Patents Assigned to Haldex AB
  • Patent number: 5833035
    Abstract: A disc brake caliper comprises a housing (1) to be arranged to straddle a vehicule brake disc, a cover (2) attached to the housing, two thrust sleeves (8), which are connected to a brake pad (5) and which are axially movable in the housing, a cross bar (9) connecting the two thrust sleeves, and a lever (17) for transmitting a brake force from a brake cylinder (4), attached to the caliper, to a cross bar. Bearing tappets (20), parallel with the cross bar, are fixedly connected to the inside of the cover. The lever has a curved wedge (19) with two cylindrical surfaces (19', 19") in engagement with corresponding cylindrical surfaces of the bearing tappets and the cross bar, respectively. An adjuster mechanism (28) is arranged on a splined shaft (29) rotatably journalled in the bearing tappets.
    Type: Grant
    Filed: April 27, 1997
    Date of Patent: November 10, 1998
    Assignee: Haldex AB
    Inventor: Lars Severinsson
  • Patent number: 5730172
    Abstract: An inlet valve for an air drier between an inlet (35) from a compressor and an inlet bore (32) comprises an axially movable valve element (31), a spring (34) for biasing the valve element into a closing position against a seat (30'), and a valve element shoulder (31'), on which the pressure in the inlet is arranged to act in a valve opening direction. A sealing on the shoulder is in the form of a U-sealing (36) allowing air under pressure admitted to the underside of the valve element for urging the latter in a valve closing direction to pass by the sealing to the inlet but preventing flow in the opposite direction.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: March 24, 1998
    Assignee: Haldex AB
    Inventors: Gerald Rodell, Sven-Olof Larsson, Curtis S. Snyder
  • Patent number: 5664647
    Abstract: A brake lever for an automotive S-cam drum brake has a toothed conical clutch (14) for transmitting torque in one direction between two coaxial members (4, 10) rotatably arranged relative to each other. Each tooth in this clutch is asymmetrical, its torque transmitting flank forming a greater angle with the normal than its opposite flank.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: September 9, 1997
    Assignee: Haldex AB
    Inventor: Kjell Edvardsson
  • Patent number: 5626210
    Abstract: A control arm arrangement for a road vehicle brake lever (1) comprises a control arm (3) pivotally connected to the brake lever and an anchor bracket (4) for attachment to an underframe part (2) of the vehicle. Facing ends of the control arm and the anchor bracket are provided with flanges (10, 11), so that the closely cooperating ends are U-shaped in cross-section.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: May 6, 1997
    Assignee: Haldex AB
    Inventor: Ake Nelander
  • Patent number: 5327999
    Abstract: A brake lever for an S-cam brake has a worm wheel (3) engaging the S-cam shaft and a worm screw (4) meshing therewith. A clutch wheel (6) on the worm screw forms a clutch (8) therewith under the bias of a compression spring (9). A control movement is transmitted from an external reference point to the clutch wheel via a pinion (15), a carrier wheel (16) and a control screw (18), the common axis of these three parts being perpendicular to the worm screw, wherein the control screw meshes with the clutch wheel. The carrier wheel can be turned relative to the pinion an angular distance corresponding to the desired slack and is biassed to one end position by a torsion spring (17), which is also used to engage a one-way clutch (19) between the carrier wheel and the control screw.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: July 12, 1994
    Assignee: Haldex AB
    Inventor: Ake Nelander
  • Patent number: 5234482
    Abstract: A retarding valve at a single-tower air drier for obtaining a controlled time for the flow of regenerating air from an air tank to a desiccant cartridge has a movable valve stem (7), which is provided with a piston (14) having a slightly smaller diameter than a chamber (13), in which it is movable in hydraulic oil (15), so that a narrow circumferential slit for the oil is formed. The valve stem with its piston is biased by a spring (16) from a position--at the beginning of each regenerating cycle--permitting flow through the valve to a position closing off flow through the valve.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: August 10, 1993
    Assignee: Haldex AB
    Inventors: Sven-Olof Larsson, Bo Lundstrom, Lars M. Severinsson
  • Patent number: 5103944
    Abstract: A wedge-type actuator for actuating drum brakes including guide rollers positioned between the wedge and a plunger that contacts the leading brake shoe. The guide rollers are carried between a guiding surface on the wedge and a guiding surface in the housing, to take up the reaction forces caused by the larger actuation forces needed to operate the trailing brake shoe. The disclosed arrangement provides more even braking forces, and thereby results in more even brake shoe wear.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: April 14, 1992
    Assignee: Haldex AB
    Inventor: Lars M. Severinsson
  • Patent number: 4699256
    Abstract: A wedge brake arrangement for drum brakes on heavy road vehicles includes a brake cylinder push rod (29), plungers (26) axially movable perpendicularly to the push rod, and force transmitting rollers (32) between parallel wedge surfaces at the end of the push rod and on the respective plunger. In order to obtain full control over the reaction forces from the plungers (26) at brake operation the push rod (29) is guided by the housing (25) of the arrangement in the plane of the plungers by means of guide rollers (35) between plane surfaces at the end of the push rod (29) and in the housing (25), respectively, the surfaces being parallel with each other and with the axis of the push rod.
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: October 13, 1987
    Assignee: Haldex AB
    Inventor: Lars M. Severinsson
  • Patent number: 4570228
    Abstract: The invention relates to taximeter installations including mobile taximeter apparatus (2) coacting via radio (3, 4) with a central computer (1). Each taximeter (2) includes registers (15, 26) for collecting pulses relating to travelled distance and consumed time, the central computer (1) initiating periodic read-out (20, 21, 29, 30) of the register content, inter alia for fare price calculation. The central computer also sets a criterion frequency value, so that the pulses related to travelled distance are prevented by means of a circuit (9) from being stored in the register (15) when the frequency of said pulses falls below the criterion frequency, time pulses being stored in a register (26) when the criterion frequency is not attained by the travelled distance pulses.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: February 11, 1986
    Assignee: Haldex AB
    Inventor: Krister Ahlberg
  • Patent number: 4510379
    Abstract: A control device for an instrument (10) attached to a vehicle wheel hub for recording the distance covered by the vehicle comprises a counting mechanism with several number-carrying wheels (25), a stamping mechanism (29,30) for stamping cards, a means (14) for advancing the number-carrying wheels of the counting mechanism in response to the distance covered, and a pendulum, the oscillation axis of which coincides with the vehicle wheel axle, and which by substantially standing still effects a relative movement in relation to the recording instrument. This movement is utilized for driving the means for advancing the number-carrying wheels of the counting mechanism via a gear unit (12). The means for advancing the number-carrying wheels of the counting mechanism comprise a feed hook (14), which is deformed permanently when number-carrying wheels of the counting mechanism are blocked, and thereby effects permanent closing of a first electric contact (14b-34).
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: April 9, 1985
    Assignee: Haldex AB
    Inventors: Sven Wallqvist, Rune Sund
  • Patent number: 4306580
    Abstract: An overflow return tank, especially for receiving return fuel at internal combustion engines with fuel gauge, comprising a receptacle (20, 21, 22) with an inlet (23) located upwardly for a return flow and an outlet (25) and an air bleed hole (24), and with a float (30) located within the receptacle for controlling a valve (26, 36, 31a) located at the outlet of the receptacle. The valve comprises a soft, elastic diaphragm (36), which is connected to the float (30) and upon lifting of the float gradually exposes the outlet (25) by being bent, so that fuel can be taken out from the overflow return tank. Owing to the design of the valve only a small lifting force from the float is required, whereby the fuel amount in the overflow return tank can be maintained substantially constant even at great variations in the return flow. The overflow return tank, besides, can be given small dimensions.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: December 22, 1981
    Assignee: Haldex AB
    Inventors: Sven Wallquist, Rune Sund
  • Patent number: 4250748
    Abstract: Two pairs of reciprocating pistons are selectively driven by a volume of fluid to be measured. The pairs are perpendicular to one another and connected to a crank for converting the reciprocating motion into rotary motion to magnetically drive a recording means. A valve is driven by the crank for selectively controlling the flow of the liquid into the piston bores. A conical member limits the stroke of one set of the pistons thereby adjusting the stroke of the meter. The member has a bimetal unit which automatically adjusts the stroke in response to the temperature of the liquid.
    Type: Grant
    Filed: August 15, 1978
    Date of Patent: February 17, 1981
    Assignee: Haldex AB
    Inventor: Sven Wallqvist
  • Patent number: D293604
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: January 5, 1988
    Assignee: Haldex AB
    Inventor: Sten Andersson