Patent US3998477A successfully refreshed from Google Patents.
US3998477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-rigid connection for circular pipes
Assignee: Produits Chimiques Ugine Kuhlmann
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Filing: 1974-07-24
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Granted: 1976-12-21
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Expires: 1994-07-24
Abstract
Abstract A device for non-rigid connection of two rigid cylindrical pipes comprises the combined use of flexible double-lipped gaskets and toroid flexible gaskets surrounding a bulb-shaped zone formed in one of the pipes. The device is particularly useful for fastening fragile tubes containing light emitters to metal reactors used for photochemical processes.
Inventors
- 👤 Henri Delahaye
- 👤 Fernand Fabre
- 👤 Lucien Guerrera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:56
CPC Classifications
F; F16; F16B; F16B7/00; F16L; F16L49/00; Y; Y10; Y10S; Y10S285/00; Y10S285/911
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A non-rigid pressure seal device comprising a rigid circular pipe, a second circular pipe having a bulb-shaped zone with toroidal flexible gaskets surrounding said second circular pipe and disposed adjacent to each end of the bulb-shaped zone; said bulb-shaped zone resting on and supported by at least one of said toroidal gaskets; a housing including means to postionally hold said toroidal gaskets adjacent to each end of the bulb-shaped zone; at least one double-lipped gasket attached to said second circular pipe in scaling and sealing engagement therewith a point below the toroidal flexible gaskets; clamping means for mounting said double-lipped gaskets to said rigid circular pipe; means for securing said housing to said clamping means whereby said second circular pipe is resiliently supported within said rigid pipe.
Claim 2
Dependent Claim
127 words
A non-rigid pressure seal device comprising a rigid circular pipe, a second circular pipe having a bulb-shaped zone with toroidal flexible gaskets surrounding said second circular pipe and disposed adjacent to each end of the bulb-shaped zone; said bulb-shaped zone resting on and supported by at least one of said toroidal gaskets; a housing including means to postionally hold said toroidal gaskets adjacent to each end of the bulb-shaped zone; at least one double-lipped gasket attached to said second circular pipe in scaling and sealing engagement therewith a point below the toroidal flexible gaskets; clamping means for mounting said double-lipped gaskets to said rigid circular pipe; means for securing said housing to said clamping means whereby said second circular pipe is resiliently supported within said rigid pipe.
Claim 3
Dependent Claim
21 words
The device of claim 1 wherein two double-lipped gaskets are superimposed in spaced relationship to each other providing a zone therebetween.
Claim 4
Dependent Claim
30 words
The device of claim 2 wherein the zone between the superimposed gaskets is provided with an alarm system means for alerting when there is a leakage in the first gasket.
Claim 5
Dependent Claim
149 words
A non-rigid pressure seal device comprising a rigid circular pipe, a second circular pipe having a bulb-shaped zone with toroidal flexible gaskets surrounding said second circular pipe and disposed adjacent to each end of the bulb-shaped zone; said bulb-shaped zone resting on and supported by at least one of said toroidal gaskets; a housing including means to positionally hold said toroidal gaskets adjacent to each end of the bulb-shaped zone; at least one flexible double-lipped gasket attached to said second circular pipe in a manner that each of the lips of said gaskets contacts said second circular pipe at an acute angle with respect to the axis of said second circular pipe and in sealing engagement therewith at a point below the toroidal flexible gasket; and means for mounting said double-lipped gasket to said rigid pipe whereby said second pipe is resiliently supported with respect to said rigid pipe.
Claim 6
Dependent Claim
149 words
A non-rigid pressure seal device comprising a rigid circular pipe, a second circular pipe having a bulb-shaped zone with toroidal flexible gaskets surrounding said second circular pipe and disposed adjacent to each end of the bulb-shaped zone; said bulb-shaped zone resting on and supported by at least one of said toroidal gaskets; a housing including means to positionally hold said toroidal gaskets adjacent to each end of the bulb-shaped zone; at least one flexible double-lipped gasket attached to said second circular pipe in a manner that each of the lips of said gaskets contacts said second circular pipe at an acute angle with respect to the axis of said second circular pipe and in sealing engagement therewith at a point below the toroidal flexible gasket; and means for mounting said double-lipped gasket to said rigid pipe whereby said second pipe is resiliently supported with respect to said rigid pipe.
Claim 7
Dependent Claim
36 words
The device of claim 4 in which the double-lipped gasket is secured to the rigid circular pipe by a means of a clamping mechanism and the housing includes means for securing it to said clamping mechanism.
Claim 8
Dependent Claim
21 words
The device of claim 4 wherein two double-lipped gaskets are superimposed in spaced relationship to each other providing a zone therebetween.
Claim 9
Dependent Claim
31 words
The device of claim 6 wherein the zone between the two superimposed gaskets is provided with an alarm system means for alerting when there is a leakage in the first gasket.
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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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |