An end link for use with heavy equipment includes a body and a swivel ball bushing. The body has first and second openings and defines a main body plane. The first opening has a slot located on a side thereof proximate the second opening and a truncated substantially spherical inner surface. The swivel ball bushing is seated within the first opening. The swivel ball bushing has a truncated substantially spherical outer surface in nesting engagement with the inner surface of the body and a projection at one end seated in the slot. The projection and slot are shaped to allow rotation of the swivel ball bushing relative to the body in two opposing directions about one axis of rotation or two mutually perpendicular axes of rotation.

An end link for use with heavy equipment includes a body and a swivel ball bushing. The body has first and second openings and defines a main body plane. The first opening has a slot located on a side thereof proximate the second opening and a truncated substantially spherical inner surface. The swivel ball bushing is seated within the first opening. The swivel ball bushing has a truncated substantially spherical outer surface in nesting engagement with the inner surface of the body and a projection at one end seated in the slot. The projection and slot are shaped to allow rotation of the swivel ball bushing relative to the body in two opposing directions about one axis of rotation or two mutually perpendicular axes of rotation.

A drive arrangement for a bicycle may be provided with various interactive components configured to reliably and repeatably engage and disengage with one another both when new and after a period of wear. The drive arrangement may include a drive sprocket assembly connected to a driven sprocket assembly with a chain movable by a gear changer.

A support and guiding apparatus for feeder lines having a feed pipe for excavation devices is disclosed. The apparatus has a support branch and a plurality of crosspieces connected with the support branch which includes ring chain having a first and a second series of rings linked to one another in an alternate manner, defining a longitudinal axis (X); a plurality of spacer elements coupled to rings of the first series of rings so that they cannot slide. Each of the spacer elements has a seat that houses a ring of the first series of rings by orienting it in a substantially stable manner on a first lying plane, a second seat and a third seat opposite to each other that partially house the rings of the second series of rings linked to the one housed in the first seat by orienting them on a second lying plane transverse to the first lying plane, each of said spacer elements being arranged to prevent the longitudinal sliding between the rings and to allow the rotation of the rings of the second series of rings only on the second lying plane around a rotation axis perpendicular to the longitudinal axis of the chain and to the second lying plane.

A support and guiding apparatus for feeder lines having a feed pipe for excavation devices is disclosed. The apparatus has a support branch and a plurality of crosspieces connected with the support branch which includes ring chain having a first and a second series of rings linked to one another in an alternate manner, defining a longitudinal axis (X); a plurality of spacer elements coupled to rings of the first series of rings so that they cannot slide. Each of the spacer elements has a seat that houses a ring of the first series of rings by orienting it in a substantially stable manner on a first lying plane, a second seat and a third seat opposite to each other that partially house the rings of the second series of rings linked to the one housed in the first seat by orienting them on a second lying plane transverse to the first lying plane, each of said spacer elements being arranged to prevent the longitudinal sliding between the rings and to allow the rotation of the rings of the second series of rings only on the second lying plane around a rotation axis perpendicular to the longitudinal axis of the chain and to the second lying plane.

A vertical or block chain connector for linking between two closed chain links includes a lower element and an upper element configured to engage with the lower element to form the chain connector in an assembled condition. In use the lower element is disposed vertically below the upper element in the assembled connector. The upper element is a sliding fit with the lower element and the direction of the sliding connection is in a straight line perpendicular to the longitudinal axis of the connector and in a plane which is parallel to the horizontal axis when the connector is vertically oriented in use.

A vertical or block chain connector for linking between two closed chain links includes a lower element and an upper element configured to engage with the lower element to form the chain connector in an assembled condition. In use the lower element is disposed vertically below the upper element in the assembled connector. The upper element is a sliding fit with the lower element and the direction of the sliding connection is in a straight line perpendicular to the longitudinal axis of the connector and in a plane which is parallel to the horizontal axis when the connector is vertically oriented in use.

A bicycle chain comprises a first outer link plate and a second outer link plate. A first outer-link longitudinal axis extends through a first outer-link center axis and a second outer-link center axis to divide a first outer surface into a first side and a second side when viewed in an axial direction. A second outer-link longitudinal axis extends through a third outer-link center axis and a fourth outer-link center axis to divide a second outer surface into a third side and a fourth side when viewed in the axial direction. The fourth side includes a first circumferential area and a first chamfer free area. The first circumferential area has a first angle equal to or larger than 20 degrees. The first chamfer free area is adjacent to the first circumferential area. At least one second chamfer is provided outside the first chamfer free area.

A drive system (35) for a people conveyor (1) comprises a conveyance chain (15) including a plurality of chain links (36) connected to each other; a plurality of legs (38) configured for connecting the conveyance chain (15) with the conveyance elements (13); and a plurality of levers (40). Each leg (38) is connected to at least two different chain links (36) by at least two of the levers (40). Each of the levers (40) is pivotably connected to one of the chain links (36) and pivotably connected to one of the legs (38).

A drive system (35) for a people conveyor (1) comprises a conveyance chain (15) including a plurality of chain links (36) connected to each other; a plurality of legs (38) configured for connecting the conveyance chain (15) with the conveyance elements (13); and a plurality of levers (40). Each leg (38) is connected to at least two different chain links (36) by at least two of the levers (40). Each of the levers (40) is pivotably connected to one of the chain links (36) and pivotably connected to one of the legs (38).