Pulley

About: Pulley is a research topic. Over the lifetime, 51636 publications have been published within this topic receiving 178220 citations. The topic is also known as: drum & block.

Camshaft advancer for improving efficiency of combustion engine - uses slip-ring-free electric motor to alter position of camshaft relative to camshaft gear using planetary gearbox

Abstract: The camshaft (3) is driven (e.g. by belt or pulley) from a crankshaft through gear wheel (5) coupled to an extension (2). This acts as the ring gear of a planetary-type gearbox with an intermediary gear attached to the camshaft by bolt (20). An eccentric planet gear carrier (17) is fixed to the rotor (21) of an electric motor whose stator (22) is fixed in the housing (34). Excitation of the motor will cause relative movement between the camshaft gear (5) and the camshaft (3). ADVANTAGE - Exact positioning, no slip rings, min. friction loss. Minimises fuel consumption.

V-belt type continuously variable transmission

Abstract: A V-belt continuously variable transmission in which a V-belt is made to run on a drive pulley having a speed responsive mechanism and a driven pulley having a torque responsive mechanism. The torque responsive mechanism of the driven pulley includes a spring cap slidably mounted on a sleeve to which a fixed pulley half or sheave is affixed. The spring cap has a plurality of studs passing through openings formed through the fixed pulley sheave and connected to a movable pulley sheave slidingly mounted on the sleeve. Formed on opposed faces of the fixed pulley sheave and the spring cap are plural arcuate ramps, each including grooves into which balls are inserted to provide rolling contact and reduced friction between the opposed ramps.

Rotary closure for a sports shoe

Abstract: Separable parts of a sports shoe are movable toward and away from one another by means of a traction cable which can be wound on and off a cable pulley which is rotatably mounted in a housing, has an engaging projection, and cooperates with a stationary stop and with a stop construction which is rotatably mounted coaxially with the pulley. The stop construction has two rotatable stop arms which enable up to almost three turns of the cable pulley between extreme positions. In this way the rotary closure is on the one hand constructed for a relatively large adjustment of length and on the other hand is secured against overstreching of the traction cable.

Serpentine drive with coil spring alternator connection

Abstract: A serpentine belt drive system for an automotive vehicle in which the sequence of driven assemblies includes an alternator assembly comprising a housing and an armature assembly mounted in the housing for rotation about an armature axis. A hub structure is carried by the armature assembly outwardly of the housing for rotation therewith about the armature axis. A coil spring is disposed in operative relation between the alternator pulley and the hub structure for transmitting the driven rotational movements of the alternator pulley by the serpentine belt to the hub structure such that the armature assembly is rotated in the same direction as the alternator pulley while being capable of instantaneous relative resilient rotational movements in opposite directions with respect to the alternator pulley during the driven rotational movement thereof.