To provide a wheel support bearing assembly, in which the sufficient proof strength of an inner race during assemblage onto the vehicle body can be secured without its function being lowered, the wheel support bearing assembly includes an outer member, an inner member, and rows of rolling elements interposed therebetween. The inner member includes an hub axle having a flange and an inner race on an inner race mount, with raceways defined in the hub axle and the inner race. The inner race has a counterbore at its inboard end. The hub axle has a plastically deformed portion which engages an axially oriented surface of the counterbore when radially outwardly crimped and does not protrude outwardly beyond an inboard end face of the inner race. The difference P between the inner race mount and an outer peripheral face of the plastically deformed portion is 0.13 mm or more.

Wheel support bearing assembly

A serpentine belt drive system (18) for an automotive vehicle comprising a drive assembly including an internal combustion engine (10) having an output shaft (14) with a driving pulley (16) thereon rotable about a driving pulley axis. A sequence of driven assemblies each has a driven pulley rotable about an axis parallel with the driving pulley axis and a serpentine belt (20) mounted in cooperating relation with the driving pulley (16) and with the driven pulleys in a sequence which corresponds with the sequence of the driven assemblies when related to the direction of movement of the belt to cause said driven pulleys to rotate in response to the rotation of the driving pulley. The sequence of driven assemblies includes an alternator assembly (26) including an alternator shaft (36) mounted for rotation about a shaft axis. A hub strucure (52) is fixedly carried by the alternator shaft (36) for rotation therewith about the shaft axis. A spring and one-way clutch mechanism couples the alternator pulley (26) with the hub structure (52). The spring and one-way clutch mechanism (72) comprises a resilient spring member (74) separately formed from and connected in series with a one-way clutch member (76). The resilient spring member (74) is constructed and arranged to transmit the driven rotational movements of the alternator pulley (26) by the serpentine belt (20) to the hub structure (52) such that the alternator shaft (36) is rotated in the same direction as the alternator pulley (26) while being capable of instantaneous relative resilient movements in opposite directions with respect to the alternator pulley during the driven rotational movement thereof. The one-way clutch member (76) is constructed and arranged to allow the hub structure and hence the alternator shaft to rotate at a speed in excess of the rotational speed of the alternator pulley when the speed of the engine output shaft is decelerated to an extend sufficient to establish the torque between the alternator pulley (26) and the hub structure (52) at the predetermined negative level.

Serpentine drive system with improved over-running alternator decoupler

A method for measuring temperature and of adjusting for temperature sensitivity of a
medical device having a position sensor comprises the steps of providing a medical device
having a position sensor and measuring voltage at the position sensor. A resistance value is
then determined from the measured voltage and a temperature value at the position sensor is
determined based on the resistance value. The temperature value is determined using the
position sensor. Accordingly, temperature is directly measured and monitored using the
position sensor itself. Additionally, a sensitivity is determined at the position sensor based on
the temperature. Location information from the position sensor is adjusted based on the
sensitivity.

Method and system for measuring temperature and of adjusting for temperature sensitivity with a medical device having a position sensor

An antifriction bearing (A) that enables a shaft (4) to rotate with minimum friction in a housing (2) includes a generally cylindrical outer race (46) located in an opening (12) in the housing, an inner race (48) located around the shaft, and rolling elements (50) arranged in rows between raceways on the outer and inner races. The outer race has a cylindrical exterior surface (56), whereas the opening in which the bearing is located has a flat wall (14, 16). A stabilizing block (C) may be attached to the outer race against its cylindrical surface, and this block lies along the flat surface of the housing opening to prevent the outer race from turning in the housing opening. A sensor module (B) is located within the environs of the bearing, and it contains a plurality of sensors (110, 112, 114) which produce signals that reflect conditions under which the bearing operates. Among the conditions monitored are speed, temperature and vibrations.

Bearing with sensor module

A rolling bearing unit with a rotational speed sensor comprising a stationary outer ring having a first raceway, a rotatable inner ring having a second raceway, a plurality of rolling elements rotatably provided between the first and second raceways, a sensor support case having a step portion for axial positioning, a detecting portion and a sensor mounted therein, an encoder having circumferentially changing magnetic characteristics and connected to the rotatable ring, a cover made of a synthetic resin, connected to the stationary ring, and having a fitting portion with respect to the outer ring, the fitting portion formed with a groove for mounting a seal ring therein, a mount hole for inserting part of the sensor support case therein, and a portion abutted to the step portion of the sensor support case for axial positioning, and an elastic member having a first portion engaged with the cover and a second portion engaged with the sensor support case to fix the sensor support case to the cover.

Rolling bearing unit with rotational speed sensor

An over-running clutch pulley in which a pulley sheave and hub cooperate to define a composite inner cylindrical surface. A coil spring engages the composite cylindrical surface. The spring is oriented to transfer torque from the pulley sheave to the pulley hub when the pulley sheave is driving the pulley hub. The spring allows slip to occur between the pulley hub and sheave when the sheave is decelerated relative to the hub.

One-way over-running clutch pulley

An over-running clutch pulley in which an input hub and output hub are compliantly coupled to soften the transition between the unlocked and locked state of the over-running clutch pulley.

Compression spring complaint one-way over-running clutch pulley

A bearing assembly incorporating a speed and/or temperature sensor particularly adapted for motor vehicle wheel applications. The sensor incorporates a magnetized tone ring defining a radial or cylindrical face which interacts with an annular transducer. The transducer has a plurality of teeth facing the magnetized tone ring with separate first and second rows of teeth extending from the transducer frame. The first set of teeth engage one area of the tone ring defining one magnetic pole whereas the second series of teeth interact with regions of the tone ring defining the opposite magnetic pole. Relative rotation between the transducer and tone ring induces an alternating magnetic field through the transducer case which induces an alternating voltage in the winding coil. The transducer is efficiently packaged within the enclosed cavity of a bearing assembly. This invention further contemplates a means to allow transducer temperature to be evaluated by monitoring the DC resistance of the transducer winding.

Hub and bearing assembly with integrated rotation sensor and temperature measurement feature

A hub and bearing assembly particularly adapted for motor vehicle application having anti-lock braking system (ABS). Wheel speed sensors are provided in accordance with this invention having a tone wheel configured from a support substrate having a layer of magnetic ink coated thereon. The magnetic ink is magnetized after coating and can be used in conjunction with passive sensors such as variable reluctance types, or active sensors including semi-conductor Hall effect types. The wheel speed sensors of this invention can be adapted for driven or non-driven wheel applications and are sufficiently compact to enable the device to be integrated into the bearing structure and protected from environmental exposure.

Rotational speed sensor utilizing magnetic ink tone ring

An over-running cluch pulley in which a pulley sheave and hub cooperate to define a composite inner cylindrical surface and in which a mechanism adds compliance to the system in order to lessen the abruptness of lock-on in the system.

Jonathan M. Adler

Papers

One-way over-running clutch pulley

Compression spring complaint one-way over-running clutch pulley

Hub and bearing assembly with integrated rotation sensor and temperature measurement feature

Rotational speed sensor utilizing magnetic ink tone ring

Complaint one way over-running clutch pulley