Method of molding a precision surface on an instrument table

Details Method of molding a precision surface on an instrument table Method of molding a precision surface on an instrument table

1988-02-19

1989-12-26

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

108 50, 264219, 264256, 264259, B29C 3910

Patent

active

048896764

ABSTRACT:
An instrument table having two features is disclosed. The first is a stable instrument bench that is constructed of sections of precast reinforced concrete. Each of these sections are then moisture sealed with a plastic coat or paint, then assembled using epoxy and bolts. The second element of the present invention is the replication of a precision surface on the table portion of an instrument bench. The replication of the precision surface entails the application of a dollop of plastic to the selected portions of the instrument table, lowering a jig having a portion of the underside thereof machined or ground to the selected specifications of the surface to be replicated onto the instrument table thereonto, supporting the jig a selected distance above the surface of the instrument table to push out the plastic into a pad of a thickness that is equivalent to the distance above the table at which the jig is supported, and removing the jig after the plastic is cured thus leaving behind the plastic pad that has thereon a precision surface that replicates the machined or ground surface on the underside of the jig.

REFERENCES:
patent: 855633 (1907-06-01), Herring
patent: 2305346 (1942-12-01), Hopfield
patent: 2486235 (1949-10-01), Watt
patent: 3933962 (1976-01-01), Meier
patent: 4770836 (1988-09-01), Vetter et al.

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