Topic
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.
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Patent•
10 Jan 1997
TL;DR: In this paper, a motorless treadmill is used for exercising the upper body and lower body of a user on a motorized exercise mechanism such as a pair of reciprocating arm members (16a, 16b).
Abstract: A motorless treadmill (10) for exercising the upper body and lower body of a user. Displacement of an upper-body exercise mechanism such as a pair of reciprocating arm members (16a, 16b) rotates a drive roller (28). The drive roller (28) is coupled to an endless belt (12), and a transmission system (20) links the drive roller (28) to the upper body exercise mechanism such that arm movements are translated into belt rotation. In one embodiment, pulleys are used as the transmission system (20) to transmit the energy from the movement of the arm members to the belt. A flywheel (60) may be added to store energy to smooth the belt rotation.
54 citations
54 citations
Patent•
[...]
03 Feb 1994
TL;DR: In this article, an exercising machine with an adjustable actuator arm assembly coupled to a weight stack by a pulley/cable assembly is described, which can be rotated through an arc to provide a number of operating locations.
Abstract: An exercising machine that has an adjustable actuator arm assembly coupled to a weight stack by a pulley/cable assembly. The actuator arm assembly includes an actuator arm that lifts the weight stack when rotated through an arc. The machine is constructed with a frame that has a vertical bar. The actuator arm is coupled to a sleeve assembly that can slide along the vertical bar, to provide a number of operating locations. The machine also has a first cable that is coupled to the actuator arm. The cable is looped around a first tension pulley, a first floating pulley and then fixed to the sleeve assembly. The first floating pulley is coupled to a second cable that loops around a second tension pulley and is attached to the weight stack. When the actuator arm is rotated, the first floating pulley is pulled in a downward direction. The movement of the first floating pulley pulls the second cable and lifts the weight stack in an upward direction. When the sleeve assembly is adjusted to a new position on the vertical bar, the cable lengths between the first tension pulley and actuator arm assembly, and between the first floating pulley and sleeve, change an equal and offsetting amount.
54 citations
TL;DR: In this article, a theoretical model is developed to predict the dynamic stability of a power transmission belt excited by an eccentric pulley, and an experimental investigation is performed on a beltpulley system with a pulley eccentricity; a laser displacement transducer is used to measure the transverse displacement.
54 citations
Patent•
23 Feb 1981
TL;DR: A torque transmission belt as discussed by the authors is a ring having excellent bending and tensile strength which is extended around pulleys positioned in the driving side and the driven side and a series of blocks composed of main blocks made of non-compressive material having high strength and secondary blocks making of elastic material, which are alternately arranged along the ring so as to be shiftably engaged therewith.
Abstract: A torque transmission belt means comprises a ring having excellent bending and tensile strength which is extended around pulleys positioned in the driving side and the driven side and a series of blocks composed of main blocks made of non-compressive material having high strength and secondary blocks made of elastic material, which are alternately arranged along the ring so as to be shiftably engaged therewith.
54 citations