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Class 123/196R - LUBRICATORS


Subclass of Class 123 - Internal-combustion engines
Definition: Lubricating means for internal-combustion engines, the device
No. of patents: 1004
Last issue date: 04/17/2012


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NumberTitleIssue Date
6837210Lubrication unit for engines
An oil feed pump for feeding oil in an oil tank to an engine, an oil recovery pump for feeding oil in a crankcase into the oil tank, an oil drain pipe connected to the lower portion of the crankcase and extending upward, and an opening provided on top of the oil tan...
01/04/2005
6837209Internal combustion engine with torque converter
To enhance productivity and maintainability of an internal combustion engine for a vehicle with a torque converter. An internal combustion engine with a torque converter includes a single feed pump for supplying both a working oil for a torque converter and a lubric...
01/04/2005
6837207Inverted crankcase with attachments for an internal combustion engine
A crankcase, and method of assembling a crankcase, of an internal combustion engine are disclosed. The crankcase includes a top including at least a first portion of a top surface of the crankcase, and a bottom including a bottom surface of the crankcase and a plura...
01/04/2005
6830030Four-cycle engine
A four-cycle engine wherein a fuel-air-oil mixture is compressed in a crank case chamber and directed therefrom along a pathway to a combustion chamber. The pathway contains actuating mechanism for actuating the fuel intake valve leading to the combustion chamber. T...
12/14/2004
6823828Lubrication unit for internal combustion engine
A dry-sump lubrication unit for an internal combustion engine for a vehicle. A crankshaft of the vehicle is disposed so as to be parallel with the direction of travel of the vehicle, and in a position offset from a center of the vehicle when viewed from the front or...
11/30/2004
6823829Dry-sump lubrication type four-stroke cycle engine
A dry-sump lubrication type four-stroke cycle engine includes an oil feed pump for feeding oil by pressure to parts needing lubrication, and a scavenging pump for returning the oil lubricated the parts needing lubrication into an oil tank. The respective rotors of t...
11/30/2004
6820585Lubricating oil guide device for engine
Bearings and oil flow holes are formed on walls between cylinders of a cylinder block. Journals of a crank shaft are supported rotatably by the bearings and a bearing cap. The bearing cap has pairs of arms and a pair of beams which link the arms together. The arms f...
11/23/2004
6820584Oil pressure monitoring system for two-stroke engines
The present invention provides a system and method to adjust the quantity of oil delivered to the cylinders of an internal combustion engine of an outboard motor. The system includes an oiling system to distribute oil throughout the internal combustion engine. The o...
11/23/2004
6820583Internal combustion engine
An internal combustion engine includes a crankcase in which a crankshaft is held. An oil guide housing is positioned beneath the crankcase, and an oil pump with a drive sprocket for supplying lubricating oil is positioned in the crankcase. The oil pump supplies lubr...
11/23/2004
6810849Four-stroke internal combustion engine
A four-stroke internal combustion engine is provided that is capable of use in many power tools, including those power tools subjected to tippable applications. There is provided within an engine housing an oil reservoir and a valve chamber which independently commu...
11/02/2004
6810845Lubrication system using valves to meet various engine oil pressure requirements
A lubrication system for an internal combustion engine having valves to optimize oil flow through an engine to increase engine efficiency. The lubrication system includes an engine driven oil pump connected to supply pressurized oil through a main oil feed to a main...
11/02/2004
6807936Oil pressure control valve by sliding camshaft for an internal combustion engine
The invention pertains to an internal combustion engine with a crankcase, a crankshaft and a camshaft for controlling at least one intake and exhaust valve, as well as an oil pump for delivering lubricating oil to the crankshaft. Downstream on the outlet side of the...
10/26/2004
6802294Oil filter adaptor flange
A flange for an oil filter adaptor, the flange having a peripheral sealing portion adapted to be contacted by and seal with a correspondingly sized and shaped mounting flange of the oil filter adaptor; the peripheral sealing portion defining at least one inlet openi...
10/12/2004
6796283Oiling system for an internal combustion engine
An oiling system for an internal combustion engine includes a cover for enclosing lower portion of a cylinder block. The cover has an oil reservoir and oil inlet and an integral transfer tube having an outlet which is coupled directly to the inlet of the engine's oi...
09/28/2004
6792910Oil injection system
A cylinder block assembly for an internal combustion engine having a cylinder block and a plurality of cylinders includes an oil port in each of the cylinders. An annular groove is located in each cylinder wall so that oil flowing from the oil port flows into the an...
09/21/2004
6792911System and method for controlling the flow of oil in an engine
A system for controlling the flow of engine oil in a cylinder block that houses hydraulic lifters. The system includes a lifter gallery extending through the cylinder block, such that each of the hydraulic lifters are in fluid communication with the lifter gallery. ...
09/21/2004
6786188Dry-sump lubrication type four-stroke cycle engine
A dry-sump lubrication type four-stroke cycle engine having a crankcase provided with a crankshaft chamber in its front part and a transmission chamber in its rear part, a generator chamber on one side of the crankcase in an axial direction of the crankshaft, and a ...
09/07/2004
6786187Internal combustion engine
An internal combustion engine capable of optimizing the amount of oil in the crank chamber with a simplified structure of lubrication system, in which a U-shaped oil reservoir is formed surrounding and adjacent to a crank chamber. At least one small hole is formed o...
09/07/2004
6779505Method of employing instrumentation to efficiently modify a lubricant's flow rate or properties in an operating all-loss lubricating system
A method to employ instrumentation to effectuate variation in lubricant flow rate or properties in response to actual engine conditions. Preferably, the present invention provides a method for the in situ monitoring of the lubricating oil's effectiveness in a two-st...
08/24/2004
6776262Oil feeding device for vehicles
An oil feeding device for vehicles is disclosed. This oil feeding device is designed to draw oil from an oil pan through a plurality of suction branch pipes placed in depressions formed at the corners of the oil pan's bottom. Therefore, the oil feeding device reliab...
08/17/2004
6769391Four-stroke engine with an oil spray generating assembly for lubrication
A four-stroke internal combustion engine includes a crankcase with a bottom, an oil pan and an oil spray generating assembly. The oil spray generating assembly having a closed sidewall, a valve, a bottom cap and nozzles is attached to the bottom of the crankcase and...
08/03/2004
6763814Oil tank system for engine
An oil tank system for an engine capable of reducing the overall height of an engine is disclosed. Breather chambers of a dry sump type engine in which an oil tank for storing engine oil is provided independently from the engine are defined in an oil tank. The breat...
07/20/2004
6763797Engine oil system with variable displacement pump
A lubrication system for an internal combustion engine includes a variable displacement oil pump supported on the engine block and connected to draw oil from the oil pan and to supply pressurized oil to various engine components. The pump defines variable displaceme...
07/20/2004
6761142Oil pressure control for an outboard motor
An oil pressure control warning system for an outboard motor which uses timers dependent on various predetermined oil pressures to correctly determine actual harmful lubrication deficiencies and warn the operator of such lubrication deficiencies. The alarm warning c...
07/13/2004
6758187Method and apparatus to estimate oil aeration in an engine
The present invention is a method and apparatus to determine an amount of aeration of fluids such as engine oil, thus permitting more aggressive operation of an oil-driven actuator, with fewer limitations in scheduling operation of the actuator. It includes monitori...
07/06/2004
6758184Method and apparatus for reducing oscillatory camshaft torque in an internal combustion engine
A peristaltic piston pump driven by a dedicated pump cam disposed on a camshaft of an engine. A plurality of valve-opening cams are also disposed along the camshaft. The pump cam has a plurality of lobes equal in number to the number of valve cams and each pump lobe...
07/06/2004
6758183Joint structure for oil pump shaft and balancer shaft
A joint portion 33 of an oil pump shaft 19 and a balancer shaft (output-side balancer shaft 12) is provided in an open space between opposite surfaces of a sidewall 4b of an oil pump housing 4 and a sidewall 5c...
07/06/2004
6752117Balancer shaft assembly
A balancer shaft assembly for an engine comprises a housing mountable on the engine block, and rotatably supporting at least one balancer shaft (16,18; 16′,18′) connectable for rotation with the engine crankshaft. The housing is formed in two parts (12...
06/22/2004
6750763System and method for measuring oil condition in large engines
A system for measuring oil condition in large engines includes a bypass valve that is installed in a lubrication system along a fluid line between an oil pan and an engine. The bypass valve communicates with a measurement chamber and when energized by a control modu...
06/15/2004
6745741Cooling system for four-stroke cycle internal combustion engine
A cooling system for an OHC type four-stroke cycle internal combustion engine having a valve chamber lubricated by oil mist. The system includes an accommodating space accommodating a transmission mechanism, a blower fan rotatably driven by a crankshaft, and a cooli...
06/08/2004
6743063Dry sump engine for a small planing boat
A mounting face of an oil pan is provided in the vicinity of the outside of a fastening bolt for fastening un upper case and a lower case of an engine that support a crankshaft when viewed from the bottom. A strainer is provided in the vicinity of the engaging surfa...
06/01/2004
6742490Oil pickup tube assembly
An apparatus for and method of mounting a flange to an oil pickup tube uses a bracketed flange mounting (201, 203, and 205). The bracketed flange mounting includes a flange (203) with a flange extension (205) in connection with a bracket ...
06/01/2004
6742491Engine lubrication system
The present invention provides a lubrication system for small internal combustion engines. In a first aspect, a helical oil pump includes a helical insert which is disposed within a bore in the engine camshaft and is rotationally fixed with respect to the crankcase....
06/01/2004
6739291Piston cooling device for multicylinder engine
A piston cooling structure for a multicylinder engine having oil jets for ejecting oil toward pistons. The oil jets are mounted in each of a plurality of journal walls except one journal wall. The piston cooling structure is able to supply oil to a cylinder head in ...
05/25/2004
6739305Oil pump for internal combustion engine and method of operating the same
An oil pump for an internal combustion engine is provided with an intake port and a discharge port, each formed in a pump housing. The oil pump has a power pump serving as a first main pump and an electric pump serving as a second auxiliary pump, both of which may b...
05/25/2004
6732701Oil circuit for twin cam internal combustion engine
An internal combustion engine, and method of distributing lubricant within an internal combustion engine, are disclosed. The internal combustion engine includes a crankcase having a floor, a pump supported by the floor, and a camshaft. The pump includes an inlet and...
05/11/2004
6732700Oil pump unit for engine
An oil pump unit for an engine includes an improved construction. The pump unit includes a housing. A scavenge pump assembly is disposed in series with the feed pump assembly to be driven by the pump shaft. The feed and scavenge pump assemblies each defines end port...
05/11/2004
6725958Snowmobile
A snowmobile has an engine with a compact arrangement that includes a crankshaft, an output shaft, and an auxiliary shaft. The crankshaft extends along a first axis, the output shaft extends along a second axis, and the auxiliary shaft extends along a third axis. Tw...
04/27/2004
6725823Lubricating oil supply structure for internal combustion engine
To provide a lubricating oil supply structure for an internal combustion engine, which requires no lubricating oil passage to be defined in a crankshaft, is capable of ejecting lubricating oil to a lubrication object, is free of limitations on the layout of the gene...
04/27/2004
6722860Oil pump mounting structure
In mounting a crankshaft direct-driven oil pump to an engine, the oil pump is mounted to a cylinder block which supports a crankshaft, as well as an integral bearing cap in which bearing cap portions are connected to each other by beam portions. ...
04/20/2004
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