Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
248 words
A table tennis return assembly including a base member, an erectable ball trap net on said base member, said net dimensioned to extend at least to the opposite sides of one end of a tennis table support surface, a bottom support associated with said net and base member, a low point on said bottom support below the table support surface; a ball collecting tube, a mouth of said ball collecting tube positioned at said low point of the bottom support, a supply box mounted to said base member, said box receiving table tennis balls from said ball collecting tube, said supply box having a downward ball path and an air opening, an ejector tube for propelling table tennis balls, said ejector tube being joined to said supply box, an electrically powered vacuum motor to establish opposite pressure gradients so that a negative pressure is established in said ball collecting tube, and a positive pressure is established in said ejector tube, said negative pressure conveying the balls directly from the mouth of the tube to the supply box and said positive pressure propelling the balls onto the table support surface, and a transfer chamber with an enlarged volume relative to a table tennis ball, said chamber being between the supply box and the ejector tube, to receive a ball in an upper volume portion and to selectively release the table tennis ball to drop into a lower volume portion and into the positive pressure path of said ejector tube.
Claim 2
Dependent Claim
248 words
A table tennis return assembly including a base member, an erectable ball trap net on said base member, said net dimensioned to extend at least to the opposite sides of one end of a tennis table support surface, a bottom support associated with said net and base member, a low point on said bottom support below the table support surface; a ball collecting tube, a mouth of said ball collecting tube positioned at said low point of the bottom support, a supply box mounted to said base member, said box receiving table tennis balls from said ball collecting tube, said supply box having a downward ball path and an air opening, an ejector tube for propelling table tennis balls, said ejector tube being joined to said supply box, an electrically powered vacuum motor to establish opposite pressure gradients so that a negative pressure is established in said ball collecting tube, and a positive pressure is established in said ejector tube, said negative pressure conveying the balls directly from the mouth of the tube to the supply box and said positive pressure propelling the balls onto the table support surface, and a transfer chamber with an enlarged volume relative to a table tennis ball, said chamber being between the supply box and the ejector tube, to receive a ball in an upper volume portion and to selectively release the table tennis ball to drop into a lower volume portion and into the positive pressure path of said ejector tube.
Claim 3
Dependent Claim
75 words
A table tennis return assembly which includes the features of claim 1 above, wherein said ejector tube is mounted to said supply box so that said ejector tube is positioned above the table tennis surface, and wherein said ball collecting tube is an angular member having a vertical branch which is substantially normal to the ejector tube, and a collecting branch being substantially normal to said vertical branch and positioned below the table tennis surface.
Claim 4
Dependent Claim
69 words
A table tennis return assembly which includes the features of claim 2 above wherein said transfer chamber includes a selectively operating stop means which holds a ball at a raised position in an upper volume above the positive pressure paths of the ejector tube, said stop means being selectively withdrawn to drop said ball into a lower volume and into the positive pressure path communicating with said ejector tube.
Claim 5
Dependent Claim
72 words
A table tennis return assembly which includes the features of claim 3 above wherein said supply box has a downwardly reversing path for said table tennis balls delivered to the supply box from said delivery tube, said negative pressure conduit communicating with said reversing path to urge the table tennis balls to enter said path, and further including a transfer tube connecting the bottom of said reversing path to said feed means.
Claim 6
Dependent Claim
47 words
A table tennis return assembly which includes the features of claim 4 above which further includes a swing mechanism connected to said delivery tube, said swing mechanism having oscillating movement so that said delivery tube swings back and forth in a plane over the table tennis surface.
Claim 7
Dependent Claim
32 words
A table tennis return assembly and combination as in claim 5 which further includes remote control means operated by the table tennis player to selectively impart oscillating movement to said delivery tube.
Claim 8
Dependent Claim
37 words
A table tennis return assembly which includes the features of claim 4 above wherein said delivery tube includes a valve member to vary communication with atmospheric air to selectively change positive pressure gradients in said ejector tube.
Claim 9
Dependent Claim
30 words
A table tennis return assembly and combination as in claim 1 wherein said base member is a mobile base on which is mounted said return assembly and said net trap.
Claim 10
Dependent Claim
39 words
A table tennis return assembly and combination as in claim 8 which further includes tilting means mounting said delivery tube to said mobile base to allow said ejector tube to be angularly positioned relative to the table tennis surface.