael J. Warwick, Martin R. Myers, Yong Ching Chen, Paul C. Becker, Richard Belush
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Patent number: 5097980Abstract: A crate has a thin-walled body defining a cavity for receiving a plurality of containers and a base on which the containers can be supported. The crate also has a crate insert located wholly or substantially wholly in the cavity of the body. The insert provides a spacer arrangement suitably above the floor of the body for separating containers in the crate from one another in normal use. The crate insert has load-bearing pillars for forming part of a composite load bearing pillar construction with pillars of lower and higher crates of a substantially identical construction when the crate is located in a stack of crates. The insert may be secured to the crate body by locating formalities.Type: GrantFiled: September 11, 1991Date of Patent: March 24, 1992Assignee: Teknol Holdings, Inc.Inventor: Michael J. Warwick
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Patent number: 4773554Abstract: A bottle crate has an upper part which is upwardly open and a lower part receivable in an upper part of an identical subjacent crate and having a single, lower-most, relatively-smooth floor. Separating posts extend upwardly from the floor to provide upwardly opening primary sockets in which lower portions of bottles are receivable. Each primary socket has a seat on which a lower part of a bottle received in the primary socket is supportable. The crate also has downwardly opening secondary sockets within which neck portions of bottles in a subjacent crate are receivable in use.Type: GrantFiled: December 7, 1987Date of Patent: September 27, 1988Assignee: Teknol Holdings, Inc.Inventor: Michael J. Warwick
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Patent number: 4467939Abstract: Security lids for stack/nest containers are frequently lost since they must be separated from such containers when the containers are in the nested condition. The present invention provides an open topped container 10 and a lid 26 with a transverse hinge 30. The lid includes means 36, 68, 70, 96, 102, for engagement on the container 24, 62, 80, 88, so that the lid cannot be removed without a combined pivoting of the lid parts about the hinge and sliding of the lid relative to the container. The folded lid can be stored in the container when another container is nested therein.Type: GrantFiled: October 26, 1982Date of Patent: August 28, 1984Assignee: WCB Plastics LimitedInventor: Michael J. Warwick
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Patent number: D289938Type: GrantFiled: December 21, 1984Date of Patent: May 19, 1987Assignee: Mega Plastic Industries (Proprietary) LimitedInventor: Michael J. Warwick
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Patent number: D304123Type: GrantFiled: January 21, 1986Date of Patent: October 17, 1989Assignee: South African Polymer Holdings (Proprietary), Limited)Inventor: Michael J. Warwick