Global Patent Index - EP 0820530 B1

EP 0820530 B1 2001-05-16 - Screwdriver or screwdriver bit

Title (en)

Screwdriver or screwdriver bit

Title (de)

Schraubendreher oder Schraubendrehereinsatz

Title (fr)

Tournevis ou embout de tournevis

Publication

EP 0820530 B1 (DE)

Application

EP 96909106 A

Priority

  • DE 19513366 A
  • EP 9601226 W

Abstract (en)

[origin: DE19513366A1] The invention concerns a screwdriver, screwdriver bit or similar device with a tip having radially disposed shaped-section engagement surfaces produced preferably by machining or forming, the surface layer forming the working surface being harder than the core of the tip. So that the tool suffers less wear, there is an intermediate layer between the hard surface layer and the core. In this intermediate layer, the hardness decreases with depth from the surface to the core. The intermediate layer is between 0.05 and 0.2 mm thick and the hardness gradient is 1500 to 3000 HV/mm.

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

C21D 9/00; B25B 15/00; C21D 1/06

IPC 8 full level (invention and additional information)

B25B 15/00 (2006.01); C21D 6/00 (2006.01); C21D 9/00 (2006.01); C23C 8/38 (2006.01)

CPC (invention and additional information)

C21D 6/001 (2013.01); B25B 15/001 (2013.01); C21D 9/0068 (2013.01); C23C 8/38 (2013.01); C21D 2221/10 (2013.01); Y10S 81/90 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19513366 A1 19961010; AU 5272796 A 19961030; EP 0820530 A1 19980128; EP 0820530 B1 20010516; US 5953969 A 19990921; WO 9632508 A1 19961017

INPADOC legal status


2011-02-28 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20101001

2009-08-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20090311

- Year of fee payment: 14

2005-03-21 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050321

2003-01-10 [REG FR ST] NOTIFICATION OF LAPSE

2002-11-29 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20021129

2002-11-13 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20020321

2002-05-08 [26N] NO OPPOSITION FILED

2002-03-21 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20020321

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-08-07 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: STUDIO JAUMANN P. & C. S.N.C.

2001-06-21 [REF] CORRESPONDS TO:

- Document: DE 59606915 20010621

2001-06-15 [ET] FR: TRANSLATION FILED

2001-06-06 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20010516

2001-05-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

2000-07-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000531

1999-12-15 [RTI1] TITLE (CORRECTION)

- Free text: SCREWDRIVER OR SCREWDRIVER BIT

1998-01-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970910

1998-01-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT