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US 12,304,094 B2Granted
Shaving instrument
OwnerAndrew Sgarrainventor
Life of this patent
Estimating the term…
Abstract
In a shaving instrument having one or more blades, each with a single exposed cutting, each blade is clamped between clamping parts hinged to one another in a unitary molded blade clamp. Following insertion of the blade or blades, the blade clamp is inserted into an end of an elongated slot in a head attached to a handle. The slot is shaped to allow movement of the blade clamp only along the direction of its insertion. The blades are secured against sliding in the blade clamp by engagement with protrusions formed on interior surfaces of clamping parts. The blades can be replaced when worn, but the clamping elements can be reused.
Claims13
A shaving instrument comprising:
- a handle extending in a first direction;
- a head attached to the handle, said head having two ends, and extending from one of said ends to the other in a second direction transverse to said first direction, said head also having a slot with an elongated opening extending along said second direction and an end opening at least at one of said ends, said end opening being continuous with said elongated opening;
- a blade clamp removably receivable in said slot though said end opening, said blade clamp being molded from a polymeric material and having first and second parts hinged together at a hinge axis and rotatable toward and away from each other about said hinge axis;
- and
- a planar metal blade having a blade-surrounding edge, said edge including a sharpened cutting edge and being receivable between said first and second parts of the blade clamp with its sharpened cutting edge protruding from the blade clamp;
- wherein said blade clamp includes opposable clamping portions engageable respectively with portions of said metal blade on opposite sides thereof adjacent said cutting edge, when the first and second parts of the blade clamp are moved toward each other about said hinge axis, and at least one protrusion on one of said clamping portions, said protrusion being adapted to engage a part of said blade-surrounding edge and thereby prevent movement of the blade relative to the blade clamp in at least one direction parallel to the plane of the blade when said opposable clamping portions are engaged with said portions of said metal blade adjacent said cutting edge;
- wherein the shape of said slot is such that, when the blade clamp, with said blade received therein, is received in said slot, the engagement of the exterior of the blade clamp with the interior of said slot prevents movement of the blade clamp in all directions other than in said second direction;
- and
- wherein the position of said protrusion is such that, when said blade is in engagement with the protrusion, and the blade clamp, with the blade positioned therein, is received in said slot, portions of said head press the opposable clamping portions of the blade clamp against the blade and the cutting edge of said blade protrudes outward from said blade clamp and outward from the elongated opening of said slot.
6 more elements
A shaving instrument comprising:
- a handle extending in a first direction;
- a head attached to the handle, said head having two ends, and extending from one of said ends to the other in a second direction transverse to said first direction, said head having a slot with an elongated opening extending along said transverse direction and an end opening at least at one of said ends, said end opening being continuous with said elongated opening;
- a blade clamp removably receivable in said slot though said end opening, said blade clamp being molded from a polymeric material and having first and second parts hinged together at a hinge axis and rotatable toward and away from each other about said hinge axis;
- a planar metal blade having a blade-surrounding edge, said edge including a sharpened cutting edge, said blade being receivable between said first and second parts of the blade clamp with its sharpened cutting edge protruding from the blade clamp;
- wherein said blade clamp includes opposable clamping portions engageable with portions of said metal blade adjacent said cutting edge when the first and second parts of the blade clamp are moved toward each other about said hinge axis;
- wherein the size of said slot is such that portions of said head press the opposable clamping portions of the blade clamp against the blade when the blade clamp, with the blade positioned therein, is received in said slot, and such that the cutting edge of the blade protrudes outward from said elongated opening of said slot;
- and
- wherein the size of the blade clamp is such that a portion of the blade clamp extends along the exterior of said elongated opening of said slot when the blade clamp is received in said slot.
5 more elements
Dependencies are inferred from the claim text.