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US 6,308,416 B1Granted
Surface conforming shaving razor and handle therefor
AssigneeThe Gillette Company
InventorsBrian J. Bosy, Alexander T. Chenvainu, Franco Lodato, David L. Pappas, Rajan Ramaswamy
Life of this patent
Estimating the term…
Abstract
A shaving razor including a handle and three blade units each connected to the handle by a respective mounting structure that provides a pivotal connection of the blade unit to the mounting structure about a pivot axis that is transverse to the cutting edge, and also provides controlled up and down movement of the blade unit thereby permitting each blade unit to conform to the contour of a surface being shaved. The handle has an index finger indent on a top surface, and thumb indent on the bottom surface, and is shaped to match the curvature of a user's hand.
Claims38
A shaving razor comprising
- a handle,
- first, second and third blade units that are mounted at one end of said handle, each said blade unit including a guard, at least one blade having a cutting edge, and a cap, and
- a mounting structure connecting each said blade unit to said handle in a predetermined position, said mounting structure providing a pivotal connection of said blade unit to said mounting structure about a pivot axis that is transverse to the cutting edge, and also providing up and down movement of said blade unit along a displacement direction that is transverse to a plane through the guard and the cap, thereby permitting each said blade unit to conform to the contour of a surface being shaved, said first, second and third blade units each having a width that is less than the entire width covered by all three blades,
- wherein said mounting structure for each said blade unit is independent of mounting structures for the other blade units, permitting each blade unit to pivot about a respective pivot axis and to be displaced along a respective displacement axis independent of the pivoting and displacement of the other blade units,
- wherein each said mounting structure includes a linkage with two elongated members extending from a proximal end member connected to said handle to a distal end member connected to said blade unit,
- wherein said linkage forms a parallelogram which includes said two elongated members and also includes
- a first side member connected between spaced apart proximal ends of said elongated members and to said proximal end member, and
- a second side member connected between spaced apart distal ends of said elongated members and to said distal end member,
- said elongated members being pivotally connected at each connection to the first side member and to the second side member.
6 more elements
A shaving razor comprising
- a handle
- first, second and third blade units that are mounted at one end of said handle, each said blade unit including a guard, at least one blade having a cutting edge, and a cap, and
- a mounting structure connecting each said blade unit to said handle in a predetermined position, said mounting structure providing a pivotal connection of said blade unit to said mounting structure about a pivot axis that is transverse to the cutting edge, and also providing up and down movement of said blade unit along a displacement direction that is transverse to a plane through the guard and the cap, thereby permitting each said blade unit to conform to the contour of a surface being shaved, said first, second and third blade units each having a width that is less than the entire width covered by all three blades,
- wherein the cutting edges of blades of said first and second units are generally aligned with each other and have a gap between them, and a third blade unit is offset with respect to said first and second blade units, with its blade overlapping said gap during all positions of said pivoting and up and down movement.
1 more element
A shaving razor comprising
- a handle,
- first, second and third blade units that are mounted at one end of said handle, each said blade unit including a guard, at least one blade having a cutting edge, and a cap, and
- a mounting structure connecting each said blade unit to said handle in a predetermined position, said mounting structure providing a pivotal connection of said blade unit to said mounting structure about a pivot axis that is transverse to the cutting edge, and also providing up and down movement of said blade unit along a displacement direction that is transverse to a plane through the guard and the cap, thereby permitting each said blade unit to conform to the contour of a surface being shaved, said first, second and third blade units each having a width that is less than the entire width covered by all three blades, said cutting edges of said blade units partially overlapping each other as to avoid gaps between blade units during shaving.
A shaving razor comprising
- a handle,
- a blade unit that is mounted at one end of said handle and includes a guard, at least one blade having a cutting edge, and a cap, and
- a parallelogram, four-bar linkage connecting said blade unit to said handle,
- said linkage being made of an integral plastic piece and including two elongated members, a proximal end member connected to said handle, and a distal end member connected to said blade unit, each said elongated member being pivotally connected via resilient first living hinges at respective ends to said proximal end member and said distal end member, said first living hinges providing up and down movement of said blade unit along a displacement axis that is transverse to a plane through the guard and the cap.
1 more element
Dependencies are inferred from the claim text.