Patents by Inventor James W. Moorman
James W. Moorman 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).
-
Publication number: 20010015182Abstract: A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft and crankshaft are rotatably supported, and the housing includes an integrally formed cylinder and head. A timing belt disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. Dry sump lubrication is obtained by an external oil reservoir connected to a pump which supplies pressurized oil to the bearing journals of the camshaft. A portion of the oil at the camshaft bearing journals flows through passages provided within the cylinder to lubricate the bearing journals of the crankshaft.Type: ApplicationFiled: December 18, 2000Publication date: August 23, 2001Applicant: Tecumseh Products CompanyInventors: James W. Moorman, Erik J. Christiansen, Roberto Molina, Gar M. Adams
-
Patent number: 6223713Abstract: A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft and crankshaft are rotatably supported, and the housing includes an integrally formed cylinder and head. A timing belt disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. Dry sump lubrication is obtained by an external oil reservoir connected to a pump which supplies pressurized oil to the bearing journals of the camshaft. A portion of the oil at the camshaft bearing journals flows through passages provided within the cylinder to lubricate the bearing journals of the crankshaft.Type: GrantFiled: January 31, 2000Date of Patent: May 1, 2001Assignee: Tecumseh Products CompanyInventors: James W. Moorman, Erik J. Christiansen, Roberto Molina, Gar M. Adams
-
Patent number: 6032635Abstract: A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft and crankshaft are rotatably supported, and the housing includes an integrally formed cylinder and head. A timing belt disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. Dry sump lubrication is obtained by an external oil reservoir connected to a pump which supplies pressurized oil to the bearing journals of the camshaft. A portion of the oil at the camshaft bearing journals flows through passages provided within the cylinder to lubricate the bearing journals of the crankshaft.Type: GrantFiled: April 2, 1999Date of Patent: March 7, 2000Assignee: Tecumseh Products CompanyInventors: James W. Moorman, Erik J. Christiansen, Roberto Molina, Gar M. Adams
-
Patent number: 5988135Abstract: A single cylinder, internal combustion engine with an engine housing in which the overhead camshaft and crankshaft are rotatably supported. The housing includes an integrally formed cylinder and head. A timing belt disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. The inventive engine further provides for the mounting of flywheels within the crankcase cavity in conjunction with an external, lightweight fan for engine housing cooling, as well as employs a cast in valve seat for the overhead valve assemblies.Type: GrantFiled: March 24, 1998Date of Patent: November 23, 1999Assignee: Tecumseh Products CompanyInventors: James W. Moorman, Erik J. Christiansen, Roberto Molina, Gar M. Adams
-
Patent number: 5979392Abstract: A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft and crankshaft are rotatably supported, and the housing includes an integrally formed cylinder and head. A timing belt disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. Dry sump lubrication is obtained by an external oil reservoir connected to a pump which supplies pressurized oil to the bearing journals of the camshaft. A portion of the oil at the camshaft bearing journals flows through passages provided within the cylinder to lubricate the bearing journals of the crankshaft.Type: GrantFiled: March 24, 1998Date of Patent: November 9, 1999Assignee: Tecumseh Products CompanyInventors: James W. Moorman, Erik J. Christiansen, Roberto Molina, Gar M. Adams
-
Patent number: 5755194Abstract: A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft and crankshaft are rotatably supported, and the housing includes an integrally formed cylinder and head. A timing belt disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. Dry sump lubrication is obtained by an external oil reservoir connected to a pump which supplies pressurized oil to the bearing journals of the camshaft. A portion of the oil at the camshaft bearing journals flows through passages provided within the cylinder to lubricate the bearing journals of the crankshaft.Type: GrantFiled: July 1, 1996Date of Patent: May 26, 1998Assignee: Tecumseh Products CompanyInventors: James W. Moorman, Erik J. Christiansen, Roberto Molina, Gar M. Adams
-
Patent number: 3992878Abstract: An engine has an air injection system injecting air into the exhaust system to reduce emissions. The injection is scheduled by a bypass valve that normally permits injection, but bypasses or dumps the air as a function of a carburetor ported vacuum signal that is also used to control exhaust gas recirculation. A control is provided to maintain air injection for a short period during certain engine idle conditions, but dumping of the air after this period. An engine deceleration override is provided to dump the air when this condition exists, to prevent backfire. A cold engine vacuum lock-out also is provided.Type: GrantFiled: October 3, 1975Date of Patent: November 23, 1976Assignee: Ford Motor CompanyInventor: James W. Moorman