U.S. patent number 3,878,605 [Application Number 05/314,194] was granted by the patent office on 1975-04-22 for handle construction.
This patent grant is currently assigned to Philip Morris Incorporated. Invention is credited to Paul A. Braginetz.
United States Patent |
3,878,605 |
Braginetz |
April 22, 1975 |
Handle construction
Abstract
An elongated handle member particularly adapted for a safety
razor embodying a main stem of plastic material which has at two
opposite sides metal strips which are channel shaped with flanges
engaged in longitudinal openings in the respective sides of the
stem the flanges having T-shaped flexible fingers projecting
therefrom engaged over lugs in the respective side walls of said
openings, the handle including a head secured to the stem having a
saw-toothed tang extending axially of the stem at one end thereof,
the head having a pair of opposed relatively large faces bearing
appropriate indicia.
Inventors: |
Braginetz; Paul A. (Augusta
County, VA) |
Assignee: |
Philip Morris Incorporated (New
York, NY)
|
Family
ID: |
23218963 |
Appl.
No.: |
05/314,194 |
Filed: |
December 11, 1972 |
Current U.S.
Class: |
30/526; 29/453;
16/110.1; 16/902 |
Current CPC
Class: |
B25G
1/00 (20130101); B25G 3/02 (20130101); B26B
21/52 (20130101); B26B 21/521 (20130101); Y10T
29/49876 (20150115); Y10S 16/902 (20130101); Y10T
16/44 (20150115) |
Current International
Class: |
B25G
3/00 (20060101); B26B 21/52 (20060101); B26B
21/00 (20060101); B25G 3/02 (20060101); B25G
1/00 (20060101); B26b 021/52 () |
Field of
Search: |
;16/11A,11R,116R
;29/453,462 ;30/32,34A,47,85,86,340,342 ;403/326,329,345 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Smith; Al Lawrence
Assistant Examiner: Smith; Gary L.
Attorney, Agent or Firm: Watson Leavenworth Kelton &
Taggart
Claims
What is claimed is:
1. A handle construction embodying an elongated main stem of
plastic material, and an end element for connecting the handle to
an article, said element having a tang extending into a
longitudinal opening at said one end of said stem, said tang being
generally flat with opposed saw tooth edges, said stem opening
having opposed longitudinal ribs complemental to the respective
said saw tooth edges, the distance between the opposed inner edges
of said ribs being normally less than the overall width of said
tang whereby the tips of the saw teeth are embedded in said ribs,
said tang being press fitted into said stem, and said ribs being
defined by a longitudinally extending recess at each side
permitting the plastic material to be laterally deformed into said
recesses in the press insertion of the tang.
2. A handle construction in accordance with claim 1 in which said
longitudinal opening in said stem and said tang are generally
rectangular in cross section and the thickness of said tang is
substantially equal to the width of said opening transverse to said
ribs.
3. A handle construction in accordance with claim 1 in which said
end element is adapted to support a safety razor head.
4. A handle construction comprising an elongated main stem having a
longitudinally extending opening in the form of a slot with opposed
side walls and longitudinally extending outer substantially flat
edge strips, an elongated channel shaped member having side flanges
engaged within said slot and having a substantially flat outer
face, said side flanges each having a plurality of finger locking
elements spaced along the respective flange comprising inward
continuations of the flange, said finger locking elements each
having an opening, the said side walls of said slot having lugs
projecting into corresponding said openings respectively of said
finger locking elements, said outer face of said channel member
merging substantially with said edge strips of the stem.
5. A handle in accordance with claim 4 having a pair of said
channel members arranged in said stem in opposed relation and
similarly secured in said stem.
6. A handle in accordance with claim 5 in which the slots for the
opposed channel members generally coincide with communication
transversely through the stem.
7. A handle in accordance with claim 5 in which said main stem is
of plastic material, and said channel shaped members are of metal
in contrasting color.
8. A handle in accordance with claim 4 in which said finger locking
elements are composed of flexible material, and said lugs have
outer inclined surfaces and inner shoulder edges aiding in
receiving said finger locking elements and locking the channel
member in place.
9. A handle in accordance with claim 4 in which said finger locking
elements are generally T-shaped with an opening in the form of a
notch at each edge and the side walls have a pair of spaced said
lugs each engaged in a corresponding said notch.
Description
HANDLE CONSTRUCTION
The invention is concerned with a handle construction of the
slender elongated type adapted to have an article attached to one
end particularly a safety razor head or cartridge. The handle is
both attractive and well adapted functionally for the purpose and
may be easily and economically fabricated.
It includes a main elongated stem part of plastic material having a
long slot at each of a pair of opposite sides into which is fitted
in each case a long channel or U-shaped trim insert of flexible
material such as metal, the inwardly projecting side flanges having
small finger extensions with openings therein adapted to engage
over lugs protruding from the side walls of the stem slots, the
fingers being flexible enable them to be spring-snapped into
locking position behind shoulder edges of the lugs.
For securing an article to the end of the handle, a connecting part
has a flat saw-toothed tang press fitted into an axial slot
extending inwardly from one end of the handle, the tips of the saw
teeth being embedded in the deformable plastic material.
The handle is composed of but a few parts which are easily press
fitted together in final interlocked condition.
The objects of the invention and its advantages will be made more
fully apparent from a consideration of a preferred embodiment
depicted in the drawings in which:
FIG. 1 is an exploded view of the members;
FIG. 1a is a bottom end view;
FIG. 2 is a longitudinal cross sectional view of the handle with
the parts assembled taken on the plane II--II of FIG. 1a;
FIG. 3 is a plan view of the assembled handle with a portion of the
plastic main stem part and also a portion of one of the channel
inserts broken away;
FIGS. 4, 5 and 6 are transverse cross sectional views taken on the
planes 4, 5 and 6 respectively of the handle; and
FIG. 7 is a perspective view of the upper end of the handle showing
indicia applied thereon.
In the specific embodiment of the handle the several parts shown
particularly in FIG. 1 comprise a main stem part 10 of plastic
material, elongated side inserts 11 and 12 of elastic material such
as thin metal and an end part 13 having a tang portion 14 adapted
to be press fitted into an axial opening at the normal upper end of
the main stem part 10, the end part 13 serving as a means for
connecting an article to the handle which in the present case is
particularly adapted for securing a razor head or cartridge thereto
indicated in broken lines at 15 in FIG. 2, the connecting part 13
in this case having a dovetail head or key 16 adapted to engage in
a complemental dovetail slot in the razor cartridge 15.
The channels 11 and 12 may be identical but reversed end for end as
assembled in the handle. Each is provided with fingers projecting
inwardly as continuations of the side flanges of the U-shaped
channel part. Specifically the channel part 11 for example as
assembled in the stem 10 has opposed side flanges 20 and 21, a pair
of finger elements 22 projecting from the flange 21 and a pair of
finger elements 23 projecting from the opposite flange 20. Each
finger has an opening adapted to engage over a lug on the
corresponding wall of the slot in the main stem member 10. As
stated above the insert channel member 12 is similarly shaped and
as assembled in the stem has fingers 24 at one side flange and
fingers 25 at the opposite side flange.
In the present case each finger is made T-shaped with side openings
such as shown at 26 and 27 of a finger 22 resulting in lugs 28 and
29 which are adapted in the case of each finger to engage over a
pair of lugs 30 and 31 on the wall of the slot in the main stem,
the lugs having an inclined surface facing outwardly as indicated
at 40 and 41 in FIG. 6. Also the inner end of each finger is bent
inwardly a small amount toward the central area of the channel as
indicated at 42 in FIG. 6. The trim inserts 11 and 12 therefore are
easily applied by a small amount of pressure until the T-shaped end
snaps over the corresponding lugs the lugs having an inner square
shoulder as indicated at 43 in FIG. 6 for locking the respective
finger and thereby the channel in place.
Each channel is elongated at its upper end beyond the finger parts
into a plain U-shaped channel with the flanges received in slots in
the corresponding portions of the main stem 10 as indicated at 50
for example in FIG. 5 which is a section adjacent the upper end of
the handle. The lower ends of the channel inserts are
correspondingly fitted into short grooves in the lower portion of
the handle as indicated at 60 in FIG. 2. The opposed major slots in
the stem member coincide and merge and together extend entirely
through the stem part 10 but in such case there is preferably
included a pair of cross braces 65 and 66 as shown particularly in
FIG. 2.
Referring again to the mounting of the connecting part 13 the tang
14 has roughened opposed edges which may be saw teeth as indicated
at 70 and 71. The axial slot 72 for receiving the tang 14 is
provided with opposed ribs 73 and 74 leaving small channels 75 at
each side of the rib (FIG. 4). It will be understood that for a
handle adapted to be embodied in a razor the dimensions will be
relatively small, the width of the tang between peaks of the
opposite saw teeth 70, 71 being in the range of about 0.200 of an
inch. This width will be somewhat greater than the distance between
the ribs 73 and 74 as initially formed and consequently when the
tang is forced into the axial slot the teeth will be embedded in
the ribs 73 and 74 as indicated in FIG. 4 and to the extent
required the plastic material of the ribs 73, 74 and may flow
laterally into the grooves 75. The handle is composed of a suitable
plastic material such as an appropriate grade of polystyrene having
a homogenous molecular structure which responds to the memory of
its former molded geometry, and after tang 14 is fully seated the
displaced plastic forced into grooves 75 will partially return to
its original geometry between the saw teeth 70 and 71 so that
retraction of tang 14 is difficult.
As heretofore mentioned the main stem part 10 is preferably
composed of plastic material such as polystyrene. The trim inserts
11 and 12 are of elastic material such as metal and may be
decoratively finished or coated as with chromium plating, and being
thereby of a color contrasting with the stem part 10. The other two
sides of the main stem are preferably finished in decorative manner
as by serrations 80, 81 extending transversely across the stem
member the kerfs extending inwardly from each corner, those from
one corner registering respectively with those from the opposite
corner but separated at the center line by a flat longitudinal
strip 82. FIG. 5 is a section taken through the bottom of the kerfs
and FIG. 6 is a section taken through the ribs between the kerfs.
Preferably for appearance purposes each longitudinally extending
corner is cut out as indicated at 83.
The serrations terminate at the ends of the inserts 11 and 12 but
the bottom end section 84 has on opposite sides a pair of flat
longitudinal strip areas 85 which may bear desired indicia or logo
such as a trade name.
As indicated generally in FIG. 2 the handle is adapted to support a
double edge safety razor head 15 with opposed cutting edges. The
connector part 14 has a body part which is generally rectangular in
cross section with a pair of opposed flat sides adapted to receive
desired indicia. In the case of the razor in the present case it
bears on one side the Roman numeral I and on the opposite side the
Roman numeral II whereby the user can identify and select the razor
edge desired as for example he may use the side I until it becomes
dull and then use the side II.
Since various changes may be made in the razor shown and described
herein and different embodiments of the invention could be made
without departing from the scope thereof, it is intended that all
matter contained herein shall be interpreted as illustrative and
not in a limiting sense.
* * * * *