IP Library Granted Patent US 7,818,883
Granted Patent B2
US 7,818,883 · App. 12/177,754 · Granted Oct 26, 2010

Safety razor

Assignee: L.I.F.E. Support Technologies, LLC
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Quick Facts
Patent No.
US 7,818,883
App. No.
12/177,754
Granted
Oct 26, 2010
Kind
B2
Abstract

A disposable safety razor includes a blade housing and a blade disposed within the blade housing to expose a cutting edge suitable for shaving. The blade housing and the blade have complementary characteristics which result in destruction of the blade upon an attempt to remove the blade from within the blade housing. In this regard, the blade housing comprises a substantially rigid housing and the blade comprises a brittle ceramic blade. The safety razor further includes a handle attached to the blade housing. The handle is made from a pliable plastic material that forms an enclosure filled with a dispensable liquid.

Claims (29)

1. A safety razor, comprising:

a plastic blade housing;

a pliable plastic enclosure attached to and supportive of the blade housing during shaving; and

a ceramic blade disposed within the blade housing to expose a cutting edge suitable for shaving;

wherein the blade housing at least partially encases the external ends of the ceramic blade to non-removably lock the blade therein, and wherein simply twisting or bending the plastic blade housing, without breaking it, causes the ceramic blade to shatter.

2. The safety razor of claim 1 , wherein the blade housing comprises a substantially rigid housing.

3. The safety razor of claim 1 , wherein the ceramic blade comprises silicon carbide, silicon nitride, mullite, hafnia, yttria, zirconoia or alumina.

4. The safety razor of claim 1 , wherein the blade housing comprises a carriage extending away from the enclosure to optimize contact of the cutting edge with a shaving surface.

5. The safety razor of claim 1 , wherein the enclosure is filled with a dispensable liquid.

6. The safety razor of claim 5 , including a selectively removable stop providing access to the dispensable liquid within the enclosure.

7. The safety razor of claim 6 , wherein the liquid comprises a shaving gel, a shaving cream, a shaving oil, a lotion, an aftershave or a soap.

8. The safety razor of claim 1 , wherein the blade housing comprises a plastic material molded over the blade.

9. The safety razor of claim 1 , including a plurality of blades disposed within the blade housing.

10. A safety razor, comprising:

a substantially rigid plastic blade housing;

a pliable plastic enclosure attached to and supportive of the blade housing during shaving; and

a ceramic blade disposed within the blade housing to expose a cutting edge suitable for shaving, wherein the ceramic blade has a compressive strength, a flexural strength and a tensile strength less than the blade housing;

wherein the blade housing at least partially encases the external ends of the ceramic blade to non-removably lock the blade therein, and wherein simply twisting or bending the substantially rigid plastic blade housing, without breaking it, causes the ceramic blade to shatter.

11. The safety razor of claim 10 , wherein the blade housing comprises a carriage extending away from the enclosure to optimize contact of the cutting edge with a shaving surface.

12. The safety razor of claim 10 , wherein the blade housing comprises a plastic material molded over the ceramic blade.

13. The safety razor of claim 10 , wherein the ceramic blade comprises silicon carbide, silicon nitride, mullite, hafnia, yttria, zirconoia or alumina.

14. The safety razor of claim 13 , including a plurality of ceramic blades disposed within the blade housing.

15. The safety razor of claim 10 , wherein the enclosure includes a selectively removable stop providing access to a dispensable liquid within the enclosure, the liquid comprises a shaving gel, a shaving cream, a shaving oil, a lotion, an aftershave or a soap.

16. A safety razor, comprising:

a substantially rigid plastic blade housing molded over a plurality of ceramic blades to expose a cutting edge suitable for shaving; and

a pliable plastic enclosure attached to and supportive of the blade housing during shaving;

wherein the blade housing at least partially encases the external ends of the ceramic blades to non-removably lock the ceramic blades therein, and wherein simply twisting or bending the plastic blade housing, without breaking it, causes the ceramic blade to shatter.

17. The safety razor of claim 16 , wherein the enclosure includes a selectively removable stop providing access to a dispensable liquid within the enclosure, wherein the liquid comprises a shaving gel, a shaving cream, a shaving oil, a lotion, an aftershave or a soap.

18. The safety razor of claim 16 , wherein the blade housing comprises a carriage extending away from the enclosure to optimize contact of the cutting edge with a shaving surface and the ceramic blades comprise silicon carbide, silicon nitride, mullite, hafnia, yttria, zirconoia or alumina.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 23, 2014
From: L.I.F.E. SUPPORT TECHNOLOGIES, LLC
To: SADARI HOLDINGS, LLC
Reel/Frame 033798/0297 →
SECURITY INTEREST Recorded Sep 23, 2014
From: SADARI HOLDINGS, LLC
To: KELLY & KELLEY, LLP; KELLEY, SCOTT W.
Reel/Frame 033801/0243 →
INTELLECTUAL PROPERTY INCOME SPLITTING AGREEMENT Recorded Nov 10, 2010
From: LAX, SAMUEL
To: LAX, SAMUEL; RABIN, LOIS; KELLEY, SCOTT W.
Reel/Frame 025341/0046 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 10, 2010
From: L.I.F.E. SUPPORT TECHNOLOGIES, LLC
To: LAX, SAMUEL
Reel/Frame 025343/0678 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2008
From: LAX, SAMUEL
To: L.I.F.E. SUPPORT TECHNOLOGIES, LLC
Reel/Frame 021276/0692 →
Continuity (1)
Related Publication 20100018056A1 · Jan 28, 2010