Cutlery – Blades – Edge structure
Reexamination Certificate
2000-02-11
2001-07-17
Rachuba, M. (Department: 3724)
Cutlery
Blades
Edge structure
C030S346530, C030S349000, C030S351000
Reexamination Certificate
active
06260280
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a knife with ceramic blade and more particularly pertains to providing a superior cutting instrument with a surrounding support structure.
Recent attempts at knife design have made use of ceramic blades which are sharper and more abrasive and wear-resistant than any other material used to make cutlery. Ceramic is totally corrosion-resistant, non-conducting, and does not have a magnetic signature. Unfortunately, ceramic is extremely brittle due to its hardness and crystalline structure. Ceramic blades will break or chip when flexed or dropped on a hard surface. Unless the cutting with a ceramic blade is taking place in a controlled environment, a broken blade is the likely result. Because field use of a knife can be very unpredictable and is usually very stressful on a knife blade, a ceramic blade for field use has been unachievable.
What is needed is a ceramic blade that can be utilized for all purposes, including field use. The present invention attempts to provide a solution to the abovementioned problems by providing a ceramic blade with a support structure that will prevent the blade from breaking while under stress.
The use of cutting tools is known in the prior art. More specifically, cutting tools heretofore devised and utilized for the purpose of cutting objects are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which have been developed for the fulfillment of countless objectives and requirements.
By way of example, U.S. Pat. No. 4,689,242 to Pike discloses a method for adhesion of grit to blade tips. U.S. Pat. No. 4,963,061 to Katbi et al. discloses a ceramic cutting insert. U.S. Pat. No. 4,862,890 to Stasz et al. discloses an electro surgical spatula blade with ceramic substrate. U.S. Pat. No. 5,863,329 to Yamanouchi discloses a ceramic composite doctor blade. U.S. Pat. No. 4,211,006 to Halaby et al. discloses a guarded razor blade. U.S. Pat. No. 2,686,439 to Tobert discloses a method of making cutting tools. U.S. Pat. No. 5,048,191 to Hahn discloses razor blade technology.
While these devices fulfill their respective, particular objective and requirements, the aforementioned patents do not describe a knife with ceramic blade for providing a superior cutting instrument with a surrounding support structure.
In this respect, the knife with ceramic blade according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of providing a superior cutting instrument with a surrounding support structure.
Therefore, it can be appreciated that there exists a continuing need for a new and improved knife with ceramic blade which can be used for providing a superior cutting instrument with a surrounding support structure. In this regard, the present invention substantially fulfills this need.
SUMMARY OF THE INVENTION
In the view of the foregoing disadvantages inherent in the known types of cutting tools now present in the prior art, the present invention provides an improved knife with ceramic blade. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved knife with ceramic blade which has all the advantages of the prior art and none of the disadvantages.
To attain this, the present invention essentially comprises an elongated body portion having a generally rectangular upper portion. The upper portion has a lower end. The lower end has a generally triangular lower portion extending downwardly therefrom. The lower portion has a lower end forming an apex. The apex has a channel formed therein extending a length of the body portion. A plurality of ceramic blades are provided that each have an elongated vertical upper segment and a lower cutting edge. The elongated vertical upper segment of each ceramic blade is received within the channel formed in the apex of the lower portion of the elongated body portion. The ceramic blades each have a slight space disposed between one another. Each vertical upper segment has a pair of apertures therethrough.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
It is therefore an object of the present invention to provide a new and improved knife with ceramic blade which has all the advantages of the prior art cutting tools and none of the disadvantages.
It is another object of the present invention to provide a new and improved knife with ceramic blade which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new and improved knife with ceramic blade which is of durable and reliable construction.
An even further object of the present invention is to provide a new and improved knife with ceramic blade which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such a knife with ceramic blade economically available to the buying public.
Even still another object of the present invention is to provide a new and improved knife with ceramic blade for providing a superior cutting instrument with a surrounding support structure.
Lastly, it is an object of the present invention to provide a new and improved knife with ceramic blade including a body portion having a lower end. The lower end has a generally triangular lower portion extending downwardly therefrom. The lower portion has a lower end forming an apex. The apex has a channel formed therein extending a length of the body portion. A plurality of ceramic blades are provided that each have an elongated vertical upper segment and a lower cutting edge. The elongated vertical upper segment of each ceramic blade is received within the channel formed in the apex of the lower portion of the elongated body portion.
These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated preferred embodiments of the invention.
REFERENCES:
patent: 2688439 (1954-08-01), Tobert
patent: 3543402 (1970-12-01), Seager
patent: 3834265 (1974-09-01), Tafapolsky et al.
patent: 4211006 (1980-07-01), Halaby e
Goldstein Law Offices P.C
Pryor Sean
Rachuba M.
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