US Patent No: 5,642,882

Number of patents in Portfolio can not be more than 2000

Butt cap for sports racquet




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A sliding trap door butt cap for use on a sports racquet such as a tennis racquet includes a cap base and a removable cap plate. The bottom of the cap base has a rectangular guide opening including a pair of opposed keyways, and a ramp portion extending from the keyway on the inwardly facing surface of the cap base. A cap plate has a pair of L-shaped legs extending from the upper surface. The legs are inserted into the respective keyways, and then slid along the ramp portions to draw the cap plate against the cap base. Preferably, the base has an outer border that defines a socket for receiving the cap plate, and the cap plate further includes a tab that engages the guide opening when the cap plate is in position over the socket, so as to lock the cap plate.

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Patent Owner(s)

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International Classification(s)

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Inventor Name Address # of filed Patents Total Citations
Guerzini, Michael F 143 Birch Hollow Dr., Bordentown, NJ 08505 2 21

Cited Art Landscape

Patent Info (Count) # Cites Year
4,195,837 Golf club grip 17 1978
Woollard; Howard W. (1)
5,333,854 Tennis ball retriever and racquet 6 1993
Other [Check patent profile for assignment information] (4)
5,000,452 Tennis racket, handle cap, and handle grip wrapping 9 1989
4,984,793 Racket handle cap 15 1989
5,244,209 Golf grip apparatus 21 1991
5,425,534 Badminton racket handle structure 9 1993

Patent Citation Ranking

Forward Cite Landscape

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IGT (11)
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8,647,194 Gaming device having free game bonus with a changing multiplier 0 2013
6,106,417 Lightweight tennis racket having high frequency 17 1998
8,282,514 Sports racquet for impacting a ball and facilitating the opening of a cap on a bottle 1 2011
Other [Check patent profile for assignment information] (3)
6,086,489 Shock absorbing end cap mounted to a racket handle 4 1999
7,462,116 Tennis training apparatus and method of use thereof 0 2006
8,628,436 Lacrosse stick accessory 0 2011