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Climbing vehicle

  • US 5,228,880 A
  • Filed: 07/23/1992
  • Issued: 07/20/1993
  • Est. Priority Date: 07/23/1992
  • Status: Expired due to Fees
First Claim
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1. A drive mechanism connecting a drive shaft and a driven wheel having an axis of rotation, said drive mechanism including:

  • a first arm affixed to said drive shaft for rotation therewith,a second arm affixed to said wheel at said axis for rotation therewith,a pivotal connection between said first and second arms,means biasing said arms into an overlapping relationship in which said drive shaft is aligned with said driven wheel axis so that said wheel rotates about the axis of said drive shaft,first stop means engaging said arms to limit rotation of said arms about their pivotal connection relative to each other in the direction of rotation of said wheel axis, andsecond stop means engaging said arms to limit rotation of said arms away from each other beyond a fully extended position.

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