IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0451758
(2006-06-13)
|
등록번호 |
US-7597361
(2009-10-20)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
5 |
초록
▼
A bulkhead fitting which may be used on either six inch or eight inch diameter irrigation pipes through the use of an interchangeable base ring. The fitting includes a stem fitting having an interchangeable base ring mounted thereon which is extended upwardly through an outlet opening in an irrigat
A bulkhead fitting which may be used on either six inch or eight inch diameter irrigation pipes through the use of an interchangeable base ring. The fitting includes a stem fitting having an interchangeable base ring mounted thereon which is extended upwardly through an outlet opening in an irrigation pipe. An upper washer is mounted on the stem portion of the stem fitting and is maintained thereon through the use of a nut which is threadably mounted on the upper end of the stem fitting. A locking mechanism is provided which prevents the inadvertent loosening of the nut with respect to the stem fitting.
대표청구항
▼
I claim: 1. In combination with a tubular irrigation pipe having a first predetermined inside diameter, an outer surface, a plastic lined inner surface, and at least one outlet opening formed therein, comprising: a hollow stem fitting including a disc-shaped base portion and a stem portion extendin
I claim: 1. In combination with a tubular irrigation pipe having a first predetermined inside diameter, an outer surface, a plastic lined inner surface, and at least one outlet opening formed therein, comprising: a hollow stem fitting including a disc-shaped base portion and a stem portion extending upwardly therefrom; said stem fitting having a central opening extending therethrough; said stem portion having an outside diameter which is less than the diameter of said base portion; said disc-shaped base portion having an upper face extending around said stem portion; said stem portion having an upper end; said base portion having a diameter which is greater than the diameter of the outlet opening; said stem portion having an externally threaded portion and an internally threaded portion; a ring-shaped base ring, having lower and upper faces, removably positioned on said base portion of said stem fitting; said lower face of said base ring being complementary to said upper face of said base portion; said upper face of said base ring being complementary to the inner surface of the pipe of first predetermined diameter; said upper face of said base ring having a recessed area formed therein; a seal washer positioned in said recessed area of said base ring; said hollow stem fitting being positioned in the outlet opening so that said base portion, said base ring and said seal washer are positioned within the pipe with said stem fitting extending upwardly and outwardly through the outlet opening; a generally ring-shaped upper washer mounted on said stem portion outwardly of the pipe and having lower and upper faces; said lower face of said upper washer being complementary to the outer surface of the pipe; said upper face of said upper washer being generally flat; a nut threadably mounted on said externally threaded portion of said stem portion to sealably and physically maintain said hollow stem fitting on the pipe and so that sprinkler plumbing may be threadably received by said internally threaded portion of said stem portion; said nut and said upper washer have cooperating nut locking means thereon. 2. The combination of claim 1 wherein said nut locking means prevents said nut from inadvertently threadably loosening with respect to said stem portion. 3. In combination with a tubular irrigation pipe having a first predetermined inside diameter, an outer surface, a plastic lined inner surface, and at least one outlet opening formed therein, comprising: a hollow stem fitting including a disc-shaped base portion and a stem portion extending upwardly therefrom; said stem fitting having a central opening extending therethrough; said stem portion having an outside diameter which is less than the diameter of said base portion; said disc-shaped base portion having an upper face extending around said stem portion; said stem portion having an upper end; said base portion having a diameter which is greater than the diameter of the outlet opening; said stem portion having an externally threaded portion and an internally threaded portion; a ring-shaped base ring, having lower and upper faces, removably positioned on said base portion of said stem fitting; said lower face of said base ring being complementary to said upper face of said base portion; said upper face of said base ring being complementary to the inner surface of the pipe of first predetermined diameter; said upper face of said base ring having a recessed area formed therein; a seal washer positioned in said recessed area of said base ring; said hollow stem fitting being positioned in the outlet opening so that said base portion, said base ring and said seal washer are positioned within the pipe with said stem fitting extending upwardly and outwardly through the outlet opening; a generally ring-shaped upper washer mounted on said stem portion outwardly of the pipe and having lower and upper faces; said lower face of said upper washer being complementary to the outer surface of the pipe; said upper face of said upper washer being generally flat; a nut threadably mounted on said externally threaded portion of said stem portion to sealably and physically maintain said hollow stem fitting on the pipe and so that sprinkler plumbing may be threadably received by said internally threaded portion of said stem portion; said upper washer including at least one resilient locking member which normally protrudes from said upper face thereof and which is movable between its normal protruding position to a retracted position; said nut including a locking mechanism which is engageable with said locking member of said upper washer, when said locking member of said upper washer is in its protruding position, to prevent said nut from threadably loosening on said externally threaded portion of said stem fitting. 4. The combination of claim 3 wherein said upper washer includes at least two spaced-apart locking members. 5. The combination of claim 3 wherein said nut includes a plurality of spaced-apart locking mechanisms. 6. The combination of claim 3 wherein said locking mechanism on said nut comprises a lug having an arcuate leading side and a flat trailing side. 7. The combination of claim 6 wherein said arcuate leading side permits said lug to move past said locking member on said upper washer during the threadable tightening of said nut on said stem fitting and wherein said flat side of said lug engages said locking member of said upper washer to prevent the threadable loosening of said nut with respect to said stem fitting. 8. In combination with a tubular irrigation pipe having a first predetermined inside diameter, an outer surface, a plastic lined inner surface, and at least one outlet opening formed therein, comprising: a hollow stem fitting including a disc-shaped base portion and a stem portion extending upwardly therefrom; said stem fitting having a central opening extending therethrough; said stem portion having an outside diameter which is less than the diameter of said base portion; said disc-shaped base portion having an upper face extending around said stem portion; said stem portion having an upper end; said base portion having a diameter which is greater than the diameter of the outlet opening; said stem portion having an externally threaded portion and an internally threaded portion; a ring-shaped base ring, having lower and upper faces, removably positioned on said base portion of said stem fitting; said lower face of said base ring being complementary to said upper face of said base portion; said upper face of said base ring being complementary to the inner surface of the pipe of first predetermined diameter; said upper face of said base ring having a recessed area formed therein; a seal washer positioned in said recessed area of said base ring; said hollow stem fitting being positioned in the outlet opening so that said base portion, said base ring and said seal washer are positioned within the pipe with said stem fitting extending upwardly and outwardly through the outlet opening; a generally ring-shaped upper washer mounted on said stem portion outwardly of the pipe and having lower and upper faces; said lower face of said upper washer being complementary to the outer surface of the pipe; said upper face of said upper washer being generally flat; a nut threadably mounted on said externally threaded portion of said stem portion to sealably and physically maintain said hollow stem fitting on the pipe and so that sprinkler plumbing may be threadably received by said internally threaded portion of said stem portion; said base portion having at least one protrusion extending laterally therefrom which is receivable by a recessed portion in said lower face of said base ring to provide timing between said stem fitting and said base ring. 9. In combination with a tubular irrigation pipe having a first predetermined inside diameter, an outer surface, a plastic lined inner surface, and at least one outlet opening formed therein, comprising: a hollow stem fitting including a disc-shaped base portion and a stem portion extending upwardly therefrom; said stem fitting having a central opening extending therethrough; said stem portion having an outside diameter which is less than the diameter of said base portion; said disc-shaped base portion having an upper face extending around said stem portion; said stem portion having an upper end; said base portion having a diameter which is greater than the diameter of the outlet opening; said stem portion having an externally threaded portion and an internally threaded portion; a ring-shaped base ring, having lower and upper faces, removably positioned on said base portion of said stem fitting; said lower face of said base ring being complementary to said upper face of said base portion; said upper face of said base ring being complementary to the inner surface of the pipe of first predetermined diameter; said upper face of said base ring having a recessed area formed therein; a seal washer positioned in said recessed area of said base ring; said hollow stem fitting being positioned in the outlet opening so that said base portion, said base ring and said seal washer are positioned within the pipe with said stem fitting extending upwardly and outwardly through the outlet opening; a generally ring-shaped upper washer mounted on said stem portion outwardly of the pipe and having lower and upper faces; said lower face of said upper washer being complementary to the outer surface of the pipe; said upper face of said upper washer being generally flat; a nut threadably mounted on said externally threaded portion of said stem portion to sealably and physically maintain said hollow stem fitting on the pipe and so that sprinkler plumbing may be threadably received by said internally threaded portion of said stem portion; said stem portions having at least one flat surface formed on the exterior surface thereof which receives a key surface on said upper washer to align said stem fitting with said upper washer. 10. In combination with a tubular irrigation pipe having a first predetermined inside diameter, an outer surface, a plastic lined inner surface, and at least one outlet opening formed therein, comprising: a hollow stem fitting including a disc-shaped base portion and a stem portion extending upwardly therefrom; said stem fitting having a central opening extending therethrough; said stem portion having an outside diameter which is less than the diameter of said base portion; said disc-shaped base portion having an upper face extending around said stem portion; said stem portion having an upper end; said base portion having a diameter which is greater than the diameter of the outlet opening; said stem portion having an externally threaded portion and an internally threaded portion; a ring-shaped base ring, having lower and upper faces, removably positioned on said base portion of said stem fitting; said lower face of said base ring being complementary to said upper face of said base portion; said upper face of said base ring being complementary to the inner surface of the pipe of first predetermined diameter; said upper face of said base ring having a recessed area formed therein; a seal washer positioned in said recessed area of said base ring; said hollow stem fitting being positioned in the outlet opening so that said base portion, said base ring and said seal washer are positioned within the pipe with said stem fitting extending upwardly and outwardly through the outlet opening; a generally ring-shaped upper washer mounted on said stem portion outwardly of the pipe and having lower and upper faces; said lower face of said upper washer being complementary to the outer surface of the pipe; said upper face of said upper washer being generally flat; a nut threadably mounted on said externally threaded portion of said stem portion to sealably and physically maintain said hollow stem fitting on the pipe and so that sprinkler plumbing may be threadably received by said internally threaded portion of said stem portion; said base portion having at least one locking notch formed therein which is adapted to receive a locking tab on said base ring to removably lock said base ring to said base portion. 11. The combination of claim 10 wherein said base portion has at least one locking notch formed therein which is adapted to receive a locking tab on said base ring to removably lock said base ring to said base portion.
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