Information
-
Patent Grant
-
6675485
-
Patent Number
6,675,485
-
Date Filed
Friday, September 27, 200222 years ago
-
Date Issued
Tuesday, January 13, 200420 years ago
-
Inventors
-
-
Examiners
- Shoap; Allan N.
- Alie; Ghassem
-
CPC
-
US Classifications
Field of Search
US
- 030 330
- 030 321
- 030 340
- 030 319
- 030 320
- 030 307
- 030 161
- 030 160
- 030 339
- 030 331
- 030 265
- 030 517
-
International Classifications
-
Abstract
An artistic knife with adjustable handle includes a straight handle which is combined with a pair of first and second halves, a head rotatably gripped by the straight handle and having a blade on front end and an annular ring on rear end sleeved on a tubular projection of the first half. The annular ring has an inner flange in which a plurality of pairs of mortises are symmetrically formed. A positioning member disposes into the tubular projection and biased by a spring and has a protrudent surface engaged within a circular through hole of the second half through the annular ring and a large tenon and a small tenon on opposing outer peripheries respectively engaged with the mortises. Thereby, press the positioning member inward to enable the head to rotate a certain degree of angle between the head and the straight handle. Then release the positioning member which controls the movement of the head.
Description
BACKGROUND OF THE INVENTION
The present invention relates to cutters and more particularly to an artistic knife with adjustable handle which handle can be bent into different angles in order to fit the requirement of the users.
Normally, a heavy duty artistic knife has a blade in one end of the handle which may be in straight form or in arcuate form. The blade in a straight handle forms a small angle with a work piece. Whereas the blade in an arcuate handle can form a large angle with the work piece. So that the user has to prepare a lot of artistic knives of different angled handles in order to finish his job, causing great inconvenience.
SUMMARY OF THE PRESENT INVENTION
The present invention has a main object to provide an artistic knife with adjustable handle for which the user can be able to change the angle of the blade relative to the straight portion of the handle to perform his job on a work piece.
Another object of the present invention is to provide an artistic knife with adjustable handle by which the user can save a large sum of cost by enjoy a great convenience.
Accordingly, the artistic knife of the present invention comprises generally a straight handle combined with a first half and a second half, a head having a blade in a first end and an annular ring rotatably sleeved on a tubular projection of the first half and a positioning member controlling the movement of the annular ring. The annular ring has pairs of mortises spacedly and symmetrically formed in the inner periphery in registry with a large tenon and a small tenon which are symmetrically formed on opposite outer periphery of the positioning member. Upon the above structure, press in the positioning member to disengage the tenons with the mortises in order to set the head free to rotate. Then release the positioning member, the tenons will automatically engage with a pair of mortises when the head is already turned at a certain degree angle relative to the straight portion of the handle.
The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is an exploded perspective view of the preferred embodiment of the present invention,
FIG. 2
is a top sectional view of the assembly of the present invention,
FIG. 3
is a side section of
FIG. 2
,
FIG. 4
is a perspective view of that the head is bent downward to form a certain degree angle with the straight portion of the handle,
FIG. 5
is a top sectional view of
FIG. 4
, and
FIG. 6
is a side view of FIG.
4
.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to
FIGS. 1
,
2
and
3
, of the drawings, the artistic knife with adjustable handle of the present invention comprises a straight handle
1
including a first half
10
and a second half
20
wherein a head
30
is rotatably gripped by the first half
10
, the second half
20
and a positioning member
40
in which the movement of the head
30
is controlled.
The first half
10
has a tubular projection
11
projecting inward from an inner surface abutting the front end thereof including an axial slot
111
in a peripheral wall and a circular groove
112
in the bottom for engaging one end of a spring
12
, a pair of transverse screw holes
13
and
14
spacedly formed in the body and a rectangular groove
15
in an inner surface of the rear end of the first half
10
.
The second half
20
has a circular through hole
21
is located adjacent the front end of said second half
20
in registry with the tubular projection
11
of the first half
10
, a pair of transverse screw holes
22
and
23
spacedly formed are in the body of the second half
20
for engaging with the screw holes
13
and
14
of the first half
10
and a rectangular groove
26
in an inner surface abutting the rear end of the second half
20
in registry with the rectangular groove
15
of the first half
10
(as shown in FIG.
3
).
The head
30
has a blade
31
secured to front end and an annular ring
32
on the rear end sleeved on the tubular projection of the first half. The annular ring
32
has two pairs of mortises
321
and
324
,
322
and
323
symmetrically formed in an inner flange thereof.
The positioning member
40
has a circular body, a protrudent surface
41
on the front side, an annular flange
42
on the back side, a large tenon
43
and a small tenon
44
which are formed symmetrically on opposing peripheries abutting the flange
42
and a circular groove
45
of the positioning member
40
in bottom for disposing other end of the spring
12
as shown in
FIG. 2
, which provides resilience to the positioning member
40
.
When assembling, first dispose the spring
12
and the positioning member
40
into the tubular projection
11
of the first half
10
with the large tenon
42
slidably engaged into the axial slot
111
, then sleeve the annular ring
32
of the head
30
onto the tubular projection
11
so that the positioning member
40
will not be jumped out due to the inner flange of the annular ring
32
. Finally, combine the second half
20
of the straight handle
1
with the first half
10
and secured by a pair of screws
24
and
25
through the screw holes
13
,
22
and
14
,
23
.
After the accomplishment of assembly, the tenons
43
and
44
are respectively engaged with the mortises
321
and
324
and the protrudent surface
14
is engaged within the circular through hole
21
of the second half
20
. Therefore, the head
30
is parallel to the straight handle
1
. The rectangular grooves
15
and
26
of the first and second halves
10
and
20
are combined into a rectangular cavity for the engagement of a shank of a screwdriver therein (as shown in FIG.
3
).
Referring to
FIGS. 4
,
5
and
6
, when press the protrudent surface
41
of the positioning member
40
inward, the tenons
43
and
44
are disengaged from the mortise
231
and
234
so as to set the head
30
free to rotate counterclockwise for a certain degree of angle. Upon releasing of the positioning member
40
, the tenons
43
and
44
will be automatically engaged with the mortises
322
and
323
so that the head
30
forms a certain degree of angle with the straight handle
1
to permit the user to cut the work piece in deference manner. Actually, more mortises can be made in the inner flange of the annular ring
30
in order to facilitate the user to make different angles between the head
30
and straight handle
1
.
Note that the specification relating to the above embodiment should be construed as an exemplary rather than as a limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents.
Claims
- 1. An artistic knife with adjustable handle comprising:a straight handle which is combined with a first half and a second half; said first half having a tubular projection projecting inward from an inner surface abutting front end thereof, said tubular projection including an axial slot in a peripheral wall and a first circular groove in bottom for disposing one end of a spring, a pair of first transverse screw holes spacedly formed in the body of said first half and a first rectangular groove in an inner surface of rear end thereof; said second half having a circular through hole is located adjacent front end of said second half in registry with the tubular projection of said first half, a pair of second transverse screw holes are formed in the body of the second half for engagement with the first transverse screw holes and a rectangular groove is formed on an inner surface of said second half in registry with the first rectangular groove of said first half; a positioning member having a circular body engaged into the tubular projection of said first half, a protrudent surface on the front side of the positioning member for engaging in the circular through hole of said second half, an annular flange on the back, a large tenon and a small tenon are formed symmetrically on the opposing outer peripheries abutting said annular flange, wherein said large tenon is slidably engaged into the axial slot of said tubular projection and a second circular groove in bottom for disposing other end of said spring; a head member rotatably gripped by said first and second halves and having a blade on front end and an annular ring on rear end sleeved onto the tubular projection of said first half with said positioning member engaged therein; said annular ring having an inner flange in which two pairs of mortises are formed symmetrically for engaging the large and the small tenons of said positioning member respectively; whereby upon pressing said positioning member inward enables said head to rotate a certain degree of angle relative to said straight handle.
- 2. The artistic knife as recited in claim 1, wherein said first half and said second half are secured together by a pair of screws through said first and second transverse screw holes respectively.
- 3. The artistic knife as recited in claim 1, wherein said mortise can be increased in number and said head can turn on several different angles relative to said straight handle and enable the user to rotate the cutting head at different desired angles.
- 4. The artistic knife as recited in claim 1, wherein said first rectangular groove and said second rectangular groove are forming rectangular cavity in rear end of said straight handle for engaging a shank of a screwdriver.
US Referenced Citations (8)