Patent US3602532A successfully refreshed from Google Patents.
US3602532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe union
Assignee: Fouquet Werk Frauz and Planck
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Filing: 1969-06-04
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Granted: 1971-08-31
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Expires: 1989-06-04
Abstract
Abstract The invention deals with a metal pipe union including a metalsealing member for withstanding high pressures, vacuum, high temperatures and bending forces and consists primarily of two pipes having axially aligned end portions. Each pipe has at or near its end portion a radially directed flange and the flange of the pipe which is directly arranged at the end of one pipe has a projecting collar. Within this collar is arranged the metal packing ring, which is generally of Z-formation or cross section.
Inventors
- 👤 Hermann Ehrenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:32
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/02; F16L23/024; F16L23/028; F16L23/0283; F16L23/16; F16L23/18; Y; Y10; Y10S; Y10S285/00; Y10S285/917
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
A pipe union for use in joining metal pipe ends to withstand especially high pressures and temperatures, characterized in that two pipe ends have spaced apart flanges provided with a sealing element of Z-formation inserted within the space between said flanges of the pipe ends to be connected to one another, each sealing element having a stay and two legs extending as inner and outer legs in axial direction of the pipe ends and being provided with radially projecting lugs at their outer and inner periphery, respectively, said lugs bearing against predetermined adjacent spaced apart portions of said flanges of said pipe ends, so that when said flanges are moved toward each other said sealing element will tilt around said lugs, thereby causing the lugs to seal against said predetermined portions of said flanges of said pipe ends, said sealing element consisting of the same metallic and resilient material as the material of the pipe ends to be connected.
Claim 2
Dependent Claim
159 words
A pipe union for use in joining metal pipe ends to withstand especially high pressures and temperatures, characterized in that two pipe ends have spaced apart flanges provided with a sealing element of Z-formation inserted within the space between said flanges of the pipe ends to be connected to one another, each sealing element having a stay and two legs extending as inner and outer legs in axial direction of the pipe ends and being provided with radially projecting lugs at their outer and inner periphery, respectively, said lugs bearing against predetermined adjacent spaced apart portions of said flanges of said pipe ends, so that when said flanges are moved toward each other said sealing element will tilt around said lugs, thereby causing the lugs to seal against said predetermined portions of said flanges of said pipe ends, said sealing element consisting of the same metallic and resilient material as the material of the pipe ends to be connected.
Claim 3
Dependent Claim
99 words
A pipe union as claimed in claim 1, characterized in that the one pipe end comprises a Z-type flange at its joining end, the depth of the joining end approximately corresponding to the length of the outer leg of said sealing element, and that the other pipe end is provided with a flange set back relative to the other joining end, the extent of this setting back relative to the other pipe end approximately corresponding to the length of the outer leg, the wall thickness of the stay of the length of the inner leg of said sealing element.
Claim 4
Dependent Claim
35 words
A pipe union as claimed in claim 1, characterized in that said lugs are triangular in cross section, the tips of said lugs being set back relative to the frontal surfaces of the respective leGs.
Claim 5
Dependent Claim
140 words
A pipe union as claimed in claim 1, characterized in that a cylindrical sleeve is located over the two pipe ends to be joined, said sleeve being provided with two annular inner grooves, each groove accommodating an open spring ring, said two spring rings extending beyond the ends of the two pipe flanges and having inner diameters less than the outer diameters of the flanges, a clamping ring located between one of said spring rings and one of said flanges and having an outer diameter greater than the inner diameter of said spring rings and an inner diameter less than the outer diameters of said flanges, and a plurality of axially directed adjusting bolts coacting with said one of said flanges and said clamping ring to move said flanges toward each other and being equally distributed over said clamping ring.
Claim 6
Dependent Claim
26 words
A pipe union as claimed in claim 1, characterized by a sleeve shaped for engagement with the outer opposed flanges of said two pipe end flanges.
Claim 7
Dependent Claim
94 words
A pipe union as claimed in claim 1, characterized in that the opposed faces of the two pipe end flanges are shaped for moving relative to each other and a clamping sleeve comprised of at least two parts encircling said pipe end flanges, each of said sleeve parts being provided with two converging inner annular flaps, the inclination of said flaps being conformed to the inclination of the outer pipe end flange sides, and screwbolts located in said sleeves for effectuating engagement of said sleeves via its flaps with said pipe end flange sides.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |