U.S. patent number 3,815,227 [Application Number 05/254,739] was granted by the patent office on 1974-06-11 for holders for razor blades.
This patent grant is currently assigned to Wilkinson Sword Limited. Invention is credited to Christopher J. Hood.
United States Patent |
3,815,227 |
Hood |
June 11, 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 fixed
projection or recess which, when the razor blade is located in the
holder, engages a recess or projection of the rigid member, and a
resilient member adapted normally to retain the fixed projection or
recess in engagement with the recess or projection of the rigid
member, the razor blade being released from the holder by pressure
on the rigid member which, by reaction between the fixed projection
or recess and the projection or recess of the rigid member,
overcomes the retaining action of the resilient member.
Inventors: |
Hood; Christopher J. (Tolworth,
EN) |
Assignee: |
Wilkinson Sword Limited
(London, EN)
|
Family
ID: |
10070413 |
Appl.
No.: |
05/254,739 |
Filed: |
May 18, 1972 |
Foreign Application Priority Data
|
|
|
|
|
May 20, 1971 [GB] |
|
|
16059/71 |
|
Current U.S.
Class: |
30/64; 30/337;
30/526 |
Current CPC
Class: |
B26B
21/521 (20130101); B26B 21/165 (20130101); B26B
21/24 (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 021/16 (); B26b
005/00 () |
Field of
Search: |
;30/32,40,40.2,47,51,64,68,85,346.58,58,330,331,337 |
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 surface discontinuity therein
which comprises a surface discontinuity in said holder shaped
complementally to, and engaging when the rigid member and razor
blade are in position for shaving, the surface discontinuity of
said rigid member, and a resilient member adapted normally to
retain said holder discontinuity and said rigid member
discontinuity in engagement when said razor blade is held by said
holder for shaving, said resilient member being movable into
engagement with said rigid member to apply pressure to said rigid
member which, by reaction between said holder discontinuity and
said rigid member discontinuity, overcomes the retaining action of
said resilient member, the continued application of said pressure
to said rigid member positively ejecting said razor blade from said
holder.
2. A holder according to claim 1, wherein said resilient member
comprises a metal cap and said holder has a seat whose surface has
a discontinuity thereon which provides said holder discontinuity,
said rigid member being sandwiched between said seat and the
underside of said metal cap.
3. A holder according to claim 2, wherein said cap is pivotally
connected to said holder.
4. An article of manufacture comprising a substantially rigid
member having a surface discontinuity therein, a razor blade
secured in a permanent manner to said rigid member, a holder having
a surface discontinuity shaped complementally to, and engaging, the
surface discontinuity of said rigid member, and a resilient member
adapted normally to retain said holder discontinuity and said rigid
member discontinuity in engagement when said razor blade is held by
said holder for shaving, said resilient member being movable into
engagement with said rigid member to apply pressure to said rigid
member which, by reaction between said holder discontinuity and
said rigid member discontinuity, overcomes the retaining action of
said resilient member, the continued application of said pressure
to said rigid member positively ejecting 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 fixed
projection or recess which, when said razor blade is located in
said holder, engages a recess or projection of siad rigid member,
and a resilient member adapted normally to retain said fixed
projection or recess in engagement with the recess or projection of
said rigid member, said razor blade being released from said holder
by pressure on said rigid member which, by reaction between said
fixed projection or recess and the projection or recess of said
rigid member, overcomes the retaining action of said resilient
member.
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 rear view of this construction of holder with a razor
blade in shaving position,
FIG. 2 is a side view of this construction of 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 part-sectional front view of the upper part of the
holder, without a razor blade present, and
FIG. 5 is a mid-sectional side view of the upper part of the holder
with a razor blade in shaving position.
In the construction of holder shown in the drawings the rigid
member 10 is held in the holder 22, for example of plastic, on a
seat 23 by a resilient metal cap 21 which may be of stainless
steel. The rigid member 10 is located in position on the seat 23 by
engagement with a fixed detent 23a upstanding from the seat 23, the
detent 23a engaging in an aperture 10b in the underside of the
rigid member 10.
The cap 21 extends downwardly at the rear of the holder 22 and is
retained at its lower end by an inwardly directed tang 21a secured
in the body of the holder 22. Towards its upper end the cap 21 has
stops 24, 24 with outwardly directed tongues 24a, 24a which extend
into recesses 22a, 22a in the body of the holder 22. The extent of
forward and backward pivotal movement of the cap 21 is limited by
engagement of the tongues 24a, 24a with the front face 22b, 22b and
the rear face 22c, 22c of the recess 22a into which the respective
tongue 24a extends.
To eject the razor blade the user applies pressure to the rear
surface of the cap 21 so that the rear surface of the cap 21 tends
to straighten thereby reducing the downward pressure of the top of
the cap 21 on the rigid member 10. Furthermore, pressure is
transmitted to the rear of the rigid member 10. Because of the
reaction between the inclined surfaces of the detent 23a and the
aperture 10b which are in contact with one another, the rigid
member 10 lifts from the seat 23 against the reduced pressure of
the top of the cap 21. The rigid member 10 is thus freed from
engagement with the detent 23a and is ejected from the holder
positively and rapidly due to the continuing pressure applied by
the user to the rear of the cap 21.
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 23 and the cap 21 is presented to the rear
edge of the rigid member 10. Engagement of the undersurface of the
cap 21 with the rear edge of the rigid member causes the cap 21 to
move away from the seat 23, as described above, the rigid member
passing over the detent 23a, whereby the detent 23a can enter the
aperture 10b to secure the rigid member 10 in position in the
holder 22.
Although the holder has been shown with a projection on the seat 23
(namely the detent 23a) 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 23 and the projection
on the underside of the rigid member 10.
* * * * *