Back to results
US 4,731,744 AGranted
Position sensor and system
AssigneeNeal Hare
InventorsJohn P. Harrell, Jr., Douglas L. Michalsky
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNeal Hare
InventorsJohn P. Harrell, Jr., Douglas L. Michalsky
Estimating the term…
A position sensor for a moving member of a mechanical device is disclosed. The sensor includes an optical sensing means such as solid-state image sensor and illuminating means such as a plurality of light-emitting diodes, stationarily mounted to face scribing marks provided on the moving member. The microprocessor controlled image sensor generates a digital signal representative of the scribing marks on the moving member. A cable is provided between the position sensor and a remote digital computer which applies control and command signals to the sensor and receives the digital signal representation of the moving member scribing marks. The image is presented on a CRT screen allowing a human being a remote visual image of the position of the moving member. The remote digital computer also processes the received digital signal from each of the moving members and generates an alarm if the movement is greater than a predetermined amount.
An indicator system for remotely sensing the relative position of a moving member to that of a mechanical apparatus of which it is a part comprising,
An indicator system for remotely sensing the relative position of individual moving members each of which is part of a plurality of subsea stationary mechanical devices comprising,
A position sensor for a moving member which is part of a mechanical device comprising,
Dependencies are inferred from the claim text.