Patents by Inventor Earle Keirstead

Earle Keirstead 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).

  • Closure for a container
    Publication number: 20060092013
    Abstract: A closure for a container is disclosed. The closure includes a cap seal and an overcap removably fastened to the cap seal, where the overcap includes a decorated film fused into a top surface of the overcap.
    Type: Application
    Filed: October 6, 2005
    Publication date: May 4, 2006
    Applicant: West Pharmaceutical Services, Inc.
    Inventors: Garrett Hager, William Conard, Jon Huffer, Earle Keirstead, Eugene Polini
  • Method for making plastic overcaps using hot runner back-gated mold technology
    Publication number: 20050146080
    Abstract: The present invention is a method for making a plastic overcap using a mold tool stack. The mold tool stack has a core and a cavity plate forming a cavity therebetween. The core has a resin passageway therein with a gate in a top surface of the core. The gate has a valve proximate the top surface of the core to regulate resin flowing from the resin passageway and into the cavity. The steps of the mold method are as follows: the mold tool stack is closed to form the cavity; the valve is opened to allow resin to enter the cavity; the valve is closed; the resin is allowed to cool; and the mold tool stack is opened to allow removal of the plastic overcap from within the mold tool stack. The top side of the plastic overcap produced is blemish-free, facilitating placement of labels and other markings thereon.
    Type: Application
    Filed: March 1, 2005
    Publication date: July 7, 2005
    Inventors: Earle Keirstead, Fredrick McCleery, William Conard, Arthur Knight, William Hoover, Thomas Butler, David Onzik
  • Method for making plastic overcaps using hot runner back-gated mold technology
    Publication number: 20040119203
    Abstract: The present invention is a method for making a plastic overcap using a mold tool stack. The mold tool stack has a core and a cavity plate forming a cavity therebetween. The core has a resin passageway therein with a gate in a top surface of the core. The gate has a valve proximate the top surface of the core to regulate resin flowing from the resin passageway and into the cavity. The steps of the mold method are as follows: the mold tool stack is closed to form the cavity; the valve is opened to allow resin to enter the cavity; the valve is closed; the resin is allowed to cool; and the mold tool stack is opened to allow removal of the plastic overcap from within the mold tool stack. The top side of the plastic overcap produced is blemish-free, facilitating placement of labels and other markings thereon.
    Type: Application
    Filed: July 14, 2003
    Publication date: June 24, 2004
    Applicant: West Pharmaceutical Services, Inc.
    Inventors: Earle Keirstead, Fredrick S. McCleery, William A. Conard, Arthur G. Knight, William C. Hoover, Thomas C. Butler, David D. Onzik