Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Access opening through portion of casing or cover
Reexamination Certificate
1999-07-07
2001-08-07
Ryznic, John E. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Access opening through portion of casing or cover
Reexamination Certificate
active
06270316
ABSTRACT:
The present invention refers to a pump with suction and delivery openings along the same axis, easy to dismantle, with minimum removal of the fixed parts, in particular of the actuator and of the suction and delivery hoses.
In pumps with suction and delivery openings along the same axis, usually known as “in line pumps”, ordinary maintenance and replacement of the impeller, seals and any wear rings or internal parts in general, usually require fairly complex operations.
It is, in fact, necessary to remove the motor, then open the body and remove the internal parts in question.
This operation must be repeated each time such repairs are necessary, causing long periods of dead times and requiring complex dismantling and reassembly procedures.
Moreover, this operational procedure has many drawbacks in particular in naval systems where pumps are installed in extremely limited areas making maintenance procedures even more difficult.
It is an object of the present invention to provide a pump of said type, wherein internal repairs can be carried out, without having to remove the motor and other parts connected thereto.
It is a further object of the present invention to provide a pump which does not present the previous construction drawbacks of known models, while at the same time offering excellent seals and efficient performance.
The above objects, in accordance with the present invention, can be attained by providing an easy to dismantle pump with suction and delivery openings along the same axis, as described above. Further characteristics are described in the appended claims.
The characteristics and the advantages of a pump, with suction and delivery openings along the same axis, easy to dismantle, will become apparent from the following description, given herein solely by way of example and not binding, with reference to the drawings wherein:
REFERENCES:
patent: 1700678 (1929-01-01), Jennings
patent: 2250306 (1941-04-01), La Bour
patent: 2868134 (1959-01-01), Nagle
patent: 3079865 (1963-03-01), Lipe
patent: 3601498 (1971-08-01), Schroeder
patent: 3847504 (1974-11-01), Martin
patent: 785740 (1935-08-01), None
Hedman & Costigan ,P.C.
Ryznic John E.
Termomeccanica S.p.A.
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