A method of biasing a worm shaft of a motor assembly including the steps of: providing a motor assembly having a housing defining an inner chamber, an access aperture spaced therefrom, a shaft aperture in communication with both the chamber and access aperture, and a shaft rotatably supported by and at least partially disposed in the shaft aperture; providing an ultrasonic device having a horn for producing vibrations; providing a slug having a body defining a first shape for being disposed in the access aperture, transformable to a second shape whereby the slug melts in response to predetermined vibrations; placing the slug in the access aperture; actuating the ultrasonic device so as to transform the slug to the second shape such that the slug melts and at least partially flows into the shaft aperture to abut the terminal portion.

A gear wheel includes helical toothing, and a segment for a gear wheel which is made up of segments, each segment having a toothing section having helical toothing, the toothing section being joined to a retaining section.

Apparatus and system of components to mechanically exfoliate particulate materials using a multi-axis approach to deliver predetermined forces to a particulate material, including containers to hold particulate material and media, also including media, and, the associated parameters for operating such equipment along with methods and compositions provided by the apparatus and methods.

Assembling method of a pinion on a turbine axis of an internal combustion engine, wherein said pinion is made in a single piece having axial symmetry and equipped with an annular toothed part and with an axial part coaxial with said annular part and provided with a coaxial hole with a thread to screw the pinion on said axis of the turbine, wherein said thread has localized pitch variations.

A drive gear for a generally cylindrical imaging component. The drive gear includes a body for engaging the generally cylindrical imaging component; a cylindrical shaft attached to the body, the cylindrical shaft having an end surface; and lobes extending longitudinally outward from the end surface.

A method of manufacturing a multi-material gear is disclosed. The method comprises the steps of (a) heating a first pre-form element of a first material to a temperature at which the first material can be formed; (b) heating a second pre-form element of a second material to a temperature at which the second material can be formed; and (c) forming the first and second pre-form elements in a die at least towards the shape of the gear, thereby providing bonding between the elements.

Gear wheel and method for reducing vibrations transmitted by a rotating shaft. The gear wheel includes an inner part, which is connectable to a cause of vibration, a connection element and a ring gear. The connection element is structured and arranged to reduce vibrations.

A gear includes teeth 3 to be engaged with teeth of a corresponding gear to transmit a rotational motion, in which a form (b) of a tooth root side of each tooth 3 includes: a first curved surface c which smoothly connects with a tooth surface a having an involute curve and has a profile represented by a curve which is convex in a direction opposite to the involute curve of the tooth surface a; and a second curved surface d which smoothly connects with the first curved surface c and has a profile defined by a quadratic function having a curve being convex in the same direction as that of the first curved surface c. Therefore, a stress generated on the tooth root side at the time of engagement with the teeth of the corresponding gear can be reduced, and the strength of the teeth can be increased.

This invention addresses the problem of providing a press-fit structure and a press-fit method capable of improving the durability of a gear which press-fits into a ring part. As such, the embodiment of this invention is that, while one end side in the central axis direction of the ring gear abuts against a protrusion formed protruding on the outer side of the radial direction of the ring part from the outer circumferential surface of the ring of the ring part, and wherein the press-fit structure press-fits the inner circumferential surface of the gear into the outer circumferential surface of the ring part, when the inner circumferential surface of the gear is press-fitted into the outer circumferential surface of the ring part, there is a tensile strength reduction mechanism reducing the tensile strength generated in the lower portion of the gear teeth in at least the position of the aforementioned end side of the gear.