Patents by Inventor Evan N. Chen

Evan N. Chen 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: 5689883
    Abstract: A shaving implement, such as a disposable cartridge or razor, comprises a shaving head which includes a skin-contacting element, in the form of a plurality of sections of flexible ridges. The ridges in each section are oriented alternately at positive and negative angles relative to the blade, in a herringbone pattern, and define flow-through recesses. Preferably, a ridge from each section is joined together with a ridge from an adjoining section, to form a chevron-shaped node between sections. When shaving, adjacent sections push areas of the skin in different directions, while the flow-through channels retain a layer of lubricating material on the skin, so that the cartridge provides a smooth, comfortable shave.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: November 25, 1997
    Assignee: Warner-Lambert Company
    Inventors: Ernest A. Ortiz, Evan N. Chen
  • Patent number: 5377409
    Abstract: A cleaning mechanism for a flexible, twin-blade, wet-shaving unit designed to remove the debris that becomes lodged between the blades during shaving. The cleaning mechanism may be employed with a flexible razor units having a "slim" configuration and a centrally-fixed securing post extending through the unit. The cleaning mechanism includes an ejector bar operable between an advanced position and a retracted position and a pair of actuation return members for biasing the ejector bar to the retracted position.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: January 3, 1995
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 5182858
    Abstract: A razor mechanism particularly suited for use with a flexible cartridge having at least one attachment member moveable in a direction substantially perpendicular to the longitudinal axis of the razor mechanism in response to the flexing of the razor cartridge during shaving.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: February 2, 1993
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 5157834
    Abstract: A razor mechanism particularly suited for use with a flexible cartridge having at least one attachment member moveable in a direction toward the longitudinal axis of the razor mechanism in response to the flexing of the razor cartridge during shaving and a cartridge support disposed in contact with the cartridge for assisting the cartridge in returning to a substantially linear configuration.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: October 27, 1992
    Assignee: Warner-Lambert Company
    Inventors: Evan N. Chen, Frank A. Ferraro
  • Patent number: 5107590
    Abstract: A razor handle having a rigid core, and preferably a moldable resilient cover, adapted for attachment to a separately formed handle head. The rigid core of the razor handle in the present invention advantageously extends upwardly into the handle head. According to one preferred embodiment of the present invention, the rigid core is formed, at least in part, of a metal. The covering layer, because of its flexibility, compressibility and initial deformability, provides a comfortable secure surface for the razor user. The resilient cover provides a limit for compressibility as well as a compressive resilience desired by many users.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: April 28, 1992
    Assignee: Warner-Lambert Company
    Inventors: Charles J. Burout, III, Frank A. Ferraro, Evan N. Chen
  • Patent number: 5044077
    Abstract: A razor mechanism particularly suited for use with a flexible cartridge having at least one attachment member freely moveable in a direction substantially toward the longitudinal axis of the razor mechanism in response to the flexing of the razor cartridge during shaving.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: September 3, 1991
    Assignee: Warner-Lambert Company
    Inventors: Frank A. Ferraro, Evan N. Chen
  • Patent number: 5003694
    Abstract: A flexible razor head is provided which features a flexible cap and seat. Corrugations, having portions of different widths, present in the seat enhance the ability of the seat to lengthen in response to shaving forces.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: April 2, 1991
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 4976028
    Abstract: According to this invention a flexible razor head is provided which features a flexible cap and blade support portion with the blade support portion featuring a segmented guard bar with the spaces separating the segment correlating to the spaces or areas of reduced thickness in the cap. Corrugations present in the blade support portions enable the blade support portion to lengthen in response to shaving forces.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: December 11, 1990
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 4854043
    Abstract: According to this invention a flexible razor head is provided which features a flexible cap and blade support portion with the blade support portion featuring a segmented guard bar with the spaces separating the segment correlating to the spaces or areas of reduced thickness in the cap. Corrugations present in the blade support portions enable the blade support portion to lengthen in response to shaving forces.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: August 8, 1989
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 4554735
    Abstract: A one-piece plastic disposable razor having structure which insures safe and efficient blade geometry while lending itself to high-speed mass production methods.
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: November 26, 1985
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 4555030
    Abstract: A wall bracket device or rack for receiving, containing and stacking a plurality of disposable wet shaving razors where each razor is removable individually for use.
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: November 26, 1985
    Assignee: Warner-Lambert Company
    Inventors: David S. Byrne, Evan N. Chen
  • Patent number: 4454653
    Abstract: A barber-type razor of the class adapted to receive a new blade from a cooperating blade ejector device including a novel blade guide latch and used blade ejector device.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: June 19, 1984
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 4428116
    Abstract: A shaving instrument including an elongated support terminating in a yoke with an attached slide cooperating with the support to facilitate receiving and retaining a blade cartridge in pivotal and releasable fashion in the yoke.
    Type: Grant
    Filed: March 24, 1983
    Date of Patent: January 31, 1984
    Assignee: Warner-Lambert Company
    Inventors: Evan N. Chen, Frank A. Ferraro
  • Patent number: 4425705
    Abstract: A disposable razor having one or more blades or cutting elements with a permanently attached, slidable blade cover including actuating means manually operable to slide the cover from a first position in which the razor is inoperable and the cutting elements are shielded and protected from damage to a second position in which the cutting elements have proper exposure and the razor is operative.
    Type: Grant
    Filed: June 19, 1981
    Date of Patent: January 17, 1984
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: 4344227
    Abstract: An improved twin blade razor system having a unitary member positioned between the pair of blades for both spacing the blades and ejecting shaving debris from that space. The unitary member, which may conveniently be of injection molded plastic, includes a spacer portion, an ejector portion, and biasing apparatus connecting the ejector portion and the spacer portion for biasing the ejector portion to a normally retracted position relative to the blades and spacer. The ejector portion is manually displaceable to an advanced ejecting position. The biasing portion may be one or more beam springs connected and configured to reduce distortion and/or stressing of the relatively moving portions of the member during actuation.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: August 17, 1982
    Assignee: Warner-Lambert Company
    Inventors: Evan N. Chen, James S. Emmett, Frank A. Ferraro, Anthony J. Peleckis
  • Patent number: 4294010
    Abstract: An electrically-powered, rotary razor is provided for releasably mounting and driving a blade cartridge generally of the safety razor type. The razor delivers a close wet shave with the omnidirectional cutting characteristics of a rotary dry-type shaver.
    Type: Grant
    Filed: May 23, 1980
    Date of Patent: October 13, 1981
    Assignee: Warner-Lambert Company
    Inventors: Evan N. Chen, Frank A. Ferraro
  • Patent number: D327336
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: June 23, 1992
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: D327550
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: June 30, 1992
    Assignee: Warner-Lambert Company
    Inventors: Evan N. Chen, Frank A. Ferraro, David S. Byrne
  • Patent number: D329105
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: September 1, 1992
    Assignee: Warner-Lambert Company
    Inventor: Evan N. Chen
  • Patent number: D329922
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: September 29, 1992
    Assignee: Warner-Lambert Company
    Inventors: Evan N. Chen, Frank A. Ferraro