U.S. patent number 3,918,155 [Application Number 05/358,101] was granted by the patent office on 1975-11-11 for shaving devices.
This patent grant is currently assigned to Wilkinson Sword Limited. Invention is credited to Colin A. Atkins.
United States Patent |
3,918,155 |
Atkins |
November 11, 1975 |
Shaving devices
Abstract
This invention relates to shaving devices, and more particularly
to holders for shaving units of the kind in which a razor blade is
secured in a permanent manner to a substantially rigid member. The
holder comprises ejecting means for ejecting a shaving unit from
the holder when the shaving unit is to be replaced. The ejecting
means is a unitary member which has a latch portion adapted to
secure a shaving unit in the holder, and which also has a head
adapted to be brought into engagement with the rear of the shaving
unit. The latch portion and the head are relatively-movable towards
one another against a restoring force which results from the
inherent resilience of the unitary member.
Inventors: |
Atkins; Colin A. (Staines,
EN) |
Assignee: |
Wilkinson Sword Limited
(Buchinghamshire, EN)
|
Family
ID: |
10187514 |
Appl.
No.: |
05/358,101 |
Filed: |
May 7, 1973 |
Foreign Application Priority Data
|
|
|
|
|
May 16, 1972 [UK] |
|
|
22939/72 |
|
Current U.S.
Class: |
30/47; 30/64;
30/541 |
Current CPC
Class: |
B26B
21/16 (20130101); B26B 21/165 (20130101); B29C
66/636 (20130101); B29C 66/54 (20130101); B29C
66/12841 (20130101); B29C 65/08 (20130101); B29C
66/1282 (20130101); B29L 2031/7186 (20130101) |
Current International
Class: |
B26B
21/16 (20060101); B26B 21/08 (20060101); B26B
021/30 (); B26B 021/52 (); B26B 021/54 () |
Field of
Search: |
;30/32,47,64,85 |
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 shaving device including a holder and a shaving unit, said
shaving unit consisting of a substantially rigid member to which at
least one razor blade is secured with the rigid member having a
guard surface located at a pre-set spacing from the cutting edge of
the blade,
said holder including ejecting means for ejecting a shaving unit
from said holder when the shaving unit is to be replaced, said
ejecting means being a unitary member having a latch portion for
securing said shaving unit in the holder, said unitary member
further having a head for engagement with the rear of said shaving
unit when it is held in the holder, said latch portion and said
head being relatively-movable toward one another against a
restoring force which results from the inherent resilience of the
unitary member.
2. A device according to claim 1, wherein said ejecting means
carries an ejector button by which pressure is applied, via said
head, to the rear of the shaving unit to be ejected.
3. A shaving device including a holder and a shaving unit, said
shaving unit consisting of a substantially rigid member to which at
least one razor blade is secured with the rigid member having a
guard surface located at a pre-set spacing from the cutting edge of
the blade,
said holder including ejecting means for ejecting a shaving unit
from said holder when the shaving unit is to be replaced, said
ejecting means having two coupled limbs, the free end of one limb
carries an ejector button by which pressure is applied, via the
free end of said one limb, to the rear of the shaving unit to be
ejected, and the free end of the other limb forming a latch which
secures said shaving unit in the holder, the application of
pressure to the rear of the shaving unit by the free end of said
one limb causing said latch to move out of engagement with the
shaving unit thereby permitting ejection of said shaving unit.
Description
This invention relates to shaving devices. More particularly the
invention relates to holders for shaving units. By the term
`shaving unit` is meant a substantially rigid member, generally of
plastics material, to which one or more razor blades is secured
with the rigid member providing a guard surface located at a
pre-set spacing from the cutting edge of the, or each, blade.
According to the present invention there is provided a holder for a
shaving unit, said shaving unit consisting of a substantially rigid
member to which one or more razor blades is secured with the rigid
member providing a guard surface located at a pre-set spacing from
the cutting edge of the, or each, blade, said holder comprising
ejecting means for ejecting a shaving unit from said holder when
the shaving unit is to be replaced, said ejecting means being a
unitary member which has a latch portion adapted to secure a
shaving unit in the holder, and which also has a head adapted to be
brought into engagement with the rear of a shaving unit when it is
held in the holder, said latch portion and said head being
relatively-movable towards one another against a restoring force
which results from the inherent resilience of the unitary
member.
The invention also provides a holder for a shaving unit, said
shaving unit consisting of a substantially rigid member to which
one or more razor blades is secured with the rigid member providing
a guard surface located at a pre-set spacing from the cutting edge
of the, or each, blade, said holder comprising ejecting means for
ejecting a shaving unit from said holder when the shaving unit is
to be replaced, said ejecting means having two coupled limbs, the
free end of one limb being adapted to be brought into engagement
with the rear of a shaving unit when it is held in the holder, and
the free end of the other limb forming a latch which is adapted to
secure a shaving unit in the holder, the application of pressure to
the rear of the shaving unit by the free end of said one limb
causing said latch to move out of engagement with the shaving unit
thereby permitting ejection of said shaving unit.
One construction of holder for shaving units will now be described,
by way of example only, with reference to the accompanying drawings
in which:
FIG. 1 is a side view of the holder,
FIG. 2 is a rear view of the holder,
FIG. 3 is a mid-sectional view of the side of the holder opposite
to that shown in FIG. 1, and with a razor blade in position,
FIG. 4 is a side view of the ejector member on an enlarged
scale,
FIG. 5 is an end view of the ejector member,
FIG. 6 is a section on the line VI--VI in FIG. 2,
FIG. 7 is a section on the line VII--VII in FIG. 2, and
FIG. 8 is a section of the line VIII--VIII in FIG. 3.
Referring now to the drawings, this construction of holder is
designed to hold a razor blade 11 (FIG. 3) secured in a permanent
manner to a substantially rigid member 10 of plastics material, a
guard surface 10a being located at pre-set 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, assembled from a front 13 and
back 14, between jaws 14a, 14b, formed integrally with the holder
back 14. The rigid member 10 is held in position between jaws 14a,
14b by the latch portion 15a of a unitary ejector member 15, the
latch portion 15a engaging in an aperture 10b in the underside of
the rigid member 10. The latch portion 15a is at the free end of
one limb of the two-limbed unitary ejector member 15 the other limb
of which carries a button 15b which projects through an aperture
14c in the holder back 14.
To eject the razor blade 11 the user applies pressure, conveniently
by the thumb, to the rear of the ejector button 15b so that the
head 15c of that limb of the ejector member 15 which carries the
ejector button 15b, applies pressure to the rear of the rigid
member 10. The resultant reaction between the latch portion 15a and
the surface of the aperture 10b in the rigid member 10 is such that
the latch portion 15a moves forwardly and downwardly, which is
possible due to the flexibility of the ejector member 15 which
allows movement of the two limbs towards one another. The rigid
member 10 carrying the blade 11 is thus freed and is ejected from
the holder 12 positively and rapidly due to the pressure applied by
the user to the ejector member 15.
Prior to use, razor blades of the kind described 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 jaws 14a, 14b is presented to the rear edge of
the rigid member 10 and the initial contact of the underside of the
rigid member 10 with the latch portion 15a causes the latter to be
depressed until the aperture 10b comes opposite the latch portion
15a when the latch rises into engagement with the aperture 10b to
retain the rigid member 10 between the jaws 14a, 14b so that the
razor blade is securely held in the holder and can be removed from
the container.
Conveniently the front 13 and back 14 of the holder are both
plastic mouldings. To facilitate assembly, and as shown in FIG. 6,
projections 13a are provided at each end of the upper surface of
the front 13 to engage in corresponding recesses 14d in the
underside of the jaw 14b. As shown in FIG. 7 recesses 14e in
longitudinal webs 14f on the inner face of the back 14 engage
corresponding projections 13b on the inner face of the front 13 to
provide longitudinal location between the front 13 and back 14. A
downwardly extending tongue 14g (FIG. 3) is provided at the lower
end of the back 14 facing inwardly, to secure the front 13 and back
14 together before they are bonded by appropriate means, for
example by ultrasonic welding. If desired a metal weight 16 may be
housed within the holder 12 to give a desired balance and
`feel`.
* * * * *