For Elliptic Spring Patents (Class 267/261)
  • Patent number: 8501062
    Abstract: A composite includes a first preform and a second preform spaced from and in overlying relationship to the first preform. The second preform defines at least one first opening extending therethrough along an axis transverse to the first preform. A first surface layer is disposed adjacent to the second preform and on an opposite side of the second preform from the first preform. A polymeric composition including the reaction product of an isocyanate component and an isocyanate-reactive component is disposed between the first preform and the second preform. The polymeric composition adheres the first surface layer to the second preform through the at least one first opening. The surface layer is adhered to the second preform during molding of the composite article and in the absence of additional adhesive, thereby reducing production time and cost of the composite article.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: August 6, 2013
    Assignee: BASF Aktiengesellschaft
    Inventors: James F. Turnbach, David R. Phelps, Danny Snider
  • Patent number: 5219431
    Abstract: A torsional vibration damping mechanism (30) is disclosed in a free standing clutch plate (26) for a vehicle driveline. The mechanism (30) includes composite C-shaped springs (41,42) for attenuating driveline torsionals and transmitting driveline torque, and a viscous damper (48) for controlling the rate of flexing of the springs. The mechanism also includes input and output drives (46,44) for flexing the springs only radially inward. The C-shaped composite springs are formed by removing a minor arc of a closed ring comprising a plurality of layers of reinforcing filaments, or by cutting a composite cylinder into closed rings and removing the minor arc.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: June 15, 1993
    Assignee: Eaton Corporation
    Inventor: Dale A. Stretch
  • Patent number: 5137300
    Abstract: Selectively engagable auxiliary leaf springs (38) for vertically supporting a vehicle chassis (32) on an axle assembly (22) in parallel with main suspension springs (34). Forward and rear ends (38b, 38a) of the auxiliary leaf springs are pivotally attached to the vehicle chassis and the axle assembly, and pivotal movement of the forward ends (38b) is inhibited or prevented by engagement of actuator assemblies (56 or 100 or 170) to engage the auxiliary leaf springs. A control system automatically engages the actuator assemblies in response to load added to the vehicle and/ot vehicle steering movement and/or rapid vehicle acceleration.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: August 11, 1992
    Assignee: Eaton Corporation
    Inventor: Erlen B. Walton
  • Patent number: 5129671
    Abstract: Selectively engagable auxiliary leaf springs (38) for vertically supporting a vehicle chassis (32) on an axle assembly (22) in parallel with main suspension springs (34). Forward and rear ends (38b, 38a) of the auxiliary leaf springs are pivotally attached to the vehicle chassis and the axle assembly, and pivotal movement of the forward ends (38b) is inhibited or prevented by engagement of actuator assemblies (56 or 100 or 170) to engage the auxiliary leaf springs. A control system automatically engages the actuator assemblies in response to load added to the vheicle and/or vehicle steering movement and/or rapid vehicle acceleration.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: July 14, 1992
    Assignee: Eaton Corporation
    Inventor: Erlen B. Walton