×

Vertically stored dockboard

  • US 4,776,052 A
  • Filed: 06/22/1987
  • Issued: 10/11/1988
  • Est. Priority Date: 06/22/1987
  • Status: Expired due to Fees
First Claim
Patent Images

1. A vertically stored dockboard, comprising a frame to be secured to a loading dock, a ramp having an end hinged to the frame and having a generally vertical storage position and a generally horizontal operating position, operating means for moving the ramp from the horizontal to the storage position, and a locking mechanism for locking the ramp in the vertical storage position, said locking mechanism comprising a toggle assembly composed of a first toggle member pivotally connected to the undersurface of the ramp at a first pivot, a second toggle member pivotally connected to the frame at a second pivot, said first and second toggle members being connected together at a third pivot, said toggle assembly being constructed and arranged so that said third pivot is at an over-center position located in a direction toward the undersurface of the ramp from a line passing through the axes of said first and second pivots when said ramp is in the vertical storage position to thereby lock said ramp in said storage position.

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