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No.4
特許番号	米国特許 4,306,292
発明の名称	Segmented asynchronous operation of an automated assembly line
出願日	1971/04/16
要約	An automated assembly line is controlled by a computer system. The assembly line is comprised of a plurality of machines which are each segmented into its basic unit operations providing work stations. The work stations are then controlled by the computer system and operated asynchronously with respect to the other work stations of the assembly line.
第一クレーム	1. A control system for an assembly line having a plurality of work stations comprising: (a) a plurality of subcontrollers, each subcontroller for controlling the operation of one or more work stations of the same type in the assembly line wherein the subcontrollers initiate operation groups by the work stations individually to the extent to which the work stations require a control; (b) a master controller including polling means for sequentially checking the state of each work station to determine whether the work station requires control; c means in the master controller for activating a subcontroller for each work station for which it is determined that the work station requires control; and (d) means for deactivating the subcontrollers for allowing the individual work stations to continue the operation groups independently of a subcontroller until said master controller determines that a further control is required wherein an independent asynchronous operation of each work station with respect to the other work stations of the assembly line is obtained.
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No.5
特許番号	米国特許 4,884,674
発明の名称	Segmented asynchronous operation of an automated assembly line
出願日	1985/01/30
要約	An automated assembly line is controlled by a computer system. The assembly line is comprised of a plurality of machines which are each segmented into its basic unit operations providing work stations. The work stations are then controlled by the computer system and operated asynchronously with respect to the other work stations of the assembly line.
第一クレーム	1. A method for transferring a workpiece within an asynchronously operating assembly line provided with at least first and second work stations comprising the steps of: (a) indicating at said first work station that said workpiece is ready for transfer from said first work station to said second work station; (b) indicating when said second work station is prepared to receive said workpiece; c assuring said workpiece exits from said first work station responsive to said indications in steps (a) and (b); (d) preparing said first work station to receive another workpiece after assuring said workpiece exits from said first work station; and (e) repeating steps (a) through (d).
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