US3830259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel
Assignee: EXOL Inc A CORP OF DE
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Filing: 1972-02-09
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Granted: 1974-08-20
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Expires: 1992-02-09
Abstract
Abstract This invention relates to a pressure vessel and more particularly to a pressure accumulator of the type including a rigid container having a pair of ports at its respective ends with a deformable partition or bladder therein having a mouth at one end affixed to one of said ports, said bladder separating two fluids such as gas or liquid under pressure in said container. The bladder is of the type formed from two separate sections, each substantially cup-shaped, so that when the rims of the sections are joined, a closed container will be formed. As the bladder expands to force liquid from the other port of the container, stress will be imparted to the wall of the bladder as a result of the stretching thereof, and such bladder wall is conformed to minimize the stress that would otherwise be imparted to the junction between the two sections of the bladder.
Inventors
- 👤 J Mercier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:51
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C65/00; F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; B29C66/70; B29C66/71; B29K; B29K2021/00; B29L; B29L2022/00; B29L2022/02; B29L2022/025; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3152; F15B2201/40; F15B2201/41; F15B2201/411; F15B2201/415; F15B2201/4155; F15B2201/43; F15B2201/435; F15B2201/60; F15B2201/61
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
225 words
A pressure vessel comprising a rigid hollow container having axially aligned ports, a partition of resilient deformable material in said container intervening between said ports and defining two chambers in communication respectively with said ports, said partition having a bond zone subject to the stresses imparted to the partition as a result of the stretching thereof in operation, characterized by said partition having in proximity to said bond zone, a stress relief zone, the width of said stress relief zone being at least equal to that of the bond zone and the distance separating said zones being less than twice the width of said bond zone, said stress relief zone being adapted substantially to absorb the stresses resulting from stretching of the partition, to which the bond zone would otherwise be subjected, said partition having a reduced wall thickness defining said stress relief zone, the latter comprising a decreasing thickness zone spaced from the bond zone immediately followed by an increasing thickness zone, the thickness of the portion of the partition wall defining said stress relief zone being gradually reduced from the extremities of the zone to the middle portion thereof, the thickness of the partition wall at the middle portion of the stress relief zone being between onethird to one-half the thickness of the partition wall at the extremities of said stress relief zone.
Claim 2
Dependent Claim
225 words
A pressure vessel comprising a rigid hollow container having axially aligned ports, a partition of resilient deformable material in said container intervening between said ports and defining two chambers in communication respectively with said ports, said partition having a bond zone subject to the stresses imparted to the partition as a result of the stretching thereof in operation, characterized by said partition having in proximity to said bond zone, a stress relief zone, the width of said stress relief zone being at least equal to that of the bond zone and the distance separating said zones being less than twice the width of said bond zone, said stress relief zone being adapted substantially to absorb the stresses resulting from stretching of the partition, to which the bond zone would otherwise be subjected, said partition having a reduced wall thickness defining said stress relief zone, the latter comprising a decreasing thickness zone spaced from the bond zone immediately followed by an increasing thickness zone, the thickness of the portion of the partition wall defining said stress relief zone being gradually reduced from the extremities of the zone to the middle portion thereof, the thickness of the partition wall at the middle portion of the stress relief zone being between onethird to one-half the thickness of the partition wall at the extremities of said stress relief zone.
Claim 3
Dependent Claim
86 words
The combination set forth in claim 1 in which said partition is a bladder having two substantially cup-shaped sections one of said sections having an axial opening at its end, means connecting the rims of said sections to define said bond zone therebetween, the other of said sections being of reduced wall thickness starting from a portion of said section longitudinally spaced from the bond zone, to define the stress relief zone, the latter being of width approximately four times the width of the bond zone.
Claim 4
Dependent Claim
30 words
The combination set forth in claim 1 in which the distance between the bond zone and the stress relief zone is approximately 1.7 times the width of the bond zone.
Claim 5
Dependent Claim
40 words
The combination set forth in claim 1 in which the width of the stress relief zone is slightly greater than that of the bond zone and the distance separating said zones is approximately one-third the width of said bond zone.
Claim 6
Dependent Claim
60 words
The combination set forth in claim 1 in which said partition is a bladder having a mouth at one end in communication with one of said ports and closed at its other end, a valve member bonded to the closed end of said bladder, the area of the bond of said valve member to said bladder defining the bond zone.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |