Measuring and testing – With fluid pressure – Leakage
Reexamination Certificate
2001-07-20
2003-05-20
Kwok, Helen (Department: 2856)
Measuring and testing
With fluid pressure
Leakage
Reexamination Certificate
active
06564613
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to line leak testing devices and more particularly pertains to a new air conditioner line leak tester for testing for any leaks in an air conditioner system without risking loss of coolant into the atmosphere.
2. Description of the Prior Art
The use of line leak testing devices is known in the prior art. More specifically, line leak testing devices heretofore devised and utilized are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which have been developed for the fulfillment of countless objectives and requirements.
Known prior art includes U.S. Pat. No. 5,419,177; U.S. Pat. No. 4,110,998; U.S. Pat. No. 5,345,774; U.S. Pat. No. 5,226,300; U.S. Pat. No. 4,923,806; and U.S. Pat. No. 100,193.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new air conditioner line leak tester. The inventive device includes a device for removably attaching to a low pressure side and a high pressure side of an air conditioner. The device comprises a housing has a top wall having first and second air pressure gauges mounted on and extending into the housing. A first tubular member is fluidly coupled to the first air pressure gauge and has a free end adapted for removably coupling the lower pressure side of the air conditioner. A second tubular member is fluidly coupled to the second air pressure gauge and a free end adapted for removably coupling the higher pressure side of the air conditioner. A one way valve is mounted on the housing. The one way valve is coupled to the first and second tubular members such that air entering the one way valve may enter the first and second tubular members. A supply conduit is removably coupled to the one way valve for supplying pressured air to the first and second tubular members. Air may flow under pressure through the one way valve and into the first and second tubular members such that the changes in air pressure may be measured by the first and second air pressure gauges.
In these respects, the air conditioner line leak tester according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of testing for any leaks in an air conditioner system without risking loss of coolant into the atmosphere.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of line leak testing devices now present in the prior art, the present invention provides a new air conditioner line leak tester construction wherein the same can be utilized for testing for any leaks in an air conditioner system without risking loss of coolant into the atmosphere.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new air conditioner line leak tester apparatus and method which has many of the advantages of the line leak testing devices mentioned heretofore and many novel features that result in a new air conditioner line leak tester which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art line leak testing devices, either alone or in any combination thereof.
To attain this, the present invention generally comprises a device for removably attaching to a low pressure side and a high pressure side of an air conditioner. The device comprises a housing has a top wall having first and second air pressure gauges mounted on and extending into the housing. A first tubular member is fluidly coupled to the first air pressure gauge and has a free end adapted for removably coupling the lower pressure side of the air conditioner. A second tubular member is fluidly coupled to the second air pressure gauge and a free end adapted for removably coupling the higher pressure side of the air conditioner. A one way valve is mounted on the housing. The one way valve is coupled to the first and second tubular members such that air entering the one way valve may enter the first and second tubular members. A supply conduit is removably coupled to the one way valve for supplying pressured air to the first and second tubular members. Air may flow under pressure through the one way valve and into the first and second tubular members such that the changes in air pressure may be measured by the first and second air pressure gauges.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
It is therefore an object of the present invention to provide a new air conditioner line leak tester apparatus and method which has many of the advantages of the line leak testing devices mentioned heretofore and many novel features that result in a new air conditioner line leak tester which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art line leak testing devices, either alone or in any combination thereof.
It is another object of the present invention to provide a new air conditioner line leak tester which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new air conditioner line leak tester which is of a durable and reliable construction.
An even further object of the present invention is to provide a new air conditioner line leak tester which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such air conditioner line leak tester economically available to the buying public.
Still yet another object of the present invention is to provide a new air conditioner line leak tester which provides in the apparatuses and methods of the prior art some of the advantages thereof, while simultaneously overcoming some of the disadvantages normally associated therewith.
Still another object of the present invention is to provide a new air conditioner line leak tester for testin
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