Ventilation – Chimney or stack – Chimneytop or stacktop structure
Reexamination Certificate
1999-02-11
2001-01-30
Ferensic, Denise L. (Department: 3749)
Ventilation
Chimney or stack
Chimneytop or stacktop structure
Reexamination Certificate
active
06179705
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to roof vent covers and more particularly pertains to a new accessory for a combustion device such as a swimming pool heater for preventing downdrafting and allowing for proper ventilation.
2. Description of the Prior Art
The use of roof vent covers is known in the prior art. More specifically, roof vent covers 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 roof vent covers include U. S. Pat. No. 4,580,548 to Ono; U.S. Pat. No. 5,005,328 to Holtgreve; U.S. Pat. No. 5,081,914 to Mejia; U.S. Pat. No. 4,759,270 to Lindeen; U.S. Pat. No. 5,402,611 to Vagedes; and U.S. Pat. No. Des. 277,028 to Waltz et al.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a combustion device such as a new accessory for combustion devices such as a swimming pool heater. The inventive device includes a vertically disposed pipe extending upwardly from a combustion device such as a swimming pool heater. The pipe has a generally cylindrical configuration. The pipe has an open upper end. The open upper end has a plurality of circumferentially spaced brackets extending upwardly therefrom. Upper ends of the brackets have an upper pipe extending upwardly therefrom. The upper pipe has open upper and lower ends. The open upper end of the upper pipe has a plurality of circumferentially spaced brackets extending outwardly therefrom. A draft hood is secured to the brackets of the vertically disposed pipe downwardly of the upper ends thereof. A vent cap is removably secured to upper ends of the brackets of the upper pipe.
In these respects, the accessory for combustion devices such as swimming pool heaters 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 preventing downdrafting and allowing for proper ventilation.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of roof vent covers now present in the prior art, the present invention provides a new accessory for combustion devices such as swimming pool heaters construction wherein the same can be utilized for preventing downdrafting and allowing for proper ventilation.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new accessory for combustion devices such as swimming pool heaters apparatus and method which has many of the advantages of the roof vent covers mentioned heretofore and many novel features that result in a new accessory for combustion devices such as swimming pool heaters which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art roof vent covers, either alone or in any combination thereof.
To attain this, the present invention generally comprises a vertically disposed pipe extending upwardly from a combustion device. The pipe has a generally cylindrical configuration. The pipe has an open upper end. The open upper end has a plurality of circumferentially spaced brackets extending upwardly therefrom. Upper ends of the brackets have an upper pipe extending upwardly therefrom. The upper pipe has open upper and lower ends. The open upper end of the upper pipe has a plurality of circumferentially spaced brackets extending outwardly therefrom. A draft hood is secured to the brackets of the vertically disposed pipe downwardly of the upper ends thereof. The draft hood includes a cylindrical body portion positioned over the vertically disposed pipe. The cylindrical body portion includes a tapered neck portion extending upwardly therefrom. An upper end of the tapered neck portion is secured to the bracket. A conical flange is secured around the upper pipe at a central portion thereof. A vent cap is removably secured to upper ends of the brackets of the upper pipe. The vent cap is disposed over the open upper end of the upper pipe. The vent cap has a generally dome shape.
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 accessory for combustion devices such as swimming pool heaters apparatus and method which has many of the advantages of the roof vent covers mentioned heretofore and many novel features that result in a new accessory for combustion devices such as swimming pool heaters which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art roof vent covers, either alone or in any combination thereof.
It is another object of the present invention to provide a new accessory for combustion devices such as swimming pool heaters which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new accessory for combustion devices such as swimming pool heaters which is of a durable and reliable construction.
An even further object of the present invention is to provide a new accessory for combustion devices such as swimming pool heaters 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 accessory for combustion devices such as swimming pool heaters economically available to the buying public.
Still yet another object of the present invention is to provide a new accessory for combustion devices such as swimming pool heaters 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 accessory for combustion devices such as swimming pool heaters for preventing downdrafting
Ferensic Denise L.
Joyce Andrea M.
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