Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having fluid channeling or entrapping configuration
Reexamination Certificate
2000-07-21
2001-06-26
Avila, Stephen (Department: 3617)
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having fluid channeling or entrapping configuration
C114S291000
Reexamination Certificate
active
06250246
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to boat hull designs and more particularly pertains to a new boat hull system for reducing the friction between the hull of a boat and water.
2. Description of the Prior Art
The use of boat hull designs is known in the prior art. More specifically, boat hull designs heretofore devised and utilized 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.
Known prior art includes U.S. Pat. No. 5,524,568; U.S. Pat. No. 4,393,802; U.S. Pat. No. 4,993,349; U.S. Pat. No. 3,937,173; U.S. Pat. No. 3,680,517; and U.S. Pat. No. 4,165,703.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new boat hull system. The inventive device includes a boat with a front and a rear. The boat has a hull with a forward portion towards the front that includes a width tapering smaller toward the front. Towards the rear of the boat there is a rearward portion of the hull that includes a substantially uniform width between the forward portion and the rear. Towards the front of the boat, the hull includes a lower surface with a keel ridge. The forward portion is substantially smooth between the keel ridge and a lateral side of the lower surface. The lower surface of the rearward portion includes a plurality of strake ridges extending substantially parallel to the keel ridge, and includes at least two strake ridges on each lateral side of the keel ridge. The adjacent strake ridges define a channel therebetween.
An air duct extends from the lower surface of the forward portion to the lower surface of the rearward portion for moving air between the forward and rearward portions. The air duct includes an entry opening in the lower surface of the forward portion and an exit opening in the lower surface of the rearward portion.
In these respects, the boat hull system according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of reducing the friction between boats and water.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of boat hull designs now present in the prior art, the present invention provides a new boat hull system construction wherein the same can be utilized for reducing the friction between boats and water.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new boat hull system apparatus and method which has many of the advantages of the boat hull designs mentioned heretofore and many novel features that result in a new boat hull system which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art boat hull designs, either alone or in any combination thereof.
To attain this, the present invention generally comprises a boat with a front and a rear. The boat has a hull with a forward portion towards the front that includes a width tapering smaller toward the front. Towards the rear of the boat the hull has a rearward portion that includes a substantially uniform width between the forward portion and the rear.
Towards the front of the boat, the hull includes a lower surface with a keel ridge. The forward portion is substantially smooth between the keel ridge and a lateral side of the lower surface. The lower surface of the rearward portion towards the back of the boat includes a plurality of strake ridges extending substantially parallel to the keel ridge, and includes at least two strake ridges on each lateral side of the keel ridge. The adjacent strake ridges define a channel therebetween. An air duct extends from the lower surface of the forward portion to the lower surface of the rearward portion for moving air between the forward and rearward portions. The air duct includes an entry opening in the lower surface of the forward portion and an exit opening in the lower surface of the rearward portion.
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 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.
Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
It is therefore an object of the present invention to provide a new boat hull system apparatus and method which has many of the advantages of the boat hull designs mentioned heretofore and many novel features that result in a new boat hull system which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art boat hull designs, either alone or in any combination thereof.
It is another object of the present invention to provide a new boat hull system which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new boat hull system which is of a durable and reliable construction.
An even further object of the present invention is to provide a new boat hull system 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 boat hull system economically available to the buying public.
Still yet another object of the present invention is to provide a new boat hull system which provides in the apparatuses and methods of the prior art some of the advantages thereof, while simultaneously overcoming some of the disadvantages normally associated therewith.
Still another object of the present invention is to provide a new boat hull system for reducing the friction between the hull of a boat and water.
Yet another object of the present invention is to provide a new boat hull system which includes a boat with an air duct that extends from the lower surface of the forward portion of the hull and the lower surface of the rearward portion of the hull for moving air between the forward and rearward portions.
Still yet another object of the present invention is to provide a new boat hull system that creates air pock
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