The following brief description of the figures, and the related figures themselves, exemplifies a particular preferred embodiment of the invention constituting the best mode presently contemplated. As will be understood, other embodiments of the invention as well as changes and variations in the particular structure shown in these figures are no doubt possible, and may very well suggest themselves to those skilled in the art after studying this disclosure and these figures.
For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the invention as orientated in
The reference number 20 (
In the illustrated embodiment, the gas delivery system 22 includes the inlet hose 26 connected to the regulator 24 for accepting the gas from the source of gas. The inlet hose 26 is preferably made out of high or low pressure thermoplastic material, although other materials are contemplated. The inlet hose 26 includes a first end 34 configured to be connected to the regulator 24 and a second end 36 configured to be connected to the manifold 28. The first end 34 can have any connection that will allow the inlet hose 26 to be connected to the regulator 24. In the illustrated example, the second end 36 includes a threaded barb (integrally cast or connected to the end) for connection to the manifold 28.
The illustrated manifold 28 supplies gas from the inlet hose 26 to the plurality of supply hoses 30. The manifold 28 can be made from aluminum die casting, zinc die casting, plastic injection molding or in any other method using any material as approved by the cognizant regulatory authority. The manifold 28 includes an inlet connection 38 connected to the inlet hose 26 and a plurality of outlet connections 40 configured to be connected to the supply hoses 30. The illustrated inlet connection 38 is internally threaded to accept the threaded barb of the second end 36 of the inlet hose 26 for connecting the inlet hose 26 to the manifold 28. Furthermore, the manifold 28 can include an excess flow device for preventing excess flow of the gas into the manifold 28 or through the manifold 28 and to the supply hoses 30. For example, the manifold 28 could include the excess flow device disclosed in U.S. patent application Ser. No. 11/338,490 entitled COMBINATION EXCESS-FLOW/BACK-FLOW VALVE, the entire contents of which are hereby incorporated herein by reference. The outlet connections 40 of the present embodiment are also internally threaded. It is also contemplated that the manifold 28 could include a grounding hole 71. The grounding hole 71 is configured to have a copper wire (or other conductive wire) connected thereto (e.g., by a screw), with the other end of the copper wire connected to a metallic frame or other grounded item. The copper wire would help to ground the manifold 28, thereby dissipating any charge that may develop within the manifold 28 and that could be transferred to a metallic manifold. While the grounding hole 71 is shown as being on a projection of the manifold 28, it is contemplated that the grounding hole 71 could be located anywhere on the manifold 28 and could have any shape or size.
In the illustrated example, the supply hoses 30 are connected to the manifold 28 and are configured to supply gas from the manifold 28 to the appliances 32. The supply hoses 30 are preferably made out of high or low pressure thermoplastic material, although other materials are contemplated. The supply hoses 30 include a first end 42 connected to the outlet connections 40 of the manifold 28 and a second end 44 connected to the appliances 32. Grommets may be used to protect any of the hoses that pass through or are adjacent sharp objects that may interfere with a hose as required by nationally recognized installation codes. In the illustrated embodiment, the first end 42 includes a threaded barb on an end thereof for insertion into the internally threaded outlet connections 40 of the manifold 28 to connect the supply hoses 30 to the manifold 28. The supply hoses 30 can be of the same size or can have a different size from at least one of the other supply hoses 30 to allow the supply hoses 30 to have different flow rates. Furthermore, the size, position and number of the outlet connections 40 can be changed as desired.
The reference numeral 22a (
The reference numeral 22b (
Accordingly, the gas delivery system of the present invention allows a user of a recreational vehicle or other apparatus using the gas delivery system to customize the entire system according to the delivery requirements for each appliance and for the overall recreational vehicle gas needs. For example, if an appliance only requires 2,000 BTU/hour, the gas delivery system of the present invention can utilize small diameter hoses to accommodate this reduced demand. Conversely, if the appliance requires a higher BTU capacity, a larger hose can be used. Additionally, if a hose is replaced after the initial installation, an aspect of the present invention allows for removal and replacement of the old system and installation of the system of the present invention. Furthermore, all of the hose or manifold connections outlined above can use any of the connections (e.g., threaded barbs, SAE male/female connectors, integrally cast barbs, barb connectors, internal threads for barbs or threaded hoses, molded in metal connectors, etc.) either on the hoses or the manifolds (using the same connectors or different connectors in one gas delivery system).
The foregoing detailed description is considered that of a preferred embodiment only, and the particular shape and nature of at least some of the components in this embodiment are at least partially based on manufacturing advantages and considerations as well as on those pertaining to assembly and operation. Modifications of this embodiment may well occur to those skilled in the art and to those who make or use the invention after learning the nature of this preferred embodiment, and the invention lends itself advantageously to such modification and alternative embodiments. Therefore, is to be understood that variations and modifications can be made on the aforementioned structure without departing from the concepts of the present invention, and further it is to be understood that such concepts are intended to be covered by the following claims unless these claims by their language expressly state otherwise.
This application claims priority to U.S. Provisional Application No. 60/822,257 filed on Aug. 14, 2006 and entitled GAS DELIVERY SYSTEM.
Number | Date | Country | |
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60822257 | Aug 2006 | US |