Patent US2395259A successfully refreshed from Google Patents.
US4699404A
Expired / Lapsed
US
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Flexible PVC coupling--"Flexfix"
Assignee: Individual
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Filing: 1986-09-08
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Granted: 1987-10-13
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Expires: 2006-09-08
Abstract
Abstract A flexible PVC coupling is provided and consists of combining two reinforced PVC couplers with a flexible high pressure tube which can be easily bent into any position when installing and repairing PVC pipes.
Inventors
- 👤 Wesley E. Drevs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:36
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/02; F16L27/00; F16L27/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A flexible PVC coupling comprising: (a) an elongated flexible high pressure tube formed of elastic material and capable of being bent into any desired configuration; (b) a pair of PVC couplers, each of said couplers partly inserted within ends of said tube; and (c) means for securing each of said couplers to each of said ends of said tube so that each of said couplers can be primed and glued to a PVC pipe wherein each of said PVC couplers has a reinforcement insert therein said insert having a cylindrical body and an annular flange and which is press fitted into an interior wall of said coupler with said flange abutting against one end of said coupler so that a portion of said coupler with said insert can be inserted within one end of said tube.
Claim 2
Dependent Claim
136 words
A flexible PVC coupling comprising: (a) an elongated flexible high pressure tube formed of elastic material and capable of being bent into any desired configuration; (b) a pair of PVC couplers, each of said couplers partly inserted within ends of said tube; and (c) means for securing each of said couplers to each of said ends of said tube so that each of said couplers can be primed and glued to a PVC pipe wherein each of said PVC couplers has a reinforcement insert therein said insert having a cylindrical body and an annular flange and which is press fitted into an interior wall of said coupler with said flange abutting against one end of said coupler so that a portion of said coupler with said insert can be inserted within one end of said tube.
Claim 3
Dependent Claim
44 words
A flexible PVC coupling as recited in claim 1, wherein inner diameter of said cylindrical body of said insert is almost of the same size as inner diameter of said coupler so as to form as nearly as possible a uniform inner diameter therethrough.
Claim 4
Dependent Claim
36 words
A flexible PVC coupling as recited in claim 2, wherein said securing means includes a pair of hose clamps, each of said hose clamps mounted over said ends of said tube to secure said couplers thereto.
Claim 5
Dependent Claim
17 words
A flexible PVC coupling as recited in claim 3, wherein said tube is fabricated out of rubber.
Claim 6
Dependent Claim
20 words
A flexible PVC coupling as recited in claim 4, wherein each of said inserts is fabricated out of stainless steel.
Claim 7
Dependent Claim
150 words
A flexible PVC coupling comprising: (a) an elongated flexible high pressure tube formed of elastic material and capable of being bent into any desired configuration; (b) a pair of PVC couplers, each of said couplers partly inserted within ends of said tube; and (c) means for securing each of said couplers to each of said ends of said tube so that each of said couplers can be primed and glued to a PVC pipe wherein each of said PVC couplers comprises: (i) a stepped interior wall extending about half way in from one end; and (ii) a reinforcement insert having a cylindrical body and an annular flange in which said cylindrical body is pressed fit into said stepped interior wall of said coupler with said flange abutting against said one end so that a portion of said coupler with said insert can be inserted within one end of said tube.
Claim 8
Dependent Claim
150 words
A flexible PVC coupling comprising: (a) an elongated flexible high pressure tube formed of elastic material and capable of being bent into any desired configuration; (b) a pair of PVC couplers, each of said couplers partly inserted within ends of said tube; and (c) means for securing each of said couplers to each of said ends of said tube so that each of said couplers can be primed and glued to a PVC pipe wherein each of said PVC couplers comprises: (i) a stepped interior wall extending about half way in from one end; and (ii) a reinforcement insert having a cylindrical body and an annular flange in which said cylindrical body is pressed fit into said stepped interior wall of said coupler with said flange abutting against said one end so that a portion of said coupler with said insert can be inserted within one end of said tube.
Claim 9
Dependent Claim
47 words
A flexible PVC coupling as recited in claim 6, wherein the inner diameter of said cylindrical body of said insert is of the same size as the inner diameter of said coupler adjacent to said stepped interior wall so as to form a uniform inner diameter therethrough.
Claim 10
Dependent Claim
36 words
A flexible PVC coupling as recited in claim 7, wherein said securing means includes a pair of hose clamps, each of said hose clamps mounted over said ends of said tube to secure said couplers thereto.
Claim 11
Dependent Claim
17 words
A flexible PVC coupling as recited in claim 7, wherein said tube is fabricated out of rubber.
Claim 12
Dependent Claim
20 words
A flexible PVC coupling as recited in claim 9, wherein each of said inserts is fabricated out of stainless steel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |