Books – strips – and leaves – Book or leaf holder
Reexamination Certificate
2000-08-04
2001-04-17
Fridie, Jr., Willmon (Department: 3722)
Books, strips, and leaves
Book or leaf holder
C402S004000, C248S452000
Reexamination Certificate
active
06217075
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a collapsible clipboard, particularly to one simple to assemble and collapse.
Conventional clipboards are popular, and used by workers engaging in warehouse, goods delivery, etc., and often provided with a hollow space for keeping necessary data therein. A known conventional clipboard
10
shown in
FIGS. 1 and 2
includes a bottom case
11
made of a thin metal plate pressed to have four side vertical walls, a board
12
closed on the bottom base
11
, and a drawer
13
. The bottom case
11
have an inner hollow space
111
for containing paper or data, plural pivot supporters
112
formed spaced apart on an upper edge of a front vertical wall and respectively having a pivot hole
113
. The board
12
has plural pivot supporters
121
with a pivot
122
holes spaced apart to interpose alternately with the pivot supporters
112
of the bottom case
11
for an elongate pivot
15
to fit in all the pivot supporters
112
and
121
so as to combine pivotally the board
12
with the bottom case
11
. Further, the board
12
has an elastic clip
16
fixed on a middle section of a front end for pinching paper on the surface
123
of the board
12
. In addition, a drawer case
124
is riveted under the right front bottom of the board
12
for a drawer
13
to slide in and out of. Then a calculator
17
can be stored in the drawer
13
to be taken out and used when necessary. The bottom case
11
has an aperture
114
formed in a front portion of the right side wall to face the drawer case
124
and a horizontal engage slot
115
formed in the middle section of a rear wall. The board
12
has an engage elastic bent small plate
125
movably fixed with rivets on the middle section of a rear end to fit through the horizontal engage slot
115
when the board
12
is closed on the bottom base
11
to secure the board
12
on the bottom base
11
.
The conventional clipboard
10
still has the following disadvantages, in spite of its usefulness.
(1) The board
12
and the bottom case
11
are pivotally connected with the elongate pivot
15
fitting in the pivot holes
113
and
122
of the pivot supporters
112
and
121
, all of which are to be aligned before the elongate pivot
15
can fit in. Then it may take much time to finish connecting pivotally the board
12
and the bottom case
11
, very troublesome. In addition, the board
12
and the bottom case
11
are made of thin metal plates bent and then riveted, resulting in a high cost.
(2) The drawer case
124
for the drawer is located under the board
12
and placed in the interior
111
of the bottom case
11
, so the right side wall of the bottom case
11
has to be cut the aperture
114
for the drawer
13
to move in and out. So the dimension of the interior
111
is reduced so that the height of the bottom case has to be increased for containing papers for use.
SUMMARY OF THE INVENTION
The objective of the invention is to offer a collapsible clipboard made of plastic, having a bottom case and a cap board pivotally connected to the bottom case, and an upper board smaller than the cap board pivotally connected to the bottom case. Then the upper board has plural hooks fixed on a lower surface to hold a calculator to be taken off if it is to be used.
REFERENCES:
patent: 3670370 (1972-06-01), Goodwin
patent: 4896927 (1990-01-01), Liu et al.
patent: 5116012 (1992-05-01), Offenhaner et al.
patent: 5180133 (1993-01-01), Chang
patent: 5413382 (1995-05-01), Corvell et al.
patent: 5732925 (1998-03-01), Shamoon
patent: 5823500 (1998-10-01), La Coste
Dougherty & Troxell
Fridie Jr. Willmon
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