Weighing scales – Illuminated
Reexamination Certificate
2001-03-23
2003-05-13
Gibson, Randy W. (Department: 2841)
Weighing scales
Illuminated
C177S199000, C177S211000, C177S245000, C600S547000
Reexamination Certificate
active
06563059
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is related to an improved fat weighing scale. When a user's both feet step onto a conductive section of the step board of the weighing scale, a current is conducted to a control chip set, whereby the display panel can precisely display the measured fat value. When the weight of the user depresses the step board, the step board synchronously downward drives the transmission sensors and switch seats in the seat bodies on four corners of the step board. At this time, the switches of the switch seats are activated to energize the transmission sensors and discharge current. The current is conducted to the control chip set, whereby the display panel can more precisely display the measured weight value without error.
FIG. 1
shows a conventional fat weighing scale composed of a step board
10
, multiple measuring bosses
15
, an upper cover
20
, a base seat
30
, two linkages
35
and two springs
37
. The step board
10
is a reverse basin body having a downward extending peripheral wall defining an opening facing downward (as shown in
FIG. 2
). The step board
10
serves to bear the weight of a user. Two sides of the bottom edge of the peripheral wall are provided with retaining lips
11
. The step board
10
is formed with multiple insertion holes
12
at equal intervals inside the peripheral wall. The insertion legs
151
of the measuring boss
15
are inserted in the insertion holes
12
. A display panel
13
and several control buttons
14
are arranged in front of the insertion holes
12
. A control chip set
131
is connected under the display panel
13
and connected to the control buttons
14
. The upper cover
20
is a case having an opening facing downward. The upper cover
20
is retained in the peripheral wall of the step board
10
for transmitting the gravity. Two sides of the upper cover
20
are formed with hook holes
21
. The front side of the upper cover
20
is formed with a rectangular window
22
corresponding to the display panel
13
of the step board
10
. A U-shaped support leg
23
is fixed on each corner of bottom face. A press plate
231
is transversely fixed on two sides of the support leg
23
. The base seat
30
is a case having an opening facing upward. Two sides of the base seat
30
are formed with hook holes
31
. A support leg
32
is fixed on each corner of top face. A weighing unit
33
is disposed at the middle of rear side. One side of the weighing unit
33
is connected with a connector
34
. Two sides of front end are respectively connected with the linkages
35
. Each linkage
35
has a long link
351
. One end of the long link
351
is fixed on front end of the weighing unit
33
. The other end thereof is hooked on the support leg
32
on front side. A short link
352
is connected with the middle of the long link
351
by a coupling ring
353
. The other end of the short link
352
is hooked on the support leg
32
on rear side. Cells
36
are disposed on the center of the base seat
30
and connected with the connector
34
.
The conventional structure has some shortcomings as follows:
1. The structure is complicated and has numerous components. It is necessary to one by one insert the bosses
15
. Such procedure is quite troublesome and time-consuming so that the cost for assembly is high.
2. When measured, the weight of a user downward presses the linkages
35
of the base seat
30
to mechanically activate the weighing unit
33
. In the case that the user's feet step on a lateral portion of the step board
10
or only one foot steps on the step board
10
, the force transmitted to the weighing unit
33
through the long and short links
351
,
352
of the linkages
35
will be changed. As a result, the measured weight will be different from the actual weight and the precision will be poor.
3. The step board
10
is not equipped with any handle so that it is inconvenient to carry the scale.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide an improved fat weighing scale having less components so that the assembly can be easily and quickly completed and the cost is lowered.
It is a further object of the present invention to provide the above fat weighing scale. When a user's both feet step onto the step board, the step board simultaneously downward drives the transmission sensors and switch seats in the seat bodies on four corners. Even if the user's feet step on the step board at too outward position, the gravity can be still evenly distributed to all the seat bodies. Accordingly, the transmission sensors and switch seats in the seat bodies are synchronously downward pressed. Therefore, the fat and weight value can be highly precisely measured without error.
It is still a further object of the present invention to provide the above fat weighing scale in which the bottom of the display panel on front side of the step board is recessed to form a handle so that the user can conveniently carry the fat weighing scale.
The present invention can be best understood through the following description and accompanying drawings wherein:
REFERENCES:
patent: 4082153 (1978-04-01), Provi
patent: 4355692 (1982-10-01), Ostrelich
patent: 4433741 (1984-02-01), Ryckman, Jr.
patent: 4739848 (1988-04-01), Tulloch
patent: 4800973 (1989-01-01), Angel
patent: 5415176 (1995-05-01), Sato et al.
patent: 5886302 (1999-03-01), Germanton et al.
patent: 6166335 (2000-12-01), Soehnle
patent: 6369337 (2002-04-01), Machiyama et al.
patent: 6473643 (2002-10-01), Chai et al.
Bacon & Thomas PLLC
Gibson Randy W.
Shang Chuen Weighting Machine Co., Ltd.
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