Racquet configured with fewer cross strings than main strings
US9339699B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2015 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Jun 23, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2220/806
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A racquet includes polyester, monofilament racquet string and a frame extending along a longitudinal axis and including a head portion coupled to a handle portion. The head portion includes a hoop having inner and outer peripheral walls. The hoop defines a head size having maximum longitudinal and transverse dimensions, a, and, b, respectively. The dimension a is at least 1.2 times the dimension b. The inner peripheral wall includes string holes. The string has a diameter within the range of 1.10 to 1.55 millimeters. The string forms a string bed of interlaced main and cross string segments. Each of the cross segments transversely extends from one of the string holes to another, and each of the main segments longitudinally extends from one of the string holes to another. The string bed has at least one more main segment than cross segment. At least one of the main segments contacting the tennis ball exhibits a snap back velocity of at least 1 meter per second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.