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.

Belt transmission system for internal combustion engine

Abstract: PROBLEM TO BE SOLVED: To provide a belt transmission system which can prevent slipping of a belt without increasing the initial tension thereof when an accessory is driven by an engine, and which can prevent the belt from slacking due to aging effect or variation in environment. SOLUTION: This belt transmission device comprises a first automatic tensioner 7 and a second automatic tensioner 8 which can adjust the tension of a belt. The first automatic tensioner 7 has an idler pulley 7a located on the slacking side of the belt 6 with respect to a pulley 5 of an accessory module, and the second automatic tensioner 8 has an idle pulley 8a located between the pulley 5 of the accessory module and a crank pulley 1. It is noted that the idler pulley 8a of the second automatic tensioner 8 is set to be stationary in order to prevent lowering of the degree of belt tension which is required for transmitting a starting torque of the accessory module during a start of an engine, to the crank pulley 1.

Automatic tension-adjusting mechanism for window regulators

Abstract: A wire-driving device for a window regulator comprising a first pulley secured to a shaft supported rotatably to a casing, a second pulley secured to the shaft so as to be rotatable and axially movable along the shaft, and a wire of which both end portions are wound round said first pulley and second pulley respectively in the opposite direction to each other, the wire being capable to transmit power when the shaft is rotated, and ratchet teeth being provided on each of facing side surfaces of the pulleys, whereby elongation of the wire is automatically absorbed when the shaft is rotated to wind and unwind the wire round the pulleys.

Abdominator: abdomen and obliques exercise machine

Abstract: The present invention describes a specialized exercise apparatus and method for use that targets the muscles in and around the abdominal, oblique muscles and mid section of the body. The machine is comprised of a flat platform upon which an individual stands while grasping a pair of handlebars that are positioned at waist height. The handle bars are attached to the top of a vertical riser that extends downwardly and is attached to a pair of horizontal rotating pivot arms. The pivot arms are attached to the center of a rotating power pulley horizontally suspended by bearings below the forward area of said platform. The power pulley is connected by a belt to a resistance mechanism, such as a flywheel or turbine fan, again suspended by bearings, below the rear portion of said platform. In the flywheel adaptation of this invention, additional resistance is provided by an adjustable magnet that is controlled by a lever mounted to the side of the vertical riser. An individual stands upon the apparatus, and while keeping the lower body relatively stationary, rotates the handle bars, and thus the pivot arms, from side to side up to 220 degrees of rotation and provides an adjustable measure of resistance which produces an increased use of the muscles in and around an individual's torso and midsection area.

Weight lifting exercising device

Abstract: A physical exercise equipment, in the form of a pulling apparatus, having a weight, to which a string is attached, which is reeved over a number of pulleys, and a hand grip at the free end of the string. At least one of said pulleys is a displaceable lockable sheeting pulley, through the displacement of which the length of a looped portion of the string and accordingly also the length of the free end portion of the string is adjustable. The height of the sheeting pulley may be read on a scale.

Traction sheave elevator

Abstract: The invention relates to a traction sheave elevator. The elevator car (2) has been arranged to move along guide track (A) in an elevator shaft (1). The counterweight (3) has been arranged to move along guide track (B) in the elevator shaft (1). Both ends of rope (4) are attached to a fixed overhead structure (5). The elevator car and the counterweight are supported by the rope. The rope (4) is passed via a number of rope pulleys (6-14), one of which is the traction sheave while the others are diverting pulleys. Rope pulleys are connected to the counterweight (3), to the fixed overhead structure (5) in the upper part of the elevator shaft and to the elevator car (2). The elevator car is provided with a first pair of car rope pulleys (6, 7) placed at a distance from each other. The traction motor (15) has been arranged to drive one of the rope pulleys, which is the traction sheave. Connected to the elevator car is a second pair of car rope pulleys (9, 10), in which the car rope pulleys (9 and 10) are at a distance from each other. An auxiliary rope pulley (11) is connected to the fixed overhead structure (5). The rope (4) is passed from a car rope pulley (7) of the first pair of car rope pulleys (6, 7) via the auxiliary rope pulley (11) mounted on the fixed overhead structure to a car rope pulley (10) of the second pair of car rope pulleys (9, 10).