Article placing table with an erasable writing device

Details Article placing table with an erasable writing device Article placing table with an erasable writing device

2000-08-07

2001-11-13

Muir, D. Neal (Department: 3712)

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Chalkboard or equivalent means having easily erasable surface

Reexamination Certificate

active

06315573

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a table for placing thereon an article such as a telephone or the like, and more particularly to an article placing table having an erasable writing device.
BACKGROUND OF THE INVENTION
It frequently becomes necessary to take note during a telephone conversation. Thus, it is desirable to provide a writing device in association with a telephone. As one typical example for aiming to achieve this object, there has been proposed a telephone table by the Japanese Utility Model Laid-Open Publication No. Hei 1-151648, wherein a telephone table includes an inner frame member with which a telephone number table, a writing pad and a writing tool are associated. However, in this type of telephone table, the intended functions can be achieved only by regularly supplementing the writing pad and the writing tool.
Meanwhile, as a desk-use writing device capable of repeatedly writing and erasing optional characters and figures without consuming any writing pad, there has been developed a writing device in which a microcapsule magnetic sheet is disposed on an top face thereof as a recording sheet. In this kind of writing device, characters and figures can be written as desired on the top face of the recording sheet with a magnetic pen having a magnet on the tip thereof, and the characters and figures written on the top face of the recording sheet can also be erased by an erasing magnetic member which has a magnet thereon and is disposed on a back face of the recording sheet.
The theory of the above writing device will now be briefly described. As shown in
FIG. 1
, a microcapsule magnetic sheet
10
for use in a recording sheet of a writing device has microcapsules
11
of approximately 500 &mgr;m in diameter which are two-dimensionally arranged between a top sheet
12
and a back sheet
13
. Black magnetic powders
14
dispersed in white color emulsion
15
are encapsulated in each of the microcapsules
11
. Thus, when magnets
16
,
17
are positioned close to the microcapsule magnet sheet
10
, the black magnetic powders
14
in the microcapsule
11
are magnetically attracted so as to present a black color on one side of the microcapsule magnet sheet
10
to which the magnets
16
,
17
are closely positioned. In contrast, on the other side of the microcapsule magnet sheet
10
, there is produced white color area due to the presence of only the white color emulsion
15
. Applying this theory of magneticphoresis to the writing device enables black color characters or figures to be written as desired on the front sheet
12
by means of the magnet
16
. In addition, when the magnet
17
is positioned close to and moved along the back sheet
13
of the microcapsule magnetic sheet
10
, the magnetic powders
14
in the microcapsules
11
are attracted by the magnet
17
toward the back sheet
13
, so that the written characters or figures on the front sheet
12
can be erased. It may be appreciated to apply the microcapsule magnetic sheet to a writing device in association with a table or base of a telephone or the like.
However, the microcapsule magnetic sheet described above has a problem that a burdensome operation is necessary for erasing the written memorandum. Thus, it cannot exactly be achieved to enhance usability by using this kind of microcapsule magnetic sheet as a writing device for use in a mount of a telephone or the like.
SUMMARY OF THE INVENTION
It is an object of the present invention to solve the problem inherent to the conventional microcapsule magnetic sheet and to provide an improved table or base of a telephone or the like associated with a microcapsule magnetic sheet as a writing device, the microcapsule magnetic sheet being disposed in a manner that the upper surface area of the table or base can be effectively utilized when it is placed on a desk or the like.
Another object of the present invention is to provide a table or a base for a telephone or the like associated with a writing device including a microcapsule magnetic sheet having an erasing device which is easy to handle.
In order to achieve the other objects, the present invention provides a table or base associated with a writing device comprising an outer case, a recording sheet which is movable into and out of the outer case, the recording sheet including a microcapsule magnetic sheet and an erasing magnetic member disposed within the outer case. The outer case has a top surface on which a telephone or other article may be placed. The erasing magnetic member is provided so that it is positioned under the recording sheet when the recording sheet is inserted into the outer case. When the recording sheet is pulled out from the outer case, a top face of the recording sheet is exposed so as to make it possible to write in by means of a magnetic pen. When the recording sheet is pushed into the outer case, the magnetic writings on the recording sheet can be erased as the recording sheet passes over the erasing magnetic member.


REFERENCES:
patent: 4182938 (1980-01-01), Neumeier
patent: 5820385 (1998-10-01), Ohashi et al.
patent: 2034640-A (1980-06-01), None
patent: 2214137-A (1989-08-01), None
patent: 1-151647 (1989-10-01), None
patent: 1-151648 (1989-10-01), None

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