Patent ID: 9174803
Filing Date: 2015-11-03
Classification: A47F,B65G

Abstract:
1. In a conveyor system having a train of carrier plates which collectively provide a support surface upon which an item to be conveyed can be placed and an endless drive member to which each carrier plate in the train is connected and which defines a conveyor path along which the item to be conveyed is moved by the system wherein the conveyor path includes either rightward-turning sections or leftward-turning sections but not both rightward-turning and leftward-turning sections, and wherein each carrier plate is pivotally connected to the endless drive member to permit a pivotal adjustment of the carrier plate relative to the endless drive member in either a rightward or leftward direction as the train of carrier places is moved through the rightward-turning or leftward-turning sections of the conveyor path, the improvement characterized in that: each carrier plate defines a leading edge which is directed substantially forwardly of the conveyor path when the train of carrier plates is moved along the conveyor path, an opposite trailing edge, and each of the leading and trailing edges has a outer portion which is disposed adjacent a side of the carrier plate opposite the direction of turn of the rightward-turning or leftward-turning sections of the conveyor path and an inner portion which is disposed adjacent a side of the carrier plate corresponding to the direction of turn of the rightwardly-turning or leftwardly-turning sections of the conveyor path, and the leading and trailing edges of each carrier plate is shaped so that the trailing edge of a first of two sequential carrier plates in the train is accepted or received by the leading edge of a second of the two sequential carrier plates in the train; and each carrier plate is pivotally mounted to the endless drive member at a location upon the plate which is disposed between the leading and trailing edges of the plate yet closer to the trailing edge than to the leading edge, and each carrier plate is shaped so that the outer portion its leading edge is longer than the inner portion of its leading edge and so that the outer portion of its trailing edge is longer than the inner portion of trailing edge so as to provide the carrier plate with an asymmetric shape with respect to an imaginary line directed along the conveyor path and through the location at which the plate is pivotally mounted to the endless drive member and to thereby permit the train of carrier plates to be moved through a rightward-turning section or a leftward-turning section of relatively small radius and to ensure that the area of the support surface located substantially between the outer portion of the leading edge and the outer portion of the trailing edge is larger than the area of the support surface located substantially between the inner portion of the leading edge and the inner portion of the trailing edge, and so that as two sequential conveyor plates in the train are moved through the turn of a rightward-turning section or a leftward-turning section of the conveyor path, the trailing edge of the first plate of the two sequential carrier plates and the leading edge of the second plate of the sequential carrier plates are maintained in relatively close proximity to one another; and each carrier plate is shaped so that the outer portion of its leading edge is devoid of any bend which opens away from the direction of turn along the conveyor path to prevent an appreciable gap from forming between the trailing edge of the first plate and the leading edge of the second plate of the two sequential carrier plates along the side of the conveyor path opposite the direction of turn when the two sequential carrier plates are moved through a rightward-turning section or a leftward-turning section of the conveyor path and so that the inner portion of its leading edge is devoid of any linear section along the length of the leading edge to prevent a sizeable gap from forming between the trailing edge of the first plate and leading edge of the second plate of the two sequential carrier plates along the side of the conveyor path corresponding with the direction of turn when the two sequential carrier plates are moved through a rightward-turning section or a leftward-turning section of the conveyor path.