Fluid handling – Systems – With pump
Reexamination Certificate
2000-07-11
2001-10-23
Rivell, John (Department: 3753)
Fluid handling
Systems
With pump
C137S565220, C123S509000, C123S514000
Reexamination Certificate
active
06305417
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a reservoir for a feeding module which for example feeds liquids, such as fuel and has a number of inserts. It also relates to a feeding module provided with such a reservoir.
With known configurations of feeding modules which are arranged in a supply tank, a container is composed of a tubular synthetic plastic part which is produced by extrusion and a bottom part which seals it. The tubular synthetic plastic part receives a feeding aggregate which aspirates fuel from a suction chamber near the bottom part and feeds it to the internal combustion engine. A chamber is separated in the tubular synthetic plastic part, which extends along the longitudinal axis of the synthetic plastic part and is connected with a supply tank through an opening in the bottom part. In the partial chamber a float of a filling level sensor is arranged.
The feeding module which is configurated in this way with a reservoir which surrounds the feeding aggregate must be actively filled, and for this purpose suction jet pumps can be utilized. They are connected as a rule with elastic conduits or hoses, which represent additional components and take reservoir volume, whose limitation in some applications can be undesirable.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a reservoir for a feeding module, which avoids the disadvantages of the prior art.
In keeping with these objects and with others which will become apparent hereinafter, one feature of present invention resides, briefly stated, in a reservoir for a feeding module, in which functional surfaces as well as feeding passages are formed on joining surfaces of a tubular cylinder part and a bottom part.
With the sealing surfaces and passage surfaces formed in the reservoir components to be joined, separate hoses and conduits in reservoir can be dispensed with. Furthermore, the receiving cap and openings for the inserts are provided already in the tubular cylinder part and the bottom part, which for example can be formed as synthetic injection molded parts produced in mass production. When in corresponding embodiments of the reservoir the openings for the suction jet pump are not needed, they can be injection molded or not made during the manufacture of the corresponding parts. In the same way, the not required openings can be provided with plugs and thereby closed.
In an advantageous manner, the functional surfaces on the components to be joined can be formed as sealing surfaces or as closing surfaces. Feeding passage components can be formed in the tubular cylinder part at the joining surfaces, and in the bottom part of the reservoir the corresponding passage bottoms which close the feeding passage can be provided.
Receiving surfaces for at least one feeding element, for example the reservoir of the actively filling suction jet pump, can be formed for example on the tubular cylinder part. Also, connecting surfaces and cap surfaces for a fuel feeding aggregate can be formed in the tubular cylinder part, as well as receiving surfaces and feeding openings for a filling valve. A preliminary screen can be provided in the cylinder wall of the tubular cylinder part, which retains impurities from the passage of the filling valve.
In addition to receiving and sealing surfaces on the tubular cylinder part, these surfaces can be also formed on the bottom part of the reservoir. During joining of the both components, the passage bottoms which closess the feeding passage upper part on the tubular cylindrical part is located, also provide the sealing surfaces for the filling valve relative to the tank bottom, as well as the sealing surfaces for fuel feeding aggregate which is received in the tubular cylinder part.
The novel features which are considered as characteristic for the present invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
REFERENCES:
patent: 4869225 (1989-09-01), Nagata et al.
patent: 5016670 (1991-05-01), Sasaki et al.
patent: 5107889 (1992-04-01), Sasaki et al.
patent: 5680847 (1997-10-01), Begley et al.
patent: 5809975 (1998-09-01), Tuckey et al.
patent: 6155793 (2000-12-01), Tuckey et al.
Kleppner Stephan
Schreckenberger Dieter
Rivell John
Robert & Bosch GmbH
Striker Michael J.
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