Abstract: A rotary wheel set system of a horological movement with a rotary wheel set, a first and a second bearing, for a first and a second pivot of the arbor of the rotary wheel set, the wheel set including a mass center in a position of its arbor, the first bearing including an endstone including a main body equipped with a pyramidal cavity configured to receive the first pivot of the arbor of the rotary wheel set, the cavity having at least three faces giving its pyramidal shape, the first pivot being capable of cooperating with the cavity of the endstone to rotate in the cavity, at least one contact zone between the first pivot and a face being generated, the normal at the contact zone or zones forming a contact angle (?h) relating to the plane perpendicular to the arbor of the pivot, wherein the contact angle (?h) is less than 45°.

Abstract: A method for manufacturing a component in a substrate including: a) modifying a structure of at least one region of the substrate to make the at least one region more selective; and b) chemically etching the at least one region to selectively manufacture the component.

Abstract: A bearing arrangement for an articulatable support (6) comprises bearing assemblies (20/28, 22/29, 24/30 and 26/32). In one embodiment the assemblies comprise a ball (20, 22, 24, 26) and aperture (40 FIG. 2) having sliding contact at discrete areas (36) during relative rotation. In another embodiment the sliding contact may be formed at a ball (20,22,24,26) and a plastics e.g. P.T.F.E. support (84, 85 FIGS. 10 and 11). Resilient displacement of the bearing contact along a rotational axis (A and B) is provided by planar spring supports (28, 32) and rigid support is provided by supports (29 and 30).

Abstract: A turbo blood pump includes a housing 1 having a pump chamber 2, an inlet port 3, and an outlet port 4, an impeller 5 disposed rotatably in the pump chamber, an upper bearing 9 and a lower bearing 10 supporting the impeller rotatably, and a driving force transmitting unit for driving the impeller to rotate. The upper bearing is supported at a position in the pump chamber below the inlet port, so that a cross-sectional area of the pump chamber in a plane including an upper end of the upper bearing and being orthogonal to a shaft of the impeller is larger than a cross-sectional area of a flow path of the inlet port at a portion where the inlet port is coupled to the pump chamber, and thus obstruction with respect to blood flow by the upper bearing is of such a degree as to be permissible from a practical viewpoint, while an impeller is supported by upper and lower bearings. Thereby, the pump is less likely to cause problems of blood stagnation and thrombus formation.

Abstract: A spindle positioning support structure includes a support body housed in a center opening of an air fan seat. The support body has an arched trough which has same profile as the bottom end of an air fan spindle. The arched trough has a top end formed a plurality of arched latch lips. Every two latch lips are spaced by a slot. Therefore the latch lips are extensible according to the diameter of the air fan spindle, and may couple with an indented annular groove formed on the peripheral rim of the air fan spindle thereby to allow the air fan spindle anchoring at a restricted center of the aid fan seat for positioning the air fan spindle accurately. The arched trough also may contain lube oil to reduce rotational friction of the air fan spindle.

Abstract: A galvano mirror unit includes a galvano mirror, a rotor to which the galvano mirror is mounted, a stator that rotatably supports the rotor about a rotation axis, a pair of center pins provided to the stator, and a pair of receive members provided to the rotor. The receive members respectively receive the center pins. The rotor is pivoted by the engagement of the center pin and the receive member.

Abstract: A spindle seat in a fan provides a spindle holding seat and a spindle with a conical end. Because the conical end contacts with the holding seat by way of point contact, the frictional area between the holding seat and the conical end is very small. Hence, a little friction force may generate to result in the fan is provided with a smooth running, low noise, and less heat generation.

Abstract: A galvano mirror unit includes a galvano mirror, a rotor to which the galvano mirror is mounted, a stator that rotatably supports the rotor about a rotation axis, a pair of center pins provided to the stator, and a pair of receive members provided to the rotor. The receive members respectively receive the center pins. The rotor is pivoted by the engagement of the center pin and the receive member.

Abstract: A galvano mirror is held by a mirror holder. The mirror holder is rotatable about a rotation axis and supported in a stator. A center pins (made of conductive material) are provided to the stator. A pair of receive members (made of conductive material) are provided to the mirror holder. Each of the receive member receiving respective center pin. A pair of coils are provided to opposing ends of the mirror holder, the movable parts being connected to the receive members. The center pins and the receive members constitute a electrical feeding path for feeding electricity to the coils.

Abstract: A transmission assembly used to connect with a rotatable ornament or a toy to provide bilateral rotations for achieving their cosmetic effect comprises a casing enclosing a set of three pinions which are driven by a battery-operated electrical circuit therein. An elastic rectangular bar used to restrict the rotary extent of a first pinion will elastically obstruct the rotary movement of the pinion in order to provide continuous bilateral rotation and each turn of the bilateral rotation will exceed 360.degree. without making any noise. The noses of the spindles of the pinions are formed as tapering sockets or as tapering pointed plugs to enhance the intensity of the assembly. Most of the components in this assembly are made integrally of plastic material so as to reduce the time and cost to manufacture.

Abstract: A shaft toe mount intended for inclined or vertical agitators such as are used for the processing of materials including food materials in a kettle, the present toe mount provides a bearing surface for that end of a rotary shaft of the agitator which extends into the interior of the kettle. Agitators advantageously mounted by the shaft toe mount of the invention include mixing structures capable of stirring or mixing operations within a kettle and particularly when inner walls of the kettle are to be scraped to prevent material adhesion or "burn-on" such as occurs when food materials are heated and/or cooked within a kettle. The present shaft toe mount is configured to allow rapid removal from the kettle so that the mount as well as the kettle and agitator can be cleaned daily according to accepted standards of cleanliness.

Abstract: A roller cutter assembly for a roller reamer which can be attached to a drill string is formed of a cylindrical body having an integral tapered bearing pin at each end. A journal bearing block for each bearing pin can be secured to the roller reamer by welding so as to hold the cutter rotatably on the reamer. The bearing block has a diameter slightly larger than that of the bearing pin. The angle of taper of the bearing pins and bearing surfaces is greater than the arc tangent of the coefficient of static friction between the coacting bearing surfaces such that the bearing pins do not self-lock in the bearing blocks.

Abstract: A high speed spindle is provided which includes a rotor driven by an electric motor and provided with tapered journals received in tapered rubber bearings. Lubricating water flows to the bearings through metered openings in the journals, flowing from the openings through reverse spiral grooves in the journals which have diminishing cross section. The water flowing through the rotor also cools the rotor, as well as the collet driven by the rotor and a tool held by the collet. Rubber seals around the rotor shaft wear to a zero clearance during run-in for confining the water that exhausts from the bearings. Compressed air is introduced into the spindle to cooperate with the seals in preventing water leakage. The compressed air also reacts against a bladder that is arranged to impose an end load on one of the bearings, which is movable, to urge the bearing toward its journal. The force is varied to increase the bearing end load as rotor speed increases.

Abstract: A rear wheel drive automotive vehicle is provided with a transaxle including a transmsision and a differential. The output shaft of the transmission extends rearward of a ring gear of the differential. A hypoid pinion gear is fixedly mounted on the rear end section of the output shaft and meshed with the ring gear. The pinion gear is rotatably supported on the inner surface of the rear section of a differential casing through a roller bearing. The roller bearing is detachable and adjustable in location relative to the differential casing rear section so that the pinion gear is readily removable to facilitate an adjustment operation of tooth contact between the pinion gear and the ring gear of the differential.

Abstract: A method for making a first object (1) which can be fixed with great precision with respect to a second object (2) comprises the steps of pressure-casting the first object from a plastically deformable, relatively soft metal such as light metals and zinc alloys, sizing the first object (1) at least in the area of desired surfaces (12, 13, 14) of contact between the first object (1) and the second object (2) by pressing the first object (1) into a sizing tool which consists of a hard material and has in the area of the contact surfaces (12 to 14) a negative form with respect to the desired form of the first object (1), the first object (1) undergoing a plastic deformation at least in the area of the contact surfaces (12 to 14). The additional step is performed of applying a relatively hard metal surface coating to the first object (1) at least in the area of the contact surfaces (12 to 14) (FIG. 1 ).

Abstract: A current-conducting bearing or contact bearing includes contact-making surfaces of a bearing bolt and a shaft fashioned as an axial cone and a hollow cone, respectively. With a suitable choice of materials of the current conducting parts, such as special bronzes, an allowable current load of up to 200 amperes per square cm is possible, compared to 4 amperes per square cm in the case of hard carbon and 25-30 amperes per square cm in the case of bronze carbon of traditional brushes in slip rings of electric machines.

Abstract: A precision, low cost bearing for connecting the ends of two hinge links to one another for relative pivoting, the adjacent end portions of the links being formed with housings each having a socket. A spindle fixed rigidly within one of the sockets is telescoped into the other of the sockets and is formed with a taper which mates with a taper formed in the closed end portion of the latter socket. A bushing is telescoped over the spindle and into the socket and is formed with a tapered hole which mates with a second taper on the spindle. The two sets of mating tapers coact to enable the spindle to turn in the bushing with a close but free running fit in spite of diametrical and axial dimensional differences between the socket, the spindle and the bushing.

Abstract: An improved surgical device and method for manufacturing the device are provided. The device is a high rotating speed arthroscopic probe shaver with bearing means that give superior longitudinal and radial support. Further, the outer tube of the probe shaver is swaged to fit very closely over the inner tube.

Abstract: A direct drive motor is disclosed comprising a base, an upright housing mounted on the base provided with bearings at the upper and lower end portions, and a capstan spindle held by the bearings, wherein one of the bearings is fitted screw-displaceably in the upper portion of said housing and provided with a hole receiving the upper end portion of the capstan spindle, held rotatably therein in both radial and thrust directions.

Abstract: The trackball device includes two supports for the trackball, each of which has a code wheel associated therewith. The journals on the end of each shaft and the bearing surfaces of the pillow block associated with the shaft are constructed to have substantially point contact and thereby minimize friction.

Abstract: A bearing assembly for mounting the movable member of a measuring instrument includes a bearing element engaging the movable member, a spring member applying a force to the bearing element in a direction toward the movable member, and a shock absorber fixed in the assembly operating as an abutment against which the bearing element is urged by the spring member. A liquid damping system provided in the assembly is formed by a first chamber located on the bearing side of the bearing element and a second chamber located on the opposite side of the bearing element with one or more passages being provided for the damping liquid to flow between the first and the second chamber during displacement of the bearing element, the passage being proportioned relative to the bearing element such that only a relatively small damping force is applied against the bearing element during displacement thereof.