|Publication number||US2615308 A|
|Publication date||Oct 28, 1952|
|Filing date||Oct 21, 1949|
|Priority date||Oct 21, 1949|
|Publication number||US 2615308 A, US 2615308A, US-A-2615308, US2615308 A, US2615308A|
|Inventors||Irvin A Thorns|
|Original Assignee||Irvin A Thorns|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (10), Referenced by (15), Classifications (15)|
|External Links: USPTO, USPTO Assignment, Espacenet|
I. A. THORNS SECTIONALIZED PORTABLE ICE STAGE Oct. 28, 1952 Filed Oct. 21. 1949 5 ow W m e mm m r .H W f V w Oct. 28, 1952 l. A. THdRNs SECTIONALIZED PORTABLE 1cm STAGE.
2 SHEETS-SHEET 2 Filed Oct. 21; 1949 FIB ' INVENTOR. lQV/N 7. THOENS RTIOQNEVS Patented Oct. 28, 1952 UNITED STATES PATENT OFFICE SECTIONALIZED PORTABLE ICE STAGE Irvin A. Thorns, Los Angeles, Calif. Application October 21, 1949, Serial No. 122,693
characterized by its simplicity, lightness, inexpensiveness and the presence of a large number otsmall air spaces in the elements to provide good heat insulating properties.
Still another object of the present invention is to provide an improved structural element having vthe characteristics mentioned in the above two objects, and which serves to provide a portable ice skating rink having a plurality of similar sections, each of which may be easily and readily assembled to conduct refrigerant fluid such as Freon gas, liquid ethylene glycole, Prestone', etc., through all of the sections.
Yet another object of the present invention is to provide an improved protable ice skating rink comprising a plurality of easily assembled sections, the sections being easily adapted for securingon the outer edge thereof an illuminated rail.
- Still another object of the present invention is to provide an improved portable ice skating rink, characterized by its capacity to withstand heavy loads but which yet has high heat insulating properties.
- Another object of the present invention is to provide an improved portable ice rink construction of-great flexibility which uses readily dismantlable, floor sections, any number of which are adapted to be quickly set up to provide a rink with thejrequired area, the sections being interchangeable and incorporating the same fluid conduits and fluid inlets and outlets which are readily connected together for the flow of fluid through the assembled sections.
Another object of the present invention is to provide an improved portable ice rink construction which is capable of producing a sheet of ice on the upper or prime surface thereof within a relatively small time, this result being obtainable with my new construction which, due to the insulating efficiency of the sealed insulated panel provided, a minimum amount of material has to be chilled before theice is formed.
- ing or taking away sections and their associated Another object of the present invention is to provide an improved portable ice stage, the sections of which include insulating material having. a large number of air spaces, with the air spaces; sealed from the atmosphere.
Still another object of the present invention is to provide an improved ice stage-having features mentioned in the next preceding object, characterized further by the fact that such insulation is encased within a bottom cover plate and. a top cover plate, with the edges of such cover plates overlapping, and insulating resilient material be: tween such edges to allow thermal-expansion of the cover plates and yet sealing at all times the insulation from the atmosphere.
Still a further object of thepresent invention:
is to provide an improved panel of the type speci fled, which includes two invertedcover members with their overlapping edges having the resilient insulating material ther-ebetween to seal the in-. terior space defined by such cover members, the, interior sealed space being filled with heat insulating material for transmitting stresses from one cover plate to the other, and such insulation having a coiled pattern extending therethrough with the ends of such coil extending through the,
Yet another object of the present invention is to provide an improved panel of the type mentioned above, one or more of which may be arranged as a unit and served by single relatively small compressor units so that the size of the ice stage, for example, may be, varied at will by addpower plants or compressor units.
Yet a further object of the present invention is to provide an improved panel of the character described which is portable together with its associated insulating material, the insulating material being sealed from the atmosphere to prevent the formation of frost within theinsulating material.
Yet a further object of the present invention is to provide an improved panel of the type -described in which adjacent metal faces are -in-,
sulated, one from the other, and serve as a casing for internally disposed insulation and coils.
Still another object of the present invention is to provide an improved technique for produc-' ing panels of the type mentioned in the next preceding object, characterizedv by the fact that no welding or riveting of adjacent face plates to each other is required.
Still another object of the presentinvention...
is to provide an improved. portable icerinkisol constructed that the entire pan produced by asporates an insulated honeycomb construction of kraft paper for, not only insulating the ice from the floor upon which the honeycombed paper rests, but also to transmit all of the stresses from the top of the rink to the floor.
The features of the present invention which are believed to be novel are set forth with particularity in the appended claim. This invention itself, both as to its organization and manner of operation, together with further objects and advantages thereof, may be best understood by reference to the following description taken in connection with the accompanying drawings in which:
Figure 1 is a top plan view of an ice skating rink embodying features of the present invention,
Figure 2 is a sectional view taken on a line corresponding to the line 22 of Figure 3, but of an intermediate section of the ice skating rink shown.
in Figure 1,
Figure 3 is a sectional view taken substantially on the line 3+3 of Figure 1', and
Figure 4 is a perspective view of a portion of one of the rink sections shown in Figure 1.
While specific reference is made herein to a portable ice rink construction, it will become apparent that the individual sections of such rink, described hereinafter, may find utility in other environments such as in refrigerated railroad cars, trucks and other installations wherein such sections may be used either as floor, wall or ceiling elements to heat or cool the adjacent space, depending upon whether or not heating fluid or cooling fluid is pumped through the conduits of such sections.
Referring to the specific construction shown in the drawings, the ice rink shown therein includes, in Figure 1, the four intermediate sections I0 and opposite end sections II, l2 which define a rectangular area of different dimensions, depending upon the number of such intermediate sections Ifl. The outer periphery of the area thus defined is enclosed by the rails I i, I5, I6 and I! which are bolted to adjacent sections and to each other at their adjoining ends to press the sections I0, II and I2 together. Each one of the sections I0, I I and I2 have a fluid con duit I8 extending therethrough, as shown in Figure 2. The fluid conduit I8, adapted for the passage of dried cold gas therethrough, includes two inlet openings I9, 23 and a single outlet opening 2|. I
.The inlet openings I9, 20 are connected respectively through pipes 23, 24 to the valve 25, the inlet opening of which is connected to the inlet pipe 29 through the serially connected drier and valve 3|. The outlet'pipe 2|, on the other hand, is connected to the valve 32a and the outlet manifold 33.
I It is noted that the conduit I8 takes a serpentine, sinuous path through the section and extends from the inlet opening I9, first to the left of the section Ill and then generally to the right of the section, taking 15 passes in all before the fluid leaves the outlet 2 I. It, is noted further that the outlet 2| serves as ajoint outlet for the fluid entering the inlet openings I9, 28.
Each of these sections it are approximately 42 /2 inches wide by 3 inches thick and approximately 20 /2 feet long, so that a portable ice stage having an area of approximately 20 feet by 21 feet may be formed by assembling six sections.
The refrigerant conduit I3 is supported on a paper honeycomb construction 32 and is in heat conducting relationship through the thermal mastic metallic material 3li with the upper aluminum plate or pan 35, upon which water is initially sprayed to produce ice.
The honeycombed paper construction 32 preferably consists of an expanded kraft paper honeycomb to which is bonded an aluminum floor plate 36 adapted to rest directly on the wooden fioor or other type of floor upon which the ice rink is disposed, with closed air spaces provided by the honeycomb construction separating the floor plate 36 from the pan 35, the upper exposed surface of the pan 35 constituting the prime surface. These honeycomb paper panels 32 are routed out as indicated at 38 and 39 to accommodate the refrigerant tubes I8. Preferably, such composite panels are assembled in the following manner, first, the honeycomb panel is routed as indicated at 38 and 39 in Figure 3,.to accommodate the tubes IB, .the routing being suniciently deep so that the upper surface of the later inserted refrigerant tube 8 is practically flush with the upper surface of the honeycomb construction 33, but not too deep to prevent the weight 'of the tubes I8 from being transmitted directly to the paper honeycombed construction. After this routing operation both sides of the honeycombed material is coated with glue and the routedside is covered with fabric such as cheesecloth 43. Then this cheesecloth is coated with glue. Thereafter the adjacent sides of the pan 35 and fiocr plate 35 are each glued. All glued surfacesare then cured by subjecting them to a temperature of 220 F. for a period of approximately one hour. After this curing process the tube I8, Welded to form the pattern shown in Figure 2, is laid in the routed out portions indicated at 38 and 39 in Figure 3, and on top of the previously glued cheesecloth 4U.
It is noted at this time that the pan 35 and floor plate 36 each have their four edges bent upwardly in a direction perpendicular to their plates to form small shallow dished structures, the walls of the pan 36 having the general reference numeral 36A, and the walls of the member 35-having the reference numeral 35A. I
Continuing, the pan 35 and floor plate36 are then placed in position with the walls 36A disposed within and separated from the outer walls 35A along the perimeter. of'the assembly. While in this position a thermal mastic insulating cement I0, such as Prestite, is pressed between the spaced walls 35A, 36A and the entire assembly is then subjected to a temperature of approximately BOOF. for twentyminutes, while forces are being exerted on the honeycomb material 32 by applying force between the pan 35 and floor plate 36. In this process the Prestite material I0 is hardened and provides a heat insulation barrier between the bottom plate 36 and top plate 35 along the perimeter of the section. This material it! serves also to bond the members 35, 36' one to the other. Further, these two sections 35, 36, the interior of which is sealed fromthe atmosphere by the thermal mastic cement 10, is under subatmospheric pressures, since, during the aforementioned process wherein the assembly'is' maintained at 300 F., some of the air originally lif. outtoffthe interior; subsequently, when the asseinbly hascooled theair contracts to produce the subatmosphericf: pressure ;within the sealed section; jjj; Thereafter the j section is disposed in a position inverted witli'respect to'the' position shown iri"l-"igure2, "and'thermal mastic material 34 is This'therm'al mastic material 34 serves not only to provide a good heat path from the coil l8 to the top plate 35, but is disposed between the pipe ends [9, 20 and 2|, on the one hand, and between the adjacent glued cheesecloth 40, on the other hand,'to thereby seal the space surrounding the coil I8 from the atmosphere. 6
The individual sections In thus made may be used as shown in Figure l, or may be used to line the walls 'or ceiling of an enclosure for heating or cooling the! same as desired. One advantageof this particular construction is that the inlet and outlet openings for each section are both on 'one end of'th'e 'section,"so that allof the plumbing andpipe fitting maybe accomplished at one end of the assembled sections, leaving the other end entirely free 'of pipes'extending therefrom.
,In" assembling the sections l0, they are laid side by side in abutment, and the joint between adjacent sections is first sealed with a thermal mastic cement 63 to make the butt joints watertight. The cracks betweensuch adjacent sections interior of the as semblyexpands and moves rink, as the case may begand is bolted'or fes are sealed, refrigerant is passed through the as sembled sections to cool the same, and simultaneously water is sprayed on top of the pan 35 to produce the desired layer of ice on top of the pan.
Desirably, the individual sections In and end sections H and 12 are clamped together by the rink rail members l4, l5, l6 and i1.
As shown in Figure 3, the rink rail member i1 is bolted to the end section II by means of bolts 45 which extend through the outer skirt '4'! of the rail l1 and are threaded into nuts welded to the downwardly extending apron portion 35A of the pan 35, with resilient material such as rubber 46 disposed between the aprons 35A and 41, In similar fashion, the opposite r-ail member I5 is bolted at specified points along the side of the opposite end section [2. Further, in similar manner, the end rails l4 and I6, of the same physical dimensions and construction as the rails l5 and II, are bolted to the ends of each of the intermediate sections Ill as well as the respective ends of the end sections II and I2, with similar resilient material 46 disposed between such sections and the corresponding rails l4, it. These rails l4, I5, [6 and I1, constructed as shown in Figure 2, are adapted to rest on the adjacent end sections and are made hollow to incorporate lighting tubes 50 for purposes of illumination.
Thus, lights 50 of the tubular type may either be of the incandescent or fluorescent type, energized in conventional manner, with their lon-.
gitudin-al axes extending parallel to the longitudinal axes of the rails and being protected by a plastic transparent bendable cover member 5|, the opposite side edges of which may be bent and inserted into the sockets or grooves HEB, 11C in the rail structure.
The rail itself includes also a wooden beam 54 extending the full width or length of the desired tened by other means to the skirt member-41 which is covered with a decorative stainless steel or aluminum cover sheet 52, having onefof its ends adapted to resiliently encompass the'lovver end of the skirt member 41, and its upper end fabricated to form the socket NB. This decorative cover member '52 may be bolted to the end section ll by the bolts'45. Also 'adecorative material such as stainless steel or polished aluminurnis theoover' member 56, the lower endof which partially encircles the'wooden' beam Bi disposed betweensuch*beam"-54' ande t upper end of such de'c the "-pan m orative cover 56 being fabricated to-provide the aforementioned socket} or groove llQf receiving the transparent cover member 5|.
Preferably, the junction poin watertight by placing a" th-ermalmastic cement 62' therebetweengin the same manner as is the thermal mastic cement 63 disposed over" the joints between adjacent sections I0, H and 12."
It is' observed inFig'ure 1 that' -there is provideda pairof refrig'erant'inlet manifolds 29 and a pair of refrigerant outlet lines"33;'fand these lines may be coupled through flexible rubber hose fittings to the refrigerant equipment fri'gerated 'at the same" time.
frigerant pipes, it is possible to use, for'theintended purpose of maintaining ice on the com-= plete rink, a "relativelysmall capacity inexpen-- sive refrigerating equipment which may be alternately valved to one pair of pipes 29, 33 and then to the other pipes 29, 33'.
Alternatively, there may be a relatively small machine provided connected to one pair of lines 29, 33, and a second relatively small machine connected to the other pair of lines 29, 33. By thus providing two refrigerant machines instead of one refrigerant machine, the refrigerant units are relatively small and conveniently portable, and provide a flexible arrangement in which either half or both halves of the rink may be refrigerated.
It is apparent that once the equipment is assembled, as described above, it may be conveniently and quickly disassembled by removing the bolts 45, uncoupling the various pipe fittings and simply moving the sections III, II and I2 apart one from the other, breaking the seal provided by the thermal mastic cements 62, 63.
Although I prefer, as described hereinabove, to utilize form fitting cheesecloth between the top plate 35 and honeycomb material 32, as a modification such cheesecloth may, in fact, be substituted by a metal sheet of corrugated appearance, shaped in the form of the cheesecloth 40 shown in Figure 2, to serve in like manner as a sealing member for the entire upper surface of the honeycomb material 32.
'It is noted that all of the stress is transmitted from the top plate 35 to the bottom plate 36 through insulation 32.
It is observed further that the thermal mastic insulating material 16 filling the space between adjacent side walls of the pans 35, 36 allows .rel-ative movement of such elements without breaking the seal therebetween when, for example, the pan 35 is lowered in temperature with respect to the floor plate or pan 36. In
t' or the metal cov r plate 56- with the pan member 35i s made other words; the thermal mastic cement 10 pro-f vides a good seal for the space defined Within the pans 35, -36 and yet allows unequal thermal expansion between such elements 35, 36. Further, sinc e the interior space between pans 35, 36-is below atmospheric pressure,,for reasons described above, the pans 35, 36 tend to move towards, one another, and are held together without rivets or welding therebetween.
.Although I prefer by far to utilize the honeycomb material 32 as the insulation medium and the means whereby forces are transferred: from the top plate 35 to bottom plate 36, other insulating materials may be substituted therefor such as, for example and not as a limitation; Celotex, Styrofoam, Temlok, Firtex, cellular rubber board, cork insulating board. I
While the particular embodiments of the present invention havebeen shown and described, it will be-obvious to those skilled in the art that changes and modifications may be made without departing from this invention in its broader aspects and,therefore, theaim in the appended claim is tocover all such changes and modifications as fallwithin the true spirit and scope of this invention.
In a portable rink construction of the character described, comprising: a plurality of sections disposed in side by side relationship, each of said sections comprising a honeycombed paper parallelepiped with air spaces extending the full thicknessthereof, a metallic pan on one side and a floor plate on the other side of said parallelepiped to close off said air spaces, said honeycombed paper being efiective to transmit forces directly, from said pan to said floor plate, ;a
thermal mastic cement disposed over saidjoint to seal the space otherwise present between adjacent sections, a rail extending along the perimeter of said sections and being releasably fastened to'. the outer sides of the end-sections and to eachone of the adjacent ends of the sections, and a thermal mastic cement between said rail and the adjacent pan to seal the junction therebetween against Water leakage.
IRVIN A. THO RNS,
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|U.S. Classification||62/235, 472/90, 156/292, 165/56, 362/223, 62/458, 428/116, 165/907|
|International Classification||F25C3/02, E01C13/10|
|Cooperative Classification||Y10S165/907, E01C13/105, F25C3/02|
|European Classification||F25C3/02, E01C13/10B2|