Abrading – Machine – Sandblast
Patent
1995-01-18
1996-12-31
Rose, Robert A.
Abrading
Machine
Sandblast
451 87, 180164, B24C 306
Patent
active
055889000
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a surface treating device capable of removing foreign matter, such as an old coating or rust, stuck onto the surface of an object, or of roughening the surface of an object, by ejecting a high pressure fluid such as water, or a high pressure fluid mixed with abrasive grains, toward the surface of the object.
The present invention also relates to a surface treating device capable of removing foreign matter, such as an old coating or rust, stuck onto the surface of an object, or of roughening the surface of an object, by ejecting a high pressure fluid such as water, or a high pressure fluid mixed with abrasive grains, toward the surface of the object, while suction-adhering to the surface of the object by the pressure of an ambient fluid such as air or water and moving along the surface.
BACKGROUND ART
So far, ultrahigh pressure water jet equipment and sand blasting equipment have been put to practical use as surface treating devices which eject a high pressure fluid such as water, or a high pressure fluid mixed with abrasive grains, toward the surface of an object, such as an oil reservoir tank or a ship hull, thereby removing foreign matter, such as an old coating or rust, stuck onto the surface of the object; or roughening the surface of the object with the abrasive grains ejected, to make the surface prepared for coating; or cleaning the surface of the object to carry out non-destructive testing.
The devices disclosed in the specification and drawings of U.S. Pat. Nos. 4,095,378 and 4,934,475 are typical examples of a surface treating device which ejects a high pressure fluid such as water, or a high pressure fluid mixed with abrasive grains, toward the surface of an object while suction-adhering to the surface of the object by the pressure of an ambient fluid such as air or water and moving along the surface, thereby removing foreign matter, such as an old coating or rust, stuck onto the surface of the object; or roughening the surface of the object with the abrasive grains ejected, to make the surface prepared for coating; or cleaning the surface of the object to carry out non-destructive testing.
Such a device capable of suction-adhering to the surface of an object and moving along it has a case, a surface sealing means mounted on the case and defining a pressure reduction space in cooperation with the case and the surface, and a pressure reducing means for discharging a fluid from the pressure reduction space to decrease the pressure inside the pressure reduction space. The device can be moved by wheels as moving means, other suitable element such as an endless track, or other suitable moving means such as a vibration generating means. Upon actuation of the pressure reducing means, fluid inside the pressure reduction space is discharged to the outside. Owing to the difference in fluid pressure between the inside and outside of the pressure reduction space, the fluid pressure acts on the case, and is then transmitted to the surface of an object via the wheels or other receiver member. Under this fluid pressure, the device is caused to suction-adhere to the surface of the object. By driving the moving means in this state of suction-adhesion, the device moves along the surface of the object. On this device is mounted working unit such as a surface treating material ejecting means for ejecting a surface treating material, such as high pressure water or abrasive grains, toward the surface of the object. In the present specification, the surface treating material refers to a material, such as a high pressure fluid including high pressure water or compressed air, abrasive grains, or the high pressure fluid mixed with abrasive grains, which can treat the surface of an object when ejected from a nozzle to the surface.
In conventional ultrahigh pressure water jet equipment, about 20 liters/minute of water pressurized to an ultrahigh pressure of about 2,000 to 2,500 kilograms/cm.sup.2 is ejected from a nozzle with a diameter of 0.1 to 0.5 mm. Furthermore, this nozzl
REFERENCES:
patent: 3916568 (1975-11-01), Rose et al.
patent: 4045915 (1977-09-01), Gilbert et al.
patent: 4934475 (1990-06-01), Urakami
patent: 5191740 (1993-03-01), Rose
Honda Giken Kogyo Kabushiki Kaisha
Rose Robert A.
Urakami Research & Development
LandOfFree
Surface treating device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface treating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface treating device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1138299