The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 07, 2000
Filed:
May. 25, 1999
Enoch J Durbin, Princeton, NJ (US);
Other;
Abstract
An improved sports racket design which makes the velocity and angle of the hit ball more nearly independent of the point of impact of the ball on the string bed than in the prior art. There are seven structural elements included. Each of which contribute independently toward this goal. String tension of the lateral and longitudinal strings are each approximately proportional to the mean lateral and longitudinal string lengths. The outermost longitudinal and lateral strings are spaced apart from the racket rails by at least 4 cm. and 5 cm. respectively. The throat piece, if it exists, weighs less than 28 grams. The string bed is asymmetrically extended toward a handgrip which is less than 40% of the racket length. The racket rail is made rigid in the long direction and more flexible in the plane of the string bed by a high ratio of rail height to rail thickness.