Patent ID: 7325327
Filing Date: 2008-02-05
Classification: G01D,G01P

Abstract:
1. An apparatus for measuring the distance traveled along an arcuate path by a movable object, said apparatus comprising: a member movable along a fixed arcuate path to a position along-said path corresponding to the relative position of the object; a plurality of spaced electrical contacts insulated from one another and positioned along at least one side of said path, said movable member contacting one of said plurality of contacts at the current position of said movable member along said arcuate path; data-storing means including a corresponding plurality of memory locations each of which stores preset, different distance-measurement data; means coupled to each of said plurality of contacts for respectively electrically connecting each of said plurality of contacts to each of said memory locations, each of said distance-measurement data stored respectively in said plurality of memory locations being uniquely associated with the relative location of said plurality of contacts along said path; output means connected to said data-storing means; and means connected to said plurality of contacts for applying a control signal to the one of said memory locations that is connected to the one of said plurality of contacts then in contact with said movable member, said control signal being effective to transfer the distance-measurement data stored in the said one of said memory locations to said output means; whereby said movable member is effective as it moves along said path to cause only the distance-measurement data stored in the said one of said memory locations to be applied to said output means.