Clark N Fishel

42382629, Dec 9, 1980

Jul 26, 1978

5/928239

Clark W. Fishel - Allen TX

A63B 5102

156166

Method and apparatus for conditioning the surface of the strings of a racquet such as used in tennis and other racquet sports. The method comprises a first step of applying a first primer coat of adhesive to the strings in the central portion of the racquet by spraying it through a template. The first coat of adhesive is applied to both sides of the strings and after drying a second coat is applied thereto. A granular substance, such as white quartz fractured to the size of 1/50th of an inch having a general cubical-shape, is sprinkled over the second coat of adhesive while damp. After the abrasive settles in and dries, a final sealing layer of adhesive is sprayed over the quartz crystals and second coat. This process both coats and locks the strings together at the intersections to lengthen strike-life and also forms a rough frictional surface on the strings to provide better ball control and create a better spin on the ball when hit.

44944420, Jan 22, 1985

Mar 30, 1982

6/363569

Clark N. Fishel - Austin TX

F01B 704

91181

A valving mechanism for use in machines such as internal combustion engines, steam engines, gas compression engines or air compressors. The mechanism employs a piston valve reciprocating within a cylindrical chamber under the direct action of cam surfaces carried upon a gear-driven flywheel. The cylindrical valve chamber carries a plurality of spaced apart ports, which are interconnected with the cylinder of the machine and with intake and exhaust systems. The machine has a piston reciprocated within the cylinder by means of a crank shaft which carries a crank shaft gear which interconnects with and drives the flywheel gear. One side of the flywheel gear carries cam surfaces which move the piston valve between the several positions required during the compression and exhaust and intake cycles of the machine. The valve chamber is mounted, transversed to the cylinder and in parallel with the crank shaft. With this arrangement of valving mechanism, the machine can be made very compact and simplified in numbers of operative elements while the unique piston valving provides improved valve timing and volumetric efficiency for the machine.