Security bar assembly
AssigneeRavco Innovations, Inc.
InventorsMoshe Cohen-Ravid, Lon W. McIlwraith
Life of this patent
Estimating the term…
Abstract
A security bar assembly has a plurality of bars that extend across an opening and have ends joined to drive chains to provide an easily removable assembly. The bars extend between two channels positioned on opposite faces of the opening, and are slidable within the channels. The ends of the bars are retained in the channels and the ends have connections to chain links in opposing drive chains which are spaced apart a predetermined number of links to keep the bars a predetermined distance apart. A drive mechanism is provided for moving the drive chains to slide the bars in the channels and a storage area adjacent the opening associated with the channels to retain the bars when they are not in place over the opening.
Claims40
A security bar assembly for an opening comprising:
- a plurality of bars extending between two channels, the two channels positioned one on opposite faces of the opening, the bars slidable within the channels and having ends of the bars retained in the channels over the opening;
- bar drive chains, having adjoining chain links, guided within the two channels;
- each of the bars having a connection at each end to engage in chain links in the drive chains, the engaged chain links spaced apart a predetermined number of chain links in each of the drive chains, and retaining the bars a predetermined distance apart;
- a drive mechanism for moving the drive chains at substantially the same speed to slide the bars in the channels over the opening, and
- a storage area adjacent the opening associated with the channels to retain the bars when they are not in place over the opening.
A method of forming a security bar assembly in an opening including a plurality of security bars, the bars having retained ends extending between two channels on opposing faces of the opening and slidable therein, comprising the steps of:
- moving drive chains in guides within the two channels, the drive chains having adjoining chain links;
- feeding opposing retained ends of a first bar to engage in first chain links of the drive chains so the first bar slides across the opening;
- feeding a second bar to engage in second chain links spaced a predetermined number of chain links from the first chain links;
- and
- continuing moving the drive chains and engaging further bars in further chain links spaced the predetermined number of chain links apart until the security bar assembly covers the opening.
A method of forming a security bar assembly in an opening including a plurality of security bars having retained ends engaged in chain links of drive chains guided in two channels on opposing faces of the opening and slidable therein, comprising the steps of:
- moving the drive chains in guides within the two channels until a first bar having ends engaged in first chain links of the drive chains slides across the opening;
- continuing moving the drive chains in the guides until a second bar having ends engaged in second chain links of the drive chains slides across the opening;
- and
- further moving the drive chains with further bars engaged in further chain links until the security bar assembly covers the opening.
Dependencies are inferred from the claim text.