Abstract: A pulley assembly has a first body to engage a power transmission belt. The first body is rotatable around a first axis. A second body is movable relative to the first body around the first axis. First and second axially spaced elastic members each has a radially inner portion and a radially outer portion. One of: (a) the radially inner portions of the first and second members; and (b) the radially outer portions of the first and second members are: (i) coupled to move together around the first axis; and (ii) each movable relative to the first and second bodies around the first axis. The other of: (a) the radially inner portions of the first and second members; and (b) the radially outer portions of the first and second members are fixedly coupled, one each to the first and second bodies, to follow movement of the first and second bodies around the first axis.

Abstract: The present invention provides an improved herbicidal composition including (a) an effective amount of an herbicidal cyclohexanedione oxime compound or agriculturally acceptable salt thereof; (b) one or more esters of a fatty acid; (c) a salt of dodecylbenzenesulfonic acid; (d) at least one nonionic surfactant selected from the group consisting of polyoxyethylene plant oils and polyoxyethylene sorbitan esters; and (e) optionally an aromatic hydrocarbon solvent. The present invention also provides a method for controlling the growth of vegetation, by applying to the vegetation the composition of the present invention.