U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"Inventing is a combination of brains and materials. The more brains you use, the less material you need."

Charles Kettering

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 473/542 - Having nonplanar string-hole pattern or arrangement in frame


Subclass of Class 473 - Games using tangible projectile
Definition: Subject matter comprising a specified arrangement of string
No. of patents: 20
Last issue date: 08/30/2005


NumberTitleIssue Date
6935975Racquet with channeled handle for receiving racquet string
A sports racquet extending along a longitudinal axis. The racquet includes a head portion and a handle portion. The head portion defines a string bed area. The handle portion has a distal end and a proximal end. The distal end of the handle portion is coupled to the...
08/30/2005
6811502Racquet with elongated peripheral main string segments and enlarged sweet spot
A sports racquet including a frame, a yoke and a string bed. The frame includes a head portion, a handle portion, and a throat portion positioned between the head and handle portions. The head portion includes an upper region, and first and second side regions. The ...
11/02/2004
6062994Reinforced racquet with flat string bed
A sports racquet has a head frame that includes a support member and an inwardly directed alignment member or fin. String segments are strung from a central strung area through respective holes in the fin, around the support member and back through furthe...
05/16/2000
5551689String suspension and frame construction for sports rackets
A sports racket which is made by joining longitudinal sections of a racket, particularly half sections of a racket, along a plane parallel to the center plane through the playing surface of the racket. The longitudinal sections of the racket define recess...
09/03/1996
5435550Game racket
A game racket comprises a head frame provided with a plurality of first string holes and second string holes for stringing the game racket head. The head frame is provided in the outer surface thereof with a plurality of string protecting casings, each of...
07/25/1995
5383662Racket with improved strings pattern
The tennis racket has a handle and has a hoop-like frame with an opening therein. Strings are drawn through the opening and form a substantially planar string bed which is the hitting surface of the strings within the pattern of cross strings. Outside of ...
01/24/1995
5342044Game racket
A game racket with a head frame having an outer peripheral surface and an inner peripheral surface defining an oval area. The head frame is provided with a first set of string holes and a second set of string holes. Each of the second set of string holes ...
08/30/1994
5306004Sports rackets having all strings dampened for vibration
A sports racket having a top portion, two lateral portions connecting the top portion to a throat, a shank portion, a handle, and a string network of longitudinal and cross strings defining a string network, is disclosed as having a frame structure with a...
04/26/1994
5263709Racket with improved dimensional stability
A racket comprising a head consisting of a frame and a plurality of interwoven strings, the frame is formed with a number of stringing holes which are obliquely passed from the outside of the frame substantially at the center of the thickness thereof thro...
11/23/1993
5255912Arrangement of stringing holes in the yoke of a racket
An arrangement of stringing holes in the yoke of a racket, comprising at least two rows of the stringing holes in the yoke in substantially parallel to each other and in alternative sequence so as to make the strings passing over different rows of stringi...
10/26/1993
5251895Sports racquet
An improved sports racquet has elements placed between the outer edge of the frame and the strings. The elements prevent the strings from touching the outer edge of the frame and move in response to a force applied in a direction generally perpendicular t...
10/12/1993
5234657Method of making string holes in a sports racket frame
The method of making a sports racket frame with improved string holes includes a predetermined number of insertion pins pre-arranged in the molding cavity. The inner wall surface of the molding cavity adjacent to each insertion pin is filled with the fibe...
08/10/1993
5232219Bumper for racket frame
A bumper for the racket frame consists of two identical half members, in which each half member comprises a flat strip having inner and outer surfaces in parallel, with one lateral side in substantial straight-cross-section while another lateral side in c...
08/03/1993
5209472Racket with frame attachments
A racket with frame attachments disposed on two diametrically opposite positions, each attachment comprises two rows of a plurality of stringing passages along both edges in respective inclined alignment to each other and a recess at the central space in ...
05/11/1993
5197731String suspension and frame construction for sports rackets
A sports racket having a stringed playing surface wherein selected ends of individual string segments meet the frame alternately in front of or behind the plane of the playing surface....
03/30/1993
5192072Game racket having improved stringing means
The racket head frame is provided with a predetermined number of recess cuts, each of which is used to receive therein a stringing tube of stringing element of plastic material. The stringing element has two shoulders for use in shielding both stringing t...
03/09/1993
5037097Sports racket
A sports racket having a stringed playing surface wherein selected ends of individual string segments meet the frame alternately in front of or behind the plane of the playing surface....
08/06/1991
4802678Sports racket
A stringing arrangement for a sports racket which compensates for twisting of the racket in the hand of the user when a ball is hit by areas of the racket to either side of a substantially flat middle region which extends from the heel to the tip of the r...
02/07/1989
4786055Sports racquet
An improved sports racquet is provided having elements placed between the outer edge of the frame and the strings. The elements prevent the strings from touching the outer edge of the frame and rotate in response to a force applied in a direction generall...
11/22/1988
4189142Tennis racket
A tennis racket comprising a frame having two spaced apart peripheral rows of threading openings for two spaced apart string cord layers, and an intermediate flexible layer in at least the central interspace area between said two string cord layers to int...
02/19/1980
 
Sign InRegister
Username  
Password   
forgot password?