1
Timothy W Kunz, Donald G Cole, Richard S Knape, Arthur N Krein: Direct acting hydraulic valve lifter with integral plunger. General Motors Corporation, Arthur N Krein, July 12, 1988: US04756282 (19 worldwide citation)

A direct acting hydraulic valve lifter of the type that is reciprocably journaled as in the cylinder head of an internal combustion engine so as to be engaged by a cam on an engine driven camshaft to control opening and closing movement of an associate valve. The lifter includes a follower body havi ...


2
Joseph A Rahm, Donald G Cole: Process for manufacturing titanium compounds using a reducing agent. NL, Gary M Nath, Eugene Striffler, September 8, 1981: US04288415 (11 worldwide citation)

A process is provided for the manufacture of titanium compounds and particularly titanium dioxide wherein excess titaniferous bearing material is reacted with dilute sulfuric acid having a concentration of between about 25% and about 60% by weight at a temperature below about 140.degree. C., and in ...


3
Donald G Cole: Door-actuated alarm switch. Koenig Senniger Powers and Leavitt, July 6, 1976: US03968337 (6 worldwide citation)

An alarm switch adapted to be mounted on the wall above a door on the side of the wall toward which the door swings open, having an electrically conductive arm adapted to be set in a position for actuation by the door, when the door swings, to swing inwardly and then upwardly into engagement with a ...


4
Joseph A Rahm, Donald G Cole: Process for manufacturing titanium dioxide. NL, Gary M Nath, Claude L Beaudoin, September 8, 1981: US04288417 (5 worldwide citation)

A process is provided for the manufacture of titanium dioxide pigment wherein excess ilmenite ore is reacted with dilute sulfuric acid having a concentration of between about 25% and about 60% by weight in the presence of an iron reductant, and in preferably at least two stages wherein the first sta ...


5
Donald G Cole, Achim Hartmann, Achim M Kulling, Hermann B Trub: Process for pelletizing and neutralizing solid mixtures of metal chlorides. NL, Gary M Nath, October 21, 1980: US04229399 (4 worldwide citation)

A process is provided wherein solid mixtures of metal chlorides of, for example, ferric chloride, ferrous chloride, vanadium chloride and chromium chloride are (1) mixed with an alkaline material such as, for example, calcium oxide, calcium hydroxide and calcium carbonate, followed (2) by adding wat ...


6
Donald G Cole: Alarm switch having resilient gripping structure for sensing unauthorized movement of a door. Silent Sentry, Koenig Senniger Powers and Leavitt, November 29, 1977: US04060704 (3 worldwide citation)

An alarm switch is mounted by means of a support for actuation by relative movement between the support and a member such as a door or window. Switches are carried by the support and an operating arm for the switches extends from the support and is adapted to be pulled a limited distance relative to ...