Cutlery – Combined cutlery or combined with ancillary feature – With material-holder or disposal
Reexamination Certificate
2000-02-03
2001-12-04
Payer, Hwei-Slu (Department: 3724)
Cutlery
Combined cutlery or combined with ancillary feature
With material-holder or disposal
C030S332000, C007S118000, C007S165000
Reexamination Certificate
active
06324762
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to cutting apparatus and more particularly to a combinable scriber knife which has a housing combined without screws or rivet so as to be readily assembled or disassembled during the replacement of blade.
Conventional scriber knife includes at least two types. The first type comprises a hollow interior handle into which is a breakable blade slidably received. The blade is composed of a plurality of breakable portions. When the edge of the distal portion becomes blunt, it can be broken off and let the sharp-pointed edge of the second portion to be available. This type of scriber knife is convenient in use. However, if wastes of material. Besides, when all portions of the blade is broken off, it becomes useless. The second type of the scriber knife comprises a combined handle which is fastened by screws or rivet and a stronger single blade fixed into the handle. This blade can cut rigid materials. However, it is difficult to change the blade when it becomes blunt.
SUMMARY OF THE PRESENT INVENTION
The present invention has a main object to provide a combinable scriber knife which has a handle releasibly combined with a main housing and a subordinate housing without using screw or rivet.
Another object of the present invention is to provide a combinable scriber knife which has a retaining slot at a first end of the main housing for securing a retaining plate at a first end of the subordinate housing.
Still another object of the present invention is to provide a combinable scriber knife which has a retaining knot in the first end for retaining a blade.
Further object of the present invention is to provide a combinable scriber knife which has a U-shaped hook pivoted at a second end of the subordinate housing for coupling the subordinate housing to an end of the main housing.
Further object of the present invention is to provide a hexagon cavity at the second end of the main housing enabling the knife to engage with a shank of screwdriver.
Further object of the present invention is to provide a combinable scriber knife which includes a plurality of chambers inside the handle for receiving the shanks of screwdriver with different heads.
The present invention will become more fully understood be reference to the following detailed description thereof when read in conjunction with the attached drawings.
REFERENCES:
patent: 5553340 (1996-09-01), Brown, Jr.
patent: 5581834 (1996-12-01), Collins
patent: 5581890 (1996-12-01), Schmidt
patent: 5735005 (1998-04-01), Wang
patent: 5979057 (1999-11-01), Chao
patent: 6047619 (2000-04-01), Anderson et al.
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