Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – Flexible hose terminal with receiver engaging means
Reexamination Certificate
2000-03-24
2001-02-13
Jacyna, J. Casimer (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
Filling means with receiver or receiver coacting means
Flexible hose terminal with receiver engaging means
C141S383000
Reexamination Certificate
active
06186197
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The instant invention relates generally to the field of pressurized fluid systems and more specifically it relates to an apparatus for charging a pressurized system. The purpose of the charging apparatus is to provide the technician with a simple method of injecting a predetermined amount of lubricant into a pressurized system.
2. Description of the Prior Art
Numerous pressurized fluid systems have been provided in prior art that are adapted to operate optimally within a certain pressure range. If the internal pressure falls below this range, the system needs to be recharged with an appropriate lubricant. While these units may be suitable for the particular purpose to which they address, they would not be as suitable for the purposes of the present invention as heretofore described.
There does not presently exist a cost effective way to accomplish the task of inserting a predetermined amount of lubricant into a pressurized system. Added to this, is the fact that when a technician arrives on site they are faced with a myriad number of systems with service connection access ranging from the accessible to the acrobatic and often cramped working conditions.
Some systems contain a combination of fluids. For example, air conditioning and refrigerant (the primary fluid) in combination with a lubricating oil (the secondary fluid) for the compressor and other critical components. The lubricating oil is generally present in fairly fluid. The quantities, usually less than 5% of the total fluid. The present invention provides for the introduction of these secondary fluids into systems charged with the primary fluids.
SUMMARY OF THE INVENTION
The preferred embodiment of the present invention includes an injection device with a receptacle portion for receiving a disposable or reusable lubricant canister and a connector assembly for attaching the lubricant canister to the pressurized system. It is a further aim of the present invention not to limit the mechanical means of lubricant delivery just to hand pressure, but to provide other embodiments using various types of hand tools and structures to accomplish the delivery of the lubricant to the pressurized system.
A primary object of the present invention is to provide an apparatus for charging a pressurized system that will overcome the shortcomings of the prior art devices.
Another object is to provide an apparatus for charging a pressurized system that will allow a technician to inject a predetermined amount of lubricant into the pressurized system.
It is yet a further object of the invention to provide a method and apparatus for charging a pressurized air conditioning/refrigeration line with a lubricant and/or dye from a closed, non-pressurized charging cartridge containing a predetermined amount of such lubricant and/or dye.
An additional object is to provide an apparatus for charging a pressurized system which can be readily carried to a site, be easily operated, and can deliver a measured amount of lubricant into the pressurized system.
A further object is to provide an apparatus for charging a pressurized system that is simple and easy to use.
A still further object is to provide an apparatus for charging a pressurized system that is economical in cost to manufacture.
Further objects of the invention will appear as the description proceeds.
To the accomplishment of the above and related objects, this invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that changes may be made in the specific construction illustrated and described within the scope of the appended claims.
REFERENCES:
patent: 1926399 (1933-09-01), Nielsen
patent: 4197884 (1980-04-01), Maran
patent: 4467620 (1984-08-01), Bradley et al.
patent: 4948016 (1990-08-01), Summons et al.
patent: 5027605 (1991-07-01), Hardesty
patent: 5673722 (1997-10-01), Brass
Bell Boyd & Lloyd LLC
Jacyna J. Casimer
UView Ultraviolet Systems, Inc.
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