The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1984
Filed:
Dec. 10, 1981
Applicant:
Inventors:
William F Dais, Washington, MI (US);
Antoni J Malarz, Warren, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222375 ; 417490 ;
Abstract
An injector is provided for injecting hardenable liquid polymer precursors from an accumulator into a mold in a reaction injection molding process. A specially adapted plunger is employed to eject the liquid precursor from an accumulator barrel. The plunger provides a constant fluid-flow relationship between the liquid precursor inlet and the accumulator barrel during its full stroke. The plunger structure prevents the introduction of air and substantially empties the accumulator on each molding cycle.