Cutlery – Cutting tools – With guard and/or guide
Reexamination Certificate
2000-03-20
2001-12-11
Peterson, Kenneth E. (Department: 3724)
Cutlery
Cutting tools
With guard and/or guide
C030S286000, C030S319000
Reexamination Certificate
active
06327783
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to a protective shield of a round knife, and more particularly to a means for rotating and locating the protective shield of the round knife.
BACKGROUND ART
As shown in
FIGS. 1 and 2
, a round knife
10
of the prior art comprises a handle
11
which is provided at the front end thereof with a rotatable protective shield
12
covering a round blade
13
. The protective shield
12
is rotated to expose the round blade
13
or to shield the round blade
13
.
The round knife
10
of the prior art described above is defective in design because the protective shield
12
can not be easily turned with a finger in spite of the protective shield
12
being provided in the outer side thereof with two protrusions
121
and
122
which are too small in size to stop the finger. In addition, the round blade
13
can be accidentally exposed at such time when the protective shield
12
is exerted on by an external force. In other words, the protective shield
12
of the prior art round knife
10
is a safety hazard.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a protective shield of a round knife, which is free from the drawbacks or the protective shield of the prior art round knife described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a round knife comprising a handle with a head portion which is provided with a slot for receiving a round knife blade and a support frame. The support frame is provided with an arcuate protective shield. The round knife blade and the support frame are pivoted in the slot such that the rotating and the locating of the round knife blade are controlled by the support frame.
The foregoing objective and features of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.
REFERENCES:
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patent: 4020550 (1977-05-01), Okada
patent: 4301594 (1981-11-01), Okada
patent: 4601103 (1986-07-01), Sugiyama
patent: 5101564 (1992-04-01), Melter
patent: 5144749 (1992-09-01), Chen
patent: 5299355 (1994-04-01), Boda et al.
patent: 5355588 (1994-10-01), Brandenburg, Jr. et al.
patent: 5711077 (1998-01-01), Schulz et al.
patent: 5765289 (1998-06-01), Schulz et al.
patent: 6044565 (2000-04-01), Arend et al.
patent: 6094824 (2000-08-01), Takeshita
Choi Stephen
Harrison & Egbert
Peterson Kenneth E.
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