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1. (WO1998053289) METHOD AND APPARATUS FOR TYRE PRESSURE DETERMINATION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1998/053289 International Application No.: PCT/GB1998/001301
Publication Date: 26.11.1998 International Filing Date: 15.05.1998
Chapter 2 Demand Filed: 01.12.1998
IPC:
G01L 17/00 (2006.01) ,G01M 17/02 (2006.01)
G PHYSICS
01
MEASURING; TESTING
L
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
17
Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
G PHYSICS
01
MEASURING; TESTING
M
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
17
Testing of vehicles
007
of wheeled or endless-tracked vehicles
02
of tyres
Applicants:
JONES, Barbara, Lynn [GB/GB]; GB (UsOnly)
SMITH, Paul [GB/GB]; GB (UsOnly)
STOLLERY, David [GB/GB]; GB (UsOnly)
CLIFTON, Jason, Mark [GB/GB]; GB (UsOnly)
SNAP-ON EQUIPMENT LIMITED [GB/GB]; Unit 12 Horsleys Fields King's Lynn Norfolk PE30 5DD, GB (AllExceptUS)
Inventors:
JONES, Barbara, Lynn; GB
SMITH, Paul; GB
STOLLERY, David; GB
CLIFTON, Jason, Mark; GB
Agent:
ARCHER, Philip, Bruce; Urquhart-Dykes & Lord New Priestgate House 57 Priestgate Peterborough Cambs PE1 1JX, GB
Priority Data:
9709962.617.05.1997GB
Title (EN) METHOD AND APPARATUS FOR TYRE PRESSURE DETERMINATION
(FR) PROCEDE ET APPAREIL POUR DETERMINER LA PRESSION DE GONFLAGE DES PNEUS
Abstract:
(EN) Method and apparatus for tyre pressure determination, for example off-vehicle during inflation on a tyre changer, is based upon impact vibrational input and corresponding waveform generation by a piezoelectric cable transducer. Analysis of the waveform output on a frequency or time-base shift with respect to pressure provides a basis for numerical pressure determination based on identification of dominant peaks. Repeated constant level impacts by a solenoid-operated hammer device during inflation enables monitoring of the dominant peak and thus inflation pressure.
(FR) La présente invention concerne un procédé et un appareil permettant de déterminer la pression de gonflage d'un pneu, par exemple, non monté sur le véhicule pendant son gonflage sur une installation de changement de pneus, sur la base des vibrations de choc entrées et des formes d'ondes correspondantes produites par un transducteur piézo-électrique. L'analyse des formes d'ondes sortantes et de leur décalage en fréquences ou dans le temps par rapport à la pression, fournit une base pour la détermination numérique de la pression en fonction de l'identification des pics dominants. Des chocs répétés de niveau constant par un marteau à solénoïde pendant le gonflage permettant la surveillance du pic dominant et par conséquent, de la pression de gonflage.
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Designated States: AU, CA, CN, JP, KR, MX, US
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)