300results about How to "Prevent oil leakage" patented technology

A shaft seal assembly is disclosed having a stator including a main body and axial and radial projections therefrom. The rotor is radially extended and encompasses the axial and radial projections from said stator. A passageway formed between the radial projection of stator and rotor results in an axial passageway having its opening facing rearwardly from the rotor and away from the source of impinging coolant and / or contaminant. A concentric circumferential receptor groove in the stator facing the housing allows insertion of conductive means for transmission of electrostatic charge away from the shaft through the shaft seal assembly to the housing and ground. The receptor groove is opposite the axial passageway and provides for both a substantially lower contaminant environment and improved engagement with conductive means. The dimension of interface gap between the rotor and the radial projection from the stator, which the access to the shaft of any impinging material is fixed at a predetermined value and does not vary with the relative movement between the rotor and the stator. The shaft seal assembly provides improved rejection or warding off of contaminants from ingress into the labyrinths and ultimately restrains attack of the bearing environment as well as substantial elimination of bearing current and attendant bearing fluting or frosting.

A seal arrangement for sealing a bearing comprising a first component and a second component which are rotatably movable with respect to each other is provided. The seal arrangement includes brush seal having an annular brush body carried by the first component and a bundle of resiliently bendable bristles. The brush seal is adapted to maintain a sealing condition when the first and second component are moved relative to each other in a non-rotational manner. Further, a brush seal and a wind turbine having a brush seal are provided.

A hinge has a stationary bracket having multiple limiting slots, two resilient spacers, a pintle having a bar and an enlarged head, a stop element mounted in the pintle between the enlarged head and the resilient spacers and having multiple limiting tabs corresponding to and mounted in the limiting slots in the stationary bracket to make the limiting tab and the pintle to seal the opening and a keyhole provided the pintle to mount in and having an inner diameter being not bigger than an outer diameter of the bar to provide a tightness between the keyhole and the pintle. So the pintle is sturdy in the sleeve and the oil would not leak out of the sleeve.

A segmented labyrinth seal (10) having a windback configuration formed around a rotatable shaft for preventing leakage of oil from a bearing housing having a first face (22) and a second face (23). An exterior cylindrical surface (19) and an interior cylindrical surface (18) extend between the first face (22) and the second face (23). A thread pattern (40) provided on the interior cylindrical surface (18) providing the windback configuration, and configured in a right-hand direction or a left-hand direction. A plurality of profiled teeth (41) form the thread pattern (40) and have first sides (43), second sides (44), and connecting sides (45) extending between the first sides (43) and the second sides (44). Leading edges (47) are formed where the first sides (43) join the connecting sides (45), and trailing edges (48) are formed where the second sides (44) join the connecting sides (45). The first sides (43) and the second sides (44) are slanted toward the first face (22). A pressure drop is taken over the plurality of profiled teeth (41). A channel (C) tracing the thread pattern (40) is formed between the first sides (43) and the second sides (44) of adjacent teeth of the plurality of profiled teeth (41), the channel being adapted to capture the oil from the bearing housing, and returning the oil to the bearing housing without the need for axial drain holes.

The assembly includes rotor and stator elements each having an inclined plane or surface juxtaposed to each other. This is a metallic assembly and the rotor and stator also have juxtaposed cavities. The stator cavity being of sufficient size to accommodate a sealing member. The inclined surfaces are flexed with the inclined plane or surface of the rotor forced over the inclined plane or surface of the stator to lock the rotor and stator together with the sealing member enclosed between the rotor and stator. The sealing member does not rotate with the stator. The seal contains at least one labyrinth formed with the rotor and stator, are adjacent each other and lock together.

To provide an internal combustion engine of a vertical shaft type, in which leakage of an oil from a crankcase and an oil pan is effectively prevented, which has high mounting rigidity relative to a working machine and, also, which is capable of being easily serviced, the combustion engine includes a vertically extending crankshaft (9) having a pair of upper and lower crank webs (14A and 14B), a crankcase (1) accommodating the crankshaft (9) and including an oil pan (2), and a crankcase cover (3) mounted on an upper surface (1a) of the crankcase (1) to cover the crankcase (1). The upper surface (1a) of the crankcase (1) is positioned above the upper crank web (14A).

To provide an internal combustion engine of a vertical shaft type, in which leakage of an oil from a crankcase and an oil pan is effectively prevented, which has high mounting rigidity relative to a working machine and, also, which is capable of being easily serviced, the combustion engine includes a vertically extending crankshaft (9) having a pair of upper and lower crank webs (14A and 14B), a crankcase (1) accommodating the crankshaft (9) and including an oil pan (2), and a crankcase cover (3) mounted on an upper surface (1a) of the crankcase (1) to cover the crankcase (1). The upper surface (1a) of the crankcase (1) is positioned above the upper crank web (14A).

Landing gear for selectively supporting a semitrailer and a method of assembly of the landing gear is provided. The landing gear includes a leg having an upper section and a lower section telescopingly received in the upper section. A lead screw extends and retracts the upper and lower sections relative to each other upon rotation thereof. An input shaft applies a torque to the lead screw to drive rotation thereof, the input shaft being rotatable about a rotation axis and movable in translation along the rotation axis for shifting between a first position for low gear operation and a second position for high gear operation. An output shaft, axially aligned with the input shaft, has an output gear for transmitting torque to the lead screw. A gearing subassembly is received in the upper leg section and is configured to augment lift when the input shaft is in the first position and augment speed in the second position.

Oil sump seal pressurization apparatus for turbine engines are disclosed. An example oil sump seal pressurization apparatus may include a non-rotating oil sump housing a bearing; an oil seal isolating an interior of the oil sump; a passage arranged to supply pressurization air to an outward side of the oil seal; a drain arranged to allow draining of oil and venting of at least some of the pressurization air, the drain being positioned axially between the passage and the oil seal; a wide discourager tooth disposed on the shaft and extending radially outward towards a non-rotating land, which may be disposed axially between the passage and the drain, the wide discourager tooth being spaced apart from the land in a radial direction by a gap, the wide discourager tooth including an upper surface; and / or an adjacent tooth disposed on the shaft and extending radially outward from the shaft.

The current diverter rings and bearing isolators serve to dissipate an electrical charge from a rotating piece of equipment to ground, such as from a motor shaft to a motor housing. One embodiment of the current diverter ring includes an inner body and an outer body configured to clamp at least one conductive segment between them. In the preferred embodiments of the current diverter ring, the conductive segments are positioned in radial channels. The outer body may be affixed to a shaft, a motor housing, a bearing isolator, or other structure. The bearing isolator may incorporate a retention chamber for holding conductive segments within the stator of the bearing isolator, or the bearing isolator may be fashioned with a receptor groove into which a current diverter ring may be mounted.

An oil supply unit provided in a rolling bearing apparatus has a lubricating oil discharge nozzle in which an opening is faced to a cage portion of the rolling bearing. An opening direction of the nozzle is inclined to a rotating direction with respect to a direction of a center axis of rotation.