Razor handle with a rotatable portion
First Claim
Patent Images
1. A razor comprising:
- a cartridge comprising a blade; and
a handle coupled to the cartridge by a blade cartridge connecting assembly such that the cartridge is configured to rotate about a first axis substantially parallel to the blade, the handle comprising;
a first end;
a second end opposite the first end; and
a rotatable portion coupled to the second end such that the rotatable portion is configured to rotate relative to the first end and about a second axis substantially perpendicular to the blade and the first axis, wherein the rotatable portion comprises a base and a retention system, the retention system with the second end is configured to apply a resistance torque upon the rotatable portion when the rotatable portion is rotated from an at rest position,wherein a portion of the rotatable portion between the first axis and the second axis defines a cartridge moment arm and the retention system has a static stiffness as determined by a Static Stiffness Method such that a ratio of the static stiffness to the moment arm is about 0.05 N/degree to about 1.2 N/degree.
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Abstract
A razor includes a cartridge having a blade, the cartridge configured to rotate about a first axis, and a handle coupled to the cartridge. The handle includes a first end, a second end opposite the first end, and a rotatable portion coupled to the second end such that the rotatable portion is configured to rotate relative to the first end and about a second axis. The rotatable portion includes a base and a retention system. The retention system is configured to apply a resistance torque upon the rotatable portion when the rotatable portion is rotated from an at rest position.
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Citations
18 Claims
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1. A razor comprising:
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a cartridge comprising a blade; and a handle coupled to the cartridge by a blade cartridge connecting assembly such that the cartridge is configured to rotate about a first axis substantially parallel to the blade, the handle comprising; a first end; a second end opposite the first end; and a rotatable portion coupled to the second end such that the rotatable portion is configured to rotate relative to the first end and about a second axis substantially perpendicular to the blade and the first axis, wherein the rotatable portion comprises a base and a retention system, the retention system with the second end is configured to apply a resistance torque upon the rotatable portion when the rotatable portion is rotated from an at rest position, wherein a portion of the rotatable portion between the first axis and the second axis defines a cartridge moment arm and the retention system has a static stiffness as determined by a Static Stiffness Method such that a ratio of the static stiffness to the moment arm is about 0.05 N/degree to about 1.2 N/degree. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A razor comprising:
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a cartridge comprising a blade; and a handle coupled to the cartridge by a blade cartridge connecting assembly such that the cartridge is configured to rotate about a first axis substantially parallel to the blade, the handle comprising; a first end; a second end opposite the first end; and a rotatable portion coupled to the second end such that the rotatable portion is configured to rotate relative to the first end and about a second axis substantially perpendicular to the blade and the first axis, wherein the rotatable portion comprises a base and a retention system and wherein the retention system with the second end is configured to apply a resistance torque upon the rotatable portion when the rotatable portion is rotated from an at rest position, wherein a portion of the rotatable portion between the first axis and the second axis defines a cartridge moment arm and the rotatable portion has a damping value as determined by a Pendulum Test Method such that a ratio of the damping value to the moment arm is about 0.0005 N*sec/degree to about 0.02 N*sec/degree and the retention system has a static stiffness as determined by a Static Stiffness Method such that a ratio of the static stiffness to the moment arm is about 0.05 N/degree to about 1.2 N/degree. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A razor comprising:
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a cartridge comprising a blade; and a handle coupled to the cartridge by a blade cartridge connecting assembly such that the cartridge is configured to rotate about a first axis substantially parallel to the blade, the handle comprising; a first end; a second end opposite the first end; and a rotatable portion coupled to the second end such that the rotatable portion is configured to rotate relative to the first end and about a second axis substantially perpendicular to the blade and the first axis, wherein the rotatable portion comprises a base and a retention system and wherein the retention system with the second end is configured to apply a resistance torque upon the rotatable portion when the rotatable portion is rotated from an at rest position, wherein a portion of the rotatable portion between the first axis and the second axis defines a cartridge moment arm and the retention system has a static stiffness as determined by a Static Stiffness Method such that a ratio of the static stiffness to the moment arm is about 0.05 N/degree to about 1.2 N/degree and a ratio of an inertia of the rotatable portion to the moment arm is about 0.013 kg-mm to about 0.067 kg-mm.
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Specification