Geometrical instruments – Scriber – Curved line
Reexamination Certificate
2000-12-29
2003-04-15
Gutierrez, Diego (Department: 2859)
Geometrical instruments
Scriber
Curved line
C033S027030, C033S464000, C033S809000, C033S783000, C033S811000, C033S812000
Reexamination Certificate
active
06546634
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a hand tool, and more particularly to a compass cutter.
2. Description of Related Art
As shown in
FIG. 1
, a compass cutter of the prior art comprises a main body
10
, a slidable seat
11
, a connection rod
12
, a blade
13
, and a locating pin
14
. The main body
10
has a length which is so limited as to hinder the application of the prior art compass cutter. In addition, the connection rod
12
can not be folded to make the compass cutter compact to facilitate the carrying of the cutter. Furthermore, the blade
13
and the locating pin
14
are so exposed that they are hazardous to safety of a user of the compass cutter.
BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a compass cutter which is free of the drawbacks of the prior art compass cutter described above.
The compass cutter of the present invention comprises a main body, a slidable seat, an extension rod, a connection rod, and a blade. The extension rod is disposed between the main body and the slidable seat. The blade is secured in place by a fixation block. The connection rod is pivotally fastened with the slidable seat.
The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.
REFERENCES:
patent: 224401 (1880-02-01), Derickson
patent: 2087600 (1937-07-01), Knoblauch
patent: 2309809 (1943-02-01), Vane
patent: 3509631 (1970-05-01), Shimoyama
patent: 3562773 (1971-02-01), Wilamowski
patent: 3664025 (1972-05-01), Barto
patent: 4976037 (1990-12-01), Hines
patent: 5134784 (1992-08-01), Atienza
patent: 5153998 (1992-10-01), Duncan
patent: 5313715 (1994-05-01), Wang
patent: 5349760 (1994-09-01), DeVito
patent: 5379524 (1995-01-01), Dawson
patent: 5873175 (1999-02-01), Johnston
patent: 6167628 (2001-01-01), Jones et al.
patent: 2002/0073568 (2002-06-01), Johnson
De Jesús Lydia M.
Gutierrez Diego
Harrison & Egbert
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