Patents Assigned to Britax-Kolb GmbH & Co.
  • Patent number: 4978087
    Abstract: An acceleration sensor for vehicle-sensitive systems is mounted on a part connected to the vehicle and comprises a mounting part having a baseplate, which has a spherical socket-shaped recess and bearing means for an impulse lever, which between the tip thereof and the part thereof mounted in the bearing means is enlarged to form a spherical socket-shaped cap. A ball which constitutes an inertia mass is provided between the cap and the socket-shaped recess and an actuating member, which preferably consists of a control pawl which is in contact, or almost in contact, with the tip of the impulse lever and is activated by the tip thereof as the ball is moved out of its position of rest by accelerations having predetermined values. The mounting part is directly or indirectly pivoted to a pivoted part of the vehicle, such as a seat or the rest of a seat, on an axis which extends through the region in which the tip of the impulse lever contacts the actuating member.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: December 18, 1990
    Assignee: Britax-Kolb GmbH & Co.
    Inventor: Erhard Tauber
  • Patent number: 4913497
    Abstract: A belt tightener for seat belts in vehicles comprises a device for moving the belt buckle in a belt-tightening sense and for locking the belt buckle at the end of the tightening movement, which device is activated by a so-called vehicle-sensitive system in response to an acceleration or deceleration in excess of predetermined critical values.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: April 3, 1990
    Assignee: Britax-Kolb GmbH & Co.
    Inventors: Walter Knabel, Josef Mayer, Stephan Wentker
  • Patent number: 4858847
    Abstract: In a webbing sensitive sensor, a rotatably mounted sensing pawl (14) is provided on a peripheral control cam surface (24) of a rotatable inertia mass (13) and is pressed by this surface into engagement with an internal tooth region. This peripheral control cam surface (24) has from a predetermined point an outwardly falling characteristic for reducing the torque exerted by the pawl on the inertia mass, so that the engagement motion between the pawl and the internal tooth region is effective independently of manufacturing tolerances.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: August 22, 1989
    Assignee: Britax-Kolb GmbH & Co.
    Inventor: Gottfried Ogris
  • Patent number: 4854644
    Abstract: In the deflection clamping device according to the invention, a control lever (30) acts via a sloped active surface (56) on a movable clamping member represented by a clamping wedge (48) in such a way, that when activation takes place in the direction of motion of the belt, the clamping wedge has a velocity component that is equal to the belt speed at that moment, so that no relative movement in the vertical direction of motion results between the movable clamping wedge and the belt. This is achieved by having a deflection clamping device with a small structural depth and by having low loading forces on the control lever.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: August 8, 1989
    Assignee: Britax-Kolb GmbH & Co.
    Inventor: Hans-Hellmut Ernst
  • Patent number: 4687253
    Abstract: In a safety-belt system comprising a winding and locking mechanism, a clamping device is provided which carries out a clamping of the safety-belt outside the reel winding, wherein this clamping effect is caused by a lifting motion of the winding and locking mechanism or of a part thereof and is fastened by suitable means so that the load-bearing clamping organ comes to engage with its entire clamping surface on the belt and the approach of the clamping surface to the belt is synchronized. According to the invention clamping readiness of the clamping organ is begun on every vehicle deceleration of more than 0.45 g and on every belt withdrawal acceleration of more than 1.5 g. The belt winder contains, apart from the driving spring and the winding shaft, only the sensor and control mechanism, and does not require any separate locking elements in order to cause preblocking.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: August 18, 1987
    Assignee: Britax-Kolb GmbH & Co.
    Inventors: Hans-Hellmut Ernst, Edmund Lochbihler
  • Patent number: 4682791
    Abstract: The invention relates to a deflection device with means for direct clamping locking of the belt which takes place according to the severity of the loading in a progressive manner. With the usually occurring locking in normal vehicle conditions, such as for example upon braking above 0.4 g, a first arresting action takes place with a weak clamping which does not damage the textile webbing. Only in the case of higher loading, which occurs in the case of an accident, a second arresting action occurs which effects secure and slip-free load transfer by application of aggressive clamping means. This type of locking is--excluding taut belts--the most efficient. It results in very small initial displacement of the occupant. The use-cost analysis is optimal since light and economic winders can be employed.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: July 28, 1987
    Assignee: Britax-Kolb GmbH & Co.
    Inventor: Hans-H. Ernst
  • Patent number: 4607805
    Abstract: An emergency locking retractor for a vehicle safety belt has a spool rotatably mounted on a frame, primary locking means arranged to block rotation of the spool relative to the frame and secondary locking means for actuating the primary locking means. The secondary locking means including an inertia sensor and a pawl pivotally mounted on a carrier which is movable relative to the frame, the pawl being movable by the inertia sensor into simultaneous engagement with a stop member on the carrier and a ratchet wheel coupled to the spool so that subsequent rotation of the spool of the belt protraction direction causes movement of the carrier which in turn actuates the primary locking means. The stop member is so positioned relative to the pivotal mounting thereof that the pawl comes into abutment with the stop member before its pawl tip abuts against the periphery of the ratchet wheel between adjacent teeth thereof.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: August 26, 1986
    Assignee: Britax-Kolb GmbH & Co.
    Inventors: Wilfried Burghardt, Hans-Hellmut Ernst, Josef Mayer
  • Patent number: 4597545
    Abstract: A seat belt tensioning system for a motor vehicle comprises a locking retractor for a seat belt and a pre-tensioning device for pre-tensioning the seat belt, the pre-tensioning device comprising mounting means for mounting the retractor on a fixed mounting member, the mounting means permitting movement of the retractor in a direction opposite to the protraction direction of the belt. Such movement of the retractor may be caused by a cable coupled to the front bumper of the vehicle.
    Type: Grant
    Filed: May 9, 1985
    Date of Patent: July 1, 1986
    Assignee: Britax-Kolb GmbH & Co.
    Inventor: Wilfried Burghardt
  • Patent number: 4597586
    Abstract: Apparatus for tensioning a strap of a vehicle safety belt system, comprises a cylindrical drum, a first roller journaled on a stationary axis parallel to that of the drum and spaced radially outwardly from the surface thereof, a second roller mounted with its axis parallel to the axis of the drum at a radius between that of the surface of the drum and the first roller, and pyrotechnically powered means for causing angular movement of the second roller about the axis of the drum. Guide means are located at a greater radial distance from the axis of the drum than the second roller and oriented so that, prior to detonation of the pyrotechnic charge, the angular position of the second roller about the axis of the drum is between the first roller and the additional guide means. The strap passes between the second roller and the surface of the drum but radially outwardly of the first roller. Prior to detonation of the pyrotechnic charge, the strap does not touch the surface of the drum.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: July 1, 1986
    Assignee: Britax-Kolb GmbH & Co.
    Inventors: Wilfried Burghardt, Karl E. Nilsson, Hans-Hellmut Ernst
  • Patent number: 4522350
    Abstract: The main locking mechanism of an emergency locking retractor comprises teeth on the flanges of the spool on which the belt is wound, the spool being mounted in bearings arranged to permit limited translational movement in a direction perpendicular to the axis of rotation, between a position in which said teeth formations engage with complementary teeth on the frame of the retractor. Actuating means which are arranged to cause movement of the spool into its engaged position, comprise a ratchet wheel mounted on the spool for rotation and translational movement therewith, a pivotally mounted control member and a pawl which can be moved by a ball-in-saucer sensor into a position in which it couples the control member to the ratchet wheel, so that angular movement of the ratchet wheel in the belt unwinding direction causes angular movement of the control member about a pivot, thus moving the spool so as to bring the teeth on the flanges into locking engagement with the teeth on the frame.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: June 11, 1985
    Assignee: Britax-Kolb GmbH & Co.
    Inventor: Hans-Hellmut Ernst
  • Patent number: 4506844
    Abstract: The main locking mechanism of an emergency locking retractor for a vehicle safety belt comprises teeth on the flanges of the spool on which the belt is wound, the spool being mounted in bearings arranged to permit limited movement in a direction perpendicular to the axis of rotation, between a position in which said teeth engage with complementary teeth on the frame of the retractor.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: March 26, 1985
    Assignee: Britax-Kolb GmbH & Co.
    Inventor: Hans-Hellmut Ernst