Murli L Hinduja

US Patent:

48753637, Oct 24, 1989

Filed:

Aug 4, 1988

Appl. No.:

7/228373

Inventors:

Murli Hinduja - Fremont OH
Mark L. Thompson - Fremont OH
John R. Spriggs - Fremont OH

Assignee:

Sterling Engineered Products Inc. - Maumee OH

International Classification:

G01N 1104

US Classification:

73 56

Abstract:

An apparatus and method for testing the flow characteristics of molding compounds includes upper and lower mold portions movable relative to one another. The lower mold portion has formed therein a central cavity and a channel extending therefrom with scribe marks formed on a bottom wall of the channel. The upper mold portion has a complimentary raised area for cooperation with the cavity and the channel to force molding compound placed in the cavity to flow down the channel providing an indication of the flow characteristics of the molding compound. Ejector pins positioned in the bottom of the cavity and the channel are actuated by an ejector pin plate which is coupled to the upper mold portion to eject the sample when the mold portions are separated.

US Patent:

54240174, Jun 13, 1995

Filed:

Apr 12, 1993

Appl. No.:

8/045907

Inventors:

Murli L. Hinduja - Fremont OH
James P. Drysdale - Clarkston MI

International Classification:

B29C 4514

US Classification:

264163

Abstract:

A method and apparatus for molding fiberglass reinforced plastic articles using a new flowable liquid molding compound includes placing a mat of fiberglass reinforcing material in a mold half while the molds are open, rapidly closing the mold halves until they reach a distance of approximately 2" from a fully closed position, injecting the liquid molding compound which has been maintained at a temperature in the range of 75. degree. to 77. degree. F. into the space between the mold halves while the mold halves continue to close at a slower rate of speed, completing the closing of the mold halves after said injection step to compression mold the molding compound into conformity with the mold cavity while trimming excess glass reinforcing material and heating the shaped molding compound to a temperature causing it to set.