Device for projecting tennis balls
First Claim
1. A device for projecting tennis balls comprising:
- i) a carriage;
ii) a microprocessor;
iii) a computer-controlled pneumatic system comprising a blower, a by-pass valve, a pressure tank, and a series of course and fine air pressure valves for establishing air pressure within the pressure tank within narrow limits;
iv) a computer-controlled ball feeding system;
v) a barrel; and
vi) a computer-controlled aiming mechanism comprising lateral and vertical aiming mechanisms.
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Accused Products
Abstract
A computerized device for propelling tennis balls by pneumatic pressure. The device contains a support pad to protect the tennis court. There is a by-pass valve which, when open, allows the blower for the pneumatic system to blow continuously, thereby avoiding carbon deposits. There is a pressure tank for the build-up of pressure for the pneumatic system when the by-pass valve is closed. Course and fine pressure valves are used to control the pressure in the pressure tank within narrow limits. A hopper contains pushers which prohibit balls accumulating in areas of little motion. A carousel advances only when a ball can drop freely into the ball outlet tube. A cover over the feeder point prevents balls in the hopper from interfering with the ball in the feeder point. The ball is held in an injection area until forced through a flap door into the pressure tank and a guide channel. The injection area contains a solenoid-controlled sweep arm which controls a injector which forces the ball through the flap door. The ball is held in the barrel by impeders until a solenoid releases the impeders through a sliding sleeve. Thus, timing of the release can be controlled by computers within narrow limits. A computer-controlled spin plate can impart spin and curve properties to the ball. Computerized lateral and vertical aiming mechanisms result in concise placement of the ball. The device is suitable for training, testing and recreational purposes and is capable of simulating an actual tennis game.
33 Citations
21 Claims
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1. A device for projecting tennis balls comprising:
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i) a carriage; ii) a microprocessor; iii) a computer-controlled pneumatic system comprising a blower, a by-pass valve, a pressure tank, and a series of course and fine air pressure valves for establishing air pressure within the pressure tank within narrow limits; iv) a computer-controlled ball feeding system; v) a barrel; and vi) a computer-controlled aiming mechanism comprising lateral and vertical aiming mechanisms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A device for projecting tennis balls comprising:
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i) a carriage containing a hopper for the tennis balls; ii) a microprocessor; iii) a computer-controlled pneumatic system comprising means to obtain specific pressure; iv) a computer-controlled ball feeding system which delivers balls from the hopper to the pneumatic system; v) a barrel through which the tennis balls are projected, which barrel comprises; A) a proximal end, B) a distal end, C) a plurality of impeders spaced around the barrel, which impeders are capable of pivotally entering the barrel to prevent distal motion of a ball and are capable of pivotally exiting the barrel to allow distal motion of a ball, D) a computer-controlled solenoid which controls the distal and proximal motion of a sliding sleeve containing rollers such that when the sliding sleeve moves distally the impeders are released and are forced out of the barrel allowing distal projection of the ball, and when the sliding sleeve moves proximally the impeders are again locked in place in the barrel preventing distal motion of a ball; vi) a computer-controlled aiming mechanism comprising lateral and vertical aiming mechanisms. - View Dependent Claims (20, 21)
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Specification