Global Patent Index - EP 1077852 A1

EP 1077852 A1 2001-02-28 - VACUUM BRAKE BOOSTER HAVING AN ELECTRIC SIGNAL GENERATING DEVICE

Title (en)

VACUUM BRAKE BOOSTER HAVING AN ELECTRIC SIGNAL GENERATING DEVICE

Title (de)

UNTERDRUCKBREMSKRAFTVERSTÄRKER MIT ELEKTRISCHER SIGNALERZEUGUNGSEINRICHTUNG

Title (fr)

SERVOFREIN A DEPRESSION COMPORTANT UN SYSTEME DE PRODUCTION DE SIGNAL ELECTRIQUE

Publication

EP 1077852 A1 (DE)

Application

EP 99923519 A

Priority

  • DE 19822010 A
  • EP 9903042 W

Abstract (en)

[origin: DE19822010C1] The invention relates to a vacuum brake booster (10) comprising a housing (12) and a wall (14) which can move in an axial manner and which is arranged in said housing. The wall divides the housing (12) into a first chamber (18) and into a second chamber (20) which is separated therefrom. In order to detect the actuating state of the vacuum brake booster (10), the vacuum brake booster is provided with a device (34) for generating an electric signal which indicates the actuation of said booster. The device (34) comprises a tube (38) which is guided into the housing (12) through a wall (36) thereof and which is sealed from outside. An axially displaceable tappet (40) is arranged in the tube (38). Said tappet (40) interacts with an electric switching mechanism (44) and is spring-loaded in a direction toward the spring element (46). The spring element (46) is supported on the moveable wall (14) when said wall is in the rest position, and thus does not transmit force to the tappet (40) which leads to the displacement of the same. After the moveable wall (14) is displaced from the rest position, the spring element (46) acts upon the tappet head (42) of the tappet (40) and provokes an axial displacement of the same which actuates the electric switching mechanism (44).

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

B60T 13/52; B60T 17/22

IPC 8 full level (invention and additional information)

B60T 13/52 (2006.01); B60T 13/563 (2006.01); B60T 13/567 (2006.01); B60T 17/22 (2006.01)

CPC (invention and additional information)

B60T 13/52 (2013.01); B60T 13/563 (2013.01); B60T 13/5675 (2013.01); B60T 17/22 (2013.01)

Citation (search report)

See references of WO 9959855A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

DE 19822010 C1 19990602; EP 1077852 A1 20010228; WO 9959855 A1 19991125

INPADOC legal status


2002-12-11 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020604

2002-03-13 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020123

2001-02-28 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001108

2001-02-28 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB