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Class Information
Number: 184/103.1
Name: Lubrication > Lubricators > Constant level
Description: Device having a lubricant distributing-reservoir and means to automatically maintain a constant level of lubricant therein.










Sub-classes under this class:

Class Number Class Name Patents
184/103.2 Float-controlled 27


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8668052 Constant level oiler level adjustment tool Mar. 11, 2014
8448750 Lubrication system level control May. 28, 2013
8376088 Twin lubrication tank filling system Feb. 19, 2013
7954599 Gear mechanism with controlled device for generating a rarefied atmosphere Jun. 7, 2011
7668221 Gas laser apparatus, and method and device for monitoring blower Feb. 23, 2010
7325653 Thermally compensated standpipe assembly for automatic transmission oil fill Feb. 5, 2008
6928976 Apparatus for controlling a lubrication fluid level Aug. 16, 2005
6886664 Automotive fluid exchange system May. 3, 2005
6863156 Gearbox housing element and method for acting upon the oil level of a gearbox Mar. 8, 2005
6845847 Lubrication system and its modification method Jan. 25, 2005
6793042 Dual independent tank and oil system with single port filling Sep. 21, 2004
6533562 Two-stage oil injection into scroll compressors Mar. 18, 2003
6186666 Ring spindle and process for lubricating same Feb. 13, 2001
6125642 Oil level control system Oct. 3, 2000
5788013 Automatic horizontal replenishing device for liquid oil and the like Aug. 4, 1998
5688109 Oil-level controller for compressor Nov. 18, 1997
5562123 Overfill prevention valve Oct. 8, 1996
5400889 Clutch assembly with automatic oil level control system Mar. 28, 1995
5332064 Control apparatus for lubrication pump Jul. 26, 1994
5289898 Method and apparatus for maintaining lubricant in an internal combustion engine Mar. 1, 1994
5238085 Engine oil makeup and extended operation oil exchange system Aug. 24, 1993
5193646 Centralized lubrication apparatus Mar. 16, 1993
5159313 Oil supply system in an internal combustion engine for a vehicle Oct. 27, 1992
5101936 Vaccum operated dry sump system Apr. 7, 1992
5078233 Oil supply system for machines such as internal combustion engines Jan. 7, 1992
5056622 Oil level regulator Oct. 15, 1991
4989560 Automotive engine oil level surveillance system Feb. 5, 1991
4976235 Apparatus and method to control extraction of lubricating oil Dec. 11, 1990
4921071 Marine stern drive with improved fluid inspection reservoir May. 1, 1990
4913108 Separate lubricating system of engines Apr. 3, 1990
4895498 Crank case chamber Jan. 23, 1990
4895219 Fill valve for liquid containing device Jan. 23, 1990
4895222 Constant level oiler Jan. 23, 1990
4883148 Fill valve for liquid containing device Nov. 28, 1989
4869346 Automatic crankcase oil change and makeup system Sep. 26, 1989
4822259 System of compressing miscible fluids Apr. 18, 1989
4793440 Liquid lubricant sump level management system Dec. 27, 1988
4741304 Electronic engine oil dispenser May. 3, 1988
4724926 Oil dispenser for internal combustion engines Feb. 16, 1988
RE32593 Separate lubricating system for marine propulsion device Feb. 9, 1988
4632080 Oil addition apparatus Dec. 30, 1986
4603666 Device for maintaining a constant oil level Aug. 5, 1986
4589524 Overfill valve May. 20, 1986
4572120 Separate lubricating system for marine propulsion device Feb. 25, 1986
4564500 Oil pot for reactor coolant pump motor and apparatus for controlling the oil level therein Jan. 14, 1986
4563988 Apparatus for determining the filling quantity of lubricating oils in drive installations Jan. 14, 1986
4529061 Fluid level control system Jul. 16, 1985
4522167 Lubricating oil monitor Jun. 11, 1985
4495909 Oil cleaning and recycling system Jan. 29, 1985
4491103 Automatic engine oil level maintenance system Jan. 1, 1985

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