Cutlery – Cutting tools – Plural cooperating blades
Reexamination Certificate
2000-03-31
2001-10-30
Payer, Hwei-Slu (Department: 3724)
Cutlery
Cutting tools
Plural cooperating blades
C030S179000, C030S229000, C030S233000, C030S293000
Reexamination Certificate
active
06308421
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a multi-use scissors which can be conveniently used with less strength. Different blade sheaths can be quickly replaced for cutting, different types of work pieces.
FIGS. 8 and 9
show a conventional multi-use scissors composed of a first grip
91
and a second grip
92
which are pivotally connected with each other. The front end of the first grip
91
is formed with a clamp section
93
. The front end of the second grip
92
is formed with a blade section
94
. Different types of blade sheaths
95
,
97
can be fitted with the clamp section
93
. A fixing, pin
96
is passed through the clamp section
93
and the blade sheath
95
,
97
for fixing, the same. The blade sheath
95
is in a form of blade channel formed with a notch
951
, while the blade sheath
97
has a form of cutting board.
Such multi-use scissors is mostly used to scissor a tubular article, plate-like article or carpet. It is laborious to scissor these articles with the multi-use scissors.. Moreover, the different types of blade sheaths
95
,
97
must be respectively stored and used so that the blade sheaths
95
,
97
tend to miss.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide a multi-use scissors in which the distance between the pivot section connecting the blade bar with the first grip and the pivot section connecting the blade bar with the link is larger than the distance between the pivot section connecting the second grip with the first grip and the pivot section connecting the second grip with the link. Accordingly, the tightly holding force exerted onto the first and second grips by a user will create double lever effect so as to save strength. The top and bottom faces of the blade sheath unit are integrally formed with two kinds of blade sheaths, whereby the blade bar can be co-used with the different blade sheaths to cut different configurations of work pieces.
According to the above object, the multi-use scissors of the present invention includes:
a first grip having a forward extending hollow clamp section at front end, a middle portion of the clamp section being formed with a fixing hole for a fixing pin to insert therein;
a second grip, a front end of the second grip being pivotally disposed on the middle section of the first grip;
a blade bar, a middle section of the blade bar being pivotally disposed on the middle section of the first grip between the first. and second grips, the front section of the blade bar being a blade section, a rear end of the blade bar being pivotally connected with a link, the other end of the link being pivotally disposed on the second grip near the pivot section connecting the second grip with the first grip, the distance between the pivot section connecting the blade bar with the first grip and the pivot section connecting the blade bar with the link being larger than the distance between the pivot section connecting the second grip with the first grip and the pivot section connecting the second grip with the link; and
a blade sheath unit having a main body, two sides of a middle section of the main body being respectively formed with two receiving cavities complementary to the clamp section for the clamp section to fit therein, the main body being formed with a through hole corresponding to the fixing hole of the clamp section for the fixing pin to pass therethrough, a top and a bottom faces of the main body being respectively formed with a first and a second blade sheaths, the first and second blade sheaths being respectively formed with two shoulder sections on the top and bottom edges of the receiving cavities for the clamp section to lean against.
The present invention can be best understood through the following description and accompanying drawings wherein:
REFERENCES:
patent: 4106195 (1978-08-01), Berg
patent: 5542182 (1996-08-01), Martinez
patent: 5673487 (1997-10-01), Malagonoux
patent: 5913575 (1999-06-01), Lai
patent: 6145203 (2000-11-01), Appleman
Payer Hwei-Slu
Rosenberg , Klein & Lee
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