Class 184/45.1 - Spring-operated

Subclass of Class 184 - Lubrication
Definition: The piston-follower is actuated by a spring to force the
No. of patents: 37
Last issue date: 06/12/2007

Number	Title	Issue Date
7228941	Metering device for lubricant The invention relates to a metering device for lubricant having a lubricant reservoir (1), a piston (3), which is arranged on a threaded spindle (2), within the lubricant reservoir and a drive head 4, which has a drive shaft (7) co...	06/12/2007
7152712	Control moment gyro spin bearing lubricant delivery system and method A lubrication medium supply system and method for delivering lubricant to, for example, the spin bearings of a control moment gyro (CMG), includes a reservoir, a motor, and a valve. A lubrication medium is placed within the reservoir, and the motor, which is coupled...	12/26/2006
7052398	Pressure regulator assembly for use with a slip joint in a driveshaft assembly A slip joint includes a structure that prevents a negative pressure situation from occurring within a sealed lubricant chamber during operation thereof. The slip joint includes a male splined member having a plurality of external splines formed thereon that cooperat...	05/30/2006
6994473	Grease replenishing device A grease replenishing device replenishes a grease-lubricated rolling bearing with a grease. The grease replenishing device has a storage chamber portion and a pressing member. The storage chamber portion stores the grease. The pressing member pushes the grease out o...	02/07/2006
6802394	Lubricating device A self-contained automatic lubricator for automatically dispensing fluent lubricant over a period of time is provided. The lubricator comprises a cylinder having a front wall with a discharge outlet, a rear wall and cylindrical side walls. A piston is movable within...	10/12/2004
6408985	Motor driven lubricator A lubricating apparatus comprising a chamber to receive lubricant, an outlet for lubricant, a movable member to drive lubricant from the chamber through the outlet, and a control circuit for periodically activating the motor to dispense lubricant accordin...	06/25/2002
6260664	Press lubrication system modification A new and improved grease shunt valve and lubrication system for a printing press or the like is achieved by the adding of vent drains and/or seals to prevent the accumulation of a waxy-like residue from the grease that interfered with operation of a retu...	07/17/2001
6199662	Bearing protector device A bearing protector device comprising: a tube embodying a flange, a relief cavity and a ledge within its internal wall, a cupped piston and a spring, and wherein the assembly is retained inside the tube by the flange at one end and the ledge requires no o...	03/13/2001
5836421	Lubricating system for internal combustion engines A lubricating system for an internal combustion engine maintains lubrication even in extreme emergency positions of the engine such as slants within the range of about 90° to about 270°, relative to the horizontal and even for upside down engine positio...	11/17/1998
5598902	Automatic lubricator An automatic lubricator which includes a cylindrical oil container, a piston reciprocated in the oil container, a container holder covered on the bottom open end of the oil container and having an oil inlet and an oil outlet, two reversed coil springs con...	02/04/1997
5584359	Detachable wheel bearing lubricator A detectable wheel bearing lubricator for lubricating bearings in a wheel hub that includes an adapter for securely coupling to a wheel hub at one end and a lubrication assembly that is releasably coupled to the other end of the adapter thereby facilitati...	12/17/1996
5551530	Pressure reducing cap for a liquid lubricant-filled wheel hub A hub-spindle assembly is provided having a spindle and a hub with forward and rearward apertures and an axial passageway extending therebetween. The spindle is received through the rearward aperture into the axial passageway and a wheel bearing is conven...	09/03/1996
5449050	Lubricant container A lubricant container (1) for lubricating apparatus intended to be interconnected with and to cooperate with a valve adapted to govern an advance feed motion of a discharge device (3,4) present in the container, and where the lubricant container (1) is eq...	09/12/1995
5305854	Stuffing box lubricator Apparatus for lubricating pistons having a pressure metered lubrication reservoir in fluid flow attachment with the piston through a lantern port in the wall of the stuffing box surrounding the piston. A check valve in fluid flow alignment between the stu...	04/26/1994
5303800	Closed lubrication system for wheel hub bearings A lubricator for the bearings of a wheel hub that includes a bellows for accommodating changes in pressure in the wheel hub and utilizes a nongrease lubricant. Methods of manufacturing the lubricator and of lubricating wheel bearings are also provided....	04/19/1994
5259481	Central-lubrication assembly A central-lubrication assembly, instead of a refillable lubricant reservoir there are two lubricant cartridges (8, 9) which are equipped with follow-up pistons (17, 18) and one of which serves for feeding a lubricant pump (3), while the other is designed ...	11/09/1993
5178233	Continuous lubrication method and apparatus A method and apparatus for applying continuous uniform pressure to lubricant within a lubricant reservoir are disclosed. Memory retentive material, when inserted within a lubricant reservoir, compresses when initially subjected to lubricant pressure and l...	01/12/1993
5163534	Lubricating apparatus An apparatus for lubricating a slow cycle stroke mechanism, such as that found in a wing flap of an aircraft. The lubricating apparatus moves in conjunction with the wing flap and replenishes lubricant to a ball screw actuator driving the wing flap. The a...	11/17/1992
5147014	Lubricating system for an engine prior to start-up A pre-start lubricating system for reducing wear in internal combustion engines delivers lubricating oil into an engine oiling system at a pressure greater than the engine's normal operating oil pressure before the engine is cranked. The pre-start lubrica...	09/15/1992
5054859	Grease pressurizing hubcap for a wheel hub A grease pressurizing hubcap for a wheel hub including a barrel press fit in the hub. A plastic piston disposed in the barrel and movable between inner and outer annular abutments in the barrel, the outer abutment being formed by an inward turned, reverse...	10/08/1991
4941550	Bearing lubricating device A bearing lubricating device which is designed for attachment to the wheel bearing housing of a trailer or other vehicle to automatically lubricate the bearings in the bearing housing. The bearing lubricating device includes a cylindrical grease housing f...	07/17/1990
4921071	Marine stern drive with improved fluid inspection reservoir A transparent container (20, 48) is mounted to the inner transom wall (2) of a boat (3) and is connected to the oil passages in a stern drive unit (1). The container is provided with a removable cap (25) having a one-way valve (27) of the Vernay type ther...	05/01/1990
4886144	Lubricating apparatus for bearings An apparatus for automatic lubrication of bearings which apparatus incorporates a feeding device (2, 3) for grease and a valve member (7) intended to be connected to a bearing housing. In the valve member (4) is provided at a heat activated member (5) for...	12/12/1989
4836334	Lubricating device A device for supplying a lubricant to a mechanism, in particular a rolling bearing, comprising a container for holding a quantity of lubricant which at its lower edge is provided with a discharge channel for the lubricant and wherein a spring-loaded pisto...	06/06/1989
4787827	Portable lubricating apparatus A portable lubricating apparatus is illustrated which utilizes an upright removable and replaceable container of grease for delivery through a hose and nozzle carried on a wheeled chassis wherein a frame is carried adjacent one end of the wheeled chassis ...	11/29/1988
4758100	Automatic lubricant metering apparatus An automatic lubricant metering device consists essentially of a housing (4), from inside of which a piston (5) is conveying a lubricant (15) through a feeder line (12) to the lubricating location (2) of a revolving shaft (1). The automatic feature consis...	07/19/1988
4496030	Automatic lubrication assembly An automatic lubrication assembly that dispenses grease under pressure to machinery which requires frequent lubrication, including a spring biased one-piece rigid plastic molded plunger that has a flexible thin walled sealing lip eliminating the requireme...	01/29/1985
4477235	Submerged motor-pump unit A motor-pump unit for submerging down a well, e.g. an oil well, comprises a motor portion driving a pump portion. The motor portion is filled with fluid to prevent ingress of the surrounding medium which the pump portion pumps. The fluid is maintained at ...	10/16/1984
4375246	Grease lubricating assembly There is disclosed an improved grease lubricating assembly comprised of a lubricating cup positioned within a housing and having a spring-loaded piston assembly formed with a lubricating cup contact assembly which abuts the inner side walls of the lubrica...	03/01/1983
4190133	Wheel bearing pressure lubricator A wheel bearing pressure lubricator comprising a hollow body having an open end connected with a wheel hub and forming a closure cap therefor, a piston sealingly and slidably mounted in the body and a spring member urging the piston toward the hub and bea...	02/26/1980
4137999	Self-lubricating gear-type spindle coupling A self-lubricating gear-type spindle coupling for use with rotating equipment such as rolling mills, where lubrication is critical. The self-lubricating coupling includes reservoirs connected by first valve means to plenums formed by the retraction of the...	02/06/1979
4113061	Automatic lubricator This automatic lubricator is an adaption of sound hydraulic principle, that is the application of lubricant over a sustained time period by pressure in the lubricant. The novel feature is that the design permits readily available pressure from a service g...	09/12/1978
4106816	Hub cap for trailer wheels and the like A hub cap for a vehicle wheel, such as a boat trailer, which hub cap retains grease and blocks water flow into the wheel bearing while providing for automatic expulsion of excess grease when pressure increases within the hub, such as is caused by heating ...	08/15/1978
4058185	Automatic wheel bearing lubricator An automatic lubricator for wheel bearings and closure cap for wheel hubs comprises a hollow body having an open end connected with the hub, a piston sealingly and slidably mounted in the body, and a spring member urging the piston toward the bearing and ...	11/15/1977
4018305	Lubricant metering assembly A lubricant metering assembly is disclosed comprised of a lubricant cup positioned within a housing and having a spring-loaded piston assembly including a stem which is caused to move within a cylindrically-shaped passageway including a stem guide formed ...	04/19/1977
3955852	Trailer hub cap device The hub cap device includes a cylindrical housing mountable on the trailer wheel hub and having a spring loaded piston that is movable between defined inner and outer positions. As the hub is filled with grease under pressure through a grease fitting on t...	05/11/1976
3942596	Lubricant pressure relief valve for earth penetrating tools Disclosed herein for use with earth penetrating tools is an improved lubricant pressure relief system that utilizes a housing adapted for retention within a lubricant containing passage. An interior surface or opening of the housing is exposed to the lubr...	03/09/1976

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Class 184/45.1 - Spring-operated