公开(公告)号：US3671299A

公开(公告)日：1972-06-20

申请号：US3671299D

申请日：1970-02-26

Applicant: JACKSON HERMAN BARNETT JR

Inventor： BARNETT JACKSON HERMAN JR

IPC: B05D1/18 ,  B05D3/04 ,  B05D7/06 ,  B05D7/22 ,  B44D1/26 ,  B05C3/02

CPC classification number: B05D7/06 ,  B05D1/18 ,  B05D3/0493 ,  B05D7/22 ,  Y10S428/907 ,  Y10T428/662

Abstract: METHOD FOR IMPREGNATING WOOD WITH LIQUID TREATING SOLUTIONS SUCH AS PRESERVATIVES, FIRE RETARDANTS, OR THE LIKE WHEREIN THE WOOD IS IMMERSED IN A CONFINED PRESSURE VESSEL, AND TREATING LIQUID IS PUMPED INTO THE VESSEL IN DIRECT PRESSURE CONTACT WITH THE WOOD AT A RATE OF FLOW SUFFICIENT WITHIN NO MORE THAN TEN MINUTES TO BUILD UP A PRESSURE THEREIN IN EXCESS OF A PREDETERMINED PRESSURE WITHIN THE RANGE FROM 20 TO 700 P.S.I. GAUGE. THE PUMPING IS EFFECTED WITHOUT CAUSING PULSATIONS IN EXCESS OF 5.0 P.S.I. GAUGE PEAK TO PEAK WITHIN THE PRESSURE VESSEL. EXCESS TREATING LIQUID IS BYPASSED AND RECIRCULATED AT A PREDETERMINED PRESSURE.

公开(公告)号：US3677805A

公开(公告)日：1972-07-18

申请号：US3677805D

申请日：1970-03-04

Applicant: JACKSON HERMAN BARNETT JR

Inventor： BARNETT JACKSON HERMAN JR

IPC: B05D1/18 ,  B05D3/04 ,  B05D7/06 ,  B05D7/22 ,  B44D1/26 ,  B05C3/05

CPC classification number: B05D1/18 ,  B05D3/0493 ,  B05D7/06 ,  B05D7/22

Abstract: METHOD FOR IMPREGNATING WOOD WITH A TREATING LIQUID SUCH AS A PRESERVATIVE, A FIRE RETARDANT OR THE LIKE, WHEREIN THE WOOD IS IMMERSED IN THE TREATING LIQUID INSIDE A PRESSURE VESSEL. THE PRESSURE IN THE VESSEL IS BROUGHT UP TO OPERATING PRESSURE WITHIN A SHORT TIME, ON THE ORDER OF TEN MINUTES OR LESS, AND THE CONTENTS OF THE VESSEL ARE THEN SUBJECTED TO THE ACTION OF A PULSATING PUMP WHICH PROVIDES SINUSODIAL PRESSURE PULSES WITHIN THE VESSEL HAVING A POSITIVE PEAK TO NEGATIVE PEAK AMPLITUDE OF FROM 1 TO 1500 POUNDS PER SQUARE INCH. THESE PRESSURE PLUSE ARE MODULATED BY THE ACTION OF A PRESSURE RELIEF MEANS ASSOCIATED WITH THE PRESSURE VESSEL, WHEREBY THE RESULTANT PRESSURE ACTING ON THE WOOD BEING IMPREGNATED CONSISTS OF A SERIES OF PRESSURE PULSES MODULATED IN AMPLITUDE AT A RELATIVELY SLOW RATE. THE TREATING LIQUID WHICH IS DISCHARGED THROUGH THE PRESSURE RELIEF MEANS IN A PULSATING FASHION IS THEN RECYCLED BACK TO THE PULSATING PUMP SO THAT THERE IS A SUBSTANTIALLY CONTINUOUS FLOW OF TREATING LIQUID FROM THE PUMP, THROUGH THE PRESSURE VESSEL, THROUGH THE PRESSURE RELIEF MEANS, AND FINALLY BACK INTO THE INLET END OF THE PUMP.

D R A W I N G

公开(公告)号：US3532325A

公开(公告)日：1970-10-06

申请号：US3532325D

申请日：1968-07-23

Applicant: JACKSON HERMAN BARNETT JR

Inventor： BARNETT JACKSON HERMAN JR

IPC: B01J3/08 ,  B27K3/10 ,  B01F11/02

CPC classification number: B01J3/08 ,  B27K3/10