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.
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.
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.
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
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