Abrading – Precision device or process - or with condition responsive... – Condition responsive control for sandblasting
Reexamination Certificate
1999-09-28
2001-06-19
Hail, III, Joseph J. (Department: 3723)
Abrading
Precision device or process - or with condition responsive...
Condition responsive control for sandblasting
Reexamination Certificate
active
06247997
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to abrasive cleaning devices that can remove and capture dirt and debris from a surface by using abrasive particles with mixture of high pressurized air and vacuum. More particularly, the invention relates to an abrasive-cleaning device utilizing a system having a central vacuum compressor with plurality of control panel units that can be placed in treatment stations to be used for unlimited number of users.
BACKGROUND OF THE INVENTION
Abrasive cleaning devices are well known as surfacing applicators to treat surfaces for cleaning, smoothing, etching and resurfacing a damaged area such as human skin. These devices operate on a high stream of a pressurized air or vacuum suction to carry abrasive particles to be impinged against the surface. The high pressures of abrasive particles removes dirt and debris from a surface and provides an extremely satisfactory cleaning means.
In spite of the advantages of these devices in prior art, there are some disadvantages and limitations that can not be delivered for the purpose of productivity. For example, only one operator at a time can use this device while using the applicator to treat a patient. The usage of the unit is entirely limited to a sole operator. In case of needing another operator for more productivity, additional unit must be purchased and that is not a cost-effective approach.
Another disadvantage of the prior art unit is that the vacuum compressor is built in with control panel and while the unit is operating, the compressor makes a loud noise and generates heat in the treatment room and it's very inconvenient. However, this invention overcomes the shortcomings of conventional units and provides a system that utilizes a central vacuum compressor with an option to expand the system and provide additional treatment stations for unlimited number of operators at very lower cost and achieve maximum productivity.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved abrasive cleaning system that utilizes a central vacuum compressor, at least one in-line filtration device and at least one control panel unit to be placed in a treatment station. Said compressor is placed in a separate room away from treatment stations to eliminate the compressor noise in treatment stations.
It is also an object of this invention to expand the system by adding two or more additional control panel units to the original system set up. The number of these additional control panel units depends upon the design layout of the system unit, which can be unlimited. Therefore by expanding the system unit, we can provide multi-treatment stations at very low cost to treat patients and to be productive.
In each treatment station, a control panel unit may be a wall mounted panel or a tabletop panel that includes a handpiece, a collection canister, a source canister, a vacuum adjustment knob and a control flow knob to adjust the flow of the abrasive particles. The in-line filtration device may also be included in this unit.
It is another object of this invention to provide in-line filtration device with this system to collectively capture particles and optionally be able to expand the filtration device with additional filters. It is preferable to have straight type fitting connections to the system to eliminate any loss of vacuum flow in 90 degrees angle and retain maximum vacuum source. However, the elbow connection fitting may be used in some system configurations for purpose of controlling the vacuum flow. Said in-line filtration device includes a least two proxy-filters connected at each end with a connecting part with a passage of flow between the two filters, two end caps with hose fittings connectors, and at least one translucent cover.
Further objects and advantages of this invention will become apparent from consideration of the drawings and description that follows.
REFERENCES:
patent: 4232487 (1980-11-01), Brown
patent: 4333277 (1982-06-01), Tasedan
patent: 4375740 (1983-03-01), Brown
patent: 4671022 (1987-06-01), Williams
patent: 5279075 (1994-01-01), Sage et al.
patent: 5545074 (1996-08-01), Jacobs
patent: 5971999 (1999-10-01), Naldoni
Hail III Joseph J.
Thomas David B.
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