1
Hurst George S: Electrographic sensor for determining planar coordinates. Elographics Incorporated, Skinner Martin J, March 19, 1974: US3798370 (217 worldwide citation)

An electrographic sensor for determining planar coordinates with good resolution, e.g., about 0.1 mm, and an overall accuracy of about 0.4 mm. A rectangular single sheet of extremely uniform resistive material has a row of small electrodes arranged along each edge with discrete resistors connected b ...


2
Hurst George S, Parks James E: Electrical sensor of plane coordinates. The University of Kentucky Research Foundation, May 9, 1972: US3662105 (217 worldwide citation)

An inexpensive electrical sensor of plane coordinates employs juxtaposed sheets of conducting material having electrical equipotential lines extending across each sheet and arranged normal to each other. A probe upon touching each sheet at a selected intersection of the equipotential lines causes se ...


3
Hurst George S, Colwell Jr William C: Discriminating contact sensor. Elographics, Skinner Martin J, October 7, 1975: US3911215 (118 worldwide citation)

A sensor construction is described for normally maintaining two juxtaposed electrical potential carrying sheets, at least one being flexible, separated from each other but permitting contact therebetween when an object of specified radius of curvature is pressed against the flexible sheet. The separ ...


4
Hurst George S, Colwell Jr William C: Sensor package for electrical sensing of plane coordinates and method of preparing the same. University of Kentucky Research Foundation, May 22, 1973: US3735023 (6 worldwide citation)

A sensor package for ready insertion in properly registered position upon, or for removal from, a cabinet employed in electrical sensing of plane coordinates, is constructed to provide accurate readings when pierced by a small manually operated cursor.A method for manufacturing the package including ...


5
Hurst George S, Thennard Norbert, Schneider Karl A: X-ray irradiation apparatus in which an x-ray source is energized upon the recording of irradiation dosage data. The University of Kentucky Research Foundation, July 25, 1972: US3679902 (5 worldwide citation)

Apparatus for use in examining or treating patients with X-radiation or the like requires the making of a permanent record of the radiation applied. The operation of the radiation source is controlled in dependence upon the making of the record and the to radiation, or dose exposure is limited to a ...


6
Hurst George S: Hand held probe for use in electrical sensing of plane coordinates. The Board of Trustees by the University of Kentucky, Sherwood William E, April 16, 1974: US3804983 (3 worldwide citation)

A probe with a puncturing, electrically conducting needle is constructed to enable the user, whether right or left handed, to position the needle rapidly and accurately at a selected coordinate of a sensor package.


7
Hurst George S, Wright Harvel A, Hopke Philip K: System for determining health risk due to radon progeny and uses thereof.. Consultec Scient, September 16, 1992: EP0503568-A2

A system for determining the health risk, due to alpha emitters attached to particles of various sizes, these alpha emitters being due to the level of radon, to persons within an environment where radon may be present. In one embodiment, a sample of air is passed through a filter element having a co ...


8
Hurst George S: Radon monitor and control system based upon alpha particle detection. Consultec Scientific, PITTS Robert E, December 13, 1990: WO/1990/015345

A system (10) for monitoring or controlling the level of radon in indoor air, based upon measuring alpha particles due to the decay of radon or its daughter atoms. In one embodiment, the alpha particle decay of radon itself is detected and analyzed to control a vent (74) in the heating and air condi ...


9
Hurst George S: Radon monitor and control system based upon alpha particle detection.. Consultec Scient, May 29, 1991: EP0428710-A1

A system (10) for monitoring or controlling the level of radon in indoor air, based upon measuring alpha particles due to the decay of radon or its daughter atoms. In one embodiment, the alpha particle decay of radon itself is detected and analyzed to control a vent (74) in the heating and air condi ...