DE3469223D1 - Method for determining the quality of rackets - Google Patents

Method for determining the quality of rackets

Info

Publication number
DE3469223D1
DE3469223D1 DE8484111223T DE3469223T DE3469223D1 DE 3469223 D1 DE3469223 D1 DE 3469223D1 DE 8484111223 T DE8484111223 T DE 8484111223T DE 3469223 T DE3469223 T DE 3469223T DE 3469223 D1 DE3469223 D1 DE 3469223D1
Authority
DE
Germany
Prior art keywords
rackets
quality
vibration
frequency
determining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8484111223T
Other languages
German (de)
English (en)
Inventor
Walter Dr Beer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE3469223D1 publication Critical patent/DE3469223D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/42—Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/042—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands by measuring vibrational characteristics of the flexible member
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
DE8484111223T 1983-10-12 1984-09-20 Method for determining the quality of rackets Expired DE3469223D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5545/83A CH662886A5 (de) 1983-10-12 1983-10-12 Verfahren zum bestimmen der qualitaet von ballschlaegern.

Publications (1)

Publication Number Publication Date
DE3469223D1 true DE3469223D1 (en) 1988-03-10

Family

ID=4295389

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484111223T Expired DE3469223D1 (en) 1983-10-12 1984-09-20 Method for determining the quality of rackets

Country Status (6)

Country Link
US (1) US4599898A (https=)
EP (1) EP0141976B1 (https=)
JP (1) JPS6098330A (https=)
AT (1) ATE32380T1 (https=)
CH (1) CH662886A5 (https=)
DE (1) DE3469223D1 (https=)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62222612A (ja) * 1986-03-25 1987-09-30 Mitsubishi Electric Corp 電気機器の振動特性簡易測定方法
DE3736219C2 (de) * 1987-10-26 1994-08-18 Mauve Karl Eberhard Dr Verfahren und Vorrichtung zur Messung der Saitenspannung eines saitenbespannten Schlägers
US4870868A (en) * 1988-04-27 1989-10-03 Pennwalt Corporation Vibration sensing apparatus
US5060524A (en) * 1990-04-11 1991-10-29 Makser, S.A. Racket stringing tension measuring device
US5163681A (en) * 1991-05-02 1992-11-17 George Hodgetts Golf club matching
US5796005A (en) * 1991-06-12 1998-08-18 Frolow; Jack L. Flex meter for sports game implements
US6132326A (en) * 1997-09-23 2000-10-17 Jay Schweid, Inc. Sports implement customizing system
US6880403B1 (en) * 2000-08-28 2005-04-19 Mitsubishi Denki Kabushiki Kaisha Structure inspection device
CN109489921A (zh) * 2018-07-02 2019-03-19 马鞍山清净环保科技有限公司 一种用于多功能球拍测试仪的拍头控制装置及其使用方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345862A (en) * 1964-01-21 1967-10-10 Robert G Rowe Resonance vibration apparatus for testing articles
US3345861A (en) * 1967-02-24 1967-10-10 Charles A Heath Acoustical testing method and apparatus
US4109520A (en) * 1976-03-30 1978-08-29 Svenska Traforskningsinstitutet Method and means for measuring web tension in paper or foils
US4055999A (en) * 1976-12-23 1977-11-01 Cope James R Tension tester for tennis racket strings
US4077256A (en) * 1977-01-10 1978-03-07 Bruce Lee Hollander Stringed racket face tension measuring device
US4158962A (en) * 1978-03-03 1979-06-26 Paul Conoval Cable tension measuring apparatus

Also Published As

Publication number Publication date
US4599898A (en) 1986-07-15
EP0141976A1 (de) 1985-05-22
JPS6098330A (ja) 1985-06-01
ATE32380T1 (de) 1988-02-15
CH662886A5 (de) 1987-10-30
JPH0477865B2 (https=) 1992-12-09
EP0141976B1 (de) 1988-02-03

Similar Documents

Publication Publication Date Title
GB2029018B (en) Method of and apparatus for the measurement of at least one mechanical property of an elastic material
DE3469223D1 (en) Method for determining the quality of rackets
SE7610737L (sv) Sett och anordnding for dynamisk markkomprimering
ES2145160T3 (es) Control de una maquina de compactar con medicion de las caracteristicas del material de terreno.
ATE111289T1 (de) Anmessung von hörgeräten mit hilfe von vektoren.
SE8802579L (sv) Apparat och metod foer bestaemning av massan foer en artikel genom maetning av skiftet i perioden foer harmonisk roerelse
DE3776911D1 (de) Vibrationskraftsensor.
FR2549559B1 (fr) Amortisseur d'oscillations pour l'amortissement de masses tournantes
SE8305500D0 (sv) Forfarande for sallning av treflis och liknande samt ett sall
CA2270455A1 (en) A method of and a device for acoustically monitoring the course of a process, such as a milking process
TW343155B (en) Speed measuring apparatus and toy for measuring speed of moving member
JPS5656276A (en) Method of monitoring vibrating screen
RU2002124038A (ru) Способ контроля дефектности изделия
DK442884A (da) Fremgangsmaade og apparat til overfoering af akustiske informationer som foelelige vibrationer
EP0113031A3 (en) Method and apparatus for testing the purity of noble metal shaped bodies
CA1231734A (en) Swing frequency balancing of golf clubs
JPS5337394A (en) Method of adjusting vibration frequency of tuning fork vibrator
PAVLOVSKII et al. The method of initial parameters as applied to the flexural vibrations of beams with hinges and oscillators
RU1824529C (ru) Способ передачи вибрации от вибровозбудител к испытуемому объекту
Knake Precise Determination of Elastic Constants by Means of the Resonant Method
SU1244527A1 (ru) Способ динамических испытаний изделий
SU1766972A1 (ru) Способ обработки крупногабаритных деталей
JPS5217882A (en) Detection method of internal quality of elastic materials by multicycl e vibration
HINKLEY et al. Apparatus and method for determining the mass density of a filament(Patent Application)
Kravchik et al. Determining the Elastic Modulus of Materials by the Method of Kinematic Excitation of the Testpieces

Legal Events

Date Code Title Description
8380 Miscellaneous part iii

Free format text: DER PATENTINHABER LAUTET RICHTIG: BEERS AG. INGENIEURE, HAUSEN AM ALBIS, CH

8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee