EP0063111A2 - Surfacing for sports grounds, particularly for tennis courts, and a method of producing the surfacing material - Google Patents
Surfacing for sports grounds, particularly for tennis courts, and a method of producing the surfacing material Download PDFInfo
- Publication number
- EP0063111A2 EP0063111A2 EP82890036A EP82890036A EP0063111A2 EP 0063111 A2 EP0063111 A2 EP 0063111A2 EP 82890036 A EP82890036 A EP 82890036A EP 82890036 A EP82890036 A EP 82890036A EP 0063111 A2 EP0063111 A2 EP 0063111A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- particles
- platelet
- scale
- covering
- covering according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
- B02C18/148—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers specially adapted for disintegrating plastics, e.g. cinematographic films
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/06—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003
- E01C13/065—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003 at least one in situ layer consisting of or including bitumen, rubber or plastics
Definitions
- the invention relates to a covering for sports fields, in particular for tennis courts, which has a loosely poured layer containing plastic particles on its surface, and a method for producing these plastic particles.
- a sports field covering particularly suitable for tennis courts, was proposed in CH-A-611 959, in which a carrier layer is provided in which stabilizing grains e.g. made of rubber are firmly embedded, which protrude from the carrier layer by about a third of their height dimension.
- a relatively thin covering layer of fine rubber granulate with a grain size of 0.5 to 1.5 mm is then applied to this carrier layer, which fills the gaps between the stabilizing grains protruding from the carrier layer and covers their tips. If the athlete now pulls away from the surface, the tips of the stabilizing grains are gripped by the profile sole of the tennis or sports shoe, which e.g. allows a perfect impression when starting.
- the invention seeks to remedy this.
- the invention as characterized in the claims solves the problem of a covering for S p ort p bibs, to provide in particular for tennis courts, having on its surface a loosely poured layer of plastic, and to provide a process for preparing these plastic , the topping on largely everyone any solid surface, such as on asphalt, can be applied and, if necessary, removed from it again and which is just as pleasant for the athlete in use as a brick meal area.
- a covering according to the invention which has the desired properties can only consist of a loosely poured layer of particles based on an elastic plastic, if at least the majority of the particles used have a cuboid, plate or scale shape in a geometrically defined form are trained.
- particles based on an elastic plastic is intended to indicate that the particles can contain, in addition to the plastic, fillers, aging agents, stabilizers, processing aids, dyes and / or pigments as well as inorganic additives in the usual way.
- Particles of this type have only a slight tendency to curl, which on the one hand favors a stabilization of the bed on the underbody and, on the other hand, leads to an increased braking effect with the desired slight sliding when the athlete brakes.
- a plastic band is assumed, the thickness of which is equal to one of the dimensions (for example the thickness). of the particles to be made.
- This plastic strip is now continuously fed from the roll with its front edge over a fixed shear bar provided with a comb-like toothed cutting edge.
- a rotor equipped with one or more knives works with this shear bar, the cutting edges of the knives also being comb-like teeth and interacting with the teeth of the shear bar.
- the impact knives rotate, the desired small plastic particles are then cut off from the front edge of the continuously advanced plastic strip in the intended cuboid or plate shape.
- the tape used to produce the particles consists of a thermoplastic polyurethane elastomer, such as from polyadducts of polyesters, diisocyanates and chain extenders, e.g. according to the 400 series from EUROPOLYMERS LTD., England.
- the belt used for particle production consists of a one or two component polyurethane system, e.g. from a modified MDI and an ether-glycol mixture, as it is offered in a cold-curing system of the BAYSPORT type from BAYER, Germany.
- the tape used for particle production consists of a thermoplastic rubber, which in particular Copolymerization of styrene and butadiene is produced and as it is offered for example by the company SHELL CHEMIE, Vienna.
- the tape used for particle production consists of a modified PVC compound.
- the modifying agent can be a polyurethane elastomer, e.g. by the company EUROPOLYMERS LTD., England, under the type 707, or a permanent plasticizer based on synthetic resin, as is offered by the company Du Pont, Switzerland, under the type ELVALOY 741.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Food Science & Technology (AREA)
- Road Paving Structures (AREA)
- Road Repair (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Golf Clubs (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Zur Herstellung eines Belages für Sportplätze, insbesondere für Tennisplätze wird auf einem geeigneten Untergrund, z.B. auf Asphalt eine lose Schüttung aufgebracht, die zumindest zum größten Teil aus Teilchen auf Basis eines elastischen Kunststoffes besteht, welche in geometrisch definierter Form quader-, plättchen- oder schuppenförmig ausgebildet sind. Die plättchen- oder schuppenförmigen Teilchen weisen dabei vorteilhaft eine Dicke von maximal 1,5 mm, insbesondere jedoch von maximal 1,0 mm, und senkrecht dazu - in der Plättchen- bzw. Schuppenebene - Abmessungen von maximal 5 mm auf. Die Teilchen können vorteilhaft auf Basis eines thermoplastischen Polyurethan - Elastomeren, eines Ein- oder Zweikomponenten Polyurethansystems, eines thermoplastischen Kautschuks oder eines modifizierten PVD - Compounds hergestellt sein.To produce a covering for sports fields, in particular for tennis courts, on a suitable surface, e.g. A loose fill is applied to asphalt, which at least for the most part consists of particles based on an elastic plastic, which are cuboid, platelet or scale-shaped in a geometrically defined form. The platelet-shaped or scale-like particles advantageously have a maximum thickness of 1.5 mm, in particular, however, a maximum of 1.0 mm, and perpendicular to this - in the platelet or scale plane - dimensions of maximum 5 mm. The particles can advantageously be produced on the basis of a thermoplastic polyurethane elastomer, a one- or two-component polyurethane system, a thermoplastic rubber or a modified PVD compound.
Bei der Herstellung des Belagmaterials wird vorteilhaft von dem in Bandform vorliegenden Teilchenmaterial ausgegangen, das mit der Bandvorderkante über eine Gegenschneide geschoben wird und die Teilchen mithilfe von mit dieser Gegenschneide zusammenwirkenden Schlagmessern von der Bandvorderkante abgetrennt werden.The production of the covering material is advantageously based on the particle material present in the form of a strip, which is pushed with the leading edge of the strip over a counter cutting edge and the particles are separated from the leading edge of the strip with the help of knives which interact with this counter cutting edge.
Description
Die Erfindung betrifft einen Belag für Sportplätze, insbesondere für Tennisplätze, der an seiner Oberfläche eine lose geschüttete, Kunststoffteilchen enthaltende Schicht aüfweist, sowie ein Verfahren zur Herstellung dieser Kunststoffteilchen.The invention relates to a covering for sports fields, in particular for tennis courts, which has a loosely poured layer containing plastic particles on its surface, and a method for producing these plastic particles.
Bei Sportarten wie bei Tennis, bei denen der Sportler viel Laufarbeit mit Starten, Beschleunigen und vielfach abrup- tem Abbremsen zu bewältigen hat, haben sich bisher insbesondere Rasenplätze oder, bei den sogenannten Hartplätzen, Spielplätze mit einer Oberflächenschicht aus lose geschütteten und gewalzten Ziegelmehl bewährt. Ein wesentlicher Vorteil solcher Ziegelmehlplätze liegt darin, daß der Sportler bei einer abrupten Abbremsbewegung mit dem abbremsenden Bein geringfügig ausgleitet, wodurch die dabei aufzunehmenden Spitzenbelastungen verringert und die Gelenke und Bänder der Beine geschont werden. Andererseits sind Elastizität, Dämpfung und das Reibungsverhalten eines gewalzten Ziegelmehlbelages besonders günstig.In sports such as tennis, in which the athlete has to deal with a lot of running work with starting, accelerating and often abrupt braking, grass pitches or, in the so-called hard courts, playgrounds with a surface layer of loosely poured and rolled brick powder have proven their worth. A major advantage of such brick flour places is that the athlete slides slightly with the braking leg in the event of an abrupt braking movement, thereby reducing the peak loads to be absorbed and protecting the joints and ligaments of the legs. On the other hand, elasticity, damping and the friction behavior of a rolled brick dust covering are particularly favorable.
Nachteile der Ziegelmehlplätze bestehen in dem hohen Pflegeaufwand; der Platz muß regelmäßig gewalzt und befeuchtet werden. Bei einer zu geringen Feuchtigkeit besteht außerdem eine Neigung zum Stauben. Das Ziegelmehl unterliegt ferner einem ständigen Verschleiß und muß von Zeit zu Zeit erneuert werden. Aus diesem Grund und der Notwendigkeit einer Befeuchtung, die in geschlossenen Räumen oft zu einer unangenehmen hohen Luftfeuchtigkeit führt, ist der Einsatz von solchen Ziegelmehlbelägen in geschlossenen Sporthallen problematisch.Disadvantages of the brick flour places are the high maintenance effort; the place must be rolled and moistened regularly. If the humidity is too low, there is also a tendency to dust. The brick flour is also subject to constant wear and must be replaced from time to time. For this reason and the need for humidification, which often leads to unpleasant high humidity in closed rooms, the use of such brick dust coverings in closed sports halls problematic.
Um die Nachteile dieser Ziegelmehlbeläge zu vermeiden, wurde in der CH-A-611 959 ein insbesondere für Tennisplätze geeigneter Sportplatzbelag vorgeschlagen, bei dem eine Trägerschicht vorgesehen ist, in der Stabilisierungskörner z.B. aus Gummi fest eingebettet sind, welche etwa mit einem Drittel ihrer Höhenabmessung aus der Trägerschicht herausragen. Auf diese Trägerschicht wird dann eine relativ dünne Deckschicht aus feinem Gummigranulat mit einer Körnung von 0,5 bis 1,5 mm aufgebracht, welche die Zwischenräume zwischen den aus der Trägerschicht herausragenden Stabilisierungskörnern ausfüllt und deren Spitzen bedeckt. Wenn sich der Sportler nun von dem Belag abdrückt, werden die Spitzen der Stabilisierungskörner von der Profilsohle des Tennis- oder Sportschuhes erfaßt, was z.B. beim Starten ein einwandfreies Abdrücken ermöglicht. Das beim Abbremsen gewünschte geringfügige Ausgleiten wird durch das feine Gummigranulat der Deckschicht gewährleistet, wobei ein stärkeres seitliches Verschieben des Deckschicht - Granulates durch die in der Trägerschicht fest eingebetteten Stabilisierungskörner weitgehend verhindert wird. Der aus der CH-A-611959 bekannte Sportplatzbelag ist in seiner Herstellung aber recht aufwendig.In order to avoid the disadvantages of these brick dust coverings, a sports field covering, particularly suitable for tennis courts, was proposed in CH-A-611 959, in which a carrier layer is provided in which stabilizing grains e.g. made of rubber are firmly embedded, which protrude from the carrier layer by about a third of their height dimension. A relatively thin covering layer of fine rubber granulate with a grain size of 0.5 to 1.5 mm is then applied to this carrier layer, which fills the gaps between the stabilizing grains protruding from the carrier layer and covers their tips. If the athlete now pulls away from the surface, the tips of the stabilizing grains are gripped by the profile sole of the tennis or sports shoe, which e.g. allows a perfect impression when starting. The slight slipping that is desired when braking is ensured by the fine rubber granulate of the cover layer, whereby a greater lateral displacement of the cover layer granules is largely prevented by the stabilizing grains firmly embedded in the support layer. The sports field covering known from CH-A-611959 is, however, quite complex to manufacture.
Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, einen Belag für Sportplätze, insbesondere für Tennisplätze zu schaffen, der an seiner Oberfläche eine lose geschüttete Schicht aus Kunststoffteilchen aufweist, sowie ein Verfahren zur Herstellung dieser Kunststoffteilchen anzugeben, wobei der Belag auf weitgehend jedem beliebigen festen Untergrund, wie z.B. auf Asphalt, aufgebracht und gegebenenfalls von diesem wieder abgetragen werden kann und welcher bei einer Benutzung für den Sportler ebenso angenehm ist, wie ein Ziegelmehlplatz.The invention seeks to remedy this. The invention, as characterized in the claims solves the problem of a covering for S p ort p bibs, to provide in particular for tennis courts, having on its surface a loosely poured layer of plastic, and to provide a process for preparing these plastic , the topping on largely everyone any solid surface, such as on asphalt, can be applied and, if necessary, removed from it again and which is just as pleasant for the athlete in use as a brick meal area.
Die Erfindung wird nachstehend anhand eines durch mehrere Beispiele erläuterten Ausführungweges näher beschrieben.The invention is described below with reference to an embodiment explained by several examples.
Die Anmelder haben gefunden, daß ein die gewünschten Eigenschaften aufweisender erfindungsgemäßer Belag nur aus einer lose geschütteten Schicht aus Teilchen auf Ba- sis eines elastischen Kunststoffes bestehen kann, wenn zumindest der größere Teil der eingesetzten Teilchen in geometrisch definierter Form quader-, plättchen- oder schuppenförmig ausgebildet sind.The applicants have found that a covering according to the invention which has the desired properties can only consist of a loosely poured layer of particles based on an elastic plastic, if at least the majority of the particles used have a cuboid, plate or scale shape in a geometrically defined form are trained.
Mit der Angabe "Teilchen auf Basis eines elastischen Kunststoffes" soll angedeutet werden, daß die Teilchen neben dem Kunststoff in üblicher Weise Füllstoffe, Alterungsmittel, Stabilisatoren, Verarbeitungshilfsstoffe, Farbstoffe und/oder Pigmente sowie anorganische Beimengungen enthalten können.The expression "particles based on an elastic plastic" is intended to indicate that the particles can contain, in addition to the plastic, fillers, aging agents, stabilizers, processing aids, dyes and / or pigments as well as inorganic additives in the usual way.
Teilchen dieser Art haben nur eine geringe Rollneigung, was einerseits einer Stabilisierung der Schüttung auf dem Unterboden begünstigt und, andererseits, bei Abbremsbewegungen des Sportlers zu einer erhöhten Bremswirkung bei dem gewünschten geringfügigen Ausgleiten führt.Particles of this type have only a slight tendency to curl, which on the one hand favors a stabilization of the bed on the underbody and, on the other hand, leads to an increased braking effect with the desired slight sliding when the athlete brakes.
Für die Herstellung der Teilchen gemäß dem erfindungsgemäßen Verfahren wird von einem Kunststoffband.ausgegangen, dessen Dicke gleich einer der Dimensionen (z.B. der Dicke) der herzustellenden Teilchen ist. Dieses Kunststoffband wird nun von der Rolle kontinuierlich mit seiner Vorderkante über eine feststehende, mit kammartig gezahnter Schneidkante versehene Gegenschneide vorgeschoben. Mit dieser Gegenschneide arbeitet ein mit einem oder mehreren Schlagmessern bestückter Rotor zusammen, wobei die Schneidkanten der Schlagmesser ebenfalls kammartig gezahnt sind und mit der Zah.ung der Gegenschneide zusammenwirken. Beim Rotieren der Schlagmesser werden dann von der Vorderkante des kontinuierlich vorgeschobenen Kunststoffbandes die gewünschten kleinen Kunststoffteilchen in der vorgesehenen Quader- bzw. Plättchenform abgetrennt.For the production of the particles according to the method according to the invention, a plastic band is assumed, the thickness of which is equal to one of the dimensions (for example the thickness). of the particles to be made. This plastic strip is now continuously fed from the roll with its front edge over a fixed shear bar provided with a comb-like toothed cutting edge. A rotor equipped with one or more knives works with this shear bar, the cutting edges of the knives also being comb-like teeth and interacting with the teeth of the shear bar. When the impact knives rotate, the desired small plastic particles are then cut off from the front edge of the continuously advanced plastic strip in the intended cuboid or plate shape.
Für die eingesetzten Kunststoffe, die vorteilhaft Ozon-und UV - beständig ausgerüstet sind, werden nachstehend einige Beispiele gegeben:A few examples are given below for the plastics used, which are advantageously made resistant to ozone and UV:
Das zur Erzeugung der Teilchen eingesetzte Band besteht aus einem thermoplastischen Polyurethan - Elastomeren, wie aus Polyadditionsprodukten von Polyestern, Diisocyanaten und Kettenextendern, wie sie z.B. gemäß der Typenreihe 400 von der Firma EUROPOLYMERS LTD., England, angeboten werden.The tape used to produce the particles consists of a thermoplastic polyurethane elastomer, such as from polyadducts of polyesters, diisocyanates and chain extenders, e.g. according to the 400 series from EUROPOLYMERS LTD., England.
Das zur Teilchenerzeugung eingesetzte Band besteht aus einem Ein- oder Zweikomponenten - Polyurethansystem, wie z.B. aus einem modifizierten MDI und einer Äther-Glycol-Mischung, wie sie in einem kalthärtenden System der Type BAYSPORT der Firma BAYER, BRD, angeboten wird.The belt used for particle production consists of a one or two component polyurethane system, e.g. from a modified MDI and an ether-glycol mixture, as it is offered in a cold-curing system of the BAYSPORT type from BAYER, Germany.
Das zur Teilchenerzeugung eingesetzte Band besteht aus einem thermoplastischen Kautschuk, der insbesondere durch Kopolymerisation von Styrol und Butadien hergestellt ist und wie er z.B. von der Firma SHELL CHEMIE, Wien, angeboten wird.The tape used for particle production consists of a thermoplastic rubber, which in particular Copolymerization of styrene and butadiene is produced and as it is offered for example by the company SHELL CHEMIE, Vienna.
Das zur Teilchenerzeugung eingesetzte Band besteht aus einem modifizierten PVC - Compound. Das Modifizierungsmittel kann dabei ein Polyurethan - Elastomeres sein, wie es z.B. von der Firma EUROPOLYMERS LTD., England, unter der Type 707 geliefert wird, oder ein Permanentweichmacher auf Kunstharzbasis sein, wie er von der Firma Du Pont, Schweiz, unter der Type ELVALOY 741 angeboten wird.The tape used for particle production consists of a modified PVC compound. The modifying agent can be a polyurethane elastomer, e.g. by the company EUROPOLYMERS LTD., England, under the type 707, or a permanent plasticizer based on synthetic resin, as is offered by the company Du Pont, Switzerland, under the type ELVALOY 741.
Claims (9)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82890036T ATE17139T1 (en) | 1981-03-09 | 1982-03-08 | COVERING FOR SPORTS COURTS, ESPECIALLY FOR TENNIS COURTS, AND A PROCESS FOR MANUFACTURING THE COVERING MATERIAL. |
| EP19830890031 EP0088748B1 (en) | 1982-03-08 | 1983-03-08 | Surfacing for tennis-courts, and a method for producing the surfacing material |
| AT83890031T ATE20259T1 (en) | 1982-03-08 | 1983-03-08 | COVERING FOR TENNIS COURTS, AND A PROCESS FOR MANUFACTURING THE COVERING MATERIAL. |
| DE8383890031T DE3363878D1 (en) | 1982-03-08 | 1983-03-08 | Surfacing for tennis-courts, and a method for producing the surfacing material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1056/81 | 1981-03-09 | ||
| AT0105681A AT374115B (en) | 1981-03-09 | 1981-03-09 | COVERING FOR SPORTS COURSES, IN PARTICULAR TENNIS COURSES |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0063111A2 true EP0063111A2 (en) | 1982-10-20 |
| EP0063111A3 EP0063111A3 (en) | 1983-03-16 |
| EP0063111B1 EP0063111B1 (en) | 1985-12-27 |
Family
ID=3505626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82890036A Expired EP0063111B1 (en) | 1981-03-09 | 1982-03-08 | Surfacing for sports grounds, particularly for tennis courts, and a method of producing the surfacing material |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4822026A (en) |
| EP (1) | EP0063111B1 (en) |
| AT (2) | AT374115B (en) |
| DE (1) | DE3268073D1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2546927A1 (en) * | 1983-06-06 | 1984-12-07 | Bat Taraflex | Ground surfaces intended for sports which involve moving around and particularly for equestrian sports |
| GB2142960A (en) * | 1983-07-06 | 1985-01-30 | Nuway Mfg | Sports surface construction |
| DE4444030A1 (en) * | 1994-04-01 | 1995-10-05 | Ralph Schoepp | Ground covering for tennis courts |
| FR2807078A1 (en) | 2000-03-29 | 2001-10-05 | Envirosport | Artificial playing surface e.g. for tennis court has expanded polymer base layer, two layers of timber boards, and sand-filled resin surface |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020936A (en) * | 1989-07-28 | 1991-06-04 | International Soil Systems, Inc. | Animal running surface |
| GB2340497B (en) * | 1998-06-03 | 2003-01-08 | Genshaw Ltd | Construction materials |
| US7360997B2 (en) * | 2005-10-06 | 2008-04-22 | General Electric Company | Vibration damper coating |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3291486A (en) * | 1962-06-26 | 1966-12-13 | Dow Chemical Co | Ski slopes having a surface coating comprising a particulate resinous composition |
| CH505650A (en) * | 1969-09-22 | 1971-04-15 | Calmec Extruform Ltd | Shredder/pulverizer for thin plastic mater - ial |
| US3801421A (en) * | 1970-11-09 | 1974-04-02 | Minnesota Mining & Mfg | Resilient composite useful as surfacing for athletics |
| DE2110327A1 (en) * | 1971-03-04 | 1972-09-21 | Herbert Allwelt | Rubber granules - from used tyres with rotary stripping blade and cutting screens |
| US3731923A (en) * | 1971-04-26 | 1973-05-08 | Snow Products | Artificial ski slope |
| US3736847A (en) * | 1971-09-07 | 1973-06-05 | Mosher R | Synthetic terrain covering |
| DE2420913A1 (en) * | 1974-04-30 | 1975-11-13 | Wilhelm Haeberle | Disintegrator esp for plastics waste and glass - has flat parallel segment-shaped meshing oscillating blades |
| DE2602652A1 (en) * | 1976-01-24 | 1977-07-28 | Rolfherbert Stuehmer | Slip-improving plastics coating for a ski - comprises an optionally slightly compacted layer of plastics particles which may contain a metallic filler |
| JPS5374725A (en) * | 1976-12-15 | 1978-07-03 | Mitsui Toatsu Chemicals | Elastic paving method |
| JPS5374723A (en) * | 1976-12-15 | 1978-07-03 | Mitsui Toatsu Chemicals | Method of elastically paving |
| AT370464B (en) * | 1977-09-28 | 1983-04-11 | Becker Kg Sport | COVERING, IN PARTICULAR FOR TENNIS COURTS |
| DE2826206C2 (en) * | 1978-06-15 | 1984-01-12 | Gebr. Becker GmbH & Co KG, 6204 Taunusstein | Plastic covering for sports fields, in particular tennis courts |
| DE2813761A1 (en) * | 1978-03-30 | 1979-10-11 | Firl U Schretter Moderner Spor | Outdoor sports or gymnastic ground covering - has elastic granular coating surface ground away to half grain height |
| FR2498463A1 (en) * | 1981-01-23 | 1982-07-30 | Cirou Jean Luc | Dimpled plastic coated fabric surfaces for tennis courts etc. - stretched taut over a plain flattened substrate |
-
1981
- 1981-03-09 AT AT0105681A patent/AT374115B/en not_active IP Right Cessation
-
1982
- 1982-03-08 AT AT82890036T patent/ATE17139T1/en not_active IP Right Cessation
- 1982-03-08 DE DE8282890036T patent/DE3268073D1/en not_active Expired
- 1982-03-08 EP EP82890036A patent/EP0063111B1/en not_active Expired
-
1983
- 1983-03-07 US US06/472,666 patent/US4822026A/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2546927A1 (en) * | 1983-06-06 | 1984-12-07 | Bat Taraflex | Ground surfaces intended for sports which involve moving around and particularly for equestrian sports |
| GB2142960A (en) * | 1983-07-06 | 1985-01-30 | Nuway Mfg | Sports surface construction |
| DE4444030A1 (en) * | 1994-04-01 | 1995-10-05 | Ralph Schoepp | Ground covering for tennis courts |
| FR2807078A1 (en) | 2000-03-29 | 2001-10-05 | Envirosport | Artificial playing surface e.g. for tennis court has expanded polymer base layer, two layers of timber boards, and sand-filled resin surface |
Also Published As
| Publication number | Publication date |
|---|---|
| US4822026A (en) | 1989-04-18 |
| DE3268073D1 (en) | 1986-02-06 |
| EP0063111B1 (en) | 1985-12-27 |
| ATA105681A (en) | 1983-05-15 |
| EP0063111A3 (en) | 1983-03-16 |
| ATE17139T1 (en) | 1986-01-15 |
| AT374115B (en) | 1984-03-26 |
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