Patents Represented by Law Firm Renner, Kenner, Grevie, Bobak, Taylor & Weber
  • Patent number: 5295909
    Abstract: A compact torque limiting clutch provides spring cup bolt assemblies for interengaging a pressure plate and input flange on opposite sides of a friction flange of an output hub. The spring cup assemblies include bolts employed for securing the clutch elements together, such bolts being restricted from rotating during the assembly process by engagement with noncircular apertures passing through the retainer plate. The torque limiting clutch is of a pancake design, contained between axially displaced planar surfaces defined by an input flange on one side and a pressure plate on the other. In another embodiment of the invention, a keeper plate is coaxially secured to an output hub, with a friction disc fixedly secured therebetween. An input drive flange is rotatably mounted on the keeper plate. A separator disc extends the full diameter of the clutch assembly and has cup-shaped shields extending therefrom, serving as seals and heat dissipating members.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: March 22, 1994
    Assignee: Power Transmission Technology, Inc.
    Inventor: David C. Heidenreich