Patents by Inventor Marvin E. Walker

Marvin E. Walker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4115088
    Abstract: An applicator is disclosed for applying binder and/or size to glass filaments. The applicator is designed to both apply the binder and/or size to the filaments and gather the filaments into a unified strand. Due to its unique design, the applicator directs the moving strand in a direction such that the air flowing downwardly with the filaments as they are formed expels binder and/or size from the filaments and the applicator recovers this material for recirculation. This is accomplished without the need to divert the air flowing downwardly with the filaments from its normal path and without the use of any external deflector shields or other means for diverting airflow.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: September 19, 1978
    Assignee: PPG Industries, Inc.
    Inventor: Marvin E. Walker