公开(公告)号：US3608431A

公开(公告)日：1971-09-28

申请号：US3608431D

申请日：1969-07-14

申请人： LUMMUS INDUSTRIES

发明人： PEASE WILLIAM C

IPC分类号： F15B11/064 ,  F15B21/08 ,  F15B11/15

CPC分类号： F15B21/08 ,  F15B11/064 ,  F15B2211/20576 ,  F15B2211/30565 ,  F15B2211/327 ,  F15B2211/40515 ,  F15B2211/426 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/7053 ,  F15B2211/7725 ,  F15B2211/865

摘要： A SYSTEM FOR OPERATING FLUID PRESSURE CYLINDERS, PARTICULARLY CYLINDERS POWERED BY COMPRESSIBLE GASES IN WHICH THE CYLINDER IS ARRANGED VERTICALLY SO THAT ON ITS WORKING STROKE THE RAM OF THE CYLINDER MOVES DOWNWARDLY. A CONTROL SYSTEM FOR THE CYLINDER INTERCONNECTS THE ENDS OF THE CYLINDER ON TE DOWNWARD STROKE OF THE RAM SO THAT THE FLUID UNDER PRESSURE IN THE LOWER END AND WHICH HAS BEEN USED TO RAISE THE RAM FLOWS INTO THE UPPER END SO THAT THE RAM FALLS DOWNWARDLY BY GRAVITY. BY THUS INTERCONNECTING THE ENDS OF THE CYLINDER AT THE TIME INDICATED THE RAM MOVES DOWN, ON ITS WORKING STROKE, WITHOUT BEING CONNECTED TO THE SOURCE OF GAS UNDER PRESSURE. FURTHER DETAILS INCLUDE MEANS TO ADMIT GAS UNDER PRESSURE TO THE UPPER END OF THE CYLINDER WHEN THE INTERCONNECTING PROCEDURE IS INSUFFICIENT TO CAUSE THE RAM TO COMPLETE ITS WORKING STROKE.