Abstract: A method of controlling at least one lubrication apparatus involves: determining whether vibration associated with the at least one lubrication apparatus satisfies one of a plurality of different criteria; and controlling the at least one lubrication apparatus according to whether the vibration associated with the at least one lubrication apparatus satisfies the one of the plurality of different criteria.

Abstract: A rotary oscillating sub-assembly for positive displacement pumping of a fluid, said sub-assembly comprising: a hollow body defining a cavity having a wall with two ducts passing therethrough; a piston co-operating with said cavity to define a working chamber and including a channel that opens out longitudinally into said working chamber, said piston being movable angularly so as to put said working chamber into fluid-flow communication with one, then none, then the other of said ducts, and being movable in longitudinal translation to reciprocate so as to cause the volume of said working chamber to vary and successively suck in and then discharge said fluid, said piston carrying a sealing gasket that is formed of at least a sealing ring, a sealing half-ring, and at least one sealing strip that longitudinally connects said sealing ring to said sealing half-ring.

Abstract: The invention relates to a control device for lubrication systems, having a control processor which is arranged in a housing, having connections, which are formed on the housing, for sensor inputs and control outputs, which are connected to the control processor, and having an operator interface which is secured to the outside of the housing and is intended to input control parameters. Provision is made for the control processor to be set up with different control programs for different lubrication systems and for program switches for selecting the different control programs to be arranged inside the housing.

Abstract: A gravity controlled lubrication system for aircraft engines to supply a lubricant from a tank to a circulating system permitting lubricant to flow when the aircraft changes to an inverted flight condition.

Abstract: A device for supplying several lubrication points on machine parts with a lubricant, comprising an electromechanical lubrication dispenser and a distribution device coupled to a lubricant outlet of the dispenser. The distribution device has a housing, a cylindrical hollow distributor body or tube which is mounted to rotate about a vertical axis. There is also a fixed cylindrical sleeve that surrounds the distributor body, forming a seal. The distributor body has an opening at the top for allowing the lubricant in, and has at least two distributor bores disposed on the circumference but offset axially from one another. Each of these distributor bores has a corresponding opening bore in the distributor sleeve that is assigned to it. This distribution device also has an electric motor drive that has a running path control that has a switch that functions electromechanically or in a contact free manner.

Abstract: An apparatus for delivering metered amounts of a first fluid, such as a lubricating oil, to a remote location comprises a metering plate coupled to a drive for moving the metering plate between a first position in which a fluid receptacle in the metering head is filled with the fluid and a second position in which the filled receptacle is placed between first and second ports for transfer of the fluid into and through a delivery line. The first port provides a source of a carrier fluid to drive the first fluid, while the second port is coupled to a delivery line to the remote location. The first and second ports form a portion of a manifold assembly, which in conjunction with the metering plate comprise a metering head. The metering head may be submerged in a reservoir of the first fluid such that, in the first position, a receptacle is directly exposed to the reservoir whereby the receptacle is filled with a first fluid without the need for pumps or pressurization of the reservoir.

Abstract: In a portable engine using a fuel gas within a cassette type gas bomb or canister, an engine body is provided with a lubricating oil supply for supplying a lubricating oil from an air intake port side. The supply means has a fixed quantity discharging type lubricating oil pump housed in a separation chamber between a side wall of a crankcase of the body. A recoil starter is disposed beside the side wall and a plunger is directly driven by a crank shaft. A discharge piping system has a throttle tube for controlling a flow amount and communicates between an air intake tube connected to the air intake port and a discharge port of the pump. Furthermore, there is a lubricating oil tank, a suction piping system communicating between the tank and the suction port of the pump, and a return piping system communicating the discharge side of the pump and the tank.

Abstract: A lubricating system for a machine such as a two-cycle internal combustion engine including a reciprocating pump that pumps a finite amount of lubricant during a single pumping stroke and a stepper motor for operating the pump through incremental phases of movement each less than a stroke. The lubricant requirements of the machine are determined and the driving increments are adjusted so as to provide a pumping stroke when the lubricant consumption of the machine reaches the output of the pump. Various arrangements of stepper motors and control arrangements are disclosed for controlling the amount and timing of the lubricate delivery.

Abstract: A number of embodiments of lubricating systems for small watercraft that might become inverted and wherein a lubricant reservoir supplies lubricant under gravity to a lubricant pump when the water pump is operating in a normal upright condition. An air return line extends from the lubricant pump back to the reservoir to pump air which may enter the lubricant pump back to the reservoir. Arrangements are provided for insuring that air cannot flow from the lubricant reservoir to the lubricant pump through the supply line when the watercraft is inverted and also for precluding lubricant pressure in the air return line from acting to force air back to the lubricant pump when the watercraft is inverted.

Abstract: An oil pump device for a chain saw comprises a drive unit having a drive shaft and a gear fixed to the drive shaft and meshing with a worm gear fixed to a power output shaft of an engine. The oil pump device also comprises a pump unit having a pump casing and a plunger rotatably and axially reciprocatably received in the pump casing and drivingly connected to the drive shaft. The drive unit and the pump unit being formed as separate components and are drivingly connected to each other through a slide joint which permits the plunger to axially displace relative to the drive shaft.

Abstract: The invention is directed to a motor-driven apparatus such as a motor-driven chain saw and the like having a lubricating oil pump having a piston which rotates about its central axis and an oil supply for a work tool. There is also a control means containing a rotating piston having cam member on the piston interacting with a control pin member which acts as a cam follower. There is provided means for adjusting the percentage of contact made between the cam member and the cam follower per revolution of the pumping member.

Abstract: A mechanical lubricating oil pump (126) includes a pump body (140) having a cylindrical chamber (142) and a reservoir (150) with an oil supply input (196) supplying oil from an oil tank (114) to the reservoir. A cylindrical rotator (144) is driven by a gear (162) and has a bore (146) receiving a piston (152) axially reciprocal therein and has a radial opening (148) in a cylindrical sidewall thereof communicating with the bore (146). The pump body (140) has an oil and air purge input first passage (168) communicating between the top of the reservoir (150) and the radial opening (148) in the rotator (144) during a first stroke at a first position of the rotator (144) during its revolution. The pump body (140) has an oil and air purge output second passage (180) communicating between a purge outlet (182) and the radial opening (148) in the rotator (144) during a second stroke at a second position of the rotator (144).

Abstract: The invention is directed to a motor-driven apparatus such as a motor-driven chain saw and the like having a lubricating-oil pump and an oil supply for a work tool and to apparatus for varying the reciprocatory stroke distance of the oil piston or pumping member to thereby provide selective regulation of oil flow from full flow to through no flow in response to the stroke distance of the pumping member.

Abstract: An oil regulating pump for supplying oil to an engine, comprises: a pump housing provided with a suction route and a discharge route; a driving shaft inserted into said housing and rotated by the engine; a primary plunger rotated by the driving shaft; a secondary plunger inserted into a hole provided in an end of the primary plunger and formed a pump chamber communicable with the suction route and the discharge route for pumping; a motor provided with a mechanism for converting a rotation movement into a linear movement; a cam shaft abutted on an end of said driving shaft and linearly displaced by said motor, to reciprocate the driving shaft and to change a reciprocation stroke of the driving shaft; and a control device for controlling rotation of the motor.

Abstract: Instead of a hand-operated oil pump for supplying extra oil to the chain of a motor saw, two pumps according to the invention are disposed on the same shaft. The first one works always, while the second one can be switched on and off. The switching is effected by choking the feed of oil partly or completely to the second one. Both the pumps are controllable by decreasing the piston stroke.

Abstract: A plunger pump has a plunger adapted to slide in the axial direction and rotate by a combination of worm and worm wheel. A cylindrical pump body has an axial extension at one free end through which a control pin extends upwardly at a right angle relative to the extension, while the plunger carried on the pump in a cantilever fashion has an inclined end face cam, an adjustment cam and a worm wheel on the same side as the axial extension. The worm wheel meshes with a worm directly connected to a crankshaft of an engine and the crankshaft is not held on the pump body. As the crankshaft is rotated, the plunger is caused to rotate by meshing engagement of the worm and the worm wheel and at the same time slide in the pump body by contact of the end face cam with the control pin whereby liquid held in the pump chamber is discharged from the delivery port.

Abstract: An oil pump for use in a chain saw in which the pumping plunger is constituted by a needle roller and in which gear cam portions which are formed separately from the needle roller are fitted and connected to the needle roller.

Abstract: The invention is directed to a motor-driven chain saw wherein a sprocket for a saw chain and a drive wheel for an oil pump are rotatably journalled on the crankshaft. The oil pump pumps oil for lubricating the saw chain and guide bar. The sprocket and the drive wheel are driven via a clutch drum. In this arrangement, a detachable resilient connecting member is provided to connect the drive wheel of the oil pump to the clutch drum at the peripheral wall of the latter. The resilient connecting member protects the drive wheel and the oil pump from excessive wear.

Abstract: A lubricating-oil pump is disclosed for a motor-driven apparatus such as a chain saw. The lubricating-oil pump delivers lubricating oil to a tool. The supply of lubricating oil from the oil pump to the tool can be interrupted. For example, in this way the flow of oil can be stopped when an accessory tool or the like is mounted on the motor-driven apparatus which requires no lubricating oil during operating.

Abstract: A lubricating oil pump comprising a distributor rotatably fitted in a cylinder chamber of a pump body, a plunger fitted to said distributor for the purpose of forming a pump chamber between said distributor and said plunger, said plunger being rotatable integrally with said distributor in rotational direction but being capable of performing relative movement in thrust direction in respect to said distributor, a cam and protuberance formed on one end face of said plunger, and a cam shaft comprising a cylindrical guide-column portion and control cam portion respectively engageable with said cam and protuberance for the purpose of controlling the stroke of said plunger, said lubricating oil pump thereby making it possible to manufacture at a low cost, being capable of maintaining high pumping efficiency and making it possible to control the delivery.

Abstract: A lubricating oil pump comprising a plunger slidably and rotatably fitted in a cylinder chamber and having a worm wheel at one end and a lead portion at the other end thereof and arranged to form a pump chamber by means of a part of said cylinder chamber and said lead portion, said lubricating oil pump thereby providing comparatively large delivery in spite of the fact it can be manufactured at a low cost and is small in size.The lubricating oil pump further comprises an annular groove formed at a middle portion of the plunger and an eccentric cam, which is operable from outside, projecting into said annular groove and displaceable in thrust direction of the plunger so that the plunger stroke can be varied.

Abstract: A lubricant proportioning pump having a delivery piston controling the pumping operation, rotatable about its longitudinal axis by way of a step-down transmission and movable to and fro in lengthwise direction by means of a cam track held against a fixed guide by spring action, while an adjustable stop cooperates with the piston and limits its stroke, the adjustable stop having an expansion element arranged therein for varying the stroke of the piston as a function of temperature.

Abstract: A lubricating oil pump which is responsive to the engine load to supply an associated internal combustion engine with an optimum quantity of lubricating oil. The lubricating oil pump determines the oil outlet frequency depending on the engine speed and determines the supply quantity of oil depending on the variation in the engine pressure.