Patent US5689883A successfully refreshed from Google Patents.
US5689883A
Expired / Lapsed
US
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Shaving implement
Assignee: Edgewell Personal Care Brands LLC
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Filing: 1995-05-08
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Granted: 1997-11-25
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Expires: 2015-05-08
Abstract
Abstract A shaving implement, such as a disposable cartridge or razor, comprises a shaving head which includes a skin-contacting element, in the form of a plurality of sections of flexible ridges. The ridges in each section are oriented alternately at positive and negative angles relative to the blade, in a herringbone pattern, and define flow-through recesses. Preferably, a ridge from each section is joined together with a ridge from an adjoining section, to form a chevron-shaped node between sections. When shaving, adjacent sections push areas of the skin in different directions, while the flow-through channels retain a layer of lubricating material on the skin, so that the cartridge provides a smooth, comfortable shave.
Inventors
- 👤 Ernest A. Ortiz
- 👤 Evan N. Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:58
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/4012; B26B21/4018; B26B21/4068
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
101 words
A shaving implement for moving in a normal shaving direction, comprising: at least one razor blade having a blade edge extending in a direction perpendicular to said shaving direction; a shaving head which secures said at least one razor blade; and said shaving head including a skin-contacting element having leading and trailing edges parallel to said blade edge, wherein said skin-contacting element includes a plurality of adjoining sections, each section comprising a plurality of rows of parallel, flexible skin-engaging ridges, and wherein ridges in adjoining sections extend alternately at positive and negative angles relative to the direction of said blade edge.
Claim 2
Dependent Claim
101 words
A shaving implement for moving in a normal shaving direction, comprising: at least one razor blade having a blade edge extending in a direction perpendicular to said shaving direction; a shaving head which secures said at least one razor blade; and said shaving head including a skin-contacting element having leading and trailing edges parallel to said blade edge, wherein said skin-contacting element includes a plurality of adjoining sections, each section comprising a plurality of rows of parallel, flexible skin-engaging ridges, and wherein ridges in adjoining sections extend alternately at positive and negative angles relative to the direction of said blade edge.
Claim 3
Dependent Claim
25 words
a shaving implement according to claim 1, wherein said ridges define a plurality of flow-through channels extending from said leading edge to said trailing edge.
Claim 4
Dependent Claim
16 words
A shaving implement according to claim 1, wherein said ridges are made of a flexible material.
Claim 5
Dependent Claim
38 words
A shaving implement according to claim 1, wherein said skin-contacting element includes a plurality of adjoining sections, and wherein ridges in adjoining sections extend alternately at positive and negative angles relative to the direction of said blade edge.
Claim 6
Dependent Claim
33 words
A shaving implement according to claim 4, wherein at least one ridge from each section is joined together with a ridge from an adjoining section, to form a chevron-shaped node between adjoining sections.
Claim 7
Dependent Claim
51 words
A shaving implement according to claim 1, wherein at least one ridge from each section is joined together with a ridge from an adjoining section, to form a chevron-shaped node between adjoining sections, the chevron shaped nodes in successive adjoining sections across the skin-contacting element being oriented alternately in opposite directions.
Claim 8
Dependent Claim
17 words
A shaving implement according to claim 6, wherein adjoining sections are a mirror image of one another.
Claim 9
Dependent Claim
27 words
A shaving implement according to claim 7, wherein said ridges have a skin contacting surface such that different segments push the skin in different directions when shaving.
Claim 10
Dependent Claim
23 words
A shaving implement according to claim 1, wherein said ridges have a height "h", and wherein rows in each section have different heights.
Claim 11
Dependent Claim
33 words
A shaving implement according to claim 1, wherein the alternating positive and negative angle of said ridges, relative to the direction of said blade edge, is in the range of 10° to 50°.
Claim 12
Dependent Claim
20 words
A shaving implement according to claim 10, wherein the values of the alternating positive and negative angles are the same.
Claim 13
Dependent Claim
18 words
A shaving implement according to claim 10, wherein ridges in adjoining sections lie alternately at angles of ±20°.
Claim 14
Dependent Claim
25 words
A shaving implement according to claim 1, further comprising a guard portion lying forward of said blade edge, said guard portion including said skin-contacting element.
Claim 15
Dependent Claim
37 words
A shaving implement according to claim 13, wherein said skin-contacting element includes a base, and wherein said ridges extend outwardly from said base at an angle generally perpendicular to said blade and to the direction of shaving.
Claim 16
Dependent Claim
36 words
A shaving implement according to claim 13, wherein said skin-contacting element includes a base, and wherein said ridges extend outwardly from said base at an angle generally parallel to said blade, in the direction of shaving.
Claim 17
Dependent Claim
31 words
A shaving implement according to claim 13, wherein said shaving head is flexible in a direction perpendicular to said blade, and wherein said skin-contacting element extends continuously across said guard portion.
Claim 18
Dependent Claim
39 words
A shaving implement according to claim 13, wherein said guard portion includes a plurality of individual guard segments, and wherein said skin-contacting element is in the form of a plurality of skin-contacting segments associated with the respective guard segments.
Claim 19
Dependent Claim
35 words
A shaving implement according to claim 1, wherein said ridges have a height between 0.56 and 0.71 mm, an aspect ratio (height/base thickness) between 1.5 and 1.9, and a pitch between 0.254 and 0.51 mm.
Claim 20
Dependent Claim
25 words
A shaving implement according to claim 18, wherein said ridges are formed of a material having a durometer (Shore A scale) between 30 and 90.
Claim 21
Dependent Claim
48 words
A shaving implement according to claim 18, wherein said ridges have a height of 0.635 mm and a pitch of 0.51 mm, taper from a base thickness of 0.38 mm to a thickness at the tip of 0.13 mm, and have a spacing of 0.013 mm between rows.
Claim 22
Dependent Claim
24 words
A shaving implement according to claim 20, wherein said ridges are formed of a material having a durometer of approximately 45 Shore A scale.
Claim 23
Dependent Claim
27 words
A shaving implement according to claim 1, wherein said shaving head further comprises a shaving aid for laying down a lubricating film when used for wet shaving.
Claim 24
Dependent Claim
22 words
A shaving implement according to claim 1, wherein said ridges extend parallel to one another and substantially perpendicular to said blade edge.
Claim 25
Dependent Claim
104 words
A shaving implement comprising: at least one razor blade having a blade edge extending in a direction; a shaving head which secures said at least one razor blade, said shaving head being flexible in a direction perpendicular to said razor blade; and said shaving head including a skin-contacting element having leading and trailing edges parallel to said blade edge, wherein said skin-contacting element includes a flexible base secured to said shaving head and a plurality of skin engaging members extending from said strip, and wherein said skin engaging members define a plurality of flow-through channels extending from said leading edge to said trailing edge.
Claim 26
Dependent Claim
104 words
A shaving implement comprising: at least one razor blade having a blade edge extending in a direction; a shaving head which secures said at least one razor blade, said shaving head being flexible in a direction perpendicular to said razor blade; and said shaving head including a skin-contacting element having leading and trailing edges parallel to said blade edge, wherein said skin-contacting element includes a flexible base secured to said shaving head and a plurality of skin engaging members extending from said strip, and wherein said skin engaging members define a plurality of flow-through channels extending from said leading edge to said trailing edge.
Claim 27
Dependent Claim
25 words
A shaving implement according to claim 24, further comprising a guard portion lying forward of said blade edge, said guard portion including said skin-contacting element.
Claim 28
Dependent Claim
124 words
A shaving implement comprising: at least one razor blade having an edge; a shaving head made of a relatively rigid plastic material, wherein said shaving head secures said at least one razor blade and includes a cap portion and a guard portion; wherein at least one of said guard and cap portions has a recess including a seat portion and a joint-forming portion; an elastomeric skin-contacting element filling said recess and joint-forming portion to form a mechanical joint with said at least one cap and guard portion, wherein said skin-contacting element includes a skin engaging surface projecting from said recess and wherein said skin engaging surface comprises a plurality of flexible ribs extending forward of said guard portion and parallel to said blade edge.
Claim 29
Dependent Claim
124 words
A shaving implement comprising: at least one razor blade having an edge; a shaving head made of a relatively rigid plastic material, wherein said shaving head secures said at least one razor blade and includes a cap portion and a guard portion; wherein at least one of said guard and cap portions has a recess including a seat portion and a joint-forming portion; an elastomeric skin-contacting element filling said recess and joint-forming portion to form a mechanical joint with said at least one cap and guard portion, wherein said skin-contacting element includes a skin engaging surface projecting from said recess and wherein said skin engaging surface comprises a plurality of flexible ribs extending forward of said guard portion and parallel to said blade edge.
Claim 30
Dependent Claim
28 words
A shaving implement according to claim 26, wherein said skin-contacting element is insert molded onto said guard portion, and is disposed forward of, and below, said blade edge.
Claim 31
Dependent Claim
29 words
A shaving implement according to claim 27, wherein said guard portion includes an outermost guard surface lying generally along a tangent between said cap portion and resilient skin-contacting element.
Claim 32
Dependent Claim
14 words
A shaving implement according to claim 26, wherein said joint-forming portion is dovetail shaped.
Claim 33
Dependent Claim
42 words
A shaving implement according to claim 27, wherein said guard portion comprises a plurality of guard segments arranged parallel to said blade edge and having gaps therebetween; and wherein said skin-contacting element comprises a skin-contacting element segment associated with each guard segment.
Claim 34
Dependent Claim
43 words
A shaving implement according to claim 30, wherein each said guard segment includes a recess including a seat portion and a joint-forming portion, and wherein said skin-contacting segments are insert molded to fill said recess and form a joint with said joint-forming portion.
Claim 35
Dependent Claim
14 words
A shaving implement according to claim 31, wherein said joint-forming portion is dovetail shaped.
Claim 36
Dependent Claim
29 words
A shaving implement according to claim 26, wherein said skin engaging surface comprises a plurality of flexible ribs extending perpendicular to said blade and parallel to said blade edge.
Claim 37
Dependent Claim
18 words
A shaving implement according to claim 26, wherein said skin engaging surface comprises an array of flexible ridges.
Claim 38
Dependent Claim
25 words
A shaving implement according to claim 26, wherein said skin engaging surface comprises a plurality of flexible ribs oriented generally perpendicular to said blade edge.
Claim 39
Dependent Claim
18 words
A shaving implement according to claim 26, wherein said skin engaging surface comprises a plurality of elliptical bulges.
Claim 40
Dependent Claim
16 words
A shaving implement according to claim 26, wherein said skin-contacting element is disposed in said cap.
Claim 41
Dependent Claim
27 words
A shaving implement according to claim 26, wherein said shaving head secures a pair of razor blades, and wherein said skin-contacting element is disposed between said blades.
Claim 42
Dependent Claim
17 words
A shaving implement according to claim 26, further comprising a second skin-contacting element disposed in said cap.
Claim 43
Dependent Claim
24 words
A shaving implement according to claim 26, wherein said skin-contacting element is formed of a material that will chemically bond with said shaving head.
References Cited (Backward Citations)
US1651917A
Cited
US2068085A
Cited
US2300794A
Cited
US2374612A
Cited
US2548959A
Cited
US2568047A
Cited
US2766521A
Cited
US2817146A
Cited
US3138865A
Cited
US3722090A
Cited
US3909939A
Cited
FR2323502A1
Cited
GB1557177A
Cited
US4189832A
Cited
US4310968A
Cited
WO1981002864A1
Cited
US4741103A
Cited
EP0254491A1
Cited
US5141694A
Cited
US5191712A
Cited
EP0366139A2
Cited
EP0397638A2
Cited
US4998347A
Cited
US5185927A
Cited
US5249361A
Cited
WO1993023214A1
Cited
WO1994004325A1
Cited
WO1994017967A1
Cited
US5546660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-24 | 2001-05-26 | 2001-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-24 | 2005-05-26 | 2005-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-24 | 2009-05-26 | 2009-11-25 | $7700.00 | Window Closed / Lapsed |