Cutlery – Cutting tools – Plural cooperating blades
Reexamination Certificate
2000-07-21
2002-01-22
Payer, Hwei-Slu (Department: 3724)
Cutlery
Cutting tools
Plural cooperating blades
C030S257000, C030S262000
Reexamination Certificate
active
06339884
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is related to an improvement in the structure of scissors for cutting grass.
2. Description of the Prior Art
Referring to
FIGS. 4 and 5
, the conventional scissors for cutting grass includes a head
30
provided with a protruded tubular member
31
at one end thereof. The tubular member
31
has an enlarged conical outer end
32
forced into a hole at an inner end of a main body
40
. An end of a linking wire
33
extends through the tubular member
31
into the head
30
to connect with a movable blade
34
, while the other end of the linking wire
33
extends through the main body
40
to connect with a handle
43
, so that one may move the handle
43
to control the operation of the movable blade. A stationary blade
35
is permanently fixedly mounted on the bottom of the head
30
. Nevertheless, as the enlarged conical end
32
of the tubular member
31
is forced into the main body
40
, it will be impossible to dismantle the scissors for maintenance once assembled. Hence, even if the blades are blunt or broken, it is impossible to replace them with new ones, so that once there is something wrong with the scissors no matter whether the blades can still be used or not, the scissors will be discarded thereby wasting money and natural resources. In addition, when the scissors are not correctly assembled in manufacture, the enlarged conical end
32
of the scissors must be broken in order to disengage the head
30
from the main body
40
thus increasing the manufacturing cost.
Therefore, it is an object of the present invention to provide an improvement in the structure of scissors for cutting grass which can obviate and mitigate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
This invention is related to an improvement in the structure of scissors for cutting grass.
It is the primary object of the present invention to provide an improvement in the structure of scissors for cutting grass which can be disassembled as required.
It is another object of the present invention to provide an improvement in the structure of scissors for cutting grass the blades of which can be replaced as required.
According to a preferred embodiment of the present invention, scissors for cutting grass includes a head having an end formed with an opening having a plurality of internal teeth, a main body provided with a cylindrical member having a neck at an intermediate portion and a geared portion at an inner portion, the main body being engaged with the head with the cylindrical member fitted into the opening, a handle pivotally connected with the main body, a positioning member inserted between the head and the main body, a linking wire having an end inserted through the cylindrical member to connect with the handle, a movable blade having an end connected with another end of the linking wire, and a stationary blade pivotally connected with the movable blade and mounted on a bottom of the head by screws.
The foregoing objects and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts. Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 1941718 (1934-01-01), Rasmussen
patent: 2306506 (1942-12-01), Simonsen et al.
patent: 2964846 (1960-12-01), Steede
patent: 3339281 (1967-09-01), Chow
patent: 4069584 (1978-01-01), Germain
patent: 4739556 (1988-04-01), Orthey
A & J
Payer Hwei-Slu
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