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:
Jul. 23, 1991
Filed:
Jul. 11, 1989
Dan Nolan, San Diego, CA (US);
Prince Manufacturing, Inc., Lawrenceville, NJ (US);
Abstract
A tennis racket includes a frame with a head and a shank portion. The shank portion has an outer periphery with top, bottom, side and diagonal outside surfaces arranged generally in an octagonal configuration. A preformed handle includes a core with a hollow interior having upper, lower, lateral and angled surfaces therein arranged to define generally an octagonal configuration. The surfaces in the interior of the core are sized to conform to the outside surfaces of the shank portion of the frame, and may include longitudinally extending flutes to reduce vibration, weight, and shock in the handle. Handles of different grip sizes are preformed separate from the frames. The core elements are one piece, and may therefore be wrapped with leather or other gripping material and stored separate from the frames. When a finished racket frame is desired, adhesive is applied to the shank portion of the frame, and the handle slides over the end of the frame and seats on the outside surfaces. Because of the large contact area, the handle is mounted securely on the frame, and is structurally equivalent to rackets, in which the handle is built up individually on the racket.