Shaving apparatus and shaving apparatus head
AssigneeHybrid Razor LTD
InventorsShoham Zak, Beni Nachon, Gil Perlberg, Tsafrir Ben-Ari
Life of this patent
Estimating the term…
Abstract
A motorized shaving apparatus and head therefor that cuts or trims hair via shearing. In one embodiment, the invention is a shaving apparatus head comprising: a body; a rotary cutter mounted to the body so as to be rotatable about a rotational axis, the rotary cutter comprising cutting edges that collectively define a reference cylinder about the rotational axis; and a blade mounted to the body so as to extend along a first reference plane that intersects the reference cylinder, the blade positioned so that a user's hairs are sheared between a cutting edge of the blade and the cutting edges of the rotary cutter when the rotary cutter is rotating about the rotational axis.
Claims15
A shaving apparatus comprising:
- a handle;
- a head coupled to the handle and having a working surface, the working surface comprising a fixed blade having a cutting edge;
- a power source;
- a rotary cutter having cutting edges disposed within the head, the cutting edges of the rotary cutter positioned adjacent the cutting edge of the fixed blade so that a user's hairs are sheared between the cutting edge of the fixed blade and the cutting edges of the rotary cutter when the rotary cutter is rotating;
- a motor operably coupled to the power source and the rotary cutter to rotate the rotary cutter about a rotational axis;
- and
- wherein the rotary cutter has a tangential velocity Vt greater than or equal to 300 mm/sec.
A shaving apparatus comprising:
- a handle;
- a head coupled to the handle and having a working surface, the working surface comprising a fixed blade having a cutting edge;
- a power source;
- a rotary cutter having cutting edges disposed within the head, the cutting edges collectively defining a reference cylinder having a radius r, the cutting edges of the rotary cutter positioned adjacent the cutting edge of the fixed blade so that a user's hairs are sheared between the cutting edge of the fixed blade and the cutting edges of the rotary cutter when the rotary cutter is rotating;
- a motor operably coupled to the power source and the rotary cutter to rotate the rotary cutter about a rotational axis;
- and
- wherein a number of revolutions of the rotary cutter per minute RPM is determined by the following formula:
- RPM≥12000/(2*Π*r).
A method of shaving comprising:
- providing a shaving apparatus comprising:
- a power source;
- a head having a working surface comprising a fixed blade having a cutting edge;
- a rotary cutter having cutting edges disposed within the head;
- and
- a motor operably coupled to the power source and the rotary cutter to rotate the rotary cutter about a rotational axis at a tangential velocity;
- positioning the working surface of the head against a surface to be shaved;
- moving the working surface of the head along the surface to be shaved at a linear velocity;
- and
- wherein the tangential velocity of the rotary cutter is greater than the linear velocity at which the working surface is moved along the surface to be shaved.
Dependencies are inferred from the claim text.