Racket frame
US-2019184243-A1 · Jun 20, 2019 · US
Racket
US11944877B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11944877-B2 |
| Application number | US-202117159436-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 27, 2021 |
| Priority date | Feb 14, 2020 |
| Publication date | Apr 2, 2024 |
| Grant date | Apr 2, 2024 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A tennis racket includes a frame and a grommet. The frame includes a grommet groove, a small groove, and a hole. The small groove is recessed from the grommet groove. The grommet includes a base and a pipe. In a state where the grommet is attached to the frame, the base is accommodated in the grommet groove, and the pipe extends through the hole. The base is not positioned inside the small groove. Therefore, at the back of a back side surface of the base, there is a space derived from the small groove.
First claim
Opening claim text (preview).
What is claimed is: 1. A racket comprising a grommet, a frame, and a string, wherein the grommet includes: a base; and a pipe that rises from the base and through which the string is passed, and the frame includes: a grommet groove in which the base is accommodated; and a small groove recessed from the grommet groove, wherein the small groove defines an empty space between a bottom surface of the small groove and an opposing surface of the base. 2. The racket according to claim 1 , wherein a width of the small groove is greater than or equal to 0.5 mm but less than or equal to 1.5 mm. 3. The racket according to claim 1 , wherein a depth of the small groove is greater than or equal to 0.1 mm but less than or equal to 1.0 mm. 4. The racket according to claim 1 , wherein a ratio of a width of the small groove to a diameter of the string is greater than or equal to 50% but less than or equal to 100%. 5. A frame for use in a racket, to which a grommet and a string are attachable, the grommet including a base and a pipe that rises from the base, the frame comprising: a grommet groove in which the base is accommodated; and a small groove recessed from the grommet groove, wherein the small groove defines an empty space between a bottom surface of the small groove and a back side surface of the base in a state that the base is accommodated in the grommet groove.
Assignees
Inventors
Classifications
- A63B49/022Primary
String guides on frames, e.g. grommets · CPC title
Tennis · CPC title
Frames · CPC title
with slits · CPC title
Means for achieving greater mobility of the string bed · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11944877B2 cover?
- A tennis racket includes a frame and a grommet. The frame includes a grommet groove, a small groove, and a hole. The small groove is recessed from the grommet groove. The grommet includes a base and a pipe. In a state where the grommet is attached to the frame, the base is accommodated in the grommet groove, and the pipe extends through the hole. The base is not positioned inside the small groo…
- Who is the assignee on this patent?
- Sumitomo Rubber Ind
- What technology area does this patent fall under?
- Primary CPC classification A63B49/022. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Apr 02 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).