| Title of Invention | "A RAZOR BLADE UNIT" |
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| Abstract | A safety raser blade wut includes a hair pulling member located immediately in front of the cuttiag edge of t blade, the hair pulling member haiving slots thnrugh which the hair pass defined by a series of elements, . the edgcs of the elemems which define the slots being formed to notch the hairs as they pass ; through the slots, and trailin,g end portions of the elemenis beisg inctined to guide the hairs to follow a path for pulling the hairs from the skin just before they they cut through by the blade. |
| Full Text | We Claim: 1. A razor blade unit comprising at least one blade (6) with an elongate edge, a skin engagement surface for engaging the skin ahead of the blade edge during shaving, the skin engaging surface having slots (10) for hairs to pass through, the skin engaging surface being formed by a series of elements (9) between which the slots (10) are formed, characterised in that the elements (9) have slot edge profiles such that the slot edges (16) notch into the hairs as they pass through the slots (10), and in the direction towards the blade (6), the slot edge formations being inclined so as to guide the notched hairs to follow a path causing the extension of the hairs from the skin to be increased before the hairs are cut by the blade edge. 2. A blade unit as claimed in claim l, wherein the inclination of the edge formations is in the range of 30° to 70° to the skin engagement surface. 3. A blade unit as claimed in claim 2, wherein the inclination of the edge formations is in the range of 40° to 60° to the skin engagement surface. 4. A blade unit as claimed in claims l, 2 or 3, wherein the elements (9) have downwardly inclined parts (14) extending from the skin engaging surface defining parts in the direction towards the blade. 5. A blade unit as claimed in claim 4, wherein the width of the slots (10) tapers from the leading edge of the skin engagement surface to a minimum value less than the diameter of a hair (H), and the adjacent elements (9) are resiliently movable relative to each other substantially parallel to the plane of the skin engaging surface. 6. A blade unit as claimed in claims 4 or 5, wherein the slot sections defined between the inclined parts (14) are of substantially constant width. 7. A blade unit as claimed in any one of claims 4 to 6, wherein the elements (9) are provided by respective teeth of a comb-like member. 8. A blade unit as claimed in any one of claims 4 to 7, wherein the slot edge formations have edge portions (16) of the elements (9) having reduced thickness. 9. A blade unit as claimed in claim 8, wherein the reduced thickness edges (16) are formed by rebates on the undersides of the elements (9). 10. A blade unit as claimed in claim 9, wherein the rebates are etched surface portions. 11. A blade unit as claimed in claims 8, 9 or 10, wherein the edge thickness is not greater than 20 microns. 12. A blade unit as claimed in any one of claims l to 11, wherein the surface elements (9) are supported by respective springs. 13. A blade unit as claimed in claim 12, wherein the springs are torsion springs (12) connected to the elements (9) at the forward ends thereof. 14. A blade unit substantially as herein described with reference to and as illustrated in the accompanying drawings. |
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2089-DEL-1997-Correspodence Others-(29-06-2011).pdf
2089-del-1997-correspondence-others.pdf
2089-del-1997-correspondence-po.pdf
2089-del-1997-description (complete).pdf
2089-DEL-1997-Form-27-(29-06-2011).pdf
2089-DEL-1997-Petition-137-(29-06-2011).pdf
2089-del-1997-petition-137.pdf
2089-del-1997-petition-138.pdf
| Patent Number | 215189 | |||||||||
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| Indian Patent Application Number | 2089/DEL/1997 | |||||||||
| PG Journal Number | 10/2008 | |||||||||
| Publication Date | 07-Mar-2008 | |||||||||
| Grant Date | 21-Feb-2008 | |||||||||
| Date of Filing | 28-Jul-1997 | |||||||||
| Name of Patentee | THE GILLETTE COMPANY | |||||||||
| Applicant Address | PRUDENTIAL TOWER BUILDING BOSTON, MASSACHUSETTS 02199, U.S.A. | |||||||||
Inventors:
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| PCT International Classification Number | B26B 021/54 | |||||||||
| PCT International Application Number | N/A | |||||||||
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PCT Conventions:
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