Cutlery – Cutting tools – Plural cooperating blades
Reexamination Certificate
2001-05-11
2002-05-14
Watts, Douglas D. (Department: 3724)
Cutlery
Cutting tools
Plural cooperating blades
C030S254000
Reexamination Certificate
active
06385851
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a pair of hairdressing scissors for cutting small amount of hair or special shape.
2. Description of the Related Art
FIG. 9
of the drawings illustrates a pair of conventional hairdressing scissors which includes two scissor elements
3
a
and
3
b
pivotally connected together. The scissor element
3
a
includes a blade portion
36
with a plurality of wide teeth
32
that are spaced by larger interval
34
. The hair amount cut by a pair of scissors is decided by the overall widths of all of the teeth
32
, and the pair of scissors in
FIG. 9
may cut about 50% of hair that is held between and thus cut by two blade portions
36
and
38
.
FIG. 10
of the drawings illustrates another pair of conventional hairdressing scissors which includes two scissor elements
4
a
and
4
b
pivotally connected together. The scissor element
4
a
includes a blade portion
46
with a plurality of narrow teeth
42
that are spaced by smaller interval
44
. Such a pair of scissors may cut about 50% of hair that is held between and thus cut by two blade portions
46
and
48
.
FIG. 11
of the drawings illustrates a further pair of conventional hairdressing scissors which includes two scissor elements
5
a
and
5
b
pivotally connected together. The scissor element
5
a
includes a blade portion
56
with a first set of spaced wide teeth
52
and a plurality of second sets of narrow teeth
53
, each second set of narrow teeth
53
being arranged between two adjacent wide teeth
52
. Such a pair of scissors may cut about 80% of hair that is held between and thus cut by two blade portions
56
and
58
.
FIG. 12
of the drawings illustrates still another pair of conventional hairdressing scissors which includes two scissor elements
6
a
and
6
b
pivotally connected together. The scissor element
6
a
includes a blade portion
66
with a plurality of medium-sized teeth
62
that are spaced by medium-sized interval
64
, each tooth
62
having a V-shape groove
65
in a distal end thereof. Such a pair of scissors may cut about 60% of hair that is held between and thus cut by two blade portions
66
and
68
.
Each of the teeth
32
,
42
,
52
,
53
,
63
of the scissors shown in
FIGS. 9 through 12
include a single guide face
37
,
47
,
57
,
67
on a side thereof that faces the blade portion
38
,
48
,
58
,
68
the scissor element,
3
b
,
4
b
,
5
b
,
6
b
for guiding the blade portion
38
,
48
,
58
,
68
of the scissor element,
3
b
,
4
b
,
5
b
,
6
b
to be in intimate contact with the blade portion
36
,
46
,
56
,
66
, of the scissor element
3
a
,
4
a
,
5
a
,
6
a
, thereby achieving the required cutting function. Nevertheless, in some cases it is required to cut hair by small amount or cut into special style wherein some hair must be supported by its surrounding hair to exhibit a swollen or high-rise style. None of the above scissors can provide such a function.
The present invention is intended to provide a pair of scissors to meet this end.
SUMMARY OF THE INVENTION
It is the primary object of the present invention to provide a pair of hairdressing scissors for cutting small amount of hair or special style.
In accordance with the present invention, a pair of hairdressing scissors comprises first and second scissor elements pivotally connected together, each said scissor element including a blade portion. The blade portion of the second scissor element having a cutting edge. The blade portion of the first scissor element includes a plurality of teeth that are spaced by an interval.
Each tooth on the second scissor element includes a distal end having a first side that faces the cutting edge of the first scissor element and a second side that faces away from the cutting edge. The first side of the distal end of each tooth includes a distal first guide face and a second guide face extended from the distal first guide face. The distal first guide face has a slope smaller than that of the second guide face. The second guide face includes a cutting edge that cooperates with the cutting edge of the second scissor element for cutting hair.
A distal beveled face and a third guide face are formed between the first side and the second side of the distal end. The distal beveled face guides hair to be cut. The guide face meets the first side at the cutting edge. The third guide face is provided to guide hair that is cut down from the head.
In an embodiment of the invention, the distal end of each tooth includes a truncated tip for cutting hair. The third guide face includes a serrated surface with a plurality of channels for holding the hair to be cut during cutting.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 291591 (1884-01-01), Gorton
patent: 799617 (1905-09-01), Steffa
patent: 2574066 (1951-11-01), See
patent: 3676930 (1972-07-01), Robinson et al.
patent: 4170064 (1979-10-01), Senk
patent: 4422240 (1983-12-01), Wallace et al.
patent: 4660285 (1987-04-01), Pracht
patent: 5107591 (1992-04-01), Sato
patent: 4000927 (1991-01-01), None
patent: 2153732 (1985-08-01), None
Kamrath Alan
Rider Bennett Egan & Arundel LLP
Watts Douglas D.
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