Razor blade platform and razor cartridge using same
View Patent ↗The present invention is a razor blade carrier having a base with at least two stepped protrusion extending outwardly therefrom. The stepped protrusion define at least two landing positions that support a portion of the razor blade. The landing surfaces of the stepped protrusions cooperate to define at least two razor blade locations. The razor blade carrier is used in a razor cartridge.
1. A razor cartridge comprising:
a first cover defining an interior area, the first cover having a first end surface and a second end surface;
a razor blade platform having:
a base portion;
at least two projections extending from said base portion each defining at least a pair of approximately parallel spaced apart support surfaces; each of said support surfaces on one of said projections being approximately laterally aligned with a corresponding one of said support surfaces defined by the other of said projections;
at least two razor blades, each being carried by at least two of said laterally aligned support surfaces; and
two extensions that project outwardly from the base parallel to the blade edges and opposite side from each other, each extension having a distal end that terminates with a flange extending in a plane perpendicular to the extension;
wherein the razor blade platform, and the razor blades being carried on the razor blade platform, are within the interior area of the first cover, and are coupled to the first cover such that the extensions extend outward from the first and second end surfaces of the first cover and at least a portion of each first and second end surfaces are located between the flanges and
wherein, when the first cover is adjacent the razor blade platform, said razor blade platform is coupled to said first cover such that said opening is positioned over said razor blades so that at least a portion of cutting edges defined thereby are exposed.
2. A razor cartridge as defined by claim 1 wherein said razor blade platform is unitary.
3. A razor cartridge as defined by claim 2 wherein said razor blade platform is a single molded piece of polymeric material.
4. A razor cartridge as defined by claim 1 further comprising a wire wrapped around said razor cartridge and extending over said portions of said cutting edged that are exposed, to minimize the tendency for skin to extrude between successive cutting edges during a shaving operation.
5. A razor cartridge as defined by claim 1 further comprising: a second cover coupled to said first cover; and wherein said razor blade platform is located between said first and second covers.
6. A razor cartridge as defined by claim 5 , wherein said second cover defines at least one aperture to allow shaving debris to be washed therethrough during a shaving operation.
7. A razor cartridge as defined by claim 1 wherein: said projections are stepped and include an abutment surface extending between successive support surfaces; and wherein each of said razor blades define a rear surface approximately opposite and approximately parallel to said cutting edge; and said rear surface engages said abutment surface thereby aligning each razor blade relative to the next successive razor blade and to said blade platform.
8. A razor cartridge as defined by claim 1 wherein: each of said razor blades are adhered to at least one of said support surfaces.
9. A razor cartridge as defined by claim 1 wherein: said blade platform having said razor blades coupled thereto is movable relative to said first cover; and wherein said razor cartridge further includes biasing means for urging said blade platform toward said opening in response to an externally applied force.
10. A razor cartridge as defined by claim 9 wherein said biasing means is a spring in engagement with at least one of said first and second covers and in biasing communication with said blade platform.