Abstract: A tilting bearing pad for use in a turbine engine in accordance with the present invention includes an opening extending between opposing inner and outer surfaces of the pad and a profiled area extending from the opening. More specifically, the opening comprises a feed hole which extends from the outer surface toward the inner surface of the pad and is connected to an axial feed groove which extends to and along the inner surface. The profiled area extends from one side of the axial feed groove towards the trailing edge of the bearing pad along the inner surface. The side of the profiled area facing the trailing edge of the pad may be squared or tapered. The side of the axial feed groove facing the leading edge remains substantially flush with the groove and does not extend towards the leading edge. A turbine engine with the tilting bearing pad as described above also includes two bearing cases, a rotor, and a fluid supply system. The bearing cases are located at opposing ends of the turbine case.

Abstract: A bearing assembly for supporting a rotatable shaft comprises a number of bearing pads supported in a housing and the mutually engaging surfaces of each bearing pad and the housing are two surfaces of closely similar shape.

Abstract: An integral pivot pad bushing seal bearing, adapted for sealing about a rotating shaft, includes a carrier ring having a radially inner generally cylindrical surface for providing a fluid seal about the shaft. A plurality of cavities are formed in the carrier ring so as to open in the radially inner generally cylindrical surface. Each cavity contains a pivot pad having a radially inner generally cylindrical pad surface which is substantially flush with the radially inner generally cylindrical surface of the carrier ring. The carrier ring and the pivot pads are contained in the same axial length as a unitary structure and act together to both seal and support the shaft. Each cavity can have a longitudinally extending groove in its radially outermost portion for receiving high pressure fluid to press each pivot pad inwardly toward the shaft. A second groove, in communication with the first groove, can be formed in a cavity end wall to apply high pressure to an axial face of the pivot pad.

Abstract: A double tilting pad journal bearing includes a substantially cylindrical, open ended beating casing having a longitudinal axis extending therethrough, an interior surface of which supports a plurality of beating liner pads for circumferential and axial tilting movement relative to the casing and to the longitudinal axis. The casing is formed with a pair of annular oil feed grooves in the exterior surface thereof communicating with the interior of the bearing casing by a plurality of radially directed feed passages. The interior surface is also formed with at least one oil drain annulus in communication with at least one radially oriented drain port. Annular seals are fitted within grooves at opposite ends of the bearing casing. The bearing liner pads are secured within the casing by a sliding tongue and groove fit which nevertheless permits tilting of the pads both circumferentially and axially.

Abstract: The tilt pad journal bearing assembly includes a conduit within the bearing housing for supplying lubricant hydrostatically to each tilt bearing pad. The conduit includes a flexible segment coupled at respective opposite ends to the tilt pad and to a quick connect/disconnect coupling extending through an aperture in the side wall of the bearing housing. A supply line is coupled to each supply conduit adjacent the side wall by the quick connect/disconnect coupling. The flexible segment within the bearing housing accommodates the rocking motion of the tilt pad and the design and routing of the external supply line is therefore not dependent on any requirements of the bearing assembly. To service the bearing assembly, a set screw is unscrewed, permitting a portion of a coupler, together with a bushing to be withdrawn through the aperture into the interior of the housing for withdrawal with the tilt pad as a discrete sub-assembly.

Abstract: A compliant hydrodynamic gas bearing comprises a nonlinear spring arrangement for supporting a plurality of tilting arcuate pads which hydrodynamically carry radial journal loads. The nonlinear spring support arrangement enables the bearing to provide increasing load-deflection capacity under extreme loads to limit deflection to a predetermined clearance. The spring arrangement provides nonlinear load-deflection capabilities while operating with a designed constant bending stress.

Abstract: The slider block of a scroll compressor has an axial bore therein which is defined by a number of pads. The pads are axially and circumferentially spaced and collectively define a deflection bearing as well as the bore.

Abstract: A disk drive motor having a low profile construction and a gas-lubricated deflecting pad support usable in the disk drive motor and elsewhere includes a cup-shaped rotor having an integral cylindrical portion extending from the base of the cup; the cylindrical extension may be a shaft or a large hollow extension which encloses the stator windings. The stator can be conventional or can have a closed end and/or a cup-like portion to simplify construction and eliminate the need for a seal. A support mounted on the stator or the rotor supports the rotor for rotation relative to the stator. The support can be a deflecting pad support such as a deflecting pad hydrodynamic bearing or the plane or gas-lubricated deflecting pad support disclosed herein.The gas-lubricated deflecting pad support member includes bearing pads and a support structure which supports the bearings for strictly radial movement. A contoured surface is formed on the pad surfaces or a support surface opposing the pad surfaces or both.

Abstract: The bearing described comprises a bearing housing (1); a cylindrical outer race (2) for pivoting segments; pivoting segments inserted into said outer race and distributed around its circumference; and a lubricant feed system (4). The pivoting segments (3) have, on the shaft side, a sliding surface (5) with a transverse groove (6) for the lubricant supply on the stage of its sliding surface (5) which is opposed to the direction of movement of the shaft and one the other side a rocking surface (8), the radial cross-section of which corresponds to the sector of the circle having a radius which is smaller than the radius of the cylindrical outer race of the pivoting segments. Furthermore, the pivoting segments form, on both sides of the rocking surface (8) a gap (10, 11) in relation to the cylindrical outer race (2), the gap (10, 11) tapering off in a manner which matches that of the rocking surface (8).

Abstract: The present invention is directed to a sealing device for a rotary fluid machine having bearings which are disposed at opposite end portions in a shaft chamber and support a shaft, the sealing device being characterized by comprising a fluid seal of a fluid having a higher pressure than in the shaft chamber, the fluid seal being provided at a portion in the shaft chamber through which the shaft extends; usual dynamic pressure type bearings disposed in the middle of the fluid sealing device itself or in the vicinity of the middle thereof, the bearings being further received in a housing of the sealing device; and sealing members for partially confining a space defined between the housing and the bearings in an axial direction and a peripheral direction in order to form a closed loop; whereby the bearings are pressed downward by a differential pressure between a pressure of the fed fluid and a pressure in the outside of the shaft chamber so as to permit increasing the number of kinetic fulcrums for the shaft an

Abstract: A hybrid bearing for a horizontal rotatable shaft includes an upper portion which is essentially a half section of a fixed arc journal bearing. The lower portion of the bearing is essentially the lower portion of a tilting pad bearing. Appropriate modifications are made to the oil film and drain lines and other peripheral elements to accommodate the hybrid nature of the bearing. The resultant bearing has the low power loss characteristics of the journal bearing, and additionally, the stability characteristics of a tilting pad bearing.

Abstract: The inner boundary of a bearing ring has support strips which act as support surfaces for tilting segments secured by retaining studs. The support strips are parts of a cylindrical support surface and have originated by the remaining parts of the cylindrical support surface being cut away by cylindrical guide surfaces. The tilting segments are preferably annular cylindrical sectors.

Abstract: A shoe journal bearing having a series of shoes with a leading edge distribution groove, and bleed grooves so as to prevent oil starvation of any area of the shoe, and an oil feed tube connected between the outer end of the oil distribution groove and an oil supply hole in a shoe retaining ring. The oil feed tube is provided with O-ring seals to seal the oil supply system against leakage and directs the oil against the working faces of the shoes where it is needed and prevents the oil from leaking into areas where it is not needed or useful.

Abstract: For use in a pressure fed or flood lubricated bearing, there is disclosed a shaft load-bearing element (e.g., the thrust plate in a tapered land thrust bearing) preferably comprising three metallic layers including an inner layer adjacent the shaft surface of metal possessing good bearing properties; an outer layer of structural steel to provide rigidity; and an intermediate layer of copper or copper alloy sandwiched between the inner and outer layers to provide good thermal properties. The metallic layers of such a trimetallic bearing element are metallurgically bonded at the interfaces between layers to enhance heat transfer. Advantageously, a shaft load-bearing element according to the invention is substantially free from distortion and damage during handling and avoids elevated temperature problems.

Abstract: An oil lubricated, double tilting, three pad journal bearing includes three pads asymmetrically located with respect to each other and with respect to the horizontal and vertical centerline of a horizontally disposed steam turbine shaft. Each pad has associated therewith an oil feed dam. Apparatus for lubricating supplies oil to a channel, formed by the feed dam and its corresponding pad, and the rotating shaft draws the oil from the reservoir as a film into the interstice defined by the shaft surface and the pad face.

Abstract: A pivoted segmental bearing in which leaf springs are disposed angularly equidistant between the outer surface of the annular shoe support member and the overlying inner surface of the outer support casing, and wherein the springs are immersed in the lubricating oil for the bearing. The annular shoe support member is also resiliently pressed axially against a wall of the outer support casing by helical springs.