Cutting – Means to drive or to guide tool – With simple oscillating motion only
Reexamination Certificate
2000-12-08
2002-05-14
Rachuba, M. (Department: 3724)
Cutting
Means to drive or to guide tool
With simple oscillating motion only
C083S694000, C083S698110
Reexamination Certificate
active
06386082
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention provides a paper cutter, and more particularly, to a paper cutter that can improve both manufacturing efficiency and document-cutting.
2. Description of the Prior Art
The edge blade and main board of a paper cutter of the prior art are positioned after manufacturing of the paper cutter. However, the positioning procedure is laborious and can lead to misalignment between the edge blade and main board to result in inferior cutting.
Please refer to FIG.
1
.
FIG. 1
is a schematic diagram of a prior art paper cutter
10
. The paper cutter
10
includes a cutting member
11
, a main board
12
for document placement, a side blade
13
fixed on the engaging side of the main board
12
, and a positioning element
16
for adjusting the positions of the cutting member
11
and the main board
12
. The cutting member
11
includes a handle
17
and an edge blade
14
. The handle
17
is used to lift the edge blade
14
while the edge blade
14
engages with the side blade
13
of the main board
12
to cut the document.
Generally, it takes approximately six minutes to manufacture a paper cutter
10
, and approximately 3 to 4 minutes to adjust the positioning element
16
. However, after a period of use, the positioning element
16
of the paper cutter
10
may no longer be fixed at the manufactured position to cause misalignment between the cutting member
11
and the main board
12
.
SUMMARY OF THE INVENTION
It is an objective of the present invention to provide a paper cutter without positioning elements to improve manufacturing efficiency, decrease labors cost, and prevent poor document-cutting.
In accordance with the claimed invention, a paper cutter includes a main board for document placement. The main board comprises a side blade attached to an engaging side of the main board, a slant surface formed on the front portion of the engaging side,. The side blade has a flat surface perpendicular to the upper surface of the main board while the slant surface extends outwards from a predetermined position of the engaging side to form a first acute angle with the flat surface of the side blade. The slant surface further extends outwards from its upper edge to form an obtuse angle with the upper surface of the main board.
REFERENCES:
patent: 678441 (1901-07-01), Stevens
patent: 884219 (1908-04-01), Scates
patent: 2270473 (1942-01-01), Porcelli
patent: 2518076 (1950-08-01), Scherig
patent: 2573767 (1951-11-01), Jensen et al.
patent: 4957235 (1990-09-01), Beno et al.
patent: 5320011 (1994-06-01), Lee
patent: D443294 (2001-06-01), Munoz
Hu Winston
Primax Electronics Ltd.
Prone Jason
Rachuba M.
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