U.S. patent number 3,816,914 [Application Number 05/254,738] was granted by the patent office on 1974-06-18 for holders for razor blades.
This patent grant is currently assigned to Wilkinson Sword Limited. Invention is credited to Jurgen E. Wordtmann.
United States Patent |
3,816,914 |
Wordtmann |
June 18, 1974 |
HOLDERS FOR RAZOR BLADES
Abstract
A holder for a razor blade of the kind which is secured in a
permanent manner to a substantially rigid member, has a seat for
receiving the rigid member, a fixed projection or recess on the
seat, and clamping means for securing the rigid member on the seat
with the fixed projection or recess in engagement with a recess or
projection on the rigid member, release of the razor blade from the
holder being effected by application of pressure to the rigid
member which causes a reaction between the rigid member and the
fixed projection or recess to disengage the latter from the recess
or projection in the rigid member.
Inventors: |
Wordtmann; Jurgen E. (Solingen,
DT) |
Assignee: |
Wilkinson Sword Limited
(London, EN)
|
Family
ID: |
10070616 |
Appl.
No.: |
05/254,738 |
Filed: |
May 18, 1972 |
Foreign Application Priority Data
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|
|
|
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May 20, 1971 [GB] |
|
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16070/71 |
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Current U.S.
Class: |
30/64; 30/47;
30/346.58; 30/526 |
Current CPC
Class: |
B26B
21/521 (20130101); B26B 21/16 (20130101); B26B
21/165 (20130101) |
Current International
Class: |
B26B
21/16 (20060101); B26B 21/24 (20060101); B26B
21/52 (20060101); B26B 21/00 (20060101); B26B
21/08 (20060101); B26b 021/30 (); B26b 021/52 ();
B26b 021/54 () |
Field of
Search: |
;30/32,40,40.2,47,51,64,68,85,346.58 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Smith; Al Lawrence
Assistant Examiner: Smith; Gary L.
Attorney, Agent or Firm: Wolfe, Hubbard, Leydig, Voit &
Osann, Ltd.
Claims
I claim:
1. A holder for a razor blade secured in a permanent manner to a
substantially rigid member having a a surface with a fixed
discontinuity therein which comprises a seat for receiving said
rigid member and having a discontinuity therein complementary to
the discontinuity of the surface of said rigid member, the surface
of said rigid member, when said rigid member is placed in position,
abutting the discontinuity of said seat, clamping means unitary
with said holder for securing each end of said rigid member on said
seat with said seat discontinuity in engagement with the
discontinuity in said surface of the rigid member, and ejecting
means for applying pressure to said rigid member to cause a
reaction between the discontinuity in said surface of the rigid
member and said seat discontinuity, the application of pressure
lifting a portion of said surface of the rigid member between each
end from said seat to disengage the seat discontinuity from the
discontinuity in said surface of the rigid member thereby to free
said rigid member so that the continued application of pressure to
said rigid member positively ejects said razor blade from said
holder.
2. A holder for a razor blade secured in a permanent manner to a
substantially rigid member having a surface with a recess therein,
which comprises a seat for receiving said rigid member and having a
fixed projection shaped complementary to the recess in the surface
of the rigid member to accommodate the recess in the surface of the
rigid member, clamping means unitary with said holder for securing
each end of said rigid member in engagement with said seat, and
ejecting means for applying pressure to said rigid member to cause
a reaction between said fixed projection and the recess in said
rigid member to lift a portion of said surface of the rigid member
between each end of said rigid member from said seat to disengage
said recess from said projection thereby freeing said razor blade
for ejection from said holder by the applied pressure.
3. A holder according to claim 2, wherein said ejecting means
comprises a pivotable thumb-operable member located between said
clamping means and adapted to engage said rigid member intermediate
the ends thereof.
4. An article of manufacture comprising a substantially rigid
member having a surface with a discontinuity therein, a razor blade
secured in a permanent manner to said rigid member and a holder
including a seat for receiving said rigid member and having a fixed
discontinuity therein shaped complementary to, and engaging, the
discontinuity of the surface of said rigid member, clamping means
unitary with said holder for securing each end of said rigid member
on said seat with said seat discontinuity in engagement with the
discontinuity in said surface of the rigid member, and ejecting
means for applying pressure to said rigid member to cause a
reaction between the discontinuity in said surface of the rigid
member and said seat discontinuity, the application of pressure
lifting a portion of said surface of the rigid member between each
end from said seat to disengage the seat discontinuity from the
discontinuity in said surface of the rigid member thereby to free
said rigid member so that the continued application of pressure to
said rigid member positively ejects said razor blade from said
holder.
Description
This invention relates to shaving devices and more particularly to
holders for razor blades which are secured in a permanent manner to
a substantially rigid member. The rigid member preferably provides
a guard surface located at a preset spacing from the cutting edge
of the blade.
According to the present invention there is provided a holder for a
razor blade which is secured in a permanent manner to a
substantially rigid member, wherein said holder has a seat for
receiving said rigid member, a fixed projection or recess on said
seat, and clamping means for securing said rigid member on said
seat with said fixed projection or recess in engagement with a
recess or projection on said rigid member, release of said razor
blade from said holder being effected by application of pressure to
said rigid member which causes a reaction between said rigid member
and said fixed projection or recess to disengage the latter from
the recess or projection in said rigid member.
The invention also provides a holder for a razor blade which is
secured in a permanent manner to a substantially rigid member,
wherein said holder has a seat for receiving said rigid member, a
fixed projection or recess on said seat, clamping means for
securing each end of said rigid member in engagement with said
seat, and ejecting means for applying pressure to said rigid member
to cause separation between said fixed projection or recess and the
recess or projection in said rigid member thereby freeing said
razor blade for ejection from said holder by the applied
pressure.
One construction of holder for razor blades in accordance with the
present invention will now be described, by way of example, with
reference to the accompanying drawings in which:
FIG. 1 is a side view of this construction of holder with a razor
blade in shaving position,
FIG. 2 is a rear view of the holder with a razor blade in shaving
position,
FIG. 3 is a plan view of the holder without a razor blade
present,
FIG. 4 is a view of the upper part of the holder, without a razor
blade present,
FIG. 5 is a mid-sectional side view of the upper part of the holder
with a razor blade in shaving position.
Referring now to the drawings, these show a razor blade 11 secured
in a permanent manner to a substantially rigid member 10, a guard
surface 10a being located at a preset spacing from the cutting edge
11a of the blade 11. In use, and as illustrated, the rigid member
10 is located in a holder 12, made for example of plastic, on a
seat 13 between end claws 14,14 which each embrace one end of the
rigid member 10. The latter is held in position by engagement with
a fixed detent or projection 13a upstanding from the seat 13, the
detent 13a engaging in an aperture 10b in the underside of the
rigid member 10.
Between the end claws 14 there is located an ejecting member 15
which is held in position by a rivet 16. The relative size of the
stem 16a of the rivet 16 and the hole 12a in which it fits is such
that the ejecting member 15 can pivot to a limited extent relative
to the seat 13.
To eject the razor blade, the user applies pressure, conveniently
by the thumb, to the rear of the ejecting member 15 to transmit
pressure to the rear of the rigid member 10 where it is engaged by
end ribs 15a on the ejecting member 15. The resultant reaction
between the detent 13a and the surface of the aperture 10b in the
rigid member 10 is such that the shaving unit 10 bows
longitudinally with the mid-portion of the rigid member 10 lifting
from the seat 13 so that the detent 13a no longer lies within the
aperture 10b. The rigid member 10 carrying the blade 11 is thus
free from the holder 12 and is ejected from the holder positively
and rapidly due to the pressure applied by the user to the ejecting
member.
It will be appreciated that the expression "substantially rigid" is
used to emphasize that the member 10 must be sufficiently flexible
to enable it to bow longitudinally when being ejected.
Prior to use, razor blades of the kind described above are normally
stored in a container with the rear edge of the rigid member
accessible. To pick up a new razor blade from the container the
opening between the seat 13 on the one hand and the undersurface of
the claws 14 and ejecting member 15 on the other hand, is presented
to the rear edge of the rigid member. The claws 14 first embracing
the respective ends of the rear edge of the rigid member 10
thereafter bows longitudinally, due to the mid-portion of the rigid
member 10 passing over the detent 13a, whereby the detent 13a can
enter the aperture 10b to secure the rigid member in position in
the holder 12.
Although the holder has been shown with a projection on the seat 13
(namely the detent 13a) and a recess in the rigid member 10 (namely
the aperture 10b) it will be readily apparent that, as an
alternative, the recess could be in the seat 13 and the projection
on the underside of the rigid member 10.
* * * * *