US4545584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Racket with adjustable handle
Assignee: Tretorn AB
•
Filing: 1984-07-03
•
Granted: 1985-10-08
•
Expires: 2004-07-03
Abstract
Abstract A tennis racket having a hand-grip shell that can be moved longitudinally on the frame shaft. The hand-grip shell is formed of two half-shells made of a hard material which, by means of an elastic winding strip, a tube or several tube sections are pressed together so that the thus formed grip is held firmly on the shaft, but can still be moved longitudinally therealong. In addition, an adjusting device, such as an adjusting screw, is provided for adjusting the position of the hand-grip on the shaft. The result is that, in a simple manner, an easy individual lengthening or shortening of the grip can take place.
Inventors
- 👤 Gunter Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:21
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/08; A63B60/00; A63B60/06; A63B60/22; A63B60/28; A63B60/54
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
190 words
A racket having a frame surrounding a stringed hitting surface, said frame being provided with a hand-grip shaft, said hand grip shaft having one end attached to said frame and a free end, the hand-grip shaft being surrounded by a hand-grip formed of two half-shells which, at least in part, engage against the hand-grip shaft, at least the parts of the shells that engage the hand-grip shaft being formed of hard, substantially non-compressible material, wherein an elastic grip means in a form selected from the group consisting of an elastic winding strip, an elastic tube and several elastic tube sections surrounds the half-shells in a manner causing them to be pressed together so firmly that the hand-grip rests firmly on the hand-grip shaft, but is movable longitudinally along the hand-grip shaft, and wherein an adjusting means is provided for adjusting the position of the hand-grip relative to the hitting surface, said adjusting means being secured to the hand-grip in a manner precluding axial and radial movement relative thereto and while at the same time being interconnected with said free end of said hand grip shaft in a longitudinally adjustable manner.
Claim 2
Dependent Claim
190 words
A racket having a frame surrounding a stringed hitting surface, said frame being provided with a hand-grip shaft, said hand grip shaft having one end attached to said frame and a free end, the hand-grip shaft being surrounded by a hand-grip formed of two half-shells which, at least in part, engage against the hand-grip shaft, at least the parts of the shells that engage the hand-grip shaft being formed of hard, substantially non-compressible material, wherein an elastic grip means in a form selected from the group consisting of an elastic winding strip, an elastic tube and several elastic tube sections surrounds the half-shells in a manner causing them to be pressed together so firmly that the hand-grip rests firmly on the hand-grip shaft, but is movable longitudinally along the hand-grip shaft, and wherein an adjusting means is provided for adjusting the position of the hand-grip relative to the hitting surface, said adjusting means being secured to the hand-grip in a manner precluding axial and radial movement relative thereto and while at the same time being interconnected with said free end of said hand grip shaft in a longitudinally adjustable manner.
Claim 3
Dependent Claim
13 words
A racket according to claim 1, where said adjusting means is continuously adjustable.
Claim 4
Dependent Claim
59 words
A racket according to claim 2, wherein the adjusting means comprises an adjusting screw that is held in an end of the half-shells by a tongue-and-groove connection which provides said preclusion of movement in axial and radial directions, but permits the adjusting screw to be turned for producing the longitudinal adjustment of the hand-grip relative to the hitting surface.
Claim 5
Dependent Claim
80 words
A racket according to claim 3, wherein in the area of parting plane walls of the half-shells, along the parting planes, each half-shell is provided with pins, bushings or pins and bushings mounted at a distance from one another so that, when the two half-shells are placed together to form the hand-grip, each pin or bushing of one half-shell is disposed opposite a bushing or pin of the other half-shell so that they can be inserted one into the other.
Claim 6
Dependent Claim
37 words
A racket according to claim 4, wherein the length of the pins and size of the bushings is such that, when the pins and bushings arre firmly engaged, the half-shells are held together with a gap therebetween.
Claim 7
Dependent Claim
78 words
A racket according to claim 3, wherein the tongue-and-groove connection comprises one of a tongue and a groove on the hand-grip interacting with the other of a tongue and a groove on the adjusting screw, and wherein the tongue or groove of the hand-grip comprises at least one sliding member that is a separate part from the half-shells and is formed of a material having a higher resistance to wear than that of the half-shells forming the hand-grip.
Claim 8
Dependent Claim
24 words
A racket according to claim 6, wherein the at least one sliding member is held in a recess of the end of the half-shells.
Claim 9
Dependent Claim
20 words
A racket according to claim 7, wherein the at least one sliding member is secured within the recess by screws.
Claim 10
Dependent Claim
18 words
A racket according to claim 7, wherein the at least one sliding member is locked into the recess.
Claim 11
Dependent Claim
18 words
A racket according to claim 7, wherein the at least one sliding member is glued into the recess.
Claim 12
Dependent Claim
20 words
A racket according to claim 10, wherein the at least one sliding member is secured within the recess by screws.
Claim 13
Dependent Claim
29 words
A racket according to claim 6, wherein the at least one sliding member is fixed in position against turning in the direction of the rotation of the adjusting screw.
Claim 14
Dependent Claim
26 words
A racket according to claim 12, wherein a wall of each half-shell has at least one expansion joint extending over the whole length of the half-shell.
Claim 15
Dependent Claim
29 words
A racket according to claim 13, wherein the half-shells, on their exterior, are surrounded by layer of a soft-elastic material, and wherein the elastic grip means surrounds this layer.
Claim 16
Dependent Claim
28 words
A racket according to claim 13 wherein the half-shells are formed in such a way that two identically shaped half-shells can be placed together to form the hand-grip.
Claim 17
Dependent Claim
34 words
A racket according to claim 15, wherein a parting wall on one side of the half-shells has a grooved outside seam and a parting wall on the opposite side has a grooved inside seam.
Claim 18
Dependent Claim
80 words
A racket according to claim 13, wherein in the area of parting plane walls of the half-shells, along the parting planes, each half-shell is provided with pins, bushings or pins and bushings mounted at a distance from one another so that, when the two half-shells are placed together to form the hand-grip, each pin or bushing of one half-shell is disposed opposite a bushing or pin of the other half-shell so that they can be inserted one into the other.
Claim 19
Dependent Claim
37 words
A racket according to claim 17, wherein the length of the pins and size of the bushings is such that, when the pins and bushings are firmly engaged, the half-shells are held together with a gap therebetween.
Claim 20
Dependent Claim
26 words
A racket according to claim 6, wherein a wall of each half-shell has at least one expansion joint extending over the whole length of the half-shell.
Claim 21
Dependent Claim
30 words
A racket according to claim 19, wherein the half-shells on their exterior, are surrounded by a layer of a soft-elastic material, and wherein the elastic grip means surrounds this layer.
Claim 22
Dependent Claim
30 words
A racket according to claim 6, wherein the half-shells on their exterior, are surrounded by a layer of a soft-elastic material, and wherein the elastic grip means surrounds this layer.
Claim 23
Dependent Claim
27 words
A racket according to claim 6 wherein the half-shells are formed in such a way that two identically shaped half-shells can be placed to form the hand-grip.
Claim 24
Dependent Claim
34 words
A racket according to claim 22, wherein a parting wall on one side of the half-shells has a grooved outside seam and a parting wall on the opposite side has a grooved inside seam.
Claim 25
Dependent Claim
26 words
A racket according to claim 1, wherein a wall of each half-shell has at least one expansion joint extending over the whole length of the half-shell.
Claim 26
Dependent Claim
29 words
A racket according to claim 24, wherein the half-shells on their exterior, are surrounded by layer of a soft-elastic material, and wherein the elastic grip means surrounds this layer.
Claim 27
Dependent Claim
30 words
A racket according to claim 1, wherein the half-shells on their exterior, are surrounded by a layer of a soft-elastic material, and wherein the elastic grip means surrounds this layer.
Claim 28
Dependent Claim
28 words
A racket according to claim 1 wherein the half-shells are formed in such a way that two identically shaped half-shells can be placed together to form the hand-grip.
Claim 29
Dependent Claim
80 words
A racket according to claim 27, wherein in the area of parting plane walls of the half-shells, along the parting planes, each half-shell is provided with pins, bushings or pins and bushings mounted at a distance from one another so that, when the two half-shells are placed together to form the hand-grip, each pin or bushing of one half-shell is disposed opposite a bushing or pin of the other half-shell so that they can be inserted one into the other.
Claim 30
Dependent Claim
34 words
A racket according to claim 27, wherein a parting wall on one side of the half-shells has a grooved outside seam and a parting wall on the opposite side has a grooved inside seam.
References Cited (Backward Citations)
GB178694A
Cited
GB492684A
Cited
DE942075C
Cited
DE1112435B
Cited
DE2106800A1
Cited
DE2029533A1
Cited
DE2030998A1
Cited
US3833219A
Cited
US3931968A
Cited
US4033583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |