Global Patent Index - EP 0739691 B1

EP 0739691 B1 2000-03-08 - Apparatus for adjusting the stroke of a fluid-actuated percussion device

Title (en)

Apparatus for adjusting the stroke of a fluid-actuated percussion device

Title (de)

Einrichtung zum Verstellen des Hubes von fluidgesteuerten Schlageinrichtungen

Title (fr)

Appareil pour le réglage de la course de frappe d'un appareil à percussion mû par un fluide

Publication

EP 0739691 B1 (DE)

Application

EP 96890077 A

Priority

AT 73195 A

Abstract (en)

[origin: EP0739691A1] A medium under pressure acts on the plunger (8), which works with control drillings or channels at intervals in its axial direction. These work with control edges on the piston (1) of the mechanism, alternately connecting working chambers for the piston to the pressure and return pipes. The plunger can be coupled to a rotary setting member (17). When rotated into one position, the plunger slides axially under the pressure of the medium and against spring action. It cannot slide in any other position. The plunger can have drillings or channels offset in the axial and peripheral directions. With the plunger so coupled to the member so that it cannot slide, the control drillings or channels can be connected to the control edges on the piston.

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

B25D 9/26

IPC 8 full level (invention and additional information)

B25D 9/26 (2006.01); E21B 1/24 (2006.01)

CPC (invention and additional information)

B25D 9/26 (2013.01)

Designated contracting state (EPC)

CH DE FI FR GB LI SE

EPO simple patent family

EP 0739691 A1 19961030; EP 0739691 B1 20000308; AT 407280 B 20010226; AT A73195 A 20000615; DE 59604569 D1 20000413

INPADOC legal status


2002-02-01 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2002-02-01 [REG FR ST] NOTIFICATION OF LAPSE

2001-12-14 [REG CH PL] PATENT CEASED

2001-12-12 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20010424

2001-12-03 [EUG] SE: EUROPEAN PATENT HAS LAPSED

2001-05-23 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2001-02-21 [26N] NO OPPOSITION FILED

2000-07-13 [ET] FR: TRANSLATION FILED

2000-07-05 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000612

2000-04-13 [REF] CORRESPONDS TO:

- Document: DE 59604569 20000413

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2000-03-15 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2000-03-15 [REG CH NV] NEW AGENT

- Representative's name: HANS RUDOLF GACHNANG PATENTANWALT

2000-03-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): CH DE FI FR GB LI SE

1999-09-29 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: BOEHLER PNEUMATIK INTERNATIONAL GMBH & CO KG

1999-04-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990224

1997-06-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970410

1996-10-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FI FR GB LI SE