Coil Spring Between Lever And Vehicle Part Patents (Class 267/240)
  • Patent number: 6672606
    Abstract: An improved suspension system is disclosed for a personal mobility vehicle comprising an arm assembly pivotably mounted to a fame section. A wheel assembly is connected to the arm assembly. A spring is interposed between the arm assembly and the second frame section for resiliently suspending the wheel assembly relative to the frame section. In one example of the invention, the frame section comprises a rigid frame section of the personal mobility vehicle. In another example of the invention, the frame section comprises a resilient leaf spring resiliently suspending the assembly of the personal mobility vehicle. In another example of the invention, a resilient coil spring interposed between the arm assembly the resilient leaf spring for providing a multiple resilient suspension for the wheel assembly.
    Type: Grant
    Filed: October 4, 2001
    Date of Patent: January 6, 2004
    Assignee: Electric Mobility Corporation
    Inventors: Edward Joseph Dwyer, Jr., Stephen John Jarema
  • Publication number: 20030141642
    Abstract: An elastic wheel comprising a disk (1), a rim (3) supporting a tire (20), a pair of guides (4) annularly fixed on the inner periphery surface of the rim (3), a pair of walls (5) annularly fixed in two side areas along the wheel axial direction on the outer periphery surface of a base rim (2) disposed on the disk (1) or on the outer periphery surface of the disk (1), and rubber elastic bodies (6) each annularly interposed between the side faces of the guides (4) and the side faces of the walls (5), wherein at least one belt (8) is annularly arranged on each rubber elastic body (6). By virtue of the shear deformation of the installed rubber elastic bodies (6), it is possible to absorb vibration, particularly to improve a riding quality associated with a low input, and to improve a vibration prevention performance, a sound insulation performance and a steering stability. As for sound insulation performance, the elastic wheel is extremely effective for sound insulation in high frequency ranges of 100 Hz or more.
    Type: Application
    Filed: January 2, 2003
    Publication date: July 31, 2003
    Inventors: Tatsuro Uchida, Hirohumi Kikuchi, Katsumi Tashiro, Takeshi Suga