Games using tangible projectile – Playing field or court game; game element or accessory... – Means for dividing field or court into compartments; element...
Reexamination Certificate
2006-06-13
2006-06-13
Kim, Eugene (Department: 3711)
Games using tangible projectile
Playing field or court game; game element or accessory...
Means for dividing field or court into compartments; element...
Reexamination Certificate
active
07059980
ABSTRACT:
A singles stick is provided for raising the top edge of a tennis net from its otherwise undisturbed position to convert a tennis net from doubles to regulation singles play. The singles stick comprise a base that abuts against the ground when the singles stick is installed and an upper staff that engages against the top edge of the net when the singles stick is installed. The base and the upper staff are telescopically connected to one another to allow their combined length to be varied between an extended position and a collapsed position. In the extended position, their combined length is sufficient to raise the top edge of the net from the position that edge has during doubles play. In the collapsed position, their combined length is sufficient to allow the singles stick to be stored in an equipment bag of the type used to carry tennis rackets and the like.
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Juvinall, Robert C., Fundamentals of Machine Component Design, 2nd Edition, New York: John Wiley & Sons, Inc., Copyright 1991, p. 427.
Hunter, Jr. Alvin A.
Kim Eugene
Miller James W.
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