U.S. patent number 3,658,071 [Application Number 05/058,786] was granted by the patent office on 1972-04-25 for hair roller with range temperature indicator.
This patent grant is currently assigned to Westinghouse Electric Corporation. Invention is credited to Robert A. Wise.
United States Patent |
3,658,071 |
Wise |
April 25, 1972 |
HAIR ROLLER WITH RANGE TEMPERATURE INDICATOR
Abstract
The invention provides a hair curler wherein a bimetallic
element is utilized as a temperature indicating means in
conjunction with a dial arrangement so as to provide a range of
temperatures for user selection based on her personal hair and/or
skin characteristics.
Inventors: |
Wise; Robert A. (Edison,
NY) |
Assignee: |
Westinghouse Electric
Corporation (Pittsburgh, PA)
|
Family
ID: |
22018914 |
Appl.
No.: |
05/058,786 |
Filed: |
July 28, 1970 |
Current U.S.
Class: |
132/233;
219/222 |
Current CPC
Class: |
A45D
2/36 (20130101); A45D 4/16 (20130101) |
Current International
Class: |
A45D
2/00 (20060101); A45D 2/36 (20060101); A45D
4/16 (20060101); A45D 4/00 (20060101); A45d
002/12 () |
Field of
Search: |
;132/33R,40,41,9
;219/222,506 ;116/114.5 ;236/94 ;73/363.7,343 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Mancene; Louis G.
Assistant Examiner: McNeill; Gregory E.
Claims
What is claimed is:
1. A hair roller including:
a. an integrally molded cylindrical, substantially hollow body;
b. an integrally molded end cap for said body, said end cap
displaced from the termination of said body;
c. a space provided between said end cap and said termination of
said body;
d. a stepped bore provided by said space; including an enlarged
bore portion,
e. an index means disposed over said end cap and substantially
enclosing said space;
f. said index means being disposed in said enlarged bore portion
and being maintained in integral molded cylindrical, substantially
hollow body by an inturned flange formed in the outer termination
of said enlarged bore portion;
g. a bimetallic spiral thermostatic means disposed in said space;
and
h. an end of said bimetallic spiral means providing an indicator
for readout of a series of temperatures of said hair roller.
2. The hair roller set out in claim 1 wherein:
a. said index means is rotatable in said enlarged bore portion for
positioning with respect to said indicator formed by said
bimetallic spiral means; and
b. said inturned flange is then formed for holding said index means
in a selected position relative to said indicator formed by said
bimetallic spiral means.
3. The hair roller set out in claim 1 wherein:
a. said bimetallic spiral means has an inner and an outer end;
b. said inner end is fixed to said body; and
c. said outer end provides a movable indicator for indicating
temperatures.
4. The hair roller set out in claim 3 wherein:
a. said end cap includes an integral stem; and
b. said stem fixedly mounts said fixed inner end of said bimetallic
spiral.
5. The hair roller set out in claim 4 wherein:
a. said stem includes groove means; and
b. said fixed end of said bimetallic spiral is disposed in said
groove means.
6. A hair roller including:
a. a cylindrical, substantially hollow body;
b. an end cap for said body displaced from the termination of said
body;
c. a space provided between said end cap and said termination of
said body;
d. an index means placed over said end cap and enclosing said
space;
e. a bimetallic spiral thermostat means disposed in said space;
f. said bimetallic spiral thermostat means including a moving end,
said moving end providing a pointer means for indicating for
readout of a series of temperatures of said hair roller.
7. A hair roller including:
a. a temperature indicating means;
b. a hair roller body;
c. said temperature indicating means mounted in said body and
including a pointer means for movement proportional to an attained
temperature; and
d. an index means for relating attained temperature to a desired
temperature range for hair curling purposes.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to the hair curling art and, more
particularly, relates to a hair curler having a temperature
indicator means mounted on the rollers.
Description of the Prior Art
It has been found important to control the temperature to which
hair rollers are heated so as to eliminate discomfort resulting
therefrom and also to limit the splitting of the ends of the hair
by overheating. Prior art attempts at controlling the temperature
at which curling occurred, have utilized thermostatic control of
the heating means which heated all of the individual hair rollers
such as shown in U.S. Pat. No. 3,486,000 issued Dec. 23, 1969 or
have utilized temperature indicators on the rollers such as colored
dots which change color when the hair roller has reached a desired
temperature, or, alternately, have utilized latch arrangements that
release the hair rollers from the heating platform once a preset
temperature for hair curling has been reached such as shown in U.S.
Pat. No. 3,415,254 issued Dec. 10, 1968.
However, none of the aforementioned hair curler arrangements make
positive provision for user-temperature preference once the hair
rollers have been heated to a preselected hair curling temperature.
Accordingly, it would be advantageous to provide a hair curling
arrangement wherein at least one or perhaps all of the hair roller
units provided a temperature range indication means so that the
user could select that portion of the range most advantageous to
her, personally.
SUMMARY OF THE INVENTION
According to the principles of the invention individual hair
rollers are provided having a bimetallic coil thermostatic element
mounted adjacent each of their tops. An integral pointer, formed by
a portion of the bimetallic coil, is included and a dial placed
over the top which may be indexed relative to the pointer. The dial
contains indications which are related to hair quality, such as:
fine, medium or coarse or such as: dry, regular or oily. Thus, a
range of readings is provided so that the user may select hair
rollers as they reach the temperature which is most adapted for her
own particular hair characteristics.
It is contemplated, in the practice of this invention, that a
plurality of sizes of hair rollers will be provided, such as:
small, medium and large and that these hair rollers will be mounted
on a conventional heating element including stems, integral with
the base heating member so that the various sized rollers will
reach the desired temperature at different rates and thereby
different times. Of course, the small rollers would be first to
reach the proper curling temperature, then the medium rollers and
finally the large. The user could then conveniently select the
rollers as they come to temperature and place them in her hair,
rolling the hair around each of the rollers to finally provide a
hair style arrangement suitable to her.
DRAWING DESCRIPTION
For a better understanding of the invention, reference may be had
to the preferred embodiment, exemplary of the invention, shown in
the accompanying drawings, in which:
FIG. 1 is a perspective view of the hair rollers arranged on their
heating platform;
FIG. 2 is a partial cross-sectional view of a single hair roller
embodying the invention;
FIG. 3 is a top plan view of the heated hair roller of FIG. 2;
and
FIG. 4 is a top plan view of another type of dial which may be
utilized in carrying out the principles of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
There is shown in FIG. 1 a series of hair rollers 10 which include
my invention mounted on a heating platform 12. The heating platform
12 has a series of metallic stems 14 protruding through a top plate
13, with these stems being of such diameter to accommodate the
smallest and largest sized rollers 10. Top plate 13 has disposed,
beneath it and within a shell-like enclosure 16 of heating platform
12, a heating element (not shown) which transfers its heat to the
metallic stems 14 for eventual heating of the rollers 10. The
rollers 10 receive heat through conduction and radiation from the
stems 14. The shell-like enclosure 16 also conveniently may mount a
thermostat (not shown) which is set to open at some upper limiting
temperature to prevent the overheating of the base 12 or melting
the hair rollers 10.
The rollers 10 are comprised of a hollow cylindrical body 18 made
of a plastic material such as glass filled polypropylene with a
single, closed end 20 and with this end spaced somewhat inwardly
from the outer termination of the roller 10. Extending generally
axially centrally relative to the linear extent of the roller 10 is
a stud member 22 formed integral with the body portion 18 and
integrally attached thereto at the end 20 to extend outwardly
therefrom. The stud member 22 terminates short of the outer
termination of the roller 10. The body 18 of hair roller 10 is
completed by a series of outwardly extending teeth 24 formed
integrally with the body 18 and spaced around the outer periphery
of the roller so as to provide a means for engaging and catching
within the hair being curled therearound.
In carrying out the principles of my invention, a thermoresponsive
means 26 is disposed adjacent the outer ends of the hair rollers
10. This thermoresponsive means consists essentially of a
bimetallic spiral 28 which is mounted on the stud member 22 by
being inserted in a diametrical groove 30 formed therein. An inner
straight end 32 of the bimetallic spiral 28 is received within this
groove and the remainder of the bimetallic spiral is disposed in a
series of even larger coils that extend around the stud member 22.
At the outer periphery of the bimetallic spiral 28 a generally
straight end 34 is provided that extends substantially outwardly at
a right angle from tangency with the closest adjacent portion of
the outer coil 33. This end of bimetallic spiral 28 forms the
indicating means or pointer for temperature reading by the user of
the hair roller 10.
Because of the inward displacement of the end 20 of the body 18
from the outward termination thereof, a space 36 is provided within
which the bimetallic spiral 28 is mounted for movement of its end
34. This space is then sealed by an indicator dial 38. The
indicator dial 38 is placed in a non-removable manner on and within
the body of the roller 18 by means of a flange 39 which is formed
in the said body, this flange being generally annular so as to
fixedly retain the indicator dial 38 with the body 18. The
assemblage of these two elements is obtained by inserting the
indicator dial 38 in an annular bore or enlarged bore portion 40
formed in body 18 and terminated by a face 41 so that the space 36
represents a stepped bore before assembly of the indicator dial 38.
The indicator dial 38 is held therein (in the bore 40) against the
face 41 by a pressurized heating operation which turns the flange
39 downwardly against the indicator dial 38. The periphery of the
indicator dial 38 is thereby fixedly held and retained to the body
18 by the flange 39. Just prior to this assembly operation, the
hair roller 10 is calibrated by rotating the dial 38 so that it is
located relative to the end 34 of bimetallic spiral 28 so as to
give a proper reading of temperature as the hair roller is
heated.
The dial 38 itself, may include a series of indications thereon
such as "F," "M" and "C" indicating that the temperature setting is
for fine, medium and coarse hair. A portion of the dial shown at 42
may be blanked out as is shown in FIG. 3 and FIG. 4 so that the
bimetallic spiral 28 is not observable through the transparent dial
38 except for the extending end 34 which serves as the indicator
means that moves between the aforesaid indices "F," "M" and "C" as
the roller heats from hot to hotter.
An alternate indicator dial 44 is shown in FIG. 4 wherein the
indications utilized are "D," "R" and "O." These indications may be
related to dry, regular and oily hair and may alternately be used
as a guide by the consumer in the proper use of the roller 10.
Removal of the roller 10 from the metallic stems 14 then may be had
when the indicator 34 has moved to or close to that indication
which best serves for the setting of the user's hair.
The operation of the hair roller 10 is rather simple. The consumer
may be guided in its usage by the indicator end 34 moving into the
proper temperature range as indicated by the indices "F," "M" and
"C" or "D," "R" and "O," contained on the dials 38 or 44.
Essentially the operation is as follows: the hair rollers 10 are
placed upon the base 12 and the heating element contained therein
(not shown) energized to provide a heating effect through the
metallic stems 14 to each of the hair rollers 10. The smaller hair
rollers 10 will obviously reach curling temperature first so these
would be the first ones selected by the user. They would be removed
from the base 12 as the indicator end 34 reached that temperature
range in which the user had found the proper hair curling
temperature. Next, the intermediate sized hair rollers 10 would be
removed and these would be utilized, and finally the large size
hair rollers 10 would be removed and utilized. Thus, each series of
rollers would be removed from their metallic stem 14 upon the
temperature range being reached which was best for the user of the
hair curling appliance.
It should be obvious that the hair rollers 10 and indicating dial
arrangement provided therein offers a temperature selector range
for the user which is not available in prior art hair curlers and
that such a range provides a large number of different temperatures
which the user of the appliance may select for proper hair curling
temperature. It should also be obvious to one skilled in the art
that many modifications can be made to the invention described and
that many of these modifications will fall within the spirit and
scope of the description offered.
* * * * *