Patent EA-004388-B1 (EA)
Title: Security bar transfer mechanism assembly
Inventor: COHEN-RAVID MOSHE
IPC: E06B9/06
Filed: 2001-03-13
Abstract: 1. A security bar assembly comprising: a plurality of security bars driven by a bar drive chain; and a transfer mechanism comprising a cam disk having a recess adapted for feeding a bar end on to the drive chain. 2. The security bar assembly of claim 1, wherein the cam disk is attached to a sprocket, the sprocket engages the bar drive chain and a bar end engages the bar drive chain when the bar is fed onto the bar drive chain. 3. A transfer mechanism for a security bar assembly, wherein the security bar assembly comprises security bars driven by a bar drive chain, wherein the transfer mechanism comprises side plates on the bar drive chain, and the side plates are adapted to engage the security bars. 4. The transfer mechanism of claim 3, wherein the side plates have an external convex arcuate conformation for engaging a side pin on the security bars, and wherein periodic side plates are provided with a recess adapted to accommodate the side pins on the security bars to admit the security bars to engagement with the drive chain. 5. A transfer mechanism for a security bar assembly, wherein the security bar assembly comprises security bars driven by a bar drive chain and a storage drive chain, wherein the transfer mechanism comprises a transfer arm for moving bars between the bar drive chain and the storage drive chain. 6. The transfer mechanism of claim 5 further comprising a cam wheel operably linked to the transfer arm to actuate the transfer arm. 7. The transfer mechanism of claim 6, further comprising a lever arm and a lifting arm, wherein the lever arm and the lifting arm are driven by engagement with the cam wheel, and wherein the transfer arm is operably connected to the lever arm and the lifting arm. 8. The transfer mechanism of claim 7, wherein the transfer mechanism is operably connected to the drive chain, so that the transfer mechanism is driven with the drive chain. 9. The transfer mechanism of claim 5, wherein the transfer arm is provided with a transfer arm pin and the security bars are provided with a feed slot for engaging the transfer arm pin. 10. A security bar assembly for an opening comprising: a plurality of security bars driven by a bar drive chain and a storage drive chain; and a transfer mechanism comprising a transfer arm for moving bars between the bar drive chain and the storage drive chain. 11. The security bar assembly of claim 10 wherein the transfer mechanism further comprises a transfer arm pin provided on the transfer arm to engage a bar end to transfer the bar end from the bar drive chain to the storage drive chain. 12. The security bar assembly of claim 10 wherein the transfer mechanism further comprises a cam wheel operably linked to the transfer arm to actuate the transfer arm. 13. The security bar assembly of claim 12 wherein the transfer mechanism further comprises a lever arm and a lifting arm, wherein the lever arm and the lifting arm are driven by engagement with the cam wheel, and wherein the transfer arm is operably connected to the lever arm and the lifting arm. 14. The security bar assembly of claim 13 wherein the transfer mechanism further comprises: a lever arm pin provided on the lever arm and accommodated in an outer groove of the cam wheel; a lifting arm pin provided on the lifting arm and accommodated in an inner groove of the cam wheel; and an actuating pin provided on the transfer arm and accommodated in a lifting arm groove of the cam wheel wherein, the rotation of the cam wheel moves the lever arm, the lifting arm and the transfer arm. 15. The security bar assembly of claim 14 wherein: the lever arm may be pivotably connected to a back plate and pivotably connected to the transfer arm; and the lifting arm may be pivotably connected to the back plate. 16. The security bar assembly of claim 12, wherein the transfer mechanism is operably connected to the bar drive chain and storage drive chain, so that the transfer mechanism is driven with the bar drive chain and storage drive chain. 17. The security bar assembly of claim 16 wherein the transfer mechanism further comprises: a drive wheel gear to drive the cam wheel; and a transfer gear to drive the drive wheel gear. 18. The security bar assembly of claim 17 wherein: the cam wheel may be adapted to drive the storage drive chain; and the drive wheel gear may be adapted to drive the bar drive chain. 19. The security bar assembly of claim 10, wherein the transfer arm is provided with a transfer arm pin and the security bars are provided with a feed slot for engaging the transfer arm pin. 20. A security bar assembly for an opening comprising: a plurality of security bars driven by a bar drive chain; and a transfer mechanism comprising side plates on the bar drive chain, wherein the side plates are adapted to engage the security bars. 21. The security bar assembly of claim 20 wherein the bar drive chain is comprised of connected chain links, and the side plates form the connection between the chain links. 22. The security bar assembly of claim 20, wherein the side plates have an external convex arcuate conformation for engaging a side pin on the security bars, and wherein periodic side plates are provided with a recess adapted to accommodate a side pin on a security bar to admit the security bar to engagement with the drive chain.