Mezzanine safety gate
First Claim
1. A mezzanine safety gate including posts adapted to be mounted at the edge of a mezzanine, a gate between said posts, normally closed and locked, a cage mounted on said posts for vertical movement, and means responsive to the location of said cage during vertical downward movement to unlock said gate.
1 Assignment
0 Petitions
Accused Products
Abstract
A mezzanine safety gate for a mezzanine staging area maintains a clear aisle along the edge of the mezzanine and is supported at the edge by two minimal depth posts. Swing gates are provided between the posts at the edge. The posts include a roller guide track supporting a three sided cage or railing adapted to enclose the staging area when down. They also support two vertically spaced guide tubes for vertically elongated counterweights connected to the cage by cable pulleys at the top. The swing gates include guide tubes aligned with the counterweight guide tubes when closed. Spring loaded gate hinges are offset from the gate guide tubes. When the counterweights enter the gate guide tubes the gates are locked shut. Linear cams on the cage swing the gate open after being unlocked.
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Citations
22 Claims
- 1. A mezzanine safety gate including posts adapted to be mounted at the edge of a mezzanine, a gate between said posts, normally closed and locked, a cage mounted on said posts for vertical movement, and means responsive to the location of said cage during vertical downward movement to unlock said gate.
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11. A mezzanine safety gate including posts mounted at the edge of a mezzanine, a gate between said posts, a cage mounted on said posts for vertical movement, and means responsive to vertical upward movement of said cage first to close said gate and then to lock the gate.
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12. A mezzanine safety gate including posts mounted at the edge of a mezzanine, a gate between said posts, a cage mounted on said posts for vertical movement, and means responsive to vertical downward movement of said cage first to unlock said gate, and then to open said gate.
- 13. A mezzanine safety gate comprising posts adapted to be positioned adjacent the mezzanine edge, a gate extending between said posts at the edge, a cage railing supported by said posts and adapted to be raised and lowered, and means responsive to a range of movement of said cage railing approaching and leaving the mezzanine to open and close said gate respectively.
Specification