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:
Oct. 10, 1989
Filed:
Dec. 21, 1987
Applicant:
Inventor:
Joseph N Epel, Southfield, MI (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264257 ; 264314 ; 2643287 ; 249 65 ; 249 82 ; 249117 ; 4251291 ; 425389 ; 4254051 ; 425417 ; 425542 ;
Abstract
A method and apparatus are disclosed for the reduction of mold cycle time. A deflatable member is positioned flush with the surface of a mold in an opening defined downwardly therein. Prior to flow of a resin or other hardenable liquid within the mold, the deflatable member is deflated so as to define a resin flow channel across selected portions of the mold surface. Prior to hardening of the hardenable liquid within the mold, the deflatable member is inflated so as to become flush with the surface of the mold so as to yield an article of manufacture having a relatively planar surface.