×

Crawler driving device and game device

  • US 20020137568A1
  • Filed: 04/08/2002
  • Published: 09/26/2002
  • Est. Priority Date: 02/23/2000
  • Status: Active Grant
First Claim
Patent Images

1. A crawler driving apparatus, wherein a crawler has a storage battery to self run by electric power of said storage battery, a charger is disposed at a stand-by position of said crawler to where said crawler can self run, and said storage battery is charged with electricity by said charger in a state that said crawler is adjacent to or not separated from a runway surface.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×