Blade unit and lubrapad

Patent metadata

Field	Value
Publication number	US-2020198161-A1
Application number	US-201816631571-A
Country	US
Kind code	A1
Filing date	Jul 16, 2018
Priority date	Jul 17, 2017
Publication date	Jun 25, 2020
Grant date	—

Abstract

A blade unit and a lubrapad for attachment to a handle of a safety razor, the blade unit comprising: a blade housing and a plurality of blades disposed within the blade housing to expose respective cutting edges suitable for shaving; the blade housing including a guard in front of the cutting edges and a cap to the rear of the cutting edges; and the lubrapad comprising: a lubrapad body comprising solid lubricating material and provided separately from the blade unit, extending along the guard and in front of the guard, the body having a greatest width and/or depth in the blade direction at the guard, the body width and/or depth reducing in a smooth convex curve away from the guard to a curved front portion of the body; wherein the blade unit and lubrapad are arranged to move independently with respect to each other.

First claim

1 .- 15 . (canceled)

16 . A combination of a blade unit and a lubrapad for attachment to a handle of a safety razor, wherein the blade unit comprises:
a blade housing and a plurality of blades disposed within the blade housing to expose respective cutting edges suitable for shaving; the blade housing including a guard in front of the cutting edges and a cap to a rear of the cutting edges; wherein the lubrapad comprises: a lubrapad body comprising solid lubricating material and provided separately from the blade unit, extending along the guard and in front of the guard, the lubrapad body having a greatest width and/or depth in a blade direction at the guard, the body width and/or depth reducing in a smooth convex curve away from the guard to a curved front portion of the body; and wherein the blade unit and lubrapad are arranged to be capable of moving independently with respect to each other.

17 . The combination of claim 16 , wherein the lubrapad has no external supporting structure.

18 . The combination of claim 17 , wherein the lubrapad tapers to a single edge line at the front curved portion.

19 . The combination of claim 16 , wherein the blade unit and/or the lubrapad is arranged to move with respect to the handle of the safety razor.

20 . The combination of claim 16 , wherein the lubrapad comprises a flexible connection to the blade unit or a flexible connection to the handle, and the blade unit comprises a connection to the handle.

21 . The combination of claim 20 , wherein the connection of the blade unit to the handle is flexible.

22 . The combination of claim 16 , wherein both the lubrapad and the blade unit comprise a direct connection to the handle, one or both of the connections being a flexible connection.

23 . The combination of claim 16 , wherein the blade unit comprises one or more projections from a front surface of the guard, which are to be housed in recesses in a first surface portion of the lubrapad body which is directly facing the front surface of the guard.

24 . The combination of claim 16 , wherein the greatest width of the lubrapad body is not larger than a blade unit width.

25 . The combination of claim 16 , wherein the greatest width of the lubrapad body is substantially equal to or smaller than a blade length.

26 . The combination of claim 16 , wherein the lubrapad extends to the front only of the blade unit and does not surround the blade unit, so that there is no lubrapad behind the blades.

27 . The combination of claim 16 , wherein the blade housing comprises rounded portions at its sides, the rounded external surface portions of the blade housing ending in a straight front surface of the guard substantially at extremities of the lubrapad body along its greatest width.

28 . The combination of claim 16 , wherein the lubrapad body comprises a first surface portion directly facing a guard front surface and a second surface portion adjacent a skin-contacting side of the blade unit and making contact with the skin of a user in use, the second surface portion including a curved surface portion, with a three-dimensional convex curvature in which the surface portion curves away smoothly in two directions from a center of a part of the lubrapad body adjacent to the guard, which is the part of the lubrapad body which extends furthest towards the skin of a user in use.

29 . The combination of claim 28 , wherein the lubrapad body further comprises a third surface portion which is directed away from the skin of a user and towards the handle in use, the second surface portion extending between the first and the third surface portions.

30 . The combination of claim 29 , wherein a greatest length of the third surface portion in a shaving direction is at least twice a height of the first surface portion in a direction perpendicular to a shaving plane.

31 . The combination of claim 29 , wherein a greatest length of the third surface portion in a shaving direction is at least three times a height of the first surface portion in a direction perpendicular to a shaving plane.

32 . The combination of claim 16 , wherein the guard is ridged to stretch and orient hair at right angles to the cutting edges.

33 . The combination of claim 16 , wherein cross sections of the lubrapad and the blade unit taken through a center of the lubrapad and the blade unit at right angles to the blades in shaving direction are of substantially equal height, measured in a direction away from a user's skin in use.

34 . A safety razor, wherein the razor comprises the combination of claim 16 and a razor handle for attachment to the blade unit and to the lubrapad.

Assignees

• Beiersdorf Ag

Inventors

• Maurer Peter
• Kruemke Alexander
• Kohut Michaela
• Schultchen Arne
• Feldmann Andre
• Jung Christine
• Warnecke Armin

Classifications

• B26B21/521

  Connection details, e.g. connection to razor heads · CPC title

• B26B21/443 Primary

  Lubricating strips attached to the razor head · CPC title

• B26B21/225

  the changeable unit being resiliently mounted on the handle · CPC title

• B26B21/4018

  Guard elements · CPC title

• B26B21/4025

  Cap elements · CPC title