California Injection Molding Company, Inc.

Coast Foundry & Mfg. Co.

Russell T Gilbert

Irwin B Pfau

Armand E Antunez, Jr

An adjustable riser for a toilet tank is formed of a pair of mutually telescoped members slidably sealed to each other and readily locked in any one of a selected number of longitudinally adjusted positions by means of a number of tapered fingers having projections that are pressed into one of a series of grooves in the inner member by a threaded lock nut.

Adjustable ball cock riser

Thermometer probe covers having an extremely thin wall integral tip for enhanced heat transfer are injection molded by unique mold core construction and venting configuration. A tungsten carbide core minimizes core deflection to maintain improved concentricity of core and cavity. Maintainance of concentricity in quantity production apparatus is improved by a combination of relatively loose cantilevered mounting of an end of the core together with a press fit locking of the core upon closing of the mold. Venting of cavity gas during injection of mold material is precisely controlled through symmetrically distributed vent orifices in both the core and the female mold part. Core venting is controlled by a plurality of orifices and a manifold provided by a water cooled core vent pin within a bore of the core.

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Newport Beach, CA, United States of America

Russell T Gilbert