Gas separation: apparatus – With inspection means – Transparent
Reexamination Certificate
1999-10-29
2001-09-04
Smith, Duane S. (Department: 1724)
Gas separation: apparatus
With inspection means
Transparent
C055S310000, C055S313000, C055S319000, C055S385100, C055S482000, C055SDIG001
Reexamination Certificate
active
06284026
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention herein relates to a filtering, water eliminating, and lubricating compressed air valve structure comprised of a compressed air valve installed between a conventional air compressor and a pneumatic tool. The present invention is capable of trapping free-floating particulate matter present in air and filtering our the water content to both clean and dry the air supplied into the said compressed air valve from the air compressor and then producing a mixture of the resulting air and lubricating oil to lubricate the components of a pneumatic tool and thereby enhance its mechanical operation. Furthermore, the compressed air valve is of the invention herein is also of reduced physical dimensions to facilitate installation and utilization.
2. Description of the Prior Art
Conventional compressed air valves installed between an air compressor and a pneumatic tool are typically comprised of two separate valve components, of which the structure of the water expelling valve component A, as indicated in
FIG. 1-A
and
FIG. 1-B
, is comprised of a lengthy cylindrically shaped condensate chamber A
2
having an inserted air inlet fitting A
1
, enabling the tubular top of the air inlet fitting A
1
to be ensleeved into the hollow T-shaped leakproof washer mount A
3
, wherein numerous minute holes are formed in the filter ring A
4
around the hollow tubular extent of the leakproof washer mount A
3
; then, a cross-shaped connector A
5
is installed to the opening of the condensate chamber A
2
that seals the interior of the chamber and, furthermore, the throats A
51
and A
52
inside the connector A
5
are of two different diameters, with the smaller throat A
52
at the bottom having a vertical through-hole A
521
in its side that is in continuity with the larger throat A
51
situated above; a horizontal through-hole A
522
is also drilled in the inner side of the smaller throat A
52
and does not interface with vertical through hole A
521
that extends into sealed region of the chamber A
2
. Threads are tapped along the inner walls of the larger throat A
51
of the connector A
5
. When external air is compressed by the air compressor and delivered to the water expelling valve A, the compressed air enters the air inlet fitting A
1
, travels through the horizontal through-holes A
522
along the inner sides of the smaller throat A
52
, and reaches the space of the surrounding condensate chamber A
2
. The compressed air in chamber A
2
enables the action of the numerous minute pin holes of the filter ring A
4
to collect any moisture contained and only allow a continuous flow of dry air through the through-holes A
521
into the larger throat A
51
at the top; as such, the said structure provides for the filtration of water content from the air delivered by the air compressor to supply dry air to and thereby maintain the normal operation and mechanical efficiency of the internal components comprising the pneumatic tool by preventing moisture-induced corrosion that results in abnormal operation or tool by preventing moisture-induced corrosion that results in abnormal operation or a deterioration of original mechanical precision.
The oil supply valve component B, as indicated in
FIG. 2-A
and
FIG. 2-B
, is comprised of a tubular connector B
1
inserted into an oil reservoir B
2
that is then capped by an internally threaded connector B
3
, of which a through-hole B
31
is formed in the internally threaded connector B
3
, enabling continuity with the hollow passage B
11
in the tubular connector B
1
, which is connected to a pneumatic tool; an oil injection screw B
21
is installed in the bottom end of the condensate chamber B
2
, thereby providing for pressure relief and oil volume replenishment; when a flow of air is delivered to the hollow passage B
11
in the tubular connector B
1
of the oil supply valve component B, the oil volume is affected by the air flow moving past the through-hole B
31
formed in the internally threaded connector B
3
, which results in the mixing of the lubricating oil in the air flow, followed by delivery of the mixture to the internal components of the pneumatic tool, enabling the internal components of the pneumatic tool to be adequately lubricated and utilized by the operator.
However, the said water expelling valve component A and oil supply valve component B are only capable of single practical function and, furthermore, when the air delivered by the air compressor contains free-floating particulates, the air inlet fitting A
1
and the hollow passage B
1
, are easily clogged, which adversely affects normal operation and, therefore, must be frequently cleaned and inspected; additionally, inconvenient and troublesome utilization results because the through-hole B
31
of the said oil supply valve component B cannot be adjusted to vary the oil volume.
In view of the said shortcomings, the inventor of the invention herein developed the filtering, water eliminating, and lubricating compressed air valve structure of the present invention and subsequently submitted the application for patent rights.
SUMMARY OF THE INVENTION
The primary objective of the invention herein is to provide a filtering, water eliminating, and lubricating compressed air valve structure installed between a conventional air compressor and a pneumatic tool such that when air is delivered to the said compressed air valve, free-floating particulate matter present in the air is screened first and then water is filtered out only allows dry air goes through, which is then mixed with lubricating oil to lubricate the components of a pneumatic tool and enhance its operation; furthermore, the compressed air valve of the present invention is also of reduced physical dimensions to facilitate actual installation and utilization.
To enable a further understanding of the structural innovations and operation of the present invention, the brief description of the drawings below are followed by the detailed description of the preferred embodiments.
REFERENCES:
patent: 1652309 (1927-12-01), Kingdon
patent: 2010456 (1935-08-01), Jones
patent: 2127746 (1938-08-01), Logan
patent: 2572311 (1951-10-01), Burd
patent: 2962119 (1960-11-01), White
patent: 3130741 (1964-04-01), Vetere
patent: 3665684 (1972-05-01), White
patent: 4400187 (1983-08-01), Lane
patent: 4464186 (1984-08-01), Mann
patent: 4810272 (1989-03-01), Overby
patent: 5522910 (1996-06-01), Fogal, Sr.
patent: 5637125 (1997-06-01), Amada
patent: 6093227 (2000-07-01), Benasutti
Rabin & Champagne, P.C.
Smith Duane S.
Ting Chih-Ming
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