Patent ID: 9700779
Date: 2017-07-11
CPC Classifications: A63B,F41B

Claim:
1. A football throwing apparatus having a source of compressed air, the football throwing apparatus comprising: a first enclosed chamber in which the compressed air is stored; a second enclosed chamber in which the compressed air is also stored, the second enclosed chamber including a hollow barrel having a launching end on which a football is positioned to be thrown; a piston slidably mounted in the first enclosed chamber; a connecting rod having a first end and a second end and the first end is connected to the piston; and a first seal connected to the second end of the connecting rod, and the first seal is adjacent to the throwing end of the barrel; wherein when the football throwing apparatus is being charged with compressed air from the external source of compressed air the compressed air causes the piston to slide toward the throwing end of the barrel and this moves the first seal connected to the piston via the connecting rod to close the throwing end of the barrel and store the compressed air inside the first enclosed chamber and the second enclosed chamber; wherein when the football throwing apparatus is initiated to throw the football positioned on the throwing end of the barrel, the compressed air stored in the first enclosed chamber is vented from the first enclosed chamber which creates a vacuum that causes the piston and first seal attached thereto via the connecting rod to slide toward the first enclosed chamber and thereby move the first seal to open the throwing end of the barrel, and the compressed air stored in the second enclosed chamber is thereby released out the now opened throwing end of the barrel to throw the football positioned on the throwing end of the barrel; a second seal that seals the first enclosed chamber opening when compressed air is to be stored in the first enclosed chamber and stored in the second enclosed chamber in preparation for throwing a football off the throwing end of the barrel; and wherein the barrel is hollow and has a wall and through the wall of the barrel is a hole, and further comprising: a third seal mounted in the barrel hole, the third seal being in a first position that causes any air input to the second enclosed chamber including its hollow barrel to be vented to outside the football throwing apparatus and thereby prevent any buildup of compressed air in the football throwing apparatus, and the third seal is in a second position that seals the barrel hole and is held in that position only when a football is mounted on the barrel, and when the third seal is in its second position any compressed air input to the first enclosed chamber and to the second enclosed chamber with its hollow barrel is stored therein.