Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
1998-10-08
2001-02-27
Kamen, Noah P. (Department: 3747)
Pumps
Motor driven
Electric or magnetic motor
C417S423150
Reexamination Certificate
active
06193479
ABSTRACT:
FIELD OF THE INVENTION
The present invention concerns pumps, in particular storage tank type motor driven pumps also known as autoclaves.
BACKGROUND OF THE INVENTION
Certain types of pumps usually have a motor driven pump, which is connected to the storage tank by tubes and connections. This however makes the unit rather complex, bulky and costly.
SUMMARY AND OBJECTS OF THE INVENTION
The primary object of the present invention is to provide a pump with a storage tank which is simpler and less costly to make thanks to a new particular device and combination of components and furthermore the elimination of tubes and connections between the pump and tank.
Another object of the invention is to make a more compact pump-autoclave unit where the electric motor is cooled by the intake liquid and directed to the tank where the multistage centrifugal type pump operates: the layout being exactly opposite to the normal one used. It intakes from the sealed section and delivers the liquid to the tank creating a pressure; the fluid then being drawn off from the tank for use.
The advantages of a layout such as this are numerous. Foremost, the suction, which takes place from the sealed section, helps to shorten the distance the liquid has to travel in this phase.
Secondly, the pump section is always immersed in the liquid in the tank so it is permanently drawing, thus avoiding any inconveniences due to operating without load.
Also very beneficial and that which forms another innovative characteristic, is the suction placed in line with the output towards the point of use, enabling a handy and fast installation of the unit even in the area under the sink. The suitability of the pump for domestic use is also favored by the insulating effect the pump being immersed in water has.
The use of a centrifugal pump instead of self-priming pumps gives the equipment remarkable energy savings compared to normal consumption.
The pump with storage tank or autoclave proposed here is shown in the rough diagram and given as an example in the only FIGURE in the enclosed drawing and which will be described in more detail below.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawing and descriptive matter in which a preferred embodiment of the invention is illustrated.
REFERENCES:
patent: 4228134 (1980-10-01), Alfo
patent: 4667841 (1987-05-01), Belle
patent: 5152212 (1992-10-01), Chauveau
patent: 5333660 (1994-08-01), Kohlmann et al.
patent: 5368073 (1994-11-01), Murphy
patent: 5445494 (1995-08-01), Hanson
Gimie Mahmoud M
Kamen Noah P.
Marinox Pompe di Angoli
McGlew and Tuttle , P.C.
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