Leaf Patents (Class 267/7)
  • Patent number: 8870169
    Abstract: Load stabilizing inserts for a motor vehicle. The inserts include a base plate, a top plate spaced apart from and angularly pivotable with respect to the base plate, and one or more contact plates. The insert is sized and shaped for insertion between an overload spring and a spring pack in a motor vehicle such as a pickup truck. Four load stabilizing inserts may be installed to provide stable operation of the pickup truck when loaded at or near the maximum design gross operating weight of the vehicle. During those periods when the truck is not loaded, such as when a truck camper is not installed, the load stabilizing inserts may be angularly adjusted and secured in an open, non-working position, to provide a relatively soft ride during such position.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: October 28, 2014
    Inventor: Jack Kay
  • Patent number: 8459676
    Abstract: A bearing mechanism (4) for a transverse leaf spring (1) for mounting in the region of a vehicle axle of a vehicle. The bearing mechanism (4) has two outer bearing shells (6, 7) that can be connected together and insertion devices (9, 10) with at least some regions of which are encompassed by the outer bearing shells (6, 7) and which each comprise at least two layer elements (9A, 9B, 9C and 10A, 10B, 10C) with different stiffnesses. In the assembled state, the insertion devices (9, 10) are each disposed between the outer bearing shells (6, 7) and the transverse leaf spring (1). The insertion devices (9, 10) can be connected to the outer bearing shells (6, 7) and the transverse leaf spring (1), via a bolt device (8) which connects the outer bearing shells (6, 7) together and to a vehicle chassis at least in a force locking manner.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: June 11, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Jens Heimann, Andreas Vossel, David Vopel, Volker Wagner, Gabriele Fruhmann
  • Patent number: 8444162
    Abstract: A bearing mechanism for a transverse leaf spring that can be mounted near an axle of a vehicle. The bearing mechanism has an outer bearing shell device and insertion devices which have at least some regions encompassed by the outer bearing shell device. Each of the insertion devices comprise at least two layer elements which have different stiffness. In the assembled state, the insertion devices are each disposed between the outer bearing shell device and the transverse leaf spring. The outer bearing shell device comprises a one-piece bearing ring element, and the insertion devices can be operatively connected, at least in a force locking manner, to the bearing ring element and the transverse leaf spring, via tensioning elements.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: May 21, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Gabriele Fruhmann, Volker Wagner, Jens Heimann
  • Patent number: 8444163
    Abstract: A bearing mechanism for a transverse leaf spring that can be mounted in the region of an axle of a vehicle. The bearing mechanism has an outer bearing shell device and insertion devices which are at least partially encompassed by the outer bearing shell device and comprise layer elements with different stiffnesses. In the assembled state, the insertion devices are each disposed between the outer bearing shell device and the transverse leaf spring. In the region of a support surface of the transverse leaf spring, a recess is formed for each of the insertion devices in which the insertion devices engage in a form-locking manner. The insertion devices are each formed in the contact surfaces facing the support surfaces of the transverse leaf spring, having at least one receiving device into which, in the assembled state of the insertion devices, a region of the transverse leaf spring engages.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: May 21, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Gabriele Fruhmann, Volker Wagner, Peter Hofmann, Jens Heimann
  • Patent number: 8360454
    Abstract: A bearing mechanism for a transverse leaf spring that can be mounted in the region of an axle of a vehicle. The bearing mechanism comprises an outer bearing shell and insertion devices which have at least some regions encompassed by the outer bearing shell, and which each comprise layered elements having different stiffness. When assembled, the insertion devices are disposed between the outer bearing shell and the leaf spring. The leaf spring has a recess into which sections of the insertion devices engage. The recesses are located on opposed top and bottom surfaces of the leaf spring, with respect to a vertical axis of the vehicle. In the mounted state of the leaf spring, the recesses are delimited by top and bottom edge regions that are formed between top, bottom and lateral surfaces, in the longitudinal direction of the vehicle.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: January 29, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Gabriele Fruhmann, Volker Wagner, Jens Heimann, Peter Hofmann
  • Patent number: 8360453
    Abstract: A bearing mechanism for a transverse leaf spring mounted near a vehicle axle of a vehicle. The bearing mechanism has an outer bearing shell device and insertion devices, which are encompassed by the outer bearing shell device and comprise layer elements of different stiffness. The insertion devices are each disposed between the outer bearing shell device and the transverse leaf spring. First layer elements have a greater stiffness and are positioned between the transverse leaf spring and second layer elements with lower stiffness. The first layer elements are half-shell shaped and convex between end regions and oriented in the axial direction of the transverse leaf spring. The end regions of the first layer elements comprise regions that are concave with respect to the surface of the leaf spring, and free ends of which point away from the surface of the leaf spring.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: January 29, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Gabriele Fruhmann, Hartmut Werries, Peter Hofmann, Christoph Elbers
  • Publication number: 20080284069
    Abstract: The invention relates to a leaf spring (1) consisting of a fibre-composite material and having a central longitudinal section (2) and two adjoining axial end sections for a wheel suspension in a vehicle, the end sections of said leaf spring tapering with respect to the leaf spring width. The leaf spring (1) is composed of resin-impregnated fibre layers and axially orientated uncut first fibres (6) of the fibre-composite material extend the full length of the leaf spring (1) to the two axial ends (5) of said spring. The axial ends (5) of the unfinished untreated leaf spring (1?), when viewed from above, have an essentially V-shaped geometry or an essentially V-shaped notch and thus form two respective limbs (8, 9) lying transversally to the longitudinal extension of the axis of the untreated leaf spring (11), said limbs (8, 9) abutting one another in the finished leaf spring (1).
    Type: Application
    Filed: November 4, 2006
    Publication date: November 20, 2008
    Applicant: IFC COMPOSITE GMBH
    Inventors: Clemens Aulich, Rainer Forster, Heiko Kempe
  • Patent number: 6688586
    Abstract: An integral transverse spring-axle combines the functions of both an axle and a suspension by locating the wheels laterally and longitudinally, in the manner of an axle, and allowing vertical displacements of the wheels, in the manner of a suspension. This is achieved with a leaf spring with a center portion, a pair of center leaves and at least one pair of side leaves both extending oppositely from the center portion. The outboard ends of the leaves attach to the wheel hub carriers/knuckles. The inboard center portion of the spring attaches to the chassis/body frame. The two opposite outboard ends of the spring-axle leaves can move independently of each other. The spring-axle can be of the steered or nonsteered type, and of the driven or non-driven type.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: February 10, 2004
    Inventor: James Moore
  • Patent number: 6361032
    Abstract: A method of increasing lateral stiffness in fiberglass composite leaf springs used in suspension systems. The increase in lateral stiffness is accomplished by introducing two carbon fiber inserts to the longitudinal side regions of a fiberglass composite spring. The amount of volume of carbon fiber inserts is preferably between 10-20% by volume of the total volume of the spring and is a function of the strain characteristics required within the suspension system. The composite leaf spring secures the weight advantages of fiberglass springs as compared with traditional steel leaf springs and improves lateral stiffness that promotes improved handling as well as increased efficiency in the packaging of suspension and fuel storage systems. These new composite springs can be molded from layering preprag tape containing fiberglass, carbon fiber and resin, or from a 3D weaving process.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: March 26, 2002
    Assignee: Visteon Global Technologies, Inc.
    Inventor: Robert C. Lawson
  • Patent number: 6220580
    Abstract: A leaf spring suspension assembly includes a leaf spring assembly having a plurality of vertically stacked leaf springs and a bearing assembly positioned adjacent an end thereof. The bearing assembly includes an upper insulator cup having an upper recess and a lower bracket cap having a lower recess and upper and lower bonded bearings. The upper bonded bearing is received in the upper recess and includes a rigid lower member having an upper elastomer element bonded thereto; the bearing being received adjacent the upper side of the leaf spring assembly. The lower bonded bearing is received in the lower recess and includes a rigid upper member having a lower elastomer element bonded thereto; the lower bearing being received adjacent the lower side of the leaf spring assembly. At least one of the upper and lower elastomer elements includes a spherical elastomer element.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: April 24, 2001
    Assignee: Lord Corporation
    Inventor: Paul J. Balczun
  • Patent number: 5039071
    Abstract: Running gear (1) of a railway vehicle, which is suspended on the undercarriage (2) of the railway vehicel by blade support springs (3) and suspension attachment (8), with the additional arrangement of an additional blade spring as absorption spring (12); the absorption spring (12) is essentially more flexible than the rigid blade support spring (3), and the absorption spring (12), is tensed into the spring band (7) of the blade support spring (3). Blade support spring (3) and absorption spring (12) are kinematically connected in parallel.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: August 13, 1991
    Assignee: Krupp Bruninghaus GmbH
    Inventors: Rudolf Irle, Alfred Lohmann, Boris S. Terlecky