U.S. patent number 3,576,071 [Application Number 04/728,235] was granted by the patent office on 1971-04-27 for safety razor head cover.
Invention is credited to Frederick H. Eriksen.
United States Patent |
3,576,071 |
Eriksen |
April 27, 1971 |
SAFETY RAZOR HEAD COVER
Abstract
A safety razor head cover for shielding the edges of a razor
blade operably mounted in said head for preventing the dulling of
said edges and the cutting of adjacent articles stored therewith
comprising a section of annular pipe or flexible sleeve at least as
long as the razor blade and defining a tear drop longitudinal
recess or slot for receiving the handle of said razor, and having a
rest diameter less than the width of the razor head but when
longitudinally compressed being wider than said head and thicker to
slide over said head and blade mounted therein, the razor handle
engaging in the slot, and upon release of said compression gripping
said head but leaving said edges unengaged from any contact.
Inventors: |
Eriksen; Frederick H.
(Metairie, LA) |
Family
ID: |
24925991 |
Appl.
No.: |
04/728,235 |
Filed: |
May 10, 1968 |
Current U.S.
Class: |
30/540 |
Current CPC
Class: |
B26B
29/00 (20130101) |
Current International
Class: |
B26B
29/00 (20060101); B26b 021/40 () |
Field of
Search: |
;30/90 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Riordon; Robert C.
Assistant Examiner: Grafel; Gary F.
Claims
I claim:
1. In combination with a safety razor having a head and a handle, a
head cover for shielding the edges of a razor blade mounted in said
head and comprising: a length of flexibly compressible pipe at
least as long as a razor blade, said pipe having a circular cross
section variably compressible to annular cross-sectional dimensions
ranging from the normal circular diameter of less than the width
and more than the thickness of the razor head to unequal transverse
diameters of more than the width and the thickness of said head,
said pipe defining a longitudinal slot extending from one of its
ends for at least half the length of said pipe plus the radius of
the razor handle for receiving said handle, said slot being
tear-shaped and having its narrowest part at the end of the pipe
and its widest part at the center of the pipe, whereby when said
pipe is compressed between two fingers without stretching it can be
slipped along and over the razor head and blade without touching
them, the handle engaging in the tear-shaped slot, and when
compression is released tends to resume its original circular
cross-sectional shape to initially engage and grip the razor head
with a force equalized in part by the tear shape of said slot and
to be retained thereon by said force to shield the edges of the
razor blade from damage and damaging adjacent articles.
2. A variably compressible pipe as described in claim 1, wherein
said round cross section having equal diameters along normal axes
is compressible a distance along one axis to provide half said
distance increase along the other axis.
Description
The invention relates generally to safety razor head covers for
shielding the edges of razor blades operationally mounted in said
heads.
When safety razors with blades operationally mounted in the razor
heads are stored with other articles for travel, the blade is
usually damaged and also damages at least some of the other
articles stored therewith.
It is an object of the invention to shield the operationally
mounted blade from damaging other articles with which it is stored
and from damage to itself.
Another object of the invention is to save space by only enclosing
the razor head.
Another object of the invention is to provide a cover that is
easily operable with one hand to slip on and off a razor head but
will nevertheless remain securely attached to the head until
intentionally released.
Other objects of the invention and a full understanding thereof may
be had by referring to the following description, claims and
drawings in which:
FIG. 1 is a perspective view of the invention showing the teardrop
recess or slot,
FIG. 2 is a perspective view showing the invention being held in a
compressed condition adjacent a razor head for mounting
thereon,
FIG. 3 is an end elevation of the invention mounted on the head of
a safety razor, and
FIG. 4 is a bottom view of the invention taken along section line
4-4 of FIG. 3.
The invention (FIG. 1) is an article of manufacture and comprises a
section of flexibly compressible pipe or sleeve 5 of circular cross
section that is at least as long as the head of a safety razor. The
pipe or sleeve 5 may be of neoprene or any suitable plastic that
tends to return to its original shape after being longitudinally
compressed. A tear-shaped recess or slot 6 is defined to extend
longitudinally in the sleeve from one end to a point intermediate
the other end and the middle of said sleeve, the narrowest part of
the tear-shaped slot (somewhat less than the diameter of the razor
handle) being defined adjacent said one end and the widest part
(about said handle's diameter) about in the middle of the sleeve.
The diameter of the sleeve is critical and should be less than the
width of the razor head 8 when in its natural cylindrical shape and
more than the width when it is longitudinally compressed to not
less than the thickness of the razor head. The dimensions of the
usual razor head is approximately 1 5/8 -inches long, 1 -inch wide,
and 1/4 -inch thick. The handle 9 is about one-fourth inch in
diameter. The longitudinal compression of a cylindrical sleeve for
a given distance results in an extension of the sleeve along the
axis normal to the compression axis of one-half said given
distance. Since it is desirable for the sleeve not to engage the
blade edges at any time (see FIG. 3) the dimensions of the sleeve
should not result in a tight exact fit of the cover over the head.
For the average razor head the best performance should be obtained
from the following dimensions: length 1 5/8 inches, diameter
seven-eights inch, and the widest part of the tear-shaped slot
one-fourth inch and extending fifteen-sixteenths inch from one end
of the sleeve. FIG. 4 shows shape of slot 6 with cover on.
To operate, the sleeve 5 is compressed between thumb and forefinger
as shown in FIG. 2 and the razor head 8 is slipped into the
flattened sleeve with the handle 9 of the razor engaging in slot 6.
The sleeve 5 is then released and in tending to return to its
natural shape grips the head 8 and the face guard 11 but clearing
the edges of blade 10 which are left shielded and unengaged by the
sleeve as shown in FIG. 3. To remove, the cover 5 is recompressed
as explained above and slipped off the head.
* * * * *