EP0166561A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Games racket
Assignee: Dunlop Ltd
•
Filing: 1985-06-17
•
Granted: —
•
Expires: 2005-06-17
Abstract
Abstract The invention relates to a games racket of the type having a strung head and provides means of adjusting the playing properties of the racket. Removable weights (7) are attached to the circumference of the head (3) by means of carrier members (2) which are secured to the head in the region of the transverse axis through the centre of percussion of the racket. The carrier members have recesses into which the weights can be inserted. The invention enables the moment of inertia of the racket to be changed without affecting its centre of percussion and does not require any special construction of racket frame.
Inventors
- 👤 Herbert Glaessgen
- 👤 Wolfgang Kleinheinz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 04:42
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A games racket having adjustable playing properties, the racket having a frame comprising a head and a handle, the head being adapted to carry the desired stringing and the frame having one or more weights removably attached at one or more positions on the inner or outer circumference of the head, characterised in that carrier members (2) are secured to the head (3) in the region of the transverse axis extending through the centre of gravity of the racket, the carrier members being provided with recesses into which the weights (7) are inserted.
Claim 2
Dependent Claim
93 words
A games racket having adjustable playing properties, the racket having a frame comprising a head and a handle, the head being adapted to carry the desired stringing and the frame having one or more weights removably attached at one or more positions on the inner or outer circumference of the head, characterised in that carrier members (2) are secured to the head (3) in the region of the transverse axis extending through the centre of gravity of the racket, the carrier members being provided with recesses into which the weights (7) are inserted.
Claim 3
Dependent Claim
38 words
A grames racket according to Claim 1, characterised in that the frame has string -protecting-grommets (6) some of which are extended in length, the extended portions being provided with rebates (8) for the attachment of the carrier-members (2).
Claim 4
Dependent Claim
30 words
A games racket according to Claim 1, characterised in that the carrier members (21,22) are claw-shaped and are attachable on to the inner or outer circumference of the frame (3).
Claim 5
Dependent Claim
66 words
A games racket according to Claim 1, 2, or 3, characterised in that the weights consist of balls (7) of a material of high specific gravity (e.g. steel or lead) and the carrier members (2, 21, 22) have hollow ball-shaped recesses corresponding to the diameter of the balls, whereby more than half of the surface of the inserted balls (7) can be enclosed in the recesses.
Claim 6
Dependent Claim
44 words
A games racket according to Claim 4, characterised in that the hollow ball-shaped recesses in the carrier members (2, 21, 22) are so arranged that the plane of their openings extends approximately at right angles to the stringing plane of the racket head (1).
Claim 7
Dependent Claim
79 words
Means to adjust the playing properties of a games racket of the type comprising a head adapted for stringing, characterised in that the means comprise one or more carrier members (2) adapted to be attached to the inner or outer circumference of the head (3) of the racket in the region of the transverse axis extending through the centre of gravity of the racket, the carrier members (2) being provided with recesses into which weights (7), can be inserted.
Claim 8
Dependent Claim
79 words
Means to adjust the playing properties of a games racket of the type comprising a head adapted for stringing, characterised in that the means comprise one or more carrier members (2) adapted to be attached to the inner or outer circumference of the head (3) of the racket in the region of the transverse axis extending through the centre of gravity of the racket, the carrier members (2) being provided with recesses into which weights (7), can be inserted.
Claim 9
Dependent Claim
26 words
Means according to Claim 6, characterised in that the frame includes elongated stringing grommets (6) provided with rebates (8) for attachment of the carrier members (2).
Claim 10
Dependent Claim
24 words
Means according to Claim 6, characterised in that members (21,22) are claw-shaped for attachment to the inner or outer circumference of the head (3).
Claim 11
Dependent Claim
64 words
Means according to Claim 6, 7 or 8, characterised in that the weights are balls (7) of a material of high specific gravity (e.g. steel or lead) and the carrier members (2, 21, 22) have recesses of shape and size corresponding to the diameter of the balls, whereby more than half the surface of an inserted ball (7) can be enclosed in a recess.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.