Abstract: A ceiling fan includes a support, a motor portion, a blade portion, control section, illumination portion, and case. Illumination portion includes lower illumination cover, upper illumination cover, and LED substrate portion. Heat dissipation plates are provided on a side of upper illumination cover.

Abstract: A support assembly for a fan includes a hanging member, an elongate support member, a resilient interface member, and a fastener member. The hanging member has a support surface and an inner circumferential surface defining a central passage. The elongate support member includes a first end portion and a second end portion, the first end portion extending into the central passage and defining a first fastener aperture and a second fastener aperture. The resilient interface member is interposed between the elongate support member and the central passage, includes a first plurality of outwardly extending ribs configured to engage the inner circumferential surface in the central passage, and defines a third fastener aperture substantially aligned with the first fastener aperture and a fourth fastener aperture substantially aligned with the second fastener aperture. The fastener member extends through the fastener apertures and is supported by the support surface.

Abstract: A turbo-compressor includes an impeller, a motor that generates heat by rotation and rotatably drives the impeller, a fluid passage through which a working fluid is forced by the impeller, and a heating mechanism that transfers the heat generated by the rotation of the motor to fluid upstream of the impeller so as to heat the working fluid at the inlet of the fluid passage.

Abstract: A centrifugal impeller for a turbomachine is provided. The centrifugal impeller comprises a plurality of aerodynamic vanes, each of the aerodynamic vanes having internal walls on which is associated a fabric element.

Abstract: A press-fit bearing locking system, apparatus and method is described. A press-fit bearing locking system includes a diffuser having a diffuser groove on an inner diameter (ID), a bushing comprising an outer diameter (OD) press-fit into the grooved ID of the diffuser, the OD of the bushing having a bushing groove tracing a path of the diffuser groove, and a high thermal expansion material (HTEM) key seated within the bushing groove. A press-fit bearing locking method includes seating a HTEM key inside a groove on an OD of a bushing, press-fitting the bushing with HTEM key into a diffuser such that the bushing groove is opposite a groove on an ID of the diffuser, operating an electric submersible pump assembly including the diffuser during a temperature rise, and allowing the HTEM key to expand into the diffuser groove during the temperature rise to lock the bushing against the diffuser.

Abstract: A pump fitting has an inlet adaptor (10) for connection to an outlet (39) of a container (38) of fluid and including an inlet passage (10), an outlet passage (11) for fluid and a pump housing (12) between the inlet passage (10) and the outlet passage (11). The pump housing (12) contains a rotor (17) rotatably received in an interior surface of the housing (12). The rotor (17) includes a housing-engaging surface (23, 24) co-operating with the interior surface of the housing (12) to form a seal therebetween and also including at least one shaped surface (21, 22) radially inwardly of the housing-engaging surface and forming with the interior surface of the housing a chamber (25, 26) for conveying fluid from the inlet passage (10) to the outlet passage (11) on rotation of the rotor (17).

Abstract: A blade of a propeller fan includes a blade root portion, a front edge portion, a blade tip end portion, a rear edge portion, a blade rear edge portion, and an outer edge portion. A blade surface of the blade has an inner region including the blade root portion, an outer region including the blade rear end portion, and a coupling portion extending from a front end portion located close to the blade tip end portion to a rear end portion located close to the rear edge portion and coupling the inner region and the outer region to each other such that a side of a positive pressure surface of the blade surface is projecting and a side of a negative pressure surface of the blade surface is recessed.

Abstract: A centrifugal compressor has a casing 7. In the casing 7 is formed a back-flow channel 9 to return fluid from a downstream position of an impeller full blade leading edge 6a to an upstream position of the impeller full blade leading edge 6a. The back-flow channel 9 includes a suction ring groove 9a and a back-flow ring groove 9b. The suction ring groove opens at the downstream position on the inner face 7a of the casing 7, and extends in the circumferential direction. The back-flow ring groove opens at the upstream position on the inner face 7a, and extends in the circumferential direction. Distribution in the circumferential direction of the axial-direction position of the suction ring groove 9a or a width of the suction ring groove 9a is asymmetric with reference to the rotation axis.

Abstract: A centrifugal compressor includes an expanded section which forms a cylindrical space between a suction opening and an impeller. An inlet tapered section is formed on an inlet side of the expanded section, and an outlet tapered section is formed on an outlet side of the expanded section. The expanded section has an inner diameter which is larger than an inner diameter of the suction opening and at least twice as large as an inlet diameter of the impeller.

Abstract: The centrifugal compressor (1) includes: an impeller (3); and a casing (2) accommodating the impeller (3). The casing (2) includes: an inlet (6); an impeller-accommodating portion (14) in which the impeller (3) is disposed; an annular chamber (11) formed around the inlet (6); a downstream groove (13) communicating a downstream end portion of the annular chamber (11) with the impeller-accommodating portion (14); and an upstream groove (12) communicating an upstream end portion of the annular chamber (11) with the inlet (6). In addition, the downstream groove (13) is provided in a predetermined range in a circumferential direction of the impeller (3) so as to communicate with a high-pressure part to occur in part of the impeller-accommodating portion (14), and the upstream groove (12) is provided over the entire circumference of the inlet (6).

Abstract: A fan assembly comprises a fan and a movable fan support. The fan has a motor and a fan blade drivable by the motor to move air in an airflow direction through an opening. The movable fan support is configured to movably support at least the fan. The fan support is mountable adjacent the opening on a first side and comprises extension members extendable from an operating position on the first side of the opening to an access position on a second side of the opening opposite the first side. In the access position, the extension members extend through the opening from the first side to the second side to support the motor and fan blade on the second of the opening for access.

Abstract: A wall ring for a fan, with a fan wheel, includes at least one heating element for heating the wall ring. The heating element includes an electrically conductive heating layer which is disposed on the inner side of the wall ring facing the fan wheel. The electrically conductive heating layer of the heating element may be configured as an electrically conductive CNT coating having carbon nano-materials.

Abstract: A pump for a dishwasher is configured as an impeller pump having a central water inflow to a rotating impeller for conveying the water in the radial direction out of the impeller into a pump chamber which surrounds the impeller in a ring-like manner and has a heated pump chamber wall on its outer side. Here, the pump has an outlet in the end region of the pump chamber at an axial spacing from the impeller. Heating elements which have a decreasing power output with regard to the area power output in the axial direction of the pump toward the outlet are arranged on the pump chamber wall. An input of energy into the pump chamber can thus be varied and in the process adapted depending on a turbulent or laminar flow.

Abstract: A fluid-flow machine includes at least one rotor having a rotary element with a plurality of rotor blades arranged on the rotary element, and a circumferential casing having a central axis and surrounding the rotor. The circumferential casing or a part connected thereto has an annular space surface on the inside, which delimits a flow duct of the fluid-flow machine radially outwards. The annular space surface has a structuring at least in one area adjoining a rotor on the circumferential side. At least one structuring of the annular space surface has, relative to the central axis of the circumferential casing, a circumferentially asymmetrical design.

Abstract: A propeller system for an aircraft includes an assembly for modifying a sound field of the propeller system. The propeller system includes a rotor supported for rotation about a rotor axis. The rotor has a central hub and a plurality of blades each extending outwardly from the hub to a tip. The rotor and blades are operable to propel an aircraft to travel in a direction. The rotor blades define a rotor plane perpendicular to the rotor axis. The blade tips define a circumferential rotational path as the blades are rotated by the rotor. The propeller system includes an acoustic resonator or multiple resonators having openings disposed within a distance to the propeller blade tip that is small compared to the wavelength of the propeller's fundamental blade tone and proximate to the rotor plane. The resonators are excited by tip flow of the blade as it passes the opening.

Abstract: The present invention provides a splinter shield for a vacuum pump, capable of reducing costs of the splinter shield by obtaining a single sheet of splinter shield having a required strength, in which fastening strength to a fixing groove is enhanced to prevent the splinter shield from bending toward the inside of a pump and coming into contact with equipment inside the pump when air rushes into the pump through an inlet port and to prevent the splinter shield from falling. Furthermore, attachment and removal of the splinter shield with respect to the inlet port are facilitated.

Abstract: A fan assembly for creating an air current is described, the fan assembly having a nozzle, a system for creating an air flow through the nozzle and a filter for removing particulates from the air flow, the nozzle having an interior passage, a mouth for receiving the air flow from the interior passage, and a Coanda surface located adjacent the mouth and over which the mouth is arranged to direct the air flow, wherein the fan provides an arrangement producing an air current and a flow of cooling air created without requiring a bladed fan, i.e. air flow is created by a bladeless fan.

Abstract: An aspirator for a brake system is provided having integrated functions of a flow bypass and a check valve for automotive applications to achieve various suction flow openings in response to different engine operating conditions to enhance brake boost performance. The brake system includes a brake vacuum booster, an engine having an intake manifold, an aspirator having a movable convergence nozzle, the aspirator being connected to the manifold, and a vacuum line connecting the booster to the aspirator. The aspirator includes a body having an interior end wall. A biasing element such as a spring is provided between the movable convergence nozzle and the interior end wall of the aspirator body. The body of the aspirator has an air flow path having an upstream area and a downstream area. The movable convergence nozzle is positioned in the upstream area of the flow path.

Abstract: A jet pump, a jet pump data tool system, and method of use thereof. The jet pump includes a body having an intake, a first aperture, and a second aperture between the first aperture and the intake. A carrier is seated in the body and receivable in the first aperture. The carrier includes a venturi for drawing wellbore fluid from the intake into the venturi. A housing for a data tool extends from the carrier. The housing is in fluid communication with the intake for allowing wellbore fluid to be exposed to the data tool. The carrier is seatable in the body by flowing power fluid and the carrier into the first aperture. The carrier is retrievable from the body by flowing power fluid into the second aperture.

Abstract: A hydrostatic drive system (1) has a hydrostatic pump (3) driven by a drive motor (2) and connected in a closed circuit with a hydrostatic motor (4). The hydrostatic motor (4) drives a consumer (5) and the closed circuit is formed by a first hydraulic connection (6a) and a second hydraulic connection (6b). A hydrostatic accumulator (30) can be connected with at least one of the two hydraulic connections (6a, 6b). A hydrostatic drive unit is located in an accumulator flow path (21) between one of the two hydraulic connections (6a, 6b) and the hydrostatic accumulator (30) and an additional hydrostatic drive unit is located in a tank flow path (22) between the other of the two hydraulic connections (6a, 6b) and a tank (17). The hydrostatic drive unit and the additional hydrostatic drive unit are a hydrostatic dual-flow double drive unit (20) provided in the accumulator flow path (21) and in the tank flow path (22).

Abstract: A device for riveting and a hydropneumatic device for pressure transmission, including a working piston and a transmitter piston in the form of a double-acting cylinder for transmitting pressure to the working piston, wherein a working stroke of the working piston in a working direction includes a first stroke and a subsequent second stroke, wherein the first stroke is controlled by means of pneumatic pressure acting on the working piston and the second stroke is controlled by means of pneumatic pressure acting on the transmitter piston, and wherein hydraulic fluid is displaced by the transmitter piston and the displaced hydraulic fluid effects the second stroke of the working piston. Regulation means having an actuating device are provided for regulating the pneumatic pressure on both sides of the double-acting cylinder of the transmitter piston such that the second stroke of the working piston is predefined by way of the regulation.

Abstract: A hydraulic drive unit for use in a vehicle or other application incorporates a motor connected to a pump through a porting system and an output shaft driven by the motor. A mechanical brake is used to brake the motor, while a valve provides a hydraulic brake for preventing flow between the hydraulic motor and the hydraulic pump. A brake actuator is connected to both the mechanical brake and the hydraulic brake, whereby actuation of the brake actuator causes both the mechanical brake and the hydraulic brake to be actuated.

Abstract: A rotary actuator includes a housing, a rotor assembly rotatably journaled in said housing and including a rotary output shaft, a central actuation assembly including a central mounting point formed in an external surface of the rotary output shaft, said central mounting point proximal to the longitudinal midpoint of the rotary output shaft, a mounting assembly adapted for attachment to an external mounting connector of a mounting surface of an aircraft structural member, and an actuation arm removably attached at a proximal end to the central mounting point, said actuation arm adapted at a distal end for attachment to an external mounting feature of an aircraft assembly to be actuated.

Abstract: A hydraulic cylinder enclosing a cavity, the cylinder containing a thru hole, an inner cylinder surface, and a longitudinal axis, and a piston within the cavity and movable relative to the cylinder in parallel to the longitudinal axis between a first and second positions. The piston includes a rod extending through the thru hole, the piston attached to the rod and in sealed engagement with the inner cylinder surface, and dividing the cavity into low and high pressure cavities, and each of the low and high pressure cavities containing a hydraulic fluid. The hydraulic cylinder further including a flexible bladder within the high pressure cavity containing a gas and preventing the gas from mixing with hydraulic fluid in the high pressure cavity.

Abstract: Motion of rams in fluid cylinders to drive machine parts is equalized by equalization chambers between drive chambers for equalizing outward and inward driven motion of the rams and the attached machine parts, irrespective of portions of loads and forces on the machine parts in relation to the rams. Duplicated machine parts may be closely positioned or widely separated, while providing the same controlled equalized movement irrespective of loading. The movable elements may be tilted to new angular positions before they are translated by the rams.

Abstract: A clip for removably and releasably securing an item onto a structure may include a singular, elongated body with an interior portion forming a cavity on the bottom end of the elongated body. The cavity may be sized and shaped to receive an edge of the structure for removably securing the clip to the structure. The clip may include a pushing surface sized and shaped for a user to removably secure the clip on the edge of the structure. The clip may also include a first set of two or more tabs disposed along the side portions of the elongated body and projected out at an acute angle, the first set of two or more tabs sized and shaped to provide a gripping surface on the side portions of the elongated body for the user to pull the clip off of the edge of the structure.

Abstract: A bed fastening device providing connection of the components in a bed structure, including a first mating part and a second mating part correspondingly mounted proximally to one end of bed components. The first mating part includes an elongate parallelepipedal plastic item with equidistantly spaced planar partition walls extending into side housings of tubular members, openings being provided in between sequential partition walls and side housings. The second mating part includes an elongate planar base plastic item with perpendicularly oriented, equidistantly spaced tubular members provided with side extensions. Engagement of the mating parts and of the bed fastening device and accordingly of bed components takes place with the introduction of tubular members of the mating parts within the openings of mating parts and the vertical downward displacement of the mating parts.

Abstract: An anchoring device has an insert sleeve and an expanding rivet. The insert sleeve is anchorable in an insert recess of a support part via engagement tongues. In a final assembly configuration, spreading arms of the expansion rivet are situated in arm clearances of the insert sleeve by the action of an expansion shank of a rivet pin, and are engaged with retaining edges of the insert sleeve. In this manner, the mounting part is removably connected to the support part with the expansion shank removable from the rivet body by releasing the spreading arms from the insert sleeve in order to release the connection.

Abstract: A clip connection for coupling at least two components together, e.g., for fastening a first component to a second component in a joining direction, may include a plug-in pin arranged on the first component and having a longitudinal center axis extending parallel to the joining direction. The pin may include a conical longitudinal section that tapers in the joining direction. A radially resilient engagement hook may be provided engageable with an engagement contour. A sleeve may be arranged on the second component and have a longitudinal center axis extending parallel to the joining direction. The sleeve may include a plurality of radially resilient spring elements having a free end that supports the plurality of spring elements on the conical longitudinal section of the pin under radial preload when the sleeve and the pin are plugged together. The pin may be pluggable into the sleeve in the joining direction.

Abstract: A method of providing an electrical grounding point on an aluminum structural member of a motor vehicle. The member is hydro-formed to produce a closed cross-section, after which a hole surrounded by a flange is formed in a wall of the member. The flange is generally the shape of a truncated cone and extends toward an interior of the member. A self-tapping fastener having a grounding lead attached thereto is driven into the hole to cut threads into the flange and secure the grounding lead to the member. The self-tapping fastener allows the grounding connection to be achieved without any access to the hollow interior of the member as would otherwise be required.

Abstract: The present invention relates to headed push-in fasteners of the type produced by Penn Engineering & Manufacturing Corp. known as TackPins and TackScrews. More specifically it relates to a Tack Pin or a Tack Screw with a Belleville head that provides the functionality of a Bellville washer without needing a separate part. When installed, the compression of the Bellville shaped head will cause a permanent loading to be applied under the head of the fastener, essentially creating a clamping force to the members being attached.

Abstract: A firearm barrel nut assembly including barrel nut, generally cylindrical in shape with a threaded central bore, and an externally threaded locknut which is used in conjunction with the barrel nut to secure a barrel to a firearm upper receiver. The barrel nut has an integral bushing on its exterior constructed to support either the gas tube or piston of the host firearm's operating system. The barrel nut is configured so that it may be independently and non-rotationally held within a vice or other fixture during installation of the barrel and while the locknut is tightened to a preset torque to hold the barrel in place while the barrel nut is independent of the torque applied to the locknut to properly secure the barrel to the upper receiver.

Abstract: A clip nut, including a clip. The clip has a first retaining device, a second retaining device, and a connecting device, which connects the first retaining device to the second retaining device. The distance between the retaining devices is variable. The extension of the first and second retaining devices substantially define an x axis and the extension of the connecting device substantially defines a z axis. A y axis is perpendicular to the x axis and the z axis. The clip nut also includes a nut, which is arranged on the second retaining device such that an axis of the nut is aligned parallel to the z axis and/or perpendicular to the x axis. The axis of the nut is pivotable from the position of the axis of the nut parallel to the z axis and/or perpendicular to the x axis about the axis in an xz plane such that the parallelism of the axis of the nut with respect to the z axis and/or the perpendicular position of the axis of the nut with respect to the x axis is abandoned.

Abstract: In a method for connecting a press-in bolt with a metal sheet, the metal sheet is positioned upon a cover element of a joining tool. The press-in bolt is forced by the joining tool in a pilot hole of the metal sheet as the metal sheet is supported by the cover element in its capacity as a die, until a head portion of the press-in bolt rests upon one side of the metal sheet and the cover element is pressed upon a shaft portion of the press-in bolt and radially deformed to rest upon another opposite side of the metal sheet.

Abstract: Various embodiments relate to a bearing assembly including a support ring configured to reduce thermal warping under operational temperature conditions, a bearing apparatus that may utilize such a thrust-bearing assembly, and applications that incorporate the disclosed bearing apparatuses such as downhole motors in subterranean drilling systems, directional drilling systems, and many other apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed circumferentially about an axis. The thrust-bearing assembly further includes a support ring having the plurality of superhard bearing elements mounted thereto.

Abstract: The invention relates to an attachment point (1) comprising a connecting element (3) which comprises a section (5) for connecting an attachment device, a seat (9) for a fastening device (11) and at least one pair of rolling bearings (23) between the seat (9) and the connecting element (9), wherein the connecting element (3) is rotatable relative to the seat (9) and wherein the rolling bearings (25, 27) of the pair of rolling bearings each comprise at least one rolling element (29). In order to provide an attachment point that exhibits little wear, is easily rotated also when lifting heavy loads and is easy to install, it is according to the invention provided that the rolling bearings (25, 27) of the pair of rolling bearings (23) comprise an outer race (39, 41) attached to the connecting element (3).

Abstract: A bearing system for a turbocharger includes a bearing housing having a first end and a second end, with the bearing housing defining a central passageway. A first ball bearing and a second ball bearing are received by the bearing housing. The second ball bearing is spaced from the first ball bearing. The first and second ball bearings are each preloaded.

Abstract: An elastomeric bushing for a bearing. The bushing can, even after installation in the bearing, be pretensioned or calibrated, by displacement of elastomeric material in the interior of the bushing, where the displacement is carried out by different pressing mechanism and tensioning mechanism in the bushing and/or in the surrounding bearing.

Abstract: In order to adapt a balance piston unit of a compressor to a high speed, and to extend a service life of the compressor, a screw compressor according to the present invention includes a screw rotor including a rotor shaft, a radial bearing, a thrust plate, a balance mechanism, which is a slide bearing, a lubrication oil supply flow passage for supplying a lubrication oil, and a working fluid supply flow passage for supplying a working fluid for pressing the balance mechanism toward the thrust plate so that a reverse thrust load acts on the thrust plate.

Abstract: Embodiments of the invention are directed to bearing assemblies configured to effectively carry nonuniform loads, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, under some operational conditions, one or more portions of the bearing assemblies and bearing apparatus may be preferentially loaded, such as to carry preferentially higher loads (e.g., radial and/or axial loads) than other portion(s) of the bearing assemblies and bearing apparatus.

Abstract: A multi-layer sliding bearing includes a sliding layer having a surface for contacting a component which is to be mounted. The sliding layer is made from a tin-based alloy with tin as the main alloy element and the sliding layer has on the surface, at least in sections, an oxidic subcoating in which the proportion of tin oxide(s) is at least 50% in weight.

Abstract: Rolling bearing (1) comprising an inner ring (3), an outer ring (2), at least one row of rolling elements which are arranged between raceways formed on the rings (2, 3) and a ring gear (6) that has a circumference of less than 360° and is fixed to one of the rings (2). The ring gear (6) is formed of a single gear segment (7) which has a circumference substantially equal to the circumference of the ring gear (6) and is provided on its inner or outer peripheral surface with a plurality of meshing means (7b) and fixed only to one of either the inner or outer rings (3) of the rolling bearing (1).

Abstract: A tapered roller bearing includes an outer ring, an inner ring, a plurality of tapered rollers, and a holder. A nitrogen concentration in a surface layer portion under a contact surface is 0.3 mass % or more. The holder includes a small annular portion, a large annular portion, and a plurality of column portions. A pocket has a trapezoidal shape in which a portion housing a small diameter side of the tapered roller is located on a reduced width side while a portion housing a large diameter side of the tapered roller is located on an increased width side. Each of the column portions on the reduced width side of the pocket is provided with a cutout.

Abstract: A self-lubricating assembly for a linear guideway comprises two oil containers and at least a connector. Each of the oil containers has a body, at least one absorber, and a flexible lubricating element. A holding groove for accommodating the lubricant is formed inside the body, the outside of the body is formed with a rail contacting portion and a connecting portion. The absorber is disposed in the holding groove for sucking the lubricant. The flexible lubricating element is disposed firmly in the rail contacting portion, and at least a part of the flexible lubricating element is extended to the holding groove for sucking the lubricant. The diffusion velocity of the lubricant in the absorber is faster than the diffusion velocity of the lubricant in the flexible lubricating element. At least a connector connects the connecting portions of the oil containers, so the lubricant flows between the two oil containers.

Abstract: The present invention achieves construction for a seal ring-equipped ball bearing (1a) that allows the outer-diameter dimension of a load-bearing surface (35a) to be made large, allows a large contact area with a transmission gear (16) to be secured, and allows dynamic torque to be reduced. Seal lips (14a) of seal rings (4a) that cover opening sections on both sides of the seal ring-equipped ball bearing (1a) have a substantially horizontal V-shaped cross-section and are configured so that an outer-diameter-side inclined section (25) and an inner-diameter-side inclined section (26) are connected by a continuous portion (27). The inner-circumferential edge section of the inner-diameter-side inclined section (26), which is the tip-end edge of the seal lip (14a), is made to slide over the entire circumference of the outer peripheral surfaces of both end sections of an inner ring (8a), the end sections being cylindrical surfaces (30) without seal grooves.

Abstract: A bearing assembly for a motor vehicle drive train includes rolling elements, an outer race supporting the rolling elements, and an inner race rotatably supported by the rolling elements. The inner race includes a radially inner surface having a plurality of axially extending splines. The radially inner surface includes a primary chip groove formed therein that is defined by a primary cutting edge for spline cutting a mating shaft inserted into the radially inner surface. The radially inner surface further includes a secondary chip groove formed therein axially offset from the primary chip groove that is defined by a second cutting edge for spline cutting the shaft inserted into the radially inner surface.

Abstract: A vacuum pump comprises: a ball bearing which supports a rotor; a holding section which elastically holds an outer ring of the ball bearing; and a grease which is filled between the outer ring and the holding section, the grease having a consistency of NLGI No. 1.5 or less.

Abstract: A retention apparatus can be used for a driveshaft transmission assembly. The retention apparatus may include a catch mechanism and a resilient member. The retention apparatus may be mounted to a radial bearing assembly of a driveshaft transmission assembly. The catch mechanism of the retention apparatus may be sized to prevent the loss of certain driveshaft transmission assembly components downhole in the event of a failure of the driveshaft transmission due to dynamic loads produced during operation in a drilling system.

Abstract: A spring retainer for a damper for use in a torque converter is provided. The spring retainer includes a ring including a radially extending base and a spring retaining portion radially outside of the base. The spring retaining portion includes rounded sections spaced circumferentially from each other and shoulders circumferentially between the rounded sections. Each rounded section is configured for receiving an arc spring. The spring retainer also includes rivets fixed to the shoulders. The rivets protrude axially from the shoulders into an interior of the spring receiving portion and are arranged for contacting ends of the springs. A method of forming a spring retainer is also provided.

Abstract: Provided is a cage (5, 65, 95) for a constant velocity universal joint, which is formed into a ring shape with a substantially uniform thickness, including a plurality of pockets (20, 80, 110) formed in a circumferential direction of the cage (5, 65, 95), for receiving torque transmitting balls, respectively, the cage (5, 65, 95) being formed of carbon steel including 0.41 to 0.51 mass % of C, 0.10 to 0.35 mass % of Si, 0.60 to 0.90 mass % of Mn, 0.005 to 0.030 mass % of P, and 0.002 to 0.035 mass % of S, with the balance being Fe and an element inevitably remaining at the time of steelmaking and refining, the cage (5, 65, 95) being subjected to carburizing, quenching, and tempering as heat treatment, each of the plurality of pockets (20, 80, 110) having a side surface (23, 83, 113) finished after the heat treatment.