Patents Assigned to Safety Razor Company
  • Patent number: 6266884
    Abstract: A blade cartridge including three or more blades fixed between a platform member and a cap member. The present invention provides improved triple blade geometry where five contact surfaces with the skin are considered, including the edges of each of the blades, a skin contacting surface on the guard member and a skin contacting surface on the cap member. The five contacting surfaces are oriented at an equal distance from a common axis in order to ensure that the shaving forces normal to the contacting surfaces are shared by all of the contacting surfaces. The arrangement of the present invention provides optimal blade geometry, thereby producing a close and comfortable shave. Additionally, the blades of the present invention are movable to a less aggressive position in response to applied shaving forces.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: July 31, 2001
    Assignee: American Safety Razor Company
    Inventor: Frank Prochaska
  • Patent number: 6131287
    Abstract: In order to improve adhesion between the skin and a razor guard provided at the leading edge of a razor cartridge, the guard is provided with a large number of small concavities. These are preferably, but not to limited to hemispherically shaped concavities and are discrete and thus isolated from one another. These concavities can act as suction cups that increase the adhesion between the skin and the guard and thus tension the skin as the razor is drawn thereover. These concavities or dimples can also contain a reserve of shaving preparation for release on multiple passes over the same area.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: October 17, 2000
    Assignee: American Safety Razor Company
    Inventors: Frank H. Prochaska, John P. McAllister
  • Patent number: 6026575
    Abstract: A utility knife handle including a first body, or first shell, adjustably mated to a second body, or second shell, to form a blade holding portion and a blade storing portion. The first and second bodies have mating beveled surfaces adapted to align the first body with the second body when they are joined. In the preferred embodiment the first body is connected to the second body by a control knob adapted to allow for linear and pivotal adjustment between the first and second bodies. The utility knife handle is adjustable between an open position in which the holding portion and the storing portion allow the removal of any blades therein, an intermediate position in which the holding portion prevents removal of any blades therein and allows for positional adjustment of blades therein and the storing portion prevents the removal of any blades therein, and a closed position in which the holding portion prevents movement of any blades therein and the storing portion prevents the removal of any blades therein.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: February 22, 2000
    Assignee: American Safety Razor Company
    Inventor: Jeffrey W. Wonderley
  • Patent number: 5903978
    Abstract: A razor caddy receives a razor handle suitable for supporting a razor cartridge. The top and bottom handle surfaces have a continuous index finger profile when gripped on the top surface of the razor handle. The razor handle has a widened portion proximate to a proximate end, and side portions of the razor handle form a concave profile between the proximate end and the distal end. The side portions also form a widened portion at the distal end. The index finger profile of the razor handle defines a detail and a normal shaving position structure in combination with the handle top and bottom surface. First and second elastomeric gripping portions are each positioned on the bottom of the handle. The detail shaving position is achieved by the first gripping portion having a defined thumb engaging area proximate to the proximate end, with the elastomeric material defining correct thumb placement. The second gripping area is positioned near the distal end of the handle.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: May 18, 1999
    Assignee: American Safety Razor Company
    Inventors: Frank H. Prochaska, Jeffrey W. Wonderley
  • Patent number: 5674234
    Abstract: A flexible surgical razor for removing organic tissue, such as lesions, moles, corns and the like, at or below the skin's surface. The surgical razor utilizes a flexible blade with a well-honed front edge and left and right gripping extensions formed attached to the left and right side edges of the blade, respectively. Each gripping extension includes an inner segment extending in the same plane as the blade, a middle segment extending at an upward angle away from the plane of the blade, and an exterior segment, with exterior gripping edges, extending at an intersecting angle with the middle segment. The gripping edges include a plurality of teeth in rows asymmetrically angled to the plane of the flexible blade for full and complete control of blade flexing. A flexible sheath is added to regulate the shape and extent of the blade's curvature. The user applies inward finger pressure to both gripping extensions simultaneously which bends the flexible blade in a curved fashion.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: October 7, 1997
    Assignee: American Safety Razor Company
    Inventors: Gregory F. McCool, Jeffrey W. Wonderley, Robert J. Segal
  • Patent number: D436801
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: January 30, 2001
    Assignee: American Safety Razor Company
    Inventor: Jeffrey W. Wonderley
  • Patent number: D449709
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: October 23, 2001
    Assignee: American Safety Razor Company
    Inventor: Jeffrey Raymond Arey
  • Patent number: D389955
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: January 27, 1998
    Assignee: American Safety Razor Company
    Inventor: Jeffrey W. Wonderley
  • Patent number: D393929
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: April 28, 1998
    Assignee: American Safety Razor Company
    Inventor: Frank H. Prochaska
  • Patent number: D402367
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: December 8, 1998
    Assignee: American Safety Razor Company
    Inventors: Gregory F. McCool, Jeffrey W. Wonderley, Robert J. Segal
  • Patent number: D404486
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: January 19, 1999
    Assignee: American Safety Razor Company
    Inventors: Gregory F. McCool, Jeffrey W. Wonderley, Robert J. Segal
  • Patent number: D409799
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: May 11, 1999
    Assignee: American Safety Razor Company
    Inventor: Frank H. Prochaska
  • Patent number: D414897
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: October 5, 1999
    Assignee: American Safety Razor Company
    Inventor: Frank H. Prochaska
  • Patent number: D415316
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: October 12, 1999
    Assignee: American Safety Razor Company
    Inventor: Frank H. Prochaska
  • Patent number: D416109
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: November 2, 1999
    Assignee: American Safety Razor Company
    Inventor: Jeffrey W. Wonderley
  • Patent number: D416647
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: November 16, 1999
    Assignee: American Safety Razor Company
    Inventor: Jeffrey W. Wonderley
  • Patent number: D419722
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: January 25, 2000
    Assignee: American Safety Razor Company
    Inventor: Frank H. Prochaska
  • Patent number: D428532
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: July 18, 2000
    Assignee: American Safety Razor Company
    Inventor: Frank H. Prochaska
  • Patent number: D430487
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: September 5, 2000
    Assignee: American Safety Razor Company
    Inventor: Frank H. Prochaska
  • Patent number: D431680
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: October 3, 2000
    Assignee: American Safety Razor Company
    Inventor: Steve Wagstaff