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Патент USA US3034222

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May 15, 1962
'
c. B. sPASE
METHOD oF MAKING A THERMAL UNIT
3,034,207
United States Patent()
1
rice Y
3,034,207 '
i Patented May 15, 1962
2
well known in the art, and the specilicv material used
3,034,207
Charles B. Spase, Syracuse, NSY., assignor to Lipe-Roll
METHQD 0F MAKENG A TIERE/IAL UNIT
way Corporation, Syracuse, NX., .a corporation of
l
Original application May 13, 1958,- Ser. No. 734,944, new
Patent No. 2,924,083, dated Feb. 9, 1960. Divided
and this application Ang. 21, 1959, Ser. No. 837,316
4 Claims.
(Cl. 29-405)
_
forms no part of the present invention.
The method of manufacture is as follows: Referring to
FIG. 2, there may be seen a pair of cup-like members
60’ Aand the cup-like member 63I having the grooves 65
on the periphery of the skirt 64 thereof. Member 63’ has
an end wall 66 that is oppositely disposed to an end Wall
61 ofthe member 60’. The skirt 64 of member 63’ is
telescoped within and is relatively shorter than the -skirt
`
10 62’ of the member y60’. The end wall 66 has a threaded
This application is a division of S.N. 734,944, filed May
13, 1958, now Patent No. 2,924,083, granted February
9, 1960.
.
The present invention relates »to a method of ymaking
a thermally expansible unit that excludes air and other
foreign matter from the space occupied by the thermally
expansible material in the thermally responsive unit.
Prior art processes of making thermally expansive units
have required in general expensive molds thus making
the units unduly costly, and necessitating large invest
ments for equipment.
hole `67 therein. As may be seen, a relatively large cham
ber 69' is formed between the end walls and the skirts of
the members 60' and 63’.
Having 'thus assembled the above described parts, the
material 70 is poured into the chamber 69’ through the
hole 67, this operation taking place with both the cup- ,
shaped member 60.’ and the cup-shaped member 63’ and
the material 7l) at approximately 70° F. It will be re
called that at` this temperature the material 70 is a
20 solid, preferably a crystal granulate, the thus iilled de
vice being shown in FIG. 3.
»
Further, known methods have not invariably provided
for the exclusion of foreign matter from the expansible
The parts as thus assembled, and with the» chamber
69’ lilled withpthe material 70, are then heated by any
material chamber, with consequent adverse effect on the
convenient means, a burner `71 being shown for this
25 purpose in FIG. 4. This serves'to liquefy the material
performance of the unit.
It is an object of the present invention provide a
70 as shown in FIG. 4. Note that the hole 67 is -upper
process for making a thermally expansible device that is
most during this heating operation.
Y '
~
.
' -
relatively simple.
Thereafter, ,the cup-shaped member 63’ is telescoped
Another object of the present invention is the pro
within the skirt 62’ -oflthev cup-shaped member 60’ until
vision of a process for making a thermally expansible 30 the skirt 64 thereof bottoms on the end wall 61 lof the
device that does not require the manufacture of molds
cup-shaped member 60'; this action extrudes- the liquid
or the use of equipment that is capable of exerting high
material 70 upwardly through the hole 67 in the end wall
pressures.
_
A further object of the present invention is to provide
a method of making a thermally expansible device that
V66 of cup-shaped member 63’.
While at ,the elevated temperature, a ilush screw or
plug '68 is placed in the hole 67, and it may thus be seen
will positively exclude the introduction of air or other
that the unit has been sealed without any air in the unit
foreign matter into thc chamber that contains the ther- n
and without any foreign material getting into the cham
vmally expansible material during the manufacture of
ber that is occupied by the material 70; the unit is then
the device.
cooled.
Other objects and the nature and advantages of the
The members 60’ and 63’ are then cut along the plane
instant invention will be apparent from the following de
72 shown in FIG. 5, this of course removing that part
scription taken in conjunction with the accompanying
of the skirt 62’ of cup-shaped member 60’ that extends
drawings, wherein:
beyond the end wall 66 of the member 63". This cutting
FIG. l is a longitudinal cross-sectional View of a
action also places a champered edge on the member 63’
thermally responsive device made in accordance with the 45 so that it is in fact now the member 63 of the completed
process of the present invention.
unit.
\
FIG. 2 is a longitudinal cross-sectional view showing a
It will be understood that the cup-shaped members are
ñrst step in the process of -making the device of FIG. l.
cylindrical, and preferably that they are of a circular
FIGS. 3, 4- and 5 illustrate successive steps in the
cylindrical form, although other shapes are possible.
50
manufacture of the device of FIG. 1.
There has also been provided a simple and efficient
Referring now to the drawings wherein like reference
method of manufacturing a thermal unit that can be ac
characters are used to designate like or corresponding
complished with a minimum of equipment and which
parts throughout the several views, there is shown in
method requires no forms nor high capacity presses.
FIG. l a thermal unit S2 which consists of an outer cap 55
It will be obvious to those skilled in the art that various
sule member 60 that is cup-shaped and has end wall 6l
changes may be made without departing from the spirit
and an open-ended skirt 62 extending therefrom. Tele
of the Iinvention and therefore the invention is not llimited
scopically received within the skirt 62 of the capsule mem
to what is shown in the drawings and described in the
ber 60 is a plug member 63 having a skirt 64, the skirt
specification but only as indicated in the appended claims.
64 having a plurality of circumferentially extending 60 What is claimed is:
grooves 65 on the exterior periphery thereof. Plug mem
1. The method of making a thermally expansible de
ber 63, which is also cup-shaped, has an end wall 66
vice comprising telescopically assembling in relative re
having a threaded hole 67 therein, and a plug 68 in said
ciprocable, sealed relation a pair of cup-like members,
hole 67.
each having an end wall and a skirt in telescopic relation
The end wall 66 of plug member 63, the end wall 61 65 ship with theV skirt of the inner member being shorter
of capsule 60, and the interior of the skirt 64 of plug
than the skirt of the outer member and with said end walls
member 63 form a chamber 69 in which there is posi
oppositely disposed, whereby to form a chamber between
tioned the thermally expansible material 70. This mate
v7said end walls and the skirts of said members, introduc
rial is preferably solid at ordinary temperatures, or room
ing through a hole in the end wall of said inner member
temperatures but becomes liquid at approximately 300° 70', and into said chamber at ordinary room temperature a
F., and upon further heating of the material 70 above
material that is in the solid state at ordinary room tem
360° F., the material 79‘ will expand. Such materials are
pertures and liquefies into an expansible liquid at elevated
3,034,207Y
Y temperatures, heatingy said assembled parts with said hole
uppermost to at least the liquefaction temperature of said
said chamber at ordinary room temperature a material
that is in the solid state at ordinary room temperatures
and liqueñes into an expansible liquid at elevated tem
peratures, heating said assembled parts to at least the
material, further telescoping said members until the skirt
of the inner member bottoms on the end wall of the
_outer member andV thereby extruding liquid material _upf
>liquefaction temperature of said material, further telescop
Wardly through said hole, plugging said hole, cooling lsaidV ~ V ing said members until the skirt of the inner member bot
v -assembly to ordinary room temperature, and then remov- '
toms on the end wall of the outer member and thereby
ing that part of the skirt of Vthe outer member that eX
vextruding liquid material through> said oriiice,` closing
tendsbeyond the end wall of the inner member.
f
2. The method _of 'making aV thermallyv expansible _ de
‘said oriíice, cooling said assembly to ordinary room tem
10 perature, and then removing that lpart of the skirt of the
l.vice _comprising .telescopicaily assembling in relative Vre
vouter member Vthat extends Vbeyond Vthe end wall of the
ciprocable, sealed~3relation a pair of_fcup-like members, ’
each having an end wall and a skirtïinV telescopic relation
.4;_¿ The'method ofv making a thermally expansible de
innermember.-
’ï«
1
Y
Y
Y
Vice comprising telescopically assembling in relative recip
l ship'with the skirt of the innermember being'shorter'than '
Ythe'skirt` of thefouterfm'emher and with said end walls 15 Vrocable, sealed relation a pair orfvcup-like members, each
oppositely disposed, wherebyto form a-chamber between
having an end wall and a skirt inrtelescopic relationship
said en'd Wallsland the skirts of said members, introducing
with the skirt of >the inner member being shorter than the
skirt of the outer member and With said end walls op
positely disposed, whereby. to form a chamber between
Ain the >solid state at ordinary room temperatures and lique 20 said end Iwalls and the skirts of said members, introducing
ñes into an expansible liquidfat elevated temperatures,
through an orifice in one of said members and into said
through an orifice in one of said members and into said
chamber at ordinary room temperature a ’material that is
heating said assembled par'tsïwith’said oriticeluppermost
chamber at ordinary room temperature a material that is 1 l
to atleast the liquefaction temperature of said material,
vfurther telescoping said members Auntil the skirt of the
in the Ysolid state at ordinary room temperatures and lique
Íies into an expansible liquid at elevated temperatures,
inner member bottoms on the end wall of the outer mem 25 heating said assembled parts to at least the liquefaction
ber andl thereby extruding «liquid material upwardly
temperature of said material, furtherl telescoping said
through `said orifice, closing said oriñce, cooling said as
members untilrthe yskirt of the inner member bottoms on
sembly to ordinary room temperature, and then remov
ing that part ofthe skirt of the'outer member that ex
the end wall >of the outer member and thereby extruding
-tends beyond theend wall 'of the inner member.
30
liquid'material through said oriñce, closing said orifice,
and cooling said assembly to ordinary room temperature.
3. The method orf'making a thermally expansible de
vvice comprising telescopically. assembling in relative re
eiprocable,- sealed relation a pair of cup-like members,
References Cited in the tile of this patent
UNITED STATES PATENTS
eachnhaving an end wall and a skirt in telescopic relation
fship with the skirt of the, 'inner member being shorter
`than the skirt of the outer member and with said end walls
oppositely disposed, whereby to form a chamber between
said end Walls and the skirts of said members, introduc
ing through an orifice‘in one of said members and into
35
1,391,878
2,405,201
2,507,466
2,622,443
i 2,806,376
Chaney a____f_ _______ __ Sept. 27,
Franck _; _____________ -_ Aug. 6,
De Craene' ____________ _.. May 9,
Wappner ____________ __ Dec. 273,
1921
1946
1950
1952
>Wood ______________ ____ Sept. 17, 1957
î
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