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Suspension for tracked vehicles

  • US 7,533,750 B2
  • Filed: 09/28/2006
  • Issued: 05/19/2009
  • Est. Priority Date: 09/28/2005
  • Status: Expired due to Fees
First Claim
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1. A snowmobile suspension mountable to the chassis of a snowmobile and about which an endless track is carried, the suspension comprising:

  • a slide rail for engagement with a lower portion of the endless track;

    a downwardly angled rear suspension arm having an upper end pivotally connected to the snowmobile chassis and a lower end pivotally connected to the slide rail;

    a shock absorber coupled at one end to the snowmobile chassis and at another end to the slide rail;

    a coil spring secured around at least a portion of said shock absorber; and

    an overload spring which forces the slide rail away from the chassis, wherein an overload spring force is transferred to the rear suspension arm at a location between the upper end and the lower end.

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