A63B 51/005
Devices for measuring the tension of strings
Official title: Devices for measuring the tension of strings (for controlling the tension during stringing A63B51/14)
A63B51/005 (Devices for measuring the tension of strings) appears on 27 US grants and 10 published applications in this corpus.
Search patents in A63B- Granted patents
- 27
- Published applications
- 10
- Assignees
- 5
- Inventors
- 39
- Latest grant
- 21 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 2 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Device for accurately measuring string bed stiffness in a racket21 Mar 2023US 11,607,589 B1
- Pulling string apparatus of stringing machine19 Apr 2022US 11,305,162 B2Guangzhou Mastripod Technology Limited
- Methods and apparatuses for enhancing performance in racket sports14 Jun 2016US 9,364,730 B2Head Technology GmbH
- Individual tensiometer for measuring tension in a string17 Feb 2015US 8,955,398 B2
- Methods and apparatuses for enhancing performance in racket sports10 Dec 2013US 8,602,922 B2Head Technology GmbH
- Characterization of the deformation properties of a ball game racket string pattern20 Jan 2022US 2022/0019705 A1Head Technology GmbH
- Pulling string apparatus of stringing machine1 Oct 2020US 2020/0306598 A1Guangzhou Mastripod Technology Limited
- Tunable tennis racket apparatus30 Jan 2020US 2020/0030667 A1
- String set, main string, and cross string25 Apr 2019US 2019/0118045 A1Yonex Kabushiki Kaisha
- Method and Apparatus for Real-Time Racket String Tension Measurement19 May 2016US 2016/0136486 A1
Most cited
By later US patents
- Methods and apparatuses for enhancing performance in racket sports20US 8,602,922 B2Head Technology GmbH · 2013
- Racquet stringing system with string tension indicating means16US 4,593,905 A1986
- Method and apparatus for determining tension and pressure14US 4,590,808 A1986
- Method and apparatus for mesurement of tension in an elastic surface11US 5,123,284 A1992
- Tennis racket string tension tester9US 4,794,805 A1989