Global Patent Index - EP 0981726 A1

EP 0981726 A1 2000-03-01 - METHOD AND APPARATUS FOR TYRE PRESSURE DETERMINATION

Title (en)

METHOD AND APPARATUS FOR TYRE PRESSURE DETERMINATION

Title (de)

METHODE UND GERÄT ZUR REIFENLUFTDRUCKBESTIMMUNG

Title (fr)

PROCEDE ET APPAREIL POUR DETERMINER LA PRESSION DE GONFLAGE DES PNEUS

Publication

EP 0981726 A1 (EN)

Application

EP 98921588 A

Priority

  • GB 9801301 W
  • GB 9709962 A

Abstract (en)

[origin: GB2325303A] The invention is based upon impact vibrational input and corresponding waveform generation by a piezo-electric 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.

IPC 1-7 (main, further and additional classification)

G01L 17/00

IPC 8 full level (invention and additional information)

B60C 23/00 (2006.01); G01L 17/00 (2006.01); G01M 17/02 (2006.01)

CPC (invention and additional information)

G01L 17/005 (2013.01); G01M 17/02 (2013.01)

Citation (search report)

See references of WO 9853289A1

Designated contracting state (EPC)

AT CH DE FR GB IE IT LI NL SE

EPO simple patent family

GB 2325303 A 19981118; GB 2325303 B 20010509; GB 9810404 D0 19980715; AU 732281 B2 20010412; AU 7438398 A 19981211; CA 2289532 A1 19981126; CN 1256753 A 20000614; EP 0981726 A1 20000301; GB 9709962 D0 19970709; JP 2001527650 A 20011225; KR 20010012644 A 20010226; WO 9853289 A1 19981126

INPADOC legal status


2003-12-17 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030604

2003-03-12 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030124

2000-03-01 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991217

2000-03-01 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT CH DE FR GB IE IT LI NL SE