US3712647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe connection
Assignee: Goetzewerke Friedrich Goetze AG
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Filing: 1970-11-24
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Granted: 1973-01-23
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Expires: 1990-11-24
Abstract
Abstract A releasable pipe connection has a pair of pipe ends engaging in one another so that one pipe end acts as a sleeve for the other pipe end. Once together, the pipe ends define a wedge-shaped groove. An annular helical coiled spring is arranged in the groove so as to serve as a clamping ring, and a flange ring is fastened to the one part and acts as a sleeve to clamp the helical coiled spring in the groove. The coils of the helical coiled spring may have circular or non-circular cross sections, and may be used in conjenction with a separate sealing ring, or may serve as a combination sealing and clamping ring by being provided with at least a partial jacket constructed from a suitable material.
Inventors
- 👤 F Stecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:10
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/06; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/127; F16L21/00; F16L21/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
A releasable pipe connection comprising a pair of pipe ends engaging in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing means disposed on said coiled spring, said sealing means being constructed of metal and having a C-shaped cross section when unbiased and which at least partially encloses the coils of said helical coiled spring, and means for clamping said helical coiled spring and said sealing means in said wedge-shaped groove and against the surfaces of said pipe ends together by means of the contact pressure between said helical coiled spring, said sealing means, and said pipe ends.
Claim 2
Dependent Claim
141 words
A releasable pipe connection comprising a pair of pipe ends engaging in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing means disposed on said coiled spring, said sealing means being constructed of metal and having a C-shaped cross section when unbiased and which at least partially encloses the coils of said helical coiled spring, and means for clamping said helical coiled spring and said sealing means in said wedge-shaped groove and against the surfaces of said pipe ends together by means of the contact pressure between said helical coiled spring, said sealing means, and said pipe ends.
Claim 3
Dependent Claim
130 words
A releasable pipe connection comprising a pair of pipe ends engaged in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing ring separate from said clamping ring arranged in said wedge-shaped groove so as to be retained therein by said helical coiled spring, and means for clamping said helical coiled spring in said wedge-shaped groove and against the surfaces of said pipe ends defining said grooves to connect said pipe ends together by means of the contact pressure between said helical coiled spring and said pipe ends.
Claim 4
Dependent Claim
130 words
A releasable pipe connection comprising a pair of pipe ends engaged in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing ring separate from said clamping ring arranged in said wedge-shaped groove so as to be retained therein by said helical coiled spring, and means for clamping said helical coiled spring in said wedge-shaped groove and against the surfaces of said pipe ends defining said grooves to connect said pipe ends together by means of the contact pressure between said helical coiled spring and said pipe ends.
Claim 5
Dependent Claim
141 words
A releasable pipe connection comprising a pair of pipe ends engaging in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing means disposed on said coiled spring, said sealing means being constructed of metal and having a V-shaped cross section when unbiased and which at least partially encloses the coils of said helical coiled spring, and means for clamping said helical coiled spring and said sealing means in said wedge-shaped groove and against the surfaces of said pipe ends together by means of the contact pressure between said helical coiled spring, said sealing means, and said pipe ends.
Claim 6
Dependent Claim
141 words
A releasable pipe connection comprising a pair of pipe ends engaging in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing means disposed on said coiled spring, said sealing means being constructed of metal and having a V-shaped cross section when unbiased and which at least partially encloses the coils of said helical coiled spring, and means for clamping said helical coiled spring and said sealing means in said wedge-shaped groove and against the surfaces of said pipe ends together by means of the contact pressure between said helical coiled spring, said sealing means, and said pipe ends.
Claim 7
Dependent Claim
138 words
A releasable pipe connection comprising a pair of pipe ends engaging in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing means which is a tube, of circular cross section when unbiased, disposed on said helical coiled spring to completely surround it in a sleeve-like manner, and means for clamping said helical coiled spring and said tube in said wedge-shaped groove and against the surfaces of said pipe ends defining said groove to connect said pipe ends together by meanS of the contact pressure between said helical coiled spring, said tube, and said pipe ends.
Claim 8
Dependent Claim
138 words
A releasable pipe connection comprising a pair of pipe ends engaging in one another, one pipe end acting as a sleeve for the other pipe end and together the pipe ends defining a wedge-shaped groove, an annular helical coiled spring, having coils that define a circular cross section when unbiased, positioned in the groove so as to serve as a clamping ring, a sealing means which is a tube, of circular cross section when unbiased, disposed on said helical coiled spring to completely surround it in a sleeve-like manner, and means for clamping said helical coiled spring and said tube in said wedge-shaped groove and against the surfaces of said pipe ends defining said groove to connect said pipe ends together by meanS of the contact pressure between said helical coiled spring, said tube, and said pipe ends.
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US1711995A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |