Patents Assigned to Boge AG
  • Patent number: 4955588
    Abstract: Bearing for the elastic mounting of machines, machine parts and/or vehicle parts in which the rubber body located between the fasteners is designed so that the oxygen in the atmospheric air cannot come in contact with the rubber body. For this purpose the surface of the rubber body facing the atmosphere is covered by a liquid-tight membrane which is impermeable to gas and/or oxygen, and the cavity betwween the rubber body and the membrane is filled with an inert gas and/or an inert liquid. Alternatively, the surface of the rubber body facing the atmosphere can be coateed with a gas-tight, elastic material.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: September 11, 1990
    Assignee: Boge AG
    Inventors: Horst Reuter, Jorn-Rainer Quast, Roland Schall
  • Patent number: 4953833
    Abstract: A hydraulically damping elastic bearing comprises an inner tube, an outer tube concentric or eccentric in relation to and located at some distance from the inner tube. An elastic part is inserted between them to include at least two chambers filled with damping medium. The two chambers are connected to one another by a flow connnection. To prevent cavitation and/or the formation of gas bubbles in the damping fluid, and to prevent a possible underpressure in a chamber when the chambers are not symmetrical, the damping medium is pressurized with an overpressure which is above atmospheric pressure.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: September 4, 1990
    Assignee: Boge AG
    Inventors: Kurt Schmidt, Detlef Waloszyk
  • Patent number: 4899996
    Abstract: This invention relates to a hydraulically damping elastic bearing, in particular engine mounts for motor vehicles, with two fastening devices opposite one another, an elastomer resilient body between them, and a controllable electromagnet located on one fastening device, consisting of coil and armature, with which a magnetically active element can interact to change the suspension characteristic of the elastic bearing. To achieve a variable, dynamic damping by way of an electrical control, with simultaneous hydraulic action, the interior of the elastic bearing is divided into two chambers filled with damping fluid. The chambers are connected with one another by means of at least one throttle, whereby the coil and the axially movable armature of the electromagnet are designed partly as the partition between the chambers.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: February 13, 1990
    Assignee: Boge AG
    Inventors: Jurgen Maassen, Klaus Hafner
  • Patent number: 4896867
    Abstract: Hydraulically damping elastic bearing, in particular engine mounts for motor vehicles, with two rigid end walls opposite one another in the axial direction and at least two chambers containing damping fluid arranged axially one behind the other, whereby the chambers are connected for fluid communications with one another by a passage running in an annular fashion. For the variable modification of the length of the passage, partitions are inserted in the component containing the passage, which partitions divide the passage into individual passage segments connected for fluid communication with one another by an opening.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: January 30, 1990
    Assignee: Boge AG
    Inventors: Georg Schyboll, Heinz Brenner
  • Patent number: 4880086
    Abstract: Adjustable vibration damper, in particular for motor vehicles, with a cylinder containing a damping fluid, an axially-movable piston rod inserted in the cylinder in a sealed manner, and a damping piston fastened to the piston rod, which piston divides the cylinder into two work chambers, whereby a damping valve with an axially-movable valve body and a valve seat controls the effective cross section of a damping passage. Control of such a vibration damper should guarantee a continuous adjustment capability, a high adjustment speed, a good temperature behavior and reliably reproducible damping force characteristics, as well as the use of a small amount of control energy.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: November 14, 1989
    Assignee: Boge AG
    Inventors: Heinz Knecht, Norbert Ackermann
  • Patent number: 4850460
    Abstract: Shock absorber for vehicles, in which there is a damping element, which has a work cylinder holding a damping medium and divided into two work chambers by a piston, whereby at least partly to control the damping force, an electromagnetically activated and axially moving valve body of a valve pressurizes a flow passage. A variable damping adjustment becomes possible, and by means of a variably controlled damping valve, any desired adjustable damping of the decompression and compression stage can be achieved. In addition, by varying the effective hydraulically-influenced functional surfaces of the valve body, the switching, frequency, closing and opening action of the valve body, designed as the armature of an electromagnet, can be influenced. A seat surface is oriented together with the end surface of the valve body, whereby at least a portion of the end surface of the valve body and of the valve seat are located at a distance from one another.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: July 25, 1989
    Assignee: Boge AG
    Inventors: Heinz Knecht, Alfred Preukschat
  • Patent number: 4802561
    Abstract: Adjustable shock absorber, particularly for motor vehicles, which includes a cylinder containing damping fluid, an axially-movable piston rod which projects in a sealed manner into the cylinder, and a piston fastened to the rod and dividing the cylinder chamber into two working chambers interconnected by at least one passage which produces a damping force, the effective cross section of which can be adjusted by means of a throttle valve. The bypass includes a flexible membrane enclosed in a chamber such that on the one side of the membrane, there is at least one inflow passageway and at least one outflow passageway of the passage which can be sealed off from one another by the membrane, a control edge (or valve seat) which interacts with the membrane, and on the other side of the membrane, a control chamber carrying a control bypass flow and sealed off from the passage.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: February 7, 1989
    Assignee: Boge AG
    Inventors: Heinz Knecht, Norbert Ackermann
  • Patent number: 4789144
    Abstract: Hydraulically damping motor bearing, elastic bearing, etc., with at least two chambers containing damping fluid and located axially one behind the other, at least one of which exhibits a wall designed as an elastic spring element, whereby the chambers are separated from one another by a partition and are connected with one another by means of a passage. To achieve a passage which is of simple design and easy to construct, the wall of the passage is formed partly by an elastic portion and partly by a rigid portion of the partition, and both the rigid portion and the elastic portion have a discharge opening emptying into a chamber.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: December 6, 1988
    Assignee: Boge AG
    Inventor: Heinrich Brenner
  • Patent number: 4785920
    Abstract: Shock absorber for motor vehicles, on which there is a damping element, which exhibits a working cylinder to hold a working medium, divided by a piston into two working chambers, whereby an electromagnetically-activated and axially-movable valve body of the valve pressurizes a flow passage, at least partly to control the damping force. The object of the invention is to make possible a variable damping adjustment, whereby by means of a variably-controllable damping valve, an adjustable damping of the decompression and compression stages can be achieved. In addition, by variation of the effective hydraulically-influenced functional surfaces of the valve body, the switching, frequency, closing and opening action of the valve body, designed as the armature of an electromagnet, can be influenced.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: November 22, 1988
    Assignee: Boge AG
    Inventors: Heinz Knecht, Alfred Preukschat