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Publication numberUS2558759 A
Publication typeGrant
Publication dateJul 3, 1951
Filing dateJan 9, 1946
Priority dateJan 9, 1946
Publication numberUS 2558759 A, US 2558759A, US-A-2558759, US2558759 A, US2558759A
InventorsJohnson Robert H
Original AssigneeJohnson Robert H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Artificial ski chute
US 2558759 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

July 3, 1951 R. H. JOHNSON ARTIFICIAL SKI CHUTE Filed Jan. 9, 1946 Patented July 3, 1951 UNITED STATES PATENT OFFICE 3 Claims. (Cl. 27.2-56.5)

This invention relates to improvements in artificial ski chutes such as are used for the practice of skiing, either indoors or out in the open and it has for its objectto improve the construction of the tracks or slideways thereof.

To this end I have provided a chute for use in the practice of skiing that is provided with an inclined track or slideway whose top is strewn with granules of rigid waterproof material which provide the same with a slippery or lubricous top surface. Any suitable ri id waterproof granular material may be employed but I prefer a synthetic thermoplastic such as polymerized methyl methacrylate commercially known as Lucite with which I preferably mix about fifteen percent of powdered hard wax. Also, I may substitute rice for the Lucite or the like and sometimes I have employed a mixture of rice and synthetic thermoplastic granules.

Other features of my invention ar hereinafter pointed out.

In the accompanying drawings:

Figure 1 is a side elevation of a chute for use in the practice of skiing constructed in accordance with this invention.

Figure 2 is a longitudinal sectional view, full size, of a portion of the slideway of the chute shown in Fig. 1.

Figure 3 is a plan view of a portion of the track or slideway of the chute shown in Fig. 1.

In the drawing, Fig. 1 shows a ski chute measuring about ninety by twenty-four feet as viewed in plan, said chute having an elevated inclined track or slideway l9 comprising a solid floor or substructure H of wood covered throughout its extent by a half-inch layer of felt l2, or other suitable resilient material such for example as sponge rubber, and a layer of heavy canvas l3 covering the felt layer throughout its extent on top of which is strewn a mixture M of loose rigid granules of a synthetic thermoplastic material such as polymerized methyl methacrylate, commercially known as Lucite and powdered wax.

The Lucite, which may be procured in various colors, is prepared for use by grinding the same to about the consistency of coarse sand while the hard wax is reduced to a powder by grinding. Thus prepared these two ingredients are mixed and scattered over the canvas [3 as shown in Fig. 3 and occasionally during or after use of the chute the displaced mixture may be manually swept back into position so as to be more or less evenly distributed.

The top surface of the woven canvas I3 is more or less pitted owing to the weave of its fibrous strands so that it tends to hold the granules and wax against excessive displacement as a ski slides over the same, while the felt layer [2 provides a resilient support for the canvas which serves to cushion a fall on the track or slideway.

The floor ll may consist of transverse planks nailed in position upon longitudinal stringers 15 forming part of the framework of the structure. The felt layer is nailed to floor I I while the canvas layer I3 is made up of longitudinally disposed webs or runners disposed side by side with their upper ends only nailed as at IE, or cemented, in position upon the felt layer in order to avoid the formation of wrinkles. These canvas runners are of lengths to extend from the top to the bottom of the slideway.

The powdered wax serves as a lubricant for the ski and serves to supplement the inherent slipperiness of the Lucite granules. Continued use of the slideway may discolor and soil the granules in which case the mixture may be removed, washed and returned to the canvas.

What I claim is:

l. A ski chute comprising an inclined slideway having strewn upon its top surface loose granules of rigid material of such substantial size and powdered wax.

2. A ski chute comprising an inclined slideway including a solid substructure or floor; a fiat layer of resilient material secured in position upon said substructure or floor; a layer of canvas fixed in position upon the top of said resilient material, and a mixture of loose granules of rigid material of substantial size and wax strewn upon the top surface of said canvas layer throughout the eX- tent thereof.

3. A ski chute comprising an inclined slideway constructed with a rigid substructure or floor; a flat layer of resilient material fixed in position upon said substructure or floor a layer of canvas fixed in position upon the top of said resilient layer and a mixture of loose sand-like granules of rigid material of substantial size and powdered wax strewn upon said canvas layer throughout the extent thereof.

ROBERT H. JOHNSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 910,569 Peco Jan. 26, 1909 1,389,391 Steidle Aug. 30, 1921 2,136,450 Marks Nov. 15, 1938 2,174,716 Bethell Oct. 3, 1939 2,254,482 Heller Sept. 2, 1941 2,265,242 Marks Dec. 9, 1941 2,272,847 Macht Feb. 10, 1942 2,358,963 Davies Sept. 26, 1944

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US910569 *Jun 1, 1908Jan 26, 1909Ida Hill PecoComposition of matter for polishing and dressing floors.
US1389391 *Aug 4, 1920Aug 30, 1921Steidle Joseph PFloor-wax
US2136450 *Apr 2, 1936Nov 15, 1938Du PontPreparation of pigmented plastics
US2174716 *May 26, 1938Oct 3, 1939Hugh F BethellAmusement device
US2254482 *Feb 18, 1939Sep 2, 1941Maximilian HellerElastic artificial sking track
US2265242 *Jul 29, 1939Dec 9, 1941Du PontPreparation of ethenoid resins
US2272847 *Jul 23, 1940Feb 10, 1942Du PontMolding of organic plastics
US2358963 *Oct 23, 1939Sep 26, 1944Cellomold LtdThermoplastic compositions and method of producing the same
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2742288 *Jun 4, 1953Apr 17, 1956Brunel Jacques AChute for sking and tobogganing
US2833001 *Jun 20, 1952May 6, 1958Goodrich Co B FApplied sectional structure for cushioning wall surfaces
US2924455 *Dec 7, 1956Feb 9, 1960Brunel Jacques AArtificial sking mat
US3020811 *Feb 21, 1958Feb 13, 1962Cataphote CorpArtificial snow
US3066580 *May 25, 1959Dec 4, 1962Rudolf AlbertiSki surface and process of forming same
US3091998 *Nov 2, 1959Jun 4, 1963Dow Chemical CoSynthetic ski slope
US3291486 *Jun 26, 1962Dec 13, 1966Dow Chemical CoSki slopes having a surface coating comprising a particulate resinous composition
US3400643 *Feb 14, 1966Sep 10, 1968Holley Plastics CompanyPlastic ski surface structure
US3407713 *Mar 8, 1966Oct 29, 1968Robert S. HeckmanSkimat
US3422732 *Aug 15, 1966Jan 21, 1969York Ruth SArtificial ski mat
US3659845 *Apr 10, 1970May 2, 1972Quinton InstrExercise treadmill and belt support apparatus
US3736847 *Sep 7, 1971Jun 5, 1973Mosher RSynthetic terrain covering
US4156746 *Oct 28, 1977May 29, 1979Establissement AlajexMethod and mixture for producing an artificial skiing track
US5643144 *Apr 29, 1996Jul 1, 1997True Fitness Technology, Inc.Lubrication system for treadmill
US6676530 *Apr 17, 2002Jan 13, 2004Light Wave, Ltd.Contoured variably tensionable soft membrane ride surface for ride attraction
US7547255 *Jan 7, 2004Jun 16, 2009Light Wave, Ltd.Contoured variably tensionable soft membrane ride surface for ride attraction
US8550926Mar 9, 2007Oct 8, 2013Thomas J. LochtefeldPadded water ride surfaces
US9463390Oct 30, 2014Oct 11, 2016FlowriderSurf, Ltd.Inflatable surfing apparatus and method
US9550127Mar 20, 2014Jan 24, 2017Thomas J. LochtefeldPadded grate drainage system for water rides
US20050148398 *Jan 7, 2004Jul 7, 2005Lochtefeld Thomas J.Contoured variably tensionable soft membrane ride surface for ride attraction
US20080216427 *Mar 9, 2007Sep 11, 2008Lochtefeld Thomas JPadded water ride surfaces
DE1047088B *Apr 20, 1955Dec 18, 1958Hans RennerAls Schnee-Ersatz dienender Gleitbelag fuer Wintersportanlagen
EP0015432A1 *Feb 18, 1980Sep 17, 1980Kommanditgesellschaft Herbert Dietrich Schulze GmbH & Co.Surfacing for sports localities having a solid substructure
WO2002083256A3 *Apr 17, 2002Mar 27, 2003Light Wave LtdContoured variably tensionable soft membrane ride surface for ride attraction
Classifications
U.S. Classification472/90, 404/1
International ClassificationE01C13/00, E01C13/12
Cooperative ClassificationE01C13/12
European ClassificationE01C13/12