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Publication numberUS3180643 A
Publication typeGrant
Publication dateApr 27, 1965
Filing dateNov 8, 1961
Priority dateNov 15, 1960
Publication numberUS 3180643 A, US 3180643A, US-A-3180643, US3180643 A, US3180643A
InventorsKallai Oskar
Original AssigneeKallai Oskar
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tennis training apparatus
US 3180643 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

April 2 7, 1965 o. KALLAI 3,180,643

TENNIS TRAINING APPARATUS Filed Nov. 8, 1961 2 Sheets-Sheet 1 INVENTOR BY W m fl /M may April 27, 1965 o. KALLAI TENNIS TRAINING APPARATUS 2 Sheets-Sheet 2 Filed Nov. 8, 1961 INVENTOR.

BY WM% MWMW United States Patent 3,180,643 TENNIS TRAINING APPARATUS Osln'n' Kailai, Lissevenlaan 11, Waalre,

North Brabant, Netherlands Filed Nov. 8, 1961, Ser. No. 151,025 Claims priority, application Great Britain, Nov. 15, 1960, 39 ,224/ 60 3 Claims. (Cl. 273-49) This detracts from the usability of the apparatus.

It is an object of this invention to overcome this disadvantage by providing the ball returning surface with a horizontal strip that is adapted to be removed from said surface. The strip is mounted at a height corresponding to the height of the upperside of the net, so that when the strip has been removed so as to leave a horizontal open ing, balls which have been played correctly and which would have passed just over the net are not returned, but will pass through said opening to land behind said surface.

It is a further object of the invention to provide means for indicating whether the ball has been correctly played so as to pass through the opening in the ball returning surface.

It is a still further object of the invention to provide means for catching and returning to the user of the apparatus balls which have passed through the opening in the ball returning surface.

Another object of the invention is to provide means for preventing the ball catching and returning means from throwing the balls back at the user of the apparatus over the top of or through the opening in the ball returning surface.

By way of example, a specific embodiment of the apparatus according to the invention is shown in the accompanying drawings. In these drawings:

FIGURE lis a front elevation of an embodiment of an apparatus according to the invention; and

FIGURE 2 is a side view and partly a cross-sectional view taken on line II-II in FIGURE 1.

The apparatusrests on two stands 1 thatare connected by a horizontal shaft 2 about which the apparatus is rotatable. By means of a slot and a co-operating clamping screw 3 the apparatus can be secured in any desired position.

The ball returning member is designated by the numeral 4 and a removable strip designated by the numeral Sis held'against the back of the ball returning member 4 covering a horizontal opening 4:: therein; 7 Clamps Sa' hold the removable strip against theback of ball returning member 4. a

The ball catching and guiding device may be made from an appropriate material. As shown in FIGURES 1 and 2 a net 10 is provided which 'is stretched between supporting bars. It will be clear without further explanation that balls that are caught by the netwill drop down after having lost their speed and will be led back towards I the player by the curved shape of the'net. Since the balls which have passed through the opening in the ball returning surface are thus automatically returned to the. user of the apparatus rather than being held behind the ball returning surface, any running about for fetching the balls is obviated, and the training time can be fully utilized; The numeral 11 designates a closure .means mounted for pivotal-movement and located at the lower "ice Patented Apr. 27, 1965 1 0 is adjusted. The numeral 12 designates a ball stopping net provided above and behind the ball returning surface. Balls which are played very hard and sharp will thus not be thrown back by the net 10, but will strike the hanging net 12 and drop down behind the ball returning surface against the lower part of the net 10 and be returned to the user of the apparatus.

The wing members 13 are rotatably secured to the stand at 14. Said stand may be adjustable relative to the ground, it being possible to raise and lower it by means of set screws 15, if desired. This adjustment, in combination with the rotatability of the apparatus about the shaft 2 enables the training conditions to be modified by adjusting both the angle of the ball returning surface as well as the height of the opening therein.

The construction shown is composed of small parts. This greatly facilitates the transporting of the apparatus.

Moreover the majority of said parts are readily obtainable commercially, which reduces the manufacturing cost.

I claim:

1. A tennis training apparatus, comprising a ball returning member having a ball returning surface thereon, adjustable mounting means on which said ball returning member is mounted for adjustably supporting said surface in a given position, said ball returning member having a horizontally extending opening therethrough opening along the length of said ball returning surface, and a removable horizontal strip removably mounted securely against said ball returning member and covering said opening, a ball catching member positioned behind and secured to said ball returning member, said ball catching member opening toward the direction from which balls are intended to be driven against the ball returning surface a horizontally extending opening therethrough opening along thelength of said ball returning surface, and a removable horizontal strip removably mounted securely against said ball returning member and covering said opening, a ball catching member positioned behind said ball returning member, said ball catching member having a ball catching surface with'a lower portion extending in the direction from which balls are intended to be driven against the ball returning surfa'ce,said ball catching member being mounted on said adjustable mounting means,

I said adjustable mounting means having a horizontal shaft extending through the center of gravity of said apparatus,

and a supporting frame on which said horizontal shaft is rotatably mounted for permitting easy rotation of said apparatus on said supporting frame.

3. A tennis training apparatus, comprising va ball returning member having a ball returning surface thereon, a ball catching member positioned behind andsecur ed to said ball' returning member, said ball catching member opening toward the direction from which balls. are intended to be drivenagainst the ball returning surface and returning member and hanging frornasaid bail catching 5 member with the lower edge thereof being free.

References Cited by the Examiner UNITED STATES PATENTS 1,123,051 12/14 Whiteman -1 27 1,908,359 5/33 Hughes 273 -484 X 3 W1 6 RICHARD c. PINKHAM, Primary Examiner.

Regenold 273 103 Rose 273102.1 Clark 27329.1 Cole 273-102.4

FOREIGN PATENTS V Great Britain. Great Britain.

DELBERT B. LOWE, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1123051 *Jul 22, 1914Dec 29, 1914Charles H WhitmanRifle-target.
US1908359 *Dec 4, 1929May 9, 1933Hughes James WilliamMechanical golf game
US1948995 *Dec 21, 1932Feb 27, 1934Regenold Sr Charlie SAmusement apparatus
US2251757 *Dec 23, 1940Aug 5, 1941Rose John AAmusement device
US2280376 *Feb 12, 1940Apr 21, 1942Clark Louis FMachine for playing tennis and the like
US2397921 *May 12, 1942Apr 9, 1946Harry E ColeShot trap for air rifle targets
GB347389A * Title not available
GB642980A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4082271 *Apr 29, 1976Apr 4, 1978Arthur Lee MartinTennis practice and teaching rebounder
US4140313 *Oct 14, 1977Feb 20, 1979Martin Arthur LNet rebound wall adapter for tennis enclosure
US4204679 *Oct 25, 1978May 27, 1980Kreuzman Harry ETennis practice serving net
US4286786 *May 18, 1978Sep 1, 1981Papadopoulos Andreas TSoccer training goal
US4417728 *May 6, 1980Nov 29, 1983Esselte Studium AbTraining apparatus for racket sports
US4718668 *Apr 14, 1986Jan 12, 1988Donald SchipskeUniversal tennis training means
US5807193 *May 9, 1997Sep 15, 1998Jas D. Easton, Inc.Adjustable ball backstop
US6422956 *Sep 1, 1998Jul 23, 2002John H. KusmissApparatus for practicing a ball-propelling sport using a ball-returning device in conjunction with an imaging device
US8827844Apr 12, 2012Sep 9, 2014Hans BÝrge Pettersen LienFootballmaster
US9155952 *Dec 10, 2009Oct 13, 2015Tatsuya YamanashiTennis training apparatus
US9427648Jun 13, 2014Aug 30, 2016James CingoneDynamic training apparatus
US20120015764 *Jul 13, 2011Jan 19, 2012Lawrence TynesKicking net
US20120283046 *Dec 10, 2009Nov 8, 2012Tatsuya YamanashiTennis training apparatus
EP0130999A1 *Dec 22, 1983Jan 16, 1985DRANSFIELD, Charles WilliamRebound screen for ball games
EP0130999A4 *Dec 22, 1983Jan 10, 1987Charles William DransfieldRebound screen for ball games.
Classifications
U.S. Classification473/434, 473/194, 473/197
International ClassificationA63B63/00, A63B69/00
Cooperative ClassificationA63B2024/005, A63B69/0097, A63B63/00
European ClassificationA63B63/00, A63B69/00W