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:
Oct. 11, 1988
Filed:
Apr. 23, 1986
Edward D Krent, Sharon, MA (US);
Nicholas B Paffett, Quincy, MA (US);
Other;
Abstract
A vibration dampening device for use with hand held sporting rackets, particularly tennis rackets, having a face or striking surface formed of two intersecting sets of parallel strings. The device of this invention comprises a block of viscoelastic foam which is compressed and inserted between the strings on the striking surface. This block of foam is preferably in the shape of a cylinder and when it is inserted between two, adjacent parallel strings it assumes a generally spherical shape. Typically, this compressed block engages four adjacent strings of both sets of strings, or three strings and the racket frame. This block may be placed at various positions on the racket striking surface, and significantly reduces vibrations created in the racket by the striking of a projectile, such as a ball. The device may be constructed of various combinations of different types of foam, and may have any desired color or design.