Rotary kinetic fluid motors or pumps – With separating means or guard for solid matter in working...
Reexamination Certificate
2002-07-11
2003-12-09
Nguyen, Ninh H. (Department: 3745)
Rotary kinetic fluid motors or pumps
With separating means or guard for solid matter in working...
C415S211200
Reexamination Certificate
active
06659717
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a filter pump for a pool, particularly to one easy to be assembled and disassembled, and convenient in use.
It is believed that the best way of relieving heat of summer is to jump into cool water in a pool and make fun in it, and some people prefer to purchase a small-size portable pool together with a filter pump to be used at home rather than go swimming in a public swimming pool because the pool may be far from home and it is not necessarily hygienic to swim therein. The set of filter pump is used for eliminating impurities in the water of a pool by circulatory filtration, and enabling the water in the pool to be used repeatedly.
A conventional filter pump for a pool, as shown in
FIG. 1
, includes a pump body
10
, and a water intake connecter
101
and a water outlet connecter
101
′ for respectively combining a water pipe
20
to lead water out of and in a pool. The water pipe
20
has one end fitted around with a constriction device
30
made of arc-shaped metallic sheet, as shown in FIG.
3
. The arc-shaped metallic sheet has both ends respectively bent to extend outward and form a pair of wings
301
, which are made parallel to each other after closely constricted together. The wings
301
respectively have two through holes
302
for bolts
303
to be inserted therethruogh and then screw tightly with nuts
304
. After the water pipe
20
is combined respectively with the water intake connecter
101
and the water outlet connecter
101
′, the bolts
303
and the nuts
304
of the constriction device
30
are tightly screwed together by means of tools (such as a screwdriver and a spanner) so as to let the water pipe
20
firmly connected together with the water intake connecter
101
and the water outlet connecter
101
′.
However, the combination of the water intake connecter
101
and the water outlet connecter
101
′ with the water pipe
20
in the conventional filter pump
10
can hardly be done without tools, resulting in much trouble when the pool and the filter pump
10
have to be assembled for use or disassembled for storing. The pool and the filter pump
10
are not fixed or stationary, often have to be moved, disassembled and assembled, so the conventional filter pump is quite troublesome in using.
SUMMAERY OF THE INVENTION
The objective of the invention is to offer a filter pump for a pool, easy in assembling and disassembling, and convenient in use.
The filter pump includes a valve body provided with a water intake connecter and a water outlet connecter on one side for combining a water pipe respectively. The feature of the invention is that the water intake connecter and the water outlet connecter are respectively fixed with a connecter formed with male threads around the outer surface and a recessed stepped surface in the inner surface to make up a receiving space between the connector and the water intake connecter or the water outlet connecter. The water pipe is provided with two annular projecting ribs around the outer surface of its end, and between the two annular ribs is fitted a rotatable locking cover with female threads. Thus, after the water pipe is combined respectively with the water intake connecter and the water outlet connecter, the locking cover is threadably mounted on the connector to let the water pipe inserted in the receiving space between the connector and the water intake connecter and the water outlet connecter respectively, and the locking cover presses on the outer wall of the water pipe, achieving effect of assembling and disassembling with easiness.
REFERENCES:
patent: 3900223 (1975-08-01), Schafer et al.
patent: 4043917 (1977-08-01), Rowley et al.
patent: 4709726 (1987-12-01), Fitzgibbons
Bacon & Thomas PLLC
Chen Yuan-Chen
Nguyen Ninh H.
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