Patent ID: 8021546
Filing Date: 2011-09-20
Classification: B07B

Abstract:
1. A system for retaining a filtering screen in a vibratory machine, comprising: a screen bed removably mounted in said vibratory machine; a screen cloth bonded to a screen frame positioned on said screen bed; a first hook mounted over a pneumatic cylinder disposed with said screen bed; a second hook mounted with said first hook over said pneumatic cylinder; and a cylinder bracket disposed on said pneumatic cylinder, wherein said cylinder bracket comprising a cylinder holder support member, wherein said pneumatic cylinder is configured to move said first hook between a downward position clamping said screen frame with said screen bed, and an upward position not resisting movement of said screen frame away from said screen bed; wherein said screen bed comprises a first support member that supports said screen frame, and wherein said first hook is positioned in a slot in said first support member; wherein said slot is configured to prevent the upward movement of said first hook beyond a predetermined distance; wherein said screen frame comprises a first frame member having a ledge, and wherein said first hook is configured to contact said ledge and move said screen frame downward when moving from said upward position to said downward position; wherein said screen frame further comprising a second frame member having a ledge; wherein said second hook is configured to contact said second frame member ledge and move said screen frame downward when said first hook moves from said upward position to said downward position; wherein said screen bed further comprises a second support member that supports said screen frame, and wherein said second hook is positioned in a slot in said second support member; wherein said second support member slot is configured to prevent the upward movement of said second hook beyond said predetermined distance; and wherein said screen bed first support member is disposed in a first slot in said cylinder holder support member, and wherein said screen bed second support member is disposed in a second slot in said cylinder holder support member.