IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0299164
(2002-11-19)
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등록번호 |
US-7500699
(2009-03-10)
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발명자
/ 주소 |
- Snyder, Sr.,Ronald R.
- Wilk, Jr.,Charles E.
- Thau, Jr.,Lawrence W.
- Dole,Douglas R.
- Carom,Terrance M.
|
출원인 / 주소 |
|
대리인 / 주소 |
Synnestvedt & Lechner LLP
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인용정보 |
피인용 횟수 :
13 인용 특허 :
38 |
초록
▼
A coupling for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket and a first expanded region adjacent to the socket and a second expanded region adjacent to the first expanded region. A sealing member is positioned in the fi
A coupling for joining pipe segments together is disclosed. The coupling is derived from a standard fitting and has a housing with a socket and a first expanded region adjacent to the socket and a second expanded region adjacent to the first expanded region. A sealing member is positioned in the first expanded region, a retainer is positioned in the second expanded region and a support washer having transversely oriented radial and coaxial flanges is positioned adjacent to the retainer. A clamping tab turned inwardly on the second expanded region overlaps the radial flange and clamps the support washer and retainer against a shoulder within the second expanded region thereby also capturing the sealing member within the coupling. The retainer has a plurality of radial teeth angularly oriented to engage a pipe and prevent its removal from the coupling. The teeth are twisted about their longitudinal axes.
대표청구항
▼
What is claimed is: 1. A pipe coupling sealingly engageable with a pipe end, said pipe coupling comprising: a coupling housing having a socket with a diameter sized to receive and circumferentially support said pipe end; a first expanded region positioned adjacent to one end of said socket, said fi
What is claimed is: 1. A pipe coupling sealingly engageable with a pipe end, said pipe coupling comprising: a coupling housing having a socket with a diameter sized to receive and circumferentially support said pipe end; a first expanded region positioned adjacent to one end of said socket, said first expanded region having a larger diameter than said socket; a sealing member positioned in said first expanded region to effect a seal between said pipe coupling and said pipe end; a second expanded region positioned adjacent to said first expanded region, said second expanded region forming an open end of said coupling housing for receiving said pipe end, a shoulder being positioned between said first and second expanded regions; a retainer positioned within said second expanded region and being engageable circumferentially with said pipe end for retaining said pipe end within said pipe coupling, said retainer having a circumferential retainer flange; and a clamping tab attached to said coupling housing and positioned at said open end, said clamping tab extending substantially radially inwardly in spaced relation to said shoulder and being biased toward said shoulder and clamping said retainer flange between said clamping tab and said shoulder for holding said retainer within said coupling housing. 2. A pipe coupling housing according to claim 1, wherein said clamping tab comprises an annular lip extending circumferentially around said open end. 3. A pipe coupling housing according to claim 1, wherein said second expanded region has a larger diameter than said first expanded region. 4. A pipe coupling housing according to claim 1, further comprising a support washer positioned within said second expanded region for supporting said pipe end, said support washer having a substantially radially extending washer flange positioned between said retainer flange and one of said shoulder and said clamping tab, said washer flange and said retainer flange being clamped between said clamping tab and said shoulder for holding said retainer and said support washer within said second expanded region. 5. A pipe coupling according to claim 4, wherein said support washer has a radially inwardly facing surface having a diameter substantially equal to said socket diameter and coaxial therewith, said inwardly facing surface being circumferentially engageable with said pipe end upon insertion of said pipe end into said pipe coupling, said pipe end being supportable by said socket and said inwardly facing surface of said support washer. 6. A pipe coupling according to claim 5, wherein said support washer comprises a circumferential collar arranged transversely to said washer flange, said circumferential collar being substantially coaxial with said socket and forming said inwardly facing surface for supporting said pipe end. 7. A pipe coupling according to claim 6, wherein said circumferential collar extends outwardly from said open end of said coupling housing. 8. A pipe coupling according to claim 6, wherein said circumferential collar extends inwardly of said pipe coupling toward said retainer for providing support thereto. 9. A pipe coupling according to claim 6, wherein said circumferential collar extends outwardly from said open end of said coupling housing. 10. A pipe coupling according to claim 1, compatible with copper tubing having a nominal diameter between �� inch and 2 inches inclusive. 11. A pipe coupling according to claim 1, compatible with copper tubing having a diameter between 15 mm and 54 mm inclusive. 12. A pipe coupling according to claim 1, wherein said coupling comprises an elbow fitting. 13. A pipe coupling according to claim 1, wherein said sealing member comprises an elastomeric ring sized to be compressible between said second expanded region and said pipe end thereby effecting said seal. 14. A pipe coupling according to claim 1, wherein said retainer comprises a plurality of flexible, resilient, elongated teeth arranged circumferentially around said retainer flange, each of teeth projecting substantially radially inwardly from said retainer flange along a plurality of respective longitudinal axes angularly oriented toward said socket, each of said teeth being twisted angularly about their respective longitudinal axes, said teeth being engageable circumferentially with said pipe end for retaining said pipe end within said pipe coupling. 15. A pipe coupling according to claim 14, wherein each said tooth is twisted angularly about its longitudinal axis in a direction opposite that of its neighboring teeth. 16. A pipe coupling according to claim 14, wherein said support washer comprises a circumferential flange and a circumferential collar arranged transversely to said circumferential flange, said circumferential flange being oriented substantially radially and positioned between said retainer flange and said clamping tab, said circumferential collar being substantially coaxial with said socket and extending inwardly of said pipe coupling toward said socket, said circumferential collar supporting said teeth against deflection. 17. A pipe coupling according to claim 14, wherein said teeth have a predetermined length so as to interfit within a groove formed circumferentially around said pipe end when said pipe end engages said socket, said teeth being engageable with said groove to increase resistance to movement of said pipe outwardly from said coupling.
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