Shaving razor using blade cartridge and blade cartridge therefor
AssigneePfizer Inc.
InventorDavid C. Coffin
Life of this patent
Estimating the term…
Abstract
In a shaving razor using a blade cartridge, the reusable assembly of the razor includes a guard element and the blade cartridge is designed with no parts located in front of the blade edge or edges, and when the blade cartridge is installed in the reusable assembly, the guard element of the reusable assembly becomes located in front of the blade edge or edges of the blade cartridge to cooperate with the blade edges in a customary way to stretch the skin and erect the beard hairs in advance of the cutting edge. The blade cartridge is also movable about two different pivot axes to improve the safety of the razor during use.
Claims22
A shaving razor comprising:
- a reusable assembly including an elongated guard element having a length dimension and which assembly is movable by a user's hand in a shaving direction generally perpendicular to the length dimension of the guard element, and
- a replaceable blade cartridge with at least one blade having an elongated cutting edge,
- said reusable assembly and blade cartridge having cooperating catch parts enabling the blade cartridge to be brought into and out of an installed condition relative to the reusable assembly with accompanying movement of the blade cartridge toward and away from the assembly in a direction generally perpendicular to said length dimension of the guard element, and
- said cartridge when in said installed condition having said cutting edge located parallel to and behind said guard element with respect to the shaving direction so that said guard element can engage and stretch the user's skin in advance of the cutting edge during a shaving operation.
A shaving razor comprising:
- a reusable assembly including a handle and a housing at an upper end of the handle, and
- a replaceable blade cartridge with at least one blade having an elongated cutting edge,
- said reusable assembly including an elongated sub-seat having a top surface and supported by the housing for pivotal movement relative to the housing about a sub-seat pivot axis,
- the sub-seat and the blade cartridge having cooperating catch parts enabling the blade cartridge to be brought into and out of an installed condition relative to the sub-seat, and
- said blade cartridge when in said installed condition relative to said sub-seat being pivotal relative to said sub-seat about a blade cartridge pivot axis parallel to and spaced from said sub-seat pivot axis.
A replaceable shaving cartridge for use as part of a shaving razor, said cartridge comprising:
- a plastic seat having a horizontal elongated seat body, and
- a horizontally elongated blade located on top of and fixed relative to the seat body and having a cutting edge extending along a length dimension of the blade, and
- the plastic seat having a connector protrusion extending downwardly from the seat body and having a lower portion with a convexly cylindrical outer surface arcuate about a cartridge lower portion axis parallel to and spaced downwardly from the blade cutting edge.
Dependencies are inferred from the claim text.