SAFETY RAZOR BLADE HOLDER

• US 3,667,122 A
• Filed: 05/12/1971
• Issued: 06/06/1972
• Est. Priority Date: 05/12/1971
• Status: Expired due to Term

• Current Assignee: Leonard J. Black
• Original Assignee: Leonard J. Black
• Inventors: Black, Leonard J.
• Primary Examiner(s): Custer, Jr., Granville Y.
• Assistant Examiner(s): Peters, J. C.
• Application Number:
  US05/142,792
• Time in Patent Office: 391 Days
• Field of Search: 30/162,293,332,333,335
• US Class Current: 30/286
• CPC Class Codes: B26B 29/02 Guards or sheaths for knives

Abstract

A safety razor blade holder comprising a longitudinally extending handle, a threaded stud carried by the handle, a guard member slidably mounted on the stud, a lock nut for clamping the guard member and handle together, a safety razor blade, and means for permitting the guard member to be positioned relative to the safety razor blade when such blade is in an operative position so as to expose or temporarily shield the edge of such blade and preventing movement of the guard member, even when the lock nut is slightly loosened, from allowing the edge of the blade to be exposed when such blade is in a second position.

Claims

1. In a safety razor blade holder including a longitudinally extending handle, a safety razor blade with a backing member, a guard member, and means for clamping said guard member and handle together, the provision of:

a transverse channel in said handle having a depth substantially equal to one-half the thickness of said backing member and being spaced in the forward edge of said handle a distance so that the edge of the razor blade is exposed when the backing member is received therein; and

a transverse channel in said guard member having a depth substantially equal to one-half the thickness of said backing member and a width no more than twice the width of said backing member, said guard member being slidably longitudinally movable relative to said handle and said razor blade when said clamping means is loosened so as to expose said blade edge when in the rearward position, and cover said blade edge when in the forward position, whereby said razor blade may be positioned with the backing member in said transverse channel so that the edge may be partially or fully exposed or shielded.

2. A safety razor blade holder for carrying a safety razor blade with a backing comprising:

a longitudinally extending handle with a channel having a depth substantially equal to one-half the thickness of said backing member and spaced from a forward edge of said handle a distance so that the edge of said razor blade is exposed when the backing member is received within the channel;

a guard member having a channel in registry with said backing member channel having a depth substantially equal to one-half the thickness of said backing member and a width approximately equal to twice the width of said backing member, said guard member being slidably movable relative to said handle and said razor blade mounted to said handle so as to expose the blade edge when in the rearward position and cover said blade edge when in the forward position;

a longitudinally extending recess in said handle and a pin projecting from said backing member into said recess for limiting the forward and rearward movement of said guard member relative to said handle; and

means to selectively prevent sliding of the guard member relative to the handle and the razor blade mounted therein whereby the edge of the razor blade may selectively be exposed or protected.

3. A safety razor blade holder comprising:

a longitudinally extending handle carrying a threaded stud;

a guard member having both length and width substantially equal to the width of said handle and an opening for receiving said stud;

means engaging said stud for clamping said guard member and said handle together;

a safety razor blade having a backing member;

said guard member having a laterally extending channel, said channel having a width greater than the width of said backing member;

said handle having a longitudinally extending channel and a laterally extending channel, said channels having a width substantially equal to the width of said backing member, said longitudinally extending channel being spaced a distance from the side edge of said handle so that when said safety blade is received therein the edge thereof is spaced inwardly from the side edge, saId laterally extending channel being spaced a distance from the forward edge of said handle so that when said safety blade is received therein the edge thereof extends beyond the forward edge; and

means carried by said guard member for releasably engaging said safety razor blade so that rotation of said guard member effects rotation of said safety razor blade from the exposed to the retracted position.

4. The safety razor blade holder of claim 3 wherein said guard member opening is elongated for permitting slidable movement thereof relative to said handle.

5. The safety razor blade holder of claim 1 wherein said guard member includes a pin disposed in one corner and projection from the inner face thereof and said handle includes an elongated recess for receiving said pin when said guard member is oriented for slidable longitudinal movement relative to said handle and a circular recess for receiving said pin when said guard member is oriented 90 degrees to said first mentioned orientation.

6. The safety razor blade holder of claim 1 wherein said means carried by said guard member for engaging said razor blade comprises at least one magnet.

7. In a safety razor blade holder including a longitudinally extending handle, a safety razor blade including a backing member, a guard member, and means for clamping said guard member and handle together, the provision of:

a transverse channel in said handle having a depth substantially equal to one-half the thickness of said backing member and spaced from the longitudinal edge of said handle a distance so that the edge of the razor blade is not exposed when received therein;

said guard member having a transverse channel having a depth substantially equal to one-half the thickness of said backing member and a width substantially equal to twice the width of said backing member;

said guard member being slidably longitudinally movable relative to said handle and to said razor blade when said means for clamping is loosened so as to expose said blade edge when in the rearward position and cover said edge when in the forward position;

means preventing slidable movement of said guard member relative to said handle in a direction normal to the longitudinal axis of said handle and permitting slidable movement of said guard member in a direction parallel to the longitudinal axis of said handle when said means for clamping is slightly loosened, said means comprising a pin projecting from the corner of the mating surface of said guard member and an elongated recess in said handle, parallel to the longitudinal axis of said handle, for receiving said pin when said guard member'"'"''"'"'s position with its transverse channel normal to the longitudinal axis of said handle, and a circular recess in said handle for receiving said pin when said guard member is positioned with its transverse channel parallel to the longitudinal axis of said handle, whereby said razor blade may be positioned with the backing member in said transverse channel so that the edge may be exposed or temporarily protected and may be positioned in said longitudinal channel so that the edge is firmly protected.

8. The provision of claim 7 wherein said guard member additionally comprises mganetic means for holding said safety razor blade.

9. The provision of claim 8 wherein said means for clamping said guard member and said handle together comprises a threaded stud carried by said handle and a lock nut threadedly received thereon.