Cutlery – Cutting tools – Plural cooperating blades
Reexamination Certificate
2001-08-20
2002-08-20
Watts, Douglas D. (Department: 3724)
Cutlery
Cutting tools
Plural cooperating blades
C030S254000
Reexamination Certificate
active
06434833
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a hairdressing scissor assembly comprising plural pairs of scissors that are detachably engaged together for hairdressing purpose.
2. Description of the Related Art
A hairstylist cuts a customer's hair with several techniques, including trimming, thinning, layering, etc. Sometimes the hairstylist has to hold plural pairs of scissors in the same hand for proceeding with the thinning or layering of the hair to obtain the desired special hairstyle.
During operation of the plural pairs of scissors in the same hand, the user must keep the plural pairs of scissors be spaced at regular intervals and operate them with the same operating condition. The plural pairs of scissors must open and close synchronously to obtain a tidy, beautiful hairstyle. However, the plural pairs of scissors are simply held by the index finger and the thumb of the user such that the plural pairs of scissors cannot be operated synchronously due to touchy control of the plural pairs of scissors by the fingers. Thus, the plural pairs of scissors often become skew to one another and the spacing therebetween may be different from one another. The haircutting result is adversely affected, and this problem is aggravated if the user is inexperienced. The user often feels pain when operating the plural pairs of scissors in addition to numerous limitations to and difficulties in operation.
U.S. Pat. No. 6,192,590 to Applicant issued on Feb. 27, 2001 and Applicant's U.S. patent application Ser. No. 09/617,713 disclose hairdressing scissor assemblies to solve the above-mentioned problems. However, formation of the L-shaped engaging member and the L-shaped slot of the connecting block for connecting the plural pairs of scissors is troublesome and costly.
SUMMARY OF THE INVENTION
A hairdressing scissor assembly in accordance with the present invention comprises plural pairs of hairdressing scissors. Each pair of hairdressing scissors in accordance with comprises:
a first cutting member and a second cutting member pivotally connected together, the first cutting member comprising a first handle at a first end thereof and a first blade at a second end thereof, the second cutting member comprising a second handle at a first end thereof and a second blade at a second end thereof, the first handle comprising a first side and a second side, at least one first positioning hole being defined in the first side of the first handle, the second handle comprising a first side and a second side, at least one second positioning hole being defined in the first side of the second handle;
at least one first engaging member secured to the second side of the first handle, said at least one first engaging member comprising an end; and
at least one second engaging member secured to the second side of the second handle, said at least one second engaging member comprising an end;
the end of said at least one first engaging member of one said pair of hairdressing scissors being releasably force fitted into said at least one first positioning hole of another said pair of hairdressing scissors;
the end of said at least one second engaging member of one said pair of hairdressing scissors being releasably force fitted into said at least one second positioning hole of another said pair of hairdressing scissors.
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: 2002/0020067 (2002-02-01), Silver
Alan Kamrath Rider Bennett, Egan & Arundel, LLP
Watts Douglas D.
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