×

Abdominal exerciser device

  • US 6,309,331 B1
  • Filed: 02/11/2000
  • Issued: 10/30/2001
  • Est. Priority Date: 02/12/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. An abdominal exerciser device comprising a self-standing casing member with an essentially upwardly oriented cavity, at least three ball bearing members secured into said cavity of said casing, and a ball removably engaging said cavity and rollably engaging said bearing members, said casing member includes a top cover member having an essentially circular opening of a diameter slightly larger than the diameter of said ball and engaged by said ball.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×