Abstract: A steering gear apparatus of the rack-and-pinion type including a pinion formed with helical teeth and a rack member formed with helical teeth which are brought into meshing engagement with the helical teeth of the pinion in such a manner that a steering effort is applied to the meshed portion of the helical teeth of the pinion and rack member at a predetermined angle relative to an axis line of the rack member, the rack member being resiliently biased toward the pinion, wherein the helical teeth of the pinion or the rack member each are formed with a tip portion to be brought into engagement with each root of the helical teeth of the rack member or the pinion.

Abstract: A coupling for splining together first and second shafts which may be inner and outer, co-axial annular members, abutting co-axial annular members, or intermeshing gears on parallel shafts. One embodiment is a coupling for splining together inner and outer annular members having corresponding inner and outer cylindrical surfaces concentrically disposed about an axis and having splines which are generally circumferentially disposed on the cylindrical surfaces along an axial length of at least one of the members such that the splines having a varying pitch so as to be curved with respect to the axis. The pitch is defined by a function which varies parabolically with respect to a shaft axis and, in a more particular embodiment, the function has a non-zero fixed pitch component and a parabolic component so that the shape of the splines are both helical and parabolic.

Abstract: A self-locking dual worm gear with parallel axes and linear contact for the worms with involute herringbone gears is characterized by the fact that the cross sections for curvature radii p.sub.nm1 and p.sub.nm2 and the longitudinal sections for curvature radii p.sub.xm1 and p.sub.xm2 of the worm profile are always determined at the point of contact M for the teeth and with the following equations:p.sub.nm1 =p.sub.tm1 /cos .beta..sub.B1 ; p.sub.nm2 =p.sub.tm2 /cos .beta..sub.B2p.sub.xm1 =p.sub.nm1 .multidot.sin .beta..sub.B1 =p.sub.tm1 .multidot.g.beta..sub.B1 ; p.sub.xm2 =p.sub.nm2 .multidot.sin .beta..sub.B2 =p.sub.tm2 .multidot.tg.beta..sub.B2wherein p.sub.tm1 and p.sub.tm2 represent the curvature radii of an involute profile in the cross section at contact point M and .beta..sub.B1 and .beta..sub.B2 are the tooth edge inclinations for the worms with ##EQU1## wherein r.sub.m1 and r.sub.m2 represent the operational radii for the circles, which run through contact point M and r.sub.B1 and r.sub.

Abstract: A transmission subunit with an intermediate shaft having continuous gears of progressive pitch diameters interposed between pairs of conventional gears. The geometry of the continuous gears permits input gears, output gears, and/or idler gears to freely and independently slide longitudinally the length of the intermediate shaft without disengaging. Helical or spur cut gears can be used throughout. During shifting, an idler quickly passes from a conventional gear to an intermediate, continuous gear where it changes speed ratio progressively until the new ratio is achieved. At this point the idler quickly moves on to the next conventional gear to complete the shift cycle. An automatic locking mechanism assures precise, fixed alignment. As an example, a semi-continuous subunit consisting of two idler gears and three or four conventional running gears bridged with two or three continuous gears combined with a planetary gearset provides 14 to 22 forward speeds and 7 to 11 reverse speeds.

Abstract: A system performing a conical transition from a shaft to the core diameter of a worm is disclosed. The disclosed system includes inserting a rough milling machine in an axial direction before a disk milling machine used for milling the worm. The rough milling machine is especially manufactured integrally with the disk milling machine. The teeth of the rough milling machine are shorter than the teeth on the disk milling machine, and the teeth of the rough milling machine preferably define a truncated-cone shaped covering.

Abstract: Method of manufacturing a helical gear allowing strategic placement of a hardenable wear-resistant and high strength layer at predetermined locations on the gear. The method includes the steps of forming a gear core preform having the general shape of the helical gear and positioning the gear core preform within an elastomeric mold having the specific shape of the helical gear. The method also includes the steps of filling the mold at the predetermined locations with the hardenable metallurgical material and densifying the gear core preform and the metallurgical material. Lastly, the method also includes the step of heat treating the densified gear core preform and metallurgical material, to obtain the helical gear having a wear-resistant layer at the predetermined locations. A helical gear formed according to method is also provided.

Abstract: A driving force transmission device includes a worm meshing with a worm wheel. The worm has an outer casing defining a first helical groove on the outer peripheral surface thereof, and an inner cylinder mounted in the outer casing and provided on the outer peripheral surface thereof with a helical groove. The outer casing has ball transfer holes at both ends of the first groove and which transfer holes communicate with the helical groove in the inner cylinder. A plurality of balls are rollably and loosely fitted in the helical groove in the outer periphery of the inner cylinder, the first groove in the outer periphery of the outer casing and the second groove in the outer periphery of the worm wheel. The balls circulate between the helical groove in the outer periphery of the inner cylinder and the first helical groove in the outer periphery of the outer casing via the ball transfer holes. Frame rings mounted on the worm at both ends thereof prevent the balls from floating out of the first groove.

Abstract: Rotary locks used on transit vehicle doors when opened and closed by a rotating helical door drive member. In a preferred embodiment, a first lock utilizes a negative thread portion of the helical drive. A second lock utilizes a rotating lock pawl and stop. The drive and lock can be used to operate door systems with and without separate door hangers. Compensation for camber variations in car structure is provided through the use of spherical mounts or drive member journals.

Abstract: Improvements in gears and gear teeth structures for use in driving assemblies, such as machines, vehicles and the like, wherein the teeth portions of the gears and, in certain instances, other portions thereof, are coated with a hard synthetic diamond material deposited thereagainst as carbon atoms derived from a fluid, such as methane gas, when high energy radiation, such as microwave radiation, is beamed through the gas against the surfaces of the gears and gear teeth thereof. In certain instances, the hard diamond material coating the gear teeth and the spaces therebetween, is overcoated with a thin layer of chromium which serves to protect the diamond surfaces of the teeth during use so as to prevent destruction of the diamond layer by physical attrition caused by stress and abrasive particles engaging the teeth during use of the gears.

Abstract: A worm speed reducer consisting of a worm made of a relatively hard material such as cast iron or steel and a worm wheel made of a relatively hard material such as cast iron. A material strength is set so that an amount of wear of the worm becomes larger than that of the worm wheel. A tooth surface of the worm wheel is formed with a network irregularity extending in both a direction of a cutting scratch due to cutting and a direction intersecting the direction of the cutting scratch, and also formed with a chemical conversion coating having a thickness smaller than a height of the irregularity. A tooth surface of the worm is formed with a network irregularity extending in both a direction of a cutting scratch due to cutting (or a grinding scratch due to grinding) and a direction intersecting the direction of the cutting scratch (or the grinding scratch) of the worm, and also formed with a chemical conversion coating having a thickness smaller than a height of the irregularity of the worm.

Abstract: According to this invention, backlash is eliminated through the use of a split-worm that is preloaded by having a first part of the worm fixed in a stationary position on an input shaft and the second part of the split-worm mounted for limited axial movement along the input shaft relative to the stationary part of the split-worm. Both parts of the split-worm rotate with the input shaft, unlike the prior art. The ball gear uses recirculating balls instead of gear teeth to transmit the tangential load from one gear member to the other. The balls roll through ground grooves in the worm halves and thus drive the ball gear. The balls recirculate through an internal passage extending through the two parts of the split-worm. The ends of the internal passage communicate with the grooves on the exterior of the split-worm.

Abstract: A balanced worm gear attachable to an output shaft of a motor so as not to disturb the balance of the output shaft. The overall length of the worm gear is set to be an integral multiple of a predetermined pitch L of the worm tooth. The formed worm gear has symmetrical ends which can further be more closely balanced by chamfering the ends.

Abstract: The present invention provides a mechanism for converting rotary motion into translation motion, the mechanism comprising a first member which is rotated and which is constituted by a cylinder having a helical spring threaded thereover and fixed thereto at at least one point, and a second member for being driven in translation by the first member and including slots for co-operating with the thread constituted by the spring. This transmission system is intended, in particular, for use in relatively rudimentary mechanisms of the type used in agricultural machinery.

Abstract: A rotation transmitter using balls comprises a worm gear having a ball circulation path, a large number of metal balls inserted into the ball circulation path in a continuous row, a worm wheel having a large number of ball recesses for accommodating balls on the periphery thereof and meshed with the worm gear via the metal balls, collars provided at the opposite ends of the worm gear, and ball guides of semicircular sectional configuration provided to project tangentially from the collars and cover the ball ports of the worm gear. The ball circulation path is constituted of a helical ball race formed on the outer surface of the worm gear, ball ports formed at the ends of the ball race and a ball circulation passage provided to extend diagonally through the interior of the worm gear at a position offset toward the surface of the worm gear from the axis thereof so as to cause the openings at the opposite ends of the ball circulation passage to connect with the ball ports at an obtuse angle.

Abstract: A ball bearing for effecting endless linear motion comprising an elongated rod-like insert member and an outer sleeve member for receiving it within its longitudinally extending throughbore, with a plurality of balls intervened on the interface between the two members so as to effect a smooth relative linear motion thereof along their longitudinal axes.

Abstract: The present invention relates to a speed reduction apparatus for globoid worm gears. The speed reduction ratio of the engaged worm globoid worm gear and worm wheel is defined as the ratio of the rate of rotation of the globoid worm gear about its axis to the rate of rotation of the worm wheel about its axis. The structure of the present invention speed reduction apparatus is defined by the distance between the axes of rotation of the worm wheel and globoid worm gear and the spacial and speed relationships between the globoid worm gear and the surfaces of the cutting tool employed to generate the worm gear.

Abstract: This cluster of moulded gears with the helical teeth, comprising a group of coaxial pinions of which the teeth have the same helical sense and the same pitch, is characterized in that, Mrn and Mri designating the real moduli of any pinions respectively of rank n and of rank i of the group, Zn and Zi designating the numbers of teeth of the said pinions, and .beta.n and .beta.i designating their helical angles, the following relationship exists between these different parameters:sin .beta.n=sin .beta.

Abstract: A valve actuator differential worm planetary gear drive provides forward or reverse motion to a valve stem, from an input from either a motor-driven worm or a handwheel drive worm, by using a plurality of planet gears to send motion to the sun gear. If the preference is to have the motor drive the valve primarily, the manual worm stays locked and the motor worm acts as a planetary arm. When it is desired to move the valve by hand, the motor gear is fixed and rotation of the handwheel worm gear transmits the power through the ring gear and the planet gears to the drive sleeve.

Abstract: A rotation transmitter includes a worm shaft having an hourglass-shaped portion at the center thereof, a plurality of metal balls arranged in a row on a ball circulation path, a cylindrical housing for rotatably accommodating the worm shaft therein, a worm wheel inserted in an axial slot in the housing and provided in the outer periphery thereof with ball fitting grooves for receiving the balls, and holding means for holding the worm shaft within the housing so that the worm shaft is rotatable in a state of meshing with the worm wheel via the balls. A helical ball guide groove is formed in the outer periphery of the hourglass-shaped portion of the worm shaft, and a circulation bore penetrates the hourglass-shaped portion obliquely from one side to the other side thereof so that the opposite ends thereof communicate with the associated ends of the helical ball guide groove via tangentially curved guide holes. The ball circulation path is thus constituted by the guide groove and circulation bore.

Abstract: An improved method is provided for finish machining forged and/or rough-cut teeth (8) of a ring gear (40) by which a rotary tool such as a rotary carbide milling tool (24) is rotated about a rotational axis "r" that projectionally intersects a bottom surface (12) of tooth (8) as it tracks along a predetermined tool path enabling the rotary tool to be in close proximity to sidewalls (14 and 14') of teeth (8) and thereby eliminating the practice of having to normalize the ring gear microstructure prior to machining teeth (8).

Abstract: An apparatus for converting rotary motion into axial motion includes a spindle with an external contour and a nut with an internal profile and interposed contoured rollers which have two different contours, one of which produces an axial connection with the contour of the spindle, and the other of which produces a corresponding axial connection with the contour of the interior of the nut. It is preferred that the contour on the interior of the nut be in the form of relatively coarse grooves of V-shaped cross section, with fine simplex thread on the exterior of the spindle. Coarse grooves corresponding to and fitting the coarse grooves on the interior of the nut, alternating with a number of fine grooves corresponding to the fine simplex thread on the spindle, are provided on the outside of the rollers that are disposed between the spindle and the nut.

Abstract: An hourglass worm wheel and method of hobbing same wherein the finished worm wheel (70) includes a mid zone (B) where the root surface and outside helix are cylindrical for a predetermined distance along the axis of the worm wheel. The method forming the mid zone includes a combination radial and axial feeding of a hobbing tool (58) rotating in synchronization with the rotating worm wheel blank (50).

Abstract: A method and apparatus is disclosed for arranging gears of a helical gear transmission in order to reduce the degree of thrust and, thereby, the wear occurring between those gears of such transmission and the clutch associated therewith for selectably connecting the associated gear for rotation on the gear shaft.

Abstract: A new design for helical gearsets is disclosed in which the new gearsets meet all applicable ratings and standards of the American Gear Manufacturers Association (AGMA), and yet allows very substantial cost savings over prior similar gearsets having an equivalent AGMA rating. The gearsets of the instant invention generally are substantially thinner, and have fewer, but larger, gear teeth than the prior gearsets they replace. A helical gearset of the present invention includes a pinion and a gear, with the pinion and the gear each having a plurality of teeth. Each of these teeth has a helix angle ranging between about 18 degrees and 33 degrees. The pinion and the gear each have a face width and a whole depth, with the pinion having 13 or fewer teeth, and with the pinion and the gear having a face width-to-whole depth ratio of about 4.5 or less. The axial overlap of the gearset ranges between 1.001 and about 1.2.

Abstract: Device for constant velocity transmission of movement between two parallel shafts with axes of rotation (16) and (17) connected by an outside gearing. The pinion (14) and the pinion (15) of the outside gearing are helical with a helix having the same angle and the same direction, so that a pinion (14) and the pinion (15) rotate in the same direction.

Abstract: The invention concerns a method for depositing an interlining reducing friction and noise on a pitched cable consisting of a metal wire rope with a threaded helix. The preferred method consists in using a thermoplastic filament and raising the pitched cable to a temperature higher than the melting point of the thermoplastic used, and thereupon, winding the filament between the heated threads of the helix so that the flocks or hairs fuse or sinter to the metal wire and adhere.

Abstract: This invention provides a ball screw apparatus complying with high-cleanliness specifications insofar as the apparatus has an axial through hole open at one end of the shaft and a large number of smaller holes on the periphery of the shaft which communicate with the hole, and an air sucking mechanism having a port communicating with the axial hole on the shaft so as to apply a negative pressure to the axial hole thereof. The shaft of this ball screw apparatus acts as a sucking duct so as to allow the use of ordinary grease lubrication even within a clean-room without the necessity of changing lubrication conditions depending on the type of greases.

Abstract: In a worm wheel for a roller worm drive, each roller is movable along its axis relative to the body of the wheel, and biased towards an extended position by a spring. The springs are mounted in the space between inboard and outboard bearings associated with each roller, so as to conserve room within the roller wheel and hence permit use of large, robust, anti-friction bearings. In particularly preferred arrangements, the outboard anti-friction bearing can be used to limit outboard movement of each roller relative to the wheel body, and may also serve to transmit inboard-directed thrusts from the roller to the body via the biasing spring. The overall arrangement provides enhanced load carrying capacity and compactness in roller worm drives.

Abstract: A motion conversion mechanism comprising a threaded shaft and a nut, is disclosed. The nut comprises a cylindrical body having the inner surface thereof formed with a groove corresponding to the thread of the threaded shaft. A string having a low friction property surface is fitted in the groove such that it partly projects from the inner peripheral surface of the cylindrical body. The projecting portion of the string constitutes a thread to be screwed with the thread of the threaded shaft.

Abstract: A new design for helical gearsets is disclosed in which the new gearsets meet all applicable ratings and standards of the American Gear Manufacturers Association (AGMA), and yet allows very substantial cost savings over prior similar gearsets having an equivalent AGMA rating. The gearsets of the instant invention generally are substantially thinner, and have fewer, but larger, gear teeth than the prior gearsets they replace. A helical gearset of the present invention includes a pinion and a gear, with the pinion and the gear having a plurality of teeth. Each of these teeth has a helix angle ranging between about 18 degrees and 33 degrees. The pinion and the gear each have a face width and a whole depth, with the pinion having 13 or fewer teeth, and with the pinion and the gear having a face width-to-whole depth ratio of about 4.5 or less. The axial overlap of the gearset ranges between 1.001 and about 1.2.

Abstract: An anti-friction worm-wheel assembly wherein the anti-friction elements are ollers carried by the worm element. The rollers sequentially move through grooves in the edge surface of the wheel element to transmit drive forces from one element to the other. Aims of the invention are to achieve rolling contact of the anti-friction elements on the groove surfaces, relatively high load-handling capability, and a relatively simple low cost structure.

Abstract: A reduction gearing device for automobile accessory motor comprises first and second worms coaxially formed on a worm shaft in different thread directions, a pair of first and second intermediate gears each composed of two gear members, with one gear of each pair being engaged with a respective worm, and a common output gear engaged with the other gear member of each of the intermediate gears. The engagement of one intermediate gear with the first worm is in phase with the engagement of the other intermediate gear with the second worm while the engagement of one intermediate gear with the common output gear is in phase with the engagement of the other intermediate gear with the common output gear.

Abstract: Device comprising a screw (6) and a nut (8) subjected to an axial force which alternates in opposite directions, the thread (7) of the screw having a given helix angle and a given pressure angle which are so chosen that, in a first direction, termed reversible direction, the screw (6) is capable, under the axial thrust exerted in this direction by a spring (20), of effecting a translation and a rotation in the nut (8), and that, in a second direction, termed irreversible direction, opposed to the first direction, the screw undergoing an axial thrust in this second direction by a push-member (9), can effect neither a translation nor a rotation in the nut. This assembly may be applied to the automatic taking up of play of systems subjected to alternating longitudinal forces, such as shafts of electric motors or cable controls.

Abstract: A fluid-powered linear actuator having a body, and an output shaft with a piston portion disposed within the body. The shaft is axially movable in a first direction in response to fluid pressure on the shaft piston portion. A piston sleeve is mounted within the body and has a piston head to define with the shaft piston portion a fluid-tight chamber. A second fluid-tight chamber is provided on the opposite side of the piston head. Exterior sleeve splines transmit torque between the sleeve and the body in response to axial movement of the piston sleeve, and interior sleeve splines transmit axial force between the sleeve and the shaft in response to axial and rotational movement of the piston sleeve.

Abstract: A worm and meshing worm gear are provided. The worm has oppositely tapered frustoconical portions at either end thereof. The angle of taper of the two tapered portions is the same, but in different directions. The angle of taper is substantially equal to 360 degrees divided by the number of teeth in the worm gear. Contact between the worm and gear occurs over a plurality of teeth as contrasted with substantially only one tooth in the conventional cylindrical worm. The worm is capable of being formed by thread rolling.

Abstract: A pair of dry-sealed screw rotors for compressors which includes rotor tooth profiles in which an inter-tooth gap at a profile point on male and female rotor of a normal temperature is determined by an amount of interference due to thermal expansion caused during the operation of the compressors and an amount of minimum safety clearance necessary for the operation. The inter-tooth gap is further determined by a total thickness of seal coatings applied to the peripheral surfaces of the rotors at a profile point at which the thus determined gap is smaller than the total thickness of seal coatings. With the thus shaped rotor teeth, a most preferable seal line is achieved so as to produce an improved compression efficiency.

Abstract: A transmission ratio selector actuator has a transmission ratio selector assembly including a selector shaft and a toothed gear segment secured thereto. The selector shaft is adapted to drive a conventional transmission detent sector plate or "rooster comb". The toothed segment meshes with a gear member which is formed integrally with or otherwise secured to a Geneva drive sector. A drive pin for the Geneva drive sector is secured to a worm wheel which is driven by a worm shaft integrally formed with or otherwise secured to an electric motor. A plurality of electrical control switches are actuated by the Geneva drive sector to control the operation of the motor and thereby provide for proper positioning of the selector shaft. The worm wheel has integral therewith a cam surface which is actuated upon by brake shoes to ensure stoppage of the drive pin during disengagement from the Geneva drive sector upon deactuation of the drive motor.

Abstract: A worm gear has a threaded spindle and a threaded nut, the thread on the spindle or the nut or on both having a profile such that the transition regions connecting the thread crown surface to the thread flanks are rounded, as is the crown surface itself. Further, the spindle thread and nut thread are intermeshed with axial and radial play such that radial forces exerted under torque loading are transmitted only by areas of the crown surface, which transmitted forces are supported by the respective areas of the opposing groove bottom. Smooth functioning is ensured even when the threaded spindle occupies a position of maximum inclination relative to the nut.

Abstract: A support and driving member comprises an open framework comprising a helical strip (38) supported by a series of support members (39) extending longitudinally of the helical strip and internally thereof. The member may be incorporated in a shower unit that comprises a tubular housing (1) with a longitudinal slot (6), the driving member (16) being located coaxially within the housing and mounted for rotation about its longitudinal axis. A driving motor (15) housed in an end cap (8) has an output shaft (24) that rotates the member (16). Mounted on the member (16) for movement along the latter is a nozzle carrier (5) carrying an air nozzle (41) and a water nozzle that discharge through the slot (6). The nozzles are connected via flexible supply lines (SL) within the housing (1) to inlets (34) for treatment fluids.

Abstract: A screw rotor mechanism which includes a female rotor F having tooth crests each being formed by a leading side arc g2-a2 overlying a tooth tip circle Cf thereof and a following side are a2-b2 having its center at a point 07 on a pitch circle Pf thereof, and a male rotor M having tooth tips each being formed by an arc c1-d1 having its center at an interaxial line passing through axes Of,Om of the female and male rotors F,M. The male rotor M also has tooth bottoms being complementary to tooth female tooth crests or tips and forms no seal grooves thereon. The thus shaped rotors are adapted to be machined with a high efficiency by a gear hobbing machine.

Abstract: A worm gear drive wherein revolvable spheres captured in respective cages are equally spaced about a wheel rim with their centers on a common circle to mesh with a worm groove by rolling only on a track defined by a sidewall of that groove without sliding engagement, the track following a variable diameter hour-glass locus corresponding to an arucate locus of a radius equal to that of the common circle.

Abstract: An anti-friction worm-worm gear type speed reducer torque converter is disclosed. The speed reducer has a rotatably mounted worm gear adapted to mesh with a rotatably mounted worm incorporating a plurality of circulating rolling elements. In one embodiment, the configuration of the spiral thread of the worm is such that the balls incorporated in the load carrying side face of the spiral thread provide a substantially continuous substantially spiral shaped contact line with the load transmitting tooth of the worm gear. This is accomplished by providing the helicoid spiral thread of the worm with a flat, approximately bell shaped profile in the radial direction, with reference to the longitudinal axis of the worm, and by gradually modifying the trapezoidal dimensions of the spiral thread in axial cross-section.

Abstract: A parallel and outer axial rotating piston compressor has at least one helical main rotor and a corresponding auxiliary rotor meshing therewith. The main rotor includes a plurality of teeth, the flanks of which are configured as open screw surfaces defined by the screwing of a generating straight line, crossing the screw axis obliquely for each surface. The straight line forms a first inclination angle with a plane disposed perpendicular with the rotary axis of the main rotor. The screw surfaces define a throat screw line. A line tangent to the throat screw line forms a second angle of inclination of the plane. The first inclination angle is smaller than the second inclination angle. The slope of the generating straight line and the slope of the tangent line have opposite signs.

Abstract: A power transmission mechanism in which a small rotatable screw thread is arranged symmetrically with a large rotatable screw thread. The pitch and the pitch circle diameter of the large screw thread are the same integer times the pitch and the pitch circle diameter of the small screw thread. The screw thread grooves are connected through ball means and a convenient combination of screw threads provides an input shaft and an output shaft either in parallel or in alignment. This arrangement provides a power transmission mechanism of a compact size and a simple structure with an enhanced ratio of power increase and decrease.

Abstract: A power transmission mechanism having an hourglass worm with a continuous tooth groove. Cooperating with the hourglass worm is a wheel device having a plurality of recesses therein spaced around its circumference with the spacing between the recesses corresponding to a pitch of the continuous tooth groove. A roller is mounted in each of the recesses for rotation in a transverse direction with respect to the circumference of the wheel device and is in meshing engagement with the continuous groove. Each roller is formed from a pair of disc rollers.

Abstract: Apparatus is provided for converting rotational motion to linear motion which includes a screw shaft and nut surrounding the screw shaft, each having a helical thread. A plurality of threaded planetary rollers is interposed between and in contact with the threads of the screw shaft and nut. The screw shaft has a different number of starts than the number of starts on the nut.

Abstract: A ball-retaining structure in a power transmission apparatus for transmitting power by means of magnetic balls arranged between non-magnetic rotating bodies is disclosed, in which a magnet or magnets are arranged within either one of the rotating bodies in the vicinity of the balls.

Abstract: Adjusting mechanism is provided for the brakes of a highway trailer. A brake lever is actuated by a pneumatic cylinder and carries a worm gear which is mounted for turning with the lever, and also independently of the lever. The worm gear is splined for non-rotatable reception of a brake shaft. A saddle pinned to the lever carries a tapered worm which meshes with the worm gear. The worm gear is axially split, and the two halves thereof are forced axially away from one another by the worm under load into engagement with surfaces fixed relative to the lever for frictionally fixing said gear relative to said lever. The tapered worm also wedges the periphery of the gear into frictional engagement with a surrounding part of the lever. The worm is turnable to adjust the rotational position of the gear and hence of the brake shaft when not under load, and the worm is lockable in adjusted position.

Abstract: An intermittent drive member comprises a shaft with a spiral groove formed in the outer periphery of the shaft. The spiral groove includes a plurality of groove portions each having a linear bottom portion with a lead angle of zero degrees and a plurality of chamfered portions. The groove portions are successively formed by being axially shifted one after one along the shaft, and each of the chamfered portions forms the connection between adjacent groove portions.The intermittent drive member is employed in a mechanism which includes an electric motor for driving the shaft and a movable member having a tip end portion slidably fitted in the spiral groove so that the movable member is displaced when the shaft is rotated. The shaft is rotated to move the movable member in a predetermined direction when the tip end portion is in each of the chamfered portions, while the motor is deenergized to stop the movement of the shaft when the tip end portion is in each of the groove portions.

Abstract: There is disclosed a continuously variable ratio power transmission means comprising truncated cones having concave parabolic circumferential surfaces which surfaces are in rolling contact one with another and which can be moved in a linear fashion to provide a variable ratio dependent on point extent of overlap and rolling contact. In a preferred form of the invention positive drive is provided by a rack or band of gear teeth being provided in a helix around the periphery of each cone in a constant helix or lead angle.