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:
May. 10, 1994
Filed:
Jul. 29, 1992
Masanori Takatsuka, Hamamatsu, JP;
Yamaha Corporation, , JP;
Abstract
In construction of a tennis racket provided with an oval Head Frame defining a racket face, the longitudinal size (W.sub.1) of the racket face is set to a value in a range from 320 to 390 mm, the transverse size (W.sub.2) of the same is set to a value in a range from 200 to 240 mm, and the longitudinal compressive rigidity of the head frame is adjusted to a value in a range from 30 to 200 Kgf/mm. The construction thus specified allows employment of an enlarged main/cross string tension ratio which assures high degree of spin performance at shooting balls.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile