The Gillette Company

Saint-Gobain Ceramics & Plastics, Inc.

Helge Zimmet

William Ralph Brown, Jr

Alexander Timothy Chenvainu

Alejandro Carlos Lee

Phillip Maurice Braun

Thomas Aurele Christman

William C Carson

Rainer Hans

Rudolf Majthan

Charles P Kiricoples

Kenneth E Johnson

Cardy Louis

Suresh Annavarapu

Joseph A Depuydt

Daniel C Portman

Karen Claire-Zimmet

Ronald R Duff

Philip M Braun

William R Brown

Joanna Q Deng

New methods are provided for manufacture ceramic resistive igniter elements that include injection molding of one or more layers of the formed element. Ceramic igniters also are provided that are obtainable from fabrication methods of the invention.

Ceramic igniters

Methods and devices are provided for forming filament bundles of long, continuous strands of filaments. The methods include bonding the long, continuous stands of filaments together so that they cannot move axially with respect to any other filament in the bundle. Methods of bonding include ultrasonic welding, freezing or applying adhesive.

Brush filament bundles and preparation thereof

Methods of manufacturing razor cartridges are provided. One method includes loading a support portion of a supported blade into an elongated blade slot defined by a core member, the core member being configured to define a portion of a molding cavity defining the shape of the cartridge housing; and delivering a resin to the molding cavity to form the housing and capture a portion of the blade in the resin. In another method, a plurality of razor cartridges are manufactured substantially simultaneously by (a) removably mounting each blade on a core member; (b) placing each core member in a molding cavity; and (c) delivering a resin to the molding cavities to form at least a portion of the cartridge housing and capture a portion of the blade in the resin. In other methods a flexible region is provided adjacent the blade ends by: (a) delivering a compliant material to the molding cavity to capture at least the ends of the blade; (b) placing the blade and molded compliant material in a second molding cavity defining the shape of the molded housing; and (c) delivering a resin to the second molding cavity to form the molded housing, or by (a) providing coring areas in the molding cavity beyond each of the blade ends, configured to provide a flexible region of plastic adjacent each blade end in the finished product; and (b) delivering a resin to the molding cavity. In some methods, the resin is delivered through a gate that is positioned so that a substantial portion of the resin flow goes by the blade ends before the molding cavity is filled.

Insert molding razor cartridges

Shaving systems are provided including an elongated blade and a plastic housing, the ends of the blade being captured in the plastic housing.

Shaving systems

Growing community of inventors

Waltham, MA, United States of America

Helge Zimmet