A link (2) for a chain (1), and a chain (1) of links (2), the link (2) comprising a body defining first and second parallel through bores (4) separated by a length, in which the body has a first width (d1) perpendicular to the length over at least a portion of the body adjacent to each bore (4) and a second width (d2) through each bore (4) parallel to the first width (d1) and perpendicular to the length, in which the first (d1) and second (d2) widths are different. The links (2) may be joined by joints (3), each joint (3) joining a pair of successive links (2), each joint (3) comprising a body (5a, 5b) and two shafts (6), the body (5a, 5b) supporting the two shafts (6), with each shaft (6) engaging the first bore (4) of one of the pair of links (2) and the second bore (4) of the other of the pair of links (2), the joint (3) being arranged such that it can rotate relative to each of the of the pair of links (2) about the shaft (6) which engages each link (2).

A link (2) for a chain (1), and a chain (1) of links (2), the link (2) comprising a body defining first and second parallel through bores (4) separated by a length, in which the body has a first width (d1) perpendicular to the length over at least a portion of the body adjacent to each bore (4) and a second width (d2) through each bore (4) parallel to the first width (d1) and perpendicular to the length, in which the first (d1) and second (d2) widths are different. The links (2) may be joined by joints (3), each joint (3) joining a pair of successive links (2), each joint (3) comprising a body (5a, 5b) and two shafts (6), the body (5a, 5b) supporting the two shafts (6), with each shaft (6) engaging the first bore (4) of one of the pair of links (2) and the second bore (4) of the other of the pair of links (2), the joint (3) being arranged such that it can rotate relative to each of the of the pair of links (2) about the shaft (6) which engages each link (2).

Novel chain links that are used in combination with essentially identical chain links to form a chain that is useful in flex rake apparati for use in cleaning water streams.

Novel chain links that are used in combination with essentially identical chain links to form a chain that is useful in flex rake apparati for use in cleaning water streams.

A method of repairing a chain can include aligning a bore of an outer chain link with a bore of an inner chain link, inserting a pin through the aligned bores, the pin having a thread end opposite a head end, engaging a multi-jackbolt tensioner with the thread end of the pin, the multi-jackbolt tensioner having a plurality of fasteners, advancing each of the plurality of fasteners to press on the outer chain link, and forming an interference fit between the pin and the outer chain link at the bore of the outer chain link from the advancing of the fasteners.

A method of repairing a chain can include aligning a bore of an outer chain link with a bore of an inner chain link, inserting a pin through the aligned bores, the pin having a thread end opposite a head end, engaging a multi-jackbolt tensioner with the thread end of the pin, the multi-jackbolt tensioner having a plurality of fasteners, advancing each of the plurality of fasteners to press on the outer chain link, and forming an interference fit between the pin and the outer chain link at the bore of the outer chain link from the advancing of the fasteners.

A chain plate includes two end segments, and an intermediate segment between the end segments. One of the end segments has an extension portion extending away from a rod hole of the end segment in a lengthwise direction. A distance from a center of the rod hole to an edge of the end segment in the lengthwise direction is greater than a distance from the center of the rod hole to an edge of the end segment in a widthwise direction. An inner surface of the chain plate has a first inclined region corresponding to a peripheral region of the end segment, and a second inclined region corresponding to the extension portion and between the first inclined region and the rod hole. The intermediate segment is formed with a recess.

A chain plate includes two end segments, and an intermediate segment between the end segments. One of the end segments has an extension portion extending away from a rod hole of the end segment in a lengthwise direction. A distance from a center of the rod hole to an edge of the end segment in the lengthwise direction is greater than a distance from the center of the rod hole to an edge of the end segment in a widthwise direction. An inner surface of the chain plate has a first inclined region corresponding to a peripheral region of the end segment, and a second inclined region corresponding to the extension portion and between the first inclined region and the rod hole. The intermediate segment is formed with a recess.

To provide a versatile and easy-to-produce link plate that can reduce frictional resistance and keep surface pressure low while maintaining a small height of a guide-side end surface, and can secure a tensile strength, and a chain. The guide-side end surface of the link plate is made up of a flat portion formed by a flat surface parallel to a line connecting centers of connection holes at leading and trailing ends, and both end surface portions on both ends in the chain longitudinal direction of the flat portion. The both end surface portions are formed to come closer to the line connecting the centers of the leading-end and trailing-end connection holes as the both end surface portions extend further from the flat portion.

To provide a versatile and easy-to-produce link plate that can reduce frictional resistance and keep surface pressure low while maintaining a small height of a guide-side end surface, and can secure a tensile strength, and a chain. The guide-side end surface of the link plate is made up of a flat portion formed by a flat surface parallel to a line connecting centers of connection holes at leading and trailing ends, and both end surface portions on both ends in the chain longitudinal direction of the flat portion. The both end surface portions are formed to come closer to the line connecting the centers of the leading-end and trailing-end connection holes as the both end surface portions extend further from the flat portion.