Global Patent Index - EP 1013943 A1

EP 1013943 A1 2000-06-28 - Limit switch device for fluid actuators

Title (en)

Limit switch device for fluid actuators

Title (de)

Anschlagschaltvorrichtung für Druckmittelzylinder

Title (fr)

Dispositif de fin-de-courses pour vérins à fluide

Publication

EP 1013943 A1 (EN)

Application

EP 98650090 A

Priority

EP 98650090 A

Abstract (en)

A cylinder 1 has an outer housing 2 defining a pressure chamber and an inner piston 3 which is slidably movable through the pressure chamber. An electrical signal is provided from within the pressure chamber depending on the axial position of the piston 3 within the chamber. The piston 3 carries a contacting device which completes a circuit and provides a control signal. The control signal is generated at a pre-determined position before the piston 3 reaches the end of the stroke. The travel of the piston 3 is not restricted when the circuit is completed. A full bore side contact device is provided by an auxiliary plunger (31) which is slidably movable against the biassing of a spring 32 when the contact is made with a contact is made with a contact pin 30. <IMAGE>

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

F15B 15/28

IPC 8 full level (invention and additional information)

F15B 15/28 (2006.01)

CPC (invention and additional information)

F15B 15/2807 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR IE IT

EPO simple patent family

EP 1013943 A1 20000628

INPADOC legal status


2003-01-15 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020702

2001-03-07 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR IE IT

2001-01-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001130

2000-06-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR IE IT

2000-06-28 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI