Textiles: fluid treating apparatus – Machines – Combined
Reexamination Certificate
1999-01-14
2001-06-26
Stinson, Frankie L. (Department: 1743)
Textiles: fluid treating apparatus
Machines
Combined
C068S207000, C068S01300A
Reexamination Certificate
active
06250118
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This application claims priority under 35 U.S.C. §§119 and/or 365 to Patent Application No. 98-7069 filed in Korea on Mar. 4, 1998; and Patent Application No. 98-7503 filed in Korea on Mar. 6, 1998; the entire content of which is hereby incorporated by reference.
The present invention relates to a washing machine, and more particularly, to a washing machine capable of effectively dissolving the detergent by magnetizing the water to be supplied into a detergent container.
2. Prior Art
FIGS. 7 and 8
show a conventional washing machine. The washing machine has an outer tub
107
suspended by a suspension
105
in a casing
101
, a rotatable washing tub
109
installed in the outer tub
107
, a pulsator
111
installed on the bottom of the washing tub
109
, a driving motor
117
for rotating the washing tub
109
and/or the pulsator
111
, a gear assembly
113
for transmitting the driving force of the driving motor
117
to the washing tub
109
and/or the pulsator
111
, and a belt
115
for connecting the driving motor
117
with the gear assembly
113
.
The upper side of the casing
101
is covered with a top cover
103
having an opening
119
at the central portion thereof. A door
121
for opening/dosing the opening
119
is installed on the top cover
103
.
An accommodation section
125
is provided at the upper portion of the casing
101
, and a detergent container is installed in the accommodation section
125
. Floury detergent is contained in the detergent container
129
. Further, a filtering member
160
is installed in the detergent container
129
in order that the detergent in a lump is not supplied into the washing tub
109
.
A water supply pipe
123
is installed on the upper part of the accommodation section
125
. The detergent in the detergent container
129
is dissolved by the water supplied into the detergent container
129
from the water supply pipe
123
, and the water mixed with detergent is supplied into the washing tub
109
.
As the pulsator
111
is being rotated by the driving motor
117
, the laundry accommodated in the washing tub
109
is washed. When the washing operation is completed, the washing machine performs the dehydrating operation by rotating the washing tub
109
together with the pulsator
111
at high rotational speed. After the dehydrating operation, the rinsing operation is performed. For the rinsing operation, the washing machine supplies water into the washing tub
109
again through the water supply pipe
123
, and then operates the pulsator
111
.
The water supplied through the water supply pipe
123
contains positive ions such as calcium ion or magnesium ion. Such metallic impurities impede dissolution of the detergent, so the detergent in the detergent container
129
may not be completely dissolved by the water. If the detergent is incompletely dissolved, the efficiency of washing decreases. Furthermore, some detergent which is not dissolved may remain in the detergent container
129
. The remaining detergent may be dissolved by the water supplied for the rinsing operation, and then supplied into the washing tub
109
. Therefore, the efficiency of rinsing operation may decrease.
SUMMARY OF THE INVENTION
The present invention has been proposed to overcome the above-described problems in the prior art, and accordingly it is the object of the present invention to provide a washing machine capable of effectively dissolving the detergent contained in the detergent container.
To achieve the above object, the present invention provides a washing machine comprising: a washing tub for accommodating laundry; a detergent container for containing a detergent to be supplied into the washing tub; and a means for applying a magnetic field to water to be supplied into the detergent container.
The applying means comprises: a permanent magnet; and a magnet casing for accommodating the permanent magnet and having a water passage part formed on a central portion thereof, through which the water supplied into the detergent container passes. The permanent magnet takes the shape of a ring surrounding the water passage part.
The applying means is installed in the detergent container, and is fixed by a fixing means. The fixing means comprises: a screw part formed on a part of the magnet casing; and a screw assembly part formed on a part of the detergent container, to which the screw part is screwed.
The water is magnetized by the applying means so that the metallic impurities are eliminated. Thus, the efficiency for dissolving the detergent increases, and the efficiency of washing increases. Furthermore, since no detergent remains in the detergent container, the efficiency of rinsing operation increases.
REFERENCES:
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patent: 3669274 (1972-06-01), Happ et al.
patent: 3719583 (1973-03-01), Ustick
patent: 4167480 (1979-09-01), Mach
patent: 4892655 (1990-01-01), Makovec
patent: 4946590 (1990-08-01), Hertzog
patent: 4959142 (1990-09-01), Dempo
patent: 4995425 (1991-02-01), Weisenbarger et al.
patent: 5114571 (1992-05-01), Pier et al.
patent: 5296141 (1994-03-01), Ellison
patent: 5364536 (1994-11-01), Mericer
patent: 5500121 (1996-03-01), Thornton et al.
patent: 5617885 (1997-04-01), Centis
patent: 5682774 (1997-11-01), Baumgartner
patent: 5753124 (1998-05-01), Bogatin et al.
patent: 5837143 (1998-11-01), Mercier
patent: 5866010 (1999-02-01), Bogatin et al.
Burns Doane Swecker & Mathis L.L.P.
Samsung Electronics Co,. Ltd.
Stinson Frankie L.
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