US3653434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical pressure vessel
Assignee: SPECIALILLVERKNINGAR BERTIL EKLUND & Co AB
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Filing: 1969-05-14
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Granted: 1972-04-04
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Expires: 1989-05-14
Abstract
Abstract A pressure vessel consists of a comparatively thin-walled container and a pressure-resistant construction supporting the container. The pressure-resistant construction comprises girders extending longitudinally, and annular members extending circumferentially around the girders. The girders have top and bottom shoulders to engage top and bottom walls.
Inventors
- 👤 Sigfrid Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:59
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/08; G21C13/087; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
123 words
Cylindrical pressure vessel comprising, in combination, a comparatively thin-walled cylindrical container having pressureresistant end walls; and a pressure-resistant construction embracing said container; said pressure-resistant construction comprising a plurality of girders extending longitudinally of said pressure vessel and formed with shoulders at their ends facing radially inwardly to cooperate with said pressureresistant end walls; said girders having rectangular cross sections and their widths being substantially larger than their thicknesses; said girders being oriented with their widths extending radially in relation to said pressure vessel; annular elements surrounding said girders and retaining said girders in position; and annular plates secured to the ends of said girders, each girder being connected to each angular plate by at least two fastening elements preventing the girders from twisting.
Claim 2
Dependent Claim
123 words
Cylindrical pressure vessel comprising, in combination, a comparatively thin-walled cylindrical container having pressureresistant end walls; and a pressure-resistant construction embracing said container; said pressure-resistant construction comprising a plurality of girders extending longitudinally of said pressure vessel and formed with shoulders at their ends facing radially inwardly to cooperate with said pressureresistant end walls; said girders having rectangular cross sections and their widths being substantially larger than their thicknesses; said girders being oriented with their widths extending radially in relation to said pressure vessel; annular elements surrounding said girders and retaining said girders in position; and annular plates secured to the ends of said girders, each girder being connected to each angular plate by at least two fastening elements preventing the girders from twisting.
Claim 3
Dependent Claim
21 words
Cylindrical pressure vessel according to claim 1, characterized in that the girders (8) are provided with channels (13) for a coolant.
Claim 4
Dependent Claim
35 words
Cylindrical pressure vessel according to claim 1, characterised in that the annular elements (17) consists of a number of metal rings (18) placed one on top of the other and held together by bolts (19).
Claim 5
Dependent Claim
33 words
Cylindrical pressure vessel as claimed in claim 3, in which the metal rings (18) are arranged in groups separated by spacers (34), for the purpose of increasing the surface exposed to the air.
Claim 6
Dependent Claim
43 words
Cylindrical pressure vessel as claimed in claim 3, in which a first annular element (17a) is surrounded by a second annular element (17b), spacers (38) being arranged between the two annular elements for the purpose of increasing the surface exposed to the air.
Claim 7
Dependent Claim
31 words
Cylindrical pressure vessel according to claim 1, characterized in that the annular elements (17) are connected by a metal sheath (21) to prevent them from twisting in relation to each other.
Claim 8
Dependent Claim
72 words
Cylindrical pressure vessel according to claim 1 in which at least one tube (6) is connected to the side wall (1) of the cylindrical container, characterized in that the tube (6) extends between two adjacent annular elements (17) and between two adjacent girders (8) which are bent aside to provide space for the tube (6), the side wall (1) of the container having a reinforced section (7) close to the tube (6).
Claim 9
Dependent Claim
39 words
Cylindrical pressure vessel according to claim 1, characterized in that the lower part of the vertical girders (8), and the underside of the lowest ring (17), rest on rollers or balls (27, 70) in order to permit radial expansion.
Claim 10
Dependent Claim
38 words
Cylindrical pressure vessel according to claim 1, characterized in that the pressure-resistant construction for the end walls (4) consists of concentric ring members (24) having such a wedge-shaped cross section that they form an inwardly domed end wall.
Claim 11
Dependent Claim
27 words
Cylindrical pressure vessel according to claim 9, characterized in that said concentric ring members are formed by cooperating ring sections; and locking members interconnecting adjacent ring sections.
Claim 12
Dependent Claim
70 words
Cylindrical pressure vessel as claimed in claim 1, in which the lower portion of each girder (8) has a horizontal shoulder (60) which supports a plurality of supporting members (63), which engage a shoulder (61) on the bottom (62) of the pressure vessel, said supporting member (63) having a plurality of vertical slots (64), whereby the supporting members (63) allow a small radial movement between the shoulders (60) and (61).
Claim 13
Dependent Claim
45 words
Cylindrical pressure vessel as claimed in claim 1, in which a shoulder (77) on the lower portion of the girders (8) carries a plurality of suspending members (78), said suspending members (78) having a shoulder (79) carrying the bottom end wall of the pressure vessel.
Claim 14
Dependent Claim
79 words
Cylindrical pressure vessel as claimed in claim 12, in which said suspending members are supported on said girders for swinging movement radially of the vessel, and a retaining ring embracing the lower ends of said suspending members and retaining the same in a position carrying said bottom end wall, said retaining ring being removable to provide for outward swinging of the bottom ends of said suspending members to permit removal of said bottom end wall from said pressure vessel.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |