Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Reexamination Certificate
2002-01-04
2004-06-01
Chin, Randall (Department: 1744)
Brushing, scrubbing, and general cleaning
Implements
Brush or broom
C015S184000
Reexamination Certificate
active
06742214
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is related to a de-dusting brush structure having an adjustment member fitted onto a connecting body and movable along the connecting body. An annular rib of the adjustment member is up and down adjustably engaged with any of the ribs of the connecting body to locate the adjustment member so as to change the volume of the brush body. It is unnecessary for a user to press, hold or pinch the brush body when using the de-dusting brush to clean an object with differential face or depth.
FIG. 1
shows a conventional de-dusting brush including an outer casing
10
, an inner casing
20
and a brush body
30
. The outer casing
10
is an elongated elliptic body formed with a tunnel
11
. A slide slot
12
is formed on the circumference of the outer casing
10
. One end of the slide slot
12
is formed with a restricting hole
13
. One end of the inner casing
20
is formed with three restricting plates
21
at equal intervals. A restricting key
22
is formed on upper face of free end of the upper restricting plate
21
. The brush body
30
is fixed on one side of the inner casing
20
.
The above conventional de-dusting brush has some shortcomings as follows:
1. The inner casing
20
can be moved to be located in the restricting hole
13
. Under such circumstance, the brush body
30
is totally moved out of the outer casing
10
and exposed to outer side. However, when assembled, a user needs to press the restricting plate
21
and the restricting key
22
and simultaneously aim the restricting key
22
at the slide slot
12
of the outer casing
10
. Accordingly, the pattern of the de-dusting brush is limited.
2. When assembled, a user needs to press the restricting plate
21
and the restricting key
22
and simultaneously aim the restricting key
22
at the slide slot
12
of the outer casing
10
. It is inconvenient for the user to perform such operation.
3. The brush body
30
is totally exposed to outer side or totally hidden. Therefore, it is impossible to vary the size of the brush body
30
to clean a differential face or depth.
4. When cleaning a differential face or depth, a user needs to hold or pinch the brush body
30
with a hand to reduce the volume thereof. Therefore, it is inconvenient to clean the differential face with such de-dusting brush.
5. When the restricting key
22
is located in the restricting hole
13
, a gap still exists so that the brush body will swing. This makes it inconvenient to clean a face with such de-dusting brush.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a de-dusting brush structure having an adjustment member which is directly fitted onto a connecting body and movable along the connecting body. An annular rib of the adjustment member is up and down adjustably engaged with any of the ribs of the connecting body to locate the adjustment member so as to change the volume of the brush body.
It is a further object of the present invention to provide the above de-dusting brush structure with which a user can conveniently clean an object with differential face or depth without pressing, holding or pinching the brush body. When assembled, it is unnecessary for the user to aim the adjustment member at the connecting body so that the pattern of the de-dusting brush is not limited. The ribs of the connecting body serve to firmly restrict and locate the annular rib of the adjustment member without swinging or dropping during cleaning operation.
REFERENCES:
patent: 1538220 (1925-05-01), Shultz
patent: 1749052 (1930-03-01), Watt
patent: 3106738 (1963-10-01), Bohne
patent: 3193863 (1965-07-01), Myers
Bacon & Thomas
Chien-Chang Enterprise Co., Ltd.
Chin Randall
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