Patents by Inventor C. Edward Butlin

C. Edward Butlin 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).

  • Process for insert molding wet-shaving razor unit and unit made therefrom
    Patent number: 5318429
    Abstract: The present invention is a wet-shaving unit and a process for making same by injection molding. Additionally, the present invention provides an apparatus for molding the wet-shaving razor unit. The present invention is adaptable for addition to conventional razor blade manufacturing methods and existing manufacturing apparatus and facilities. Moreover, the present process results in a product which significantly reduces or eliminates entirely undesirable blade distortion and vibration.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: June 7, 1994
    Assignee: Warner-Lambert Company
    Inventors: C. Edward Butlin, deceased, Edward S. Butlin, William T. Conrad, Jr.
  • Process for insert molding wet-shaving razor unit
    Patent number: 5141694
    Abstract: The present invention is a wet-shaving unit and a process for making same by injection molding. The present invention is adaptable for addition to conventional razor blade manufacturing methods and existing manufacturing apparatus and facilities. Moreover, the present process results in a product which significantly reduces or eliminates entirely undesirable blade distortion and vibration.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: August 25, 1992
    Assignee: Warner-Lambert Company
    Inventors: C. Edward Butlin, Edward S. Butlin, William T. Conrad, Jr.
  • Process for insert molding disposable razor
    Patent number: 5104605
    Abstract: According to this invention, a disposable razor or razor cartridge is formed by molding, as a single unit, a blade covering means and blade support means by supporting the blade by a trident-shaped supporting member butting the blade with the tips of the support member to coincide with an opening formed during molding on either side of the blade support means and a centrally positioned sleeve having an opening adjacent to the blade.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: April 14, 1992
    Assignee: Warner-Lambert Company
    Inventors: C. Edward Butlin, William T. Conrad, Jr.
  • Process for insert molding disposable razor
    Patent number: 5053178
    Abstract: According to this invention a disposable, moldable plastic razor is made by a single multi stage molding process. This is accomplished by molding a blade support around a single narrow blade and using the combination of blade support and blade as the basis for subsequently molding the other moldable plastic razor elements.In another aspect of this invention, a subassembly comprising blade support and blade is provided having certain defined spatial characteristics which provides the first "building block" for the assembled disposable razor.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: October 1, 1991
    Assignee: Warner-Lambert Company
    Inventors: C. Edward Butlin, William T. Conrad, Jr.