Tennis racket with vibration-damping stringing
US4993711A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1990 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Jan 26, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B49/028
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A racket for a racket sport has a frame having a handle and an annular frame head carried on the handle and formed with throughgoing stringing holes each having an outer end and an inner end. Liners define rigid edges around the outer edges of at least selected ones of the holes and strings pass through the holes in the frame, those strings passing through the selected ones of the holes being bent around and in contact with the rigid edges thereof. Respective pliable washers received in the selected ones of the holes offset from the respective ridged edges thereof each have an inner periphery elastically hugging the string traversing the respective hole for damping vibration in the head and an outer periphery fixed relative to the frame head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.