Safety razors

Claim 2

A safety razor comprising a razor blade unit which is readily flexible, in response to forces encountered during normal use, about an axis parallel with a plane of a blade of said blade unit and extending substantially perpendicular to a cutting edge of said blade, a handle, and connecting means connecting said blade unit to said handle, said connecting means comprising slide means for mounting and guiding said blade unit for reciprocal movement relative to said handle in directions substantially perpendicular to said plane of said blade, said slide means comprising a post extending from an underside of said blade unit at the mid-length of said blade unit, and further connections to either side of said slide means cooperatively disposed on said handle and said blade unit, said further connections permitting movement of end portions of said blade unit relative to said handle in directions generally parallel to said blade cutting edge.

Claim 3

The safety razor according to claim 1, wherein said slide means comprises said post extending essentially perpendicular to said plane of said blade and received in a socket in said handle in which said post is slidably movable during a shaving operation.

Claim 4

The safety razor according to claim 2, wherein said post and said socket are of non-circular cross-section to prevent relative rotation therebetween.

Claim 5

The safety razor according to claim 3, wherein said further connections each comprise a pin mounted on said handle and disposed in a blade unit socket, said pin being adapted to slide sidewise in said socket in directions generally parallel with said blade edge, but constrained against substantial relative movement in directions perpendicular to said plane of said blade.

Claim 6

The safety razor according to claim 4, wherein said pins extend parallel with said axis and have rounded upper and lower edges to facilitate flexure of said blade unit about said axis.

Claim 7

A razor according to claim 4, wherein the said further connections are each set in from the ends of the blade unit and are spaced apart by a distance approximately one-third of the length of the unit.

Claim 8

A safety razor comprising a blade unit and a handle, said blade unit comprising blade means retained by support structure, said blade means and said support structure being flexible and adapted, during a shaving operation, to flex in directions perpendicular to a plane of said blade means, a post extending from an underside of said blade unit centrally of said blade unit, and pockets in said blade unit extending lengthwise of said blade unit, said pockets being disposed one each on opposite sides of said post, said handle comprising a grip portion and an upper portion, said upper portion having a socket centrally thereof with said post slidably disposed therein, and pins fixed to said upper portion and disposed each in one of said blade unit pockets and adapted for movement therein in directions generally parallel to a non-flexed cutting edge of said blade means, whereby said blade unit may flex in concave and convex directions relative to said plane of said blade means, and ends of said blade unit may move inwardly and outwardly in said directions generally parallel to said non-flexed cutting edge.

Claim 9

A safety razor comprising a blade unit and a handle, said blade unit comprising blade means retained by support structure, said blade means and said support structure being flexible and adapted, during a shaving operation, to flex in directions perpendicular to a plane of said blade means, a post extending from an underside of said blade unit centrally of said blade unit, and pockets in said blade unit extending lengthwise of said blade unit, said pockets being disposed one each on opposite sides of said post, said handle comprising a grip portion and an upper portion, said upper portion having a socket centrally thereof with said post slidably disposed therein, and pins fixed to said upper portion and disposed each in one of said blade unit pockets and adapted for movement therein in directions generally parallel to a non-flexed cutting edge of said blade means, whereby said blade unit may flex in concave and convex directions relative to said plane of said blade means, and ends of said blade unit may move inwardly and outwardly in said directions generally parallel to said non-flexed cutting edge.

Claim 10

The safety razor in accordance with claim 7 in which said handle socket is defined by a handle central portion, and said concave flexure of said blade unit is limited by abutment of said blade unit underside with an end of said handle central portion.

Claim 11

The safety razor in accordance with claim 7 in which said upper portion of said handle includes plate-like handle portions, each having one of said pins mounted thereon, and said convex flexure of said blade unit is limited by said undersurface of said blade unit abutting edges of said plate-like handle portions.

Claim 12

The safety razor in accordance with claim 9 in which end portions of said plate-like handle portions are configured so as to be engaged by said undersurface of said blade unit upon deflection of end portions of said blade unit through a determined distance.