EP0177847A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improved safety vent for containers
Assignee: Southern Can Co
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Filing: 1985-09-26
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Granted: —
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Expires: 2005-09-26
Abstract
Abstract C7 A safety vent for an internally pressurized fluid container is disclosed. The safety vent is provided in a wall of the container which is subject to outward deformation when the internal pressure of the container exceeds a predetermined level. The wall has a weakened line of reduced material thickness formed therein which is adapted to fracture to vent the pressurized fluid from the container in response to the stresses therein during the outward deformation of the wall. The wall further includes an elongated rib formed therein with at least one end of the line proximate the weakened line of reduced material thickness. The rib locally weakens the resistance of the wall to outward deformation so that outward deformation of the wall is initiated adjacent the location of the rib. The direction in which deformation progresses and the pressure level at which deformation begins are also controlled by the direction and dimensions of the rib whereby the pressure range for release is less dependent on the residual thickness of the material at the weakened line.
Inventors
- 👤 Josef N. Ruegg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 23:58
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/70; B65D83/38; Y; Y10; Y10S; Y10S137/00; Y10S137/91; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714; Y10T137/1729; Y10T137/1737; Y10T137/1744; Y10T137/1752
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
93 words
A safety vent for an internally pressurized fluid container comprising a wall of said container which is subject to outward deformation when the internal pressure of said container exceeds a predetermined level, a weakened line of reduced material thickness formed in said wall and adapted to fracture to vent the pressurized fluid from said container in response to the stresses thereon during said outward deformation of said wall, and means for controlling the location in said wall at which said deformation starts when the internal pressure of said container exceeds said predetermined level.
Claim 2
Dependent Claim
93 words
A safety vent for an internally pressurized fluid container comprising a wall of said container which is subject to outward deformation when the internal pressure of said container exceeds a predetermined level, a weakened line of reduced material thickness formed in said wall and adapted to fracture to vent the pressurized fluid from said container in response to the stresses thereon during said outward deformation of said wall, and means for controlling the location in said wall at which said deformation starts when the internal pressure of said container exceeds said predetermined level.
Claim 3
Dependent Claim
64 words
A safety vent for an internally pressurized fluid container according to claim 1, wherein said means for controlling the location in said wall at which said deformation starts includes means for locally weakening the resistance of said wall to outward deformation at a location in said wall where deformation is to be started when the internal pressure of said container exceeds said predetermined level.
Claim 4
Dependent Claim
53 words
A safety vent for an internally pressurized fluid container according to claim 1, wherein said means for controlling the location in said wall at which said deformation starts also controls the direction in which said outward deformation progresses so that said deformation progresses in a direction toward said weakened line of reduced material.
Claim 5
Dependent Claim
35 words
A safety vent for an internally pressurized fluid container according to claim 1, wherein said container wall is an end wall which is joined to one end of a tubular side wall of said container.
Claim 6
Dependent Claim
55 words
A safety vent for an internally pressurized fluid container according to claim 4, wherein said weakened line of reduced material thickness is located in a central portion of said end wall and said means for controlling the location in the end wall at which said deformation starts is located radially outwardly from said weakened line.
Claim 7
Dependent Claim
43 words
A safety vent for an internally pressurized fluid container according to claim 5, wherein said means for controlling the location in said end wall at which said deformation starts includes an elongated rib which extends in a radial direction in said end wall.
Claim 8
Dependent Claim
38 words
A safety vent for an internally pressurized fluid container according to claim 5, wherein said weakened line of reduced material thickness is in the form of an arc of a circle about the center of said end wall.
Claim 9
Dependent Claim
41 words
A safety vent for an internally pressurized fluid container according to claim 7, wherein said end wall is dome-shaped inwardly concave and wherein said weakened line of reduced material thickness is farmed in an annular recess provided in said end wall.
Claim 10
Dependent Claim
50 words
A safety vent for an internally pressurized L luid container according to claim 5, wherein said end wall includes a pair of weakened lines of reduced material thickness in the form of arcs located in spaced relationship on opposite sides of a circle about the center of said end wall.
Claim 11
Dependent Claim
65 words
A safety vent for an internally pressurized fluid container according to claim 9, wherein said means for controlling the location in said end wall at which said deformation starts includes a pair of elongated ribs which are formed in said end wall radially outwardly from central portions of respective ones of said weakened lines, said elongated ribs extending in radial directions in said end wall.
Claim 12
Dependent Claim
48 words
A safety vent for an internally pressurized fluid container according to claim 10, wherein said ribs have a predetermined length to locally weaken the resistance of said end wall to outward deformation so that said end wall is outwardly deformed when the internal pressure exceeds said predetermined level.
Claim 13
Dependent Claim
93 words
A safety vent for an internally pressurized fluid container comprising a wall of said container which is subject to outward deformation when the internal pressure of said container exceeds a predetermined level, a weakened line of reduced material thickness formed in said wall and adapted to fracture to vent the pressurized fluid from said container in response to the stresses thereon during said outward deformation of said wall, and an elongated rib formed in said wall with at least a portion of said rib extending proximate said weakened line of reduced material thickness.
Claim 14
Dependent Claim
93 words
A safety vent for an internally pressurized fluid container comprising a wall of said container which is subject to outward deformation when the internal pressure of said container exceeds a predetermined level, a weakened line of reduced material thickness formed in said wall and adapted to fracture to vent the pressurized fluid from said container in response to the stresses thereon during said outward deformation of said wall, and an elongated rib formed in said wall with at least a portion of said rib extending proximate said weakened line of reduced material thickness.
Claim 15
Dependent Claim
38 words
A safety vent for an internally pressurized fluid container according to claim 12, wherein said container wall is a dome-shaped inwardly concave end wall which is joined to one end of a tubular side wall of said container.
Claim 16
Dependent Claim
43 words
A safety vent for an internally pressurized fluid container according to claim 13, wherein said weakened line of reduced material thickness is located in a central portion of said end wall and said elongated rib is located radially outwardly from said weakened line.
Claim 17
Dependent Claim
26 words
A safety vent for an internally pressurized fluid container according to claim 14, wherein said elongated rib extends in a radial direction in said end wall.
Claim 18
Dependent Claim
38 words
A safety vent for an internally pressurized fluid container according to claim 15, wherein said weakened line of reduced material thickness is in the form of an arc of a circle about the center of an end wall.
Claim 19
Dependent Claim
32 words
A safety vent for an internally pressurized fluid container according to claim 16, wherein said weakened line of reduced material thickness is formed in an annular recess provided in said end wall.
Claim 20
Dependent Claim
49 words
A safety vent for an internally pressurized fluid container according to claim 14, wherein said end wall includes a pair of weakened lines of reduced material thickness in the form of arcs located in spaced relationship on opposite sides of a circle about the center of said end wall.
Claim 21
Dependent Claim
48 words
A safety vent for an internally pressurized fluid container according to claim 18, wherein a pair of elongated ribs are formed in said end wall radially outwardly from central portions of respective ones of said weakened lines, said elongated ribs extending in radial directions in said end wall.
Claim 22
Dependent Claim
52 words
A safety vent for an internally pressurized fluid container according to claim 19, wherein said ribs have a predetermined length to locally weaken the resistance of said concave end wall to outward deformation so that said end wall is outwardly deformed when the internal pressure of said container exceeds said predetermined level.
Claim 23
Dependent Claim
106 words
A container for a pressurized fluid comprising a tubular side wall and upper and lower end walls, at least one of said walls being subject to outward deformation when the internal pressure of sais container exceeds a predetermined level, a weakened line of reduced material thickness formed in said at least one wall and adapted to fracture to vent the pressurized fluid from said container in response to the stresses thereon during said outward deformatin of said wall, and means for controlling the location in said at least one wall at which said deformation starts when the internal pressure of said container exceeds said predetermined level.
Claim 24
Dependent Claim
106 words
A container for a pressurized fluid comprising a tubular side wall and upper and lower end walls, at least one of said walls being subject to outward deformation when the internal pressure of sais container exceeds a predetermined level, a weakened line of reduced material thickness formed in said at least one wall and adapted to fracture to vent the pressurized fluid from said container in response to the stresses thereon during said outward deformatin of said wall, and means for controlling the location in said at least one wall at which said deformation starts when the internal pressure of said container exceeds said predetermined level.
Claim 25
Dependent Claim
41 words
A container according to claim 21, wherein said means for controlling the location includes an elongated rib formed in said at least one wall with at least one end of said rib being proximate said weakened line of reduced material thickness.
Claim 26
Dependent Claim
29 words
A container according to claim 22, wherein said rib is an elongate line of relatively harder material in said wall formed by locally heat treating and/or working said material.
Claim 27
Dependent Claim
66 words
A safety vent for an internally pressurized fluid container comprising a wall of said container, a weakened line of reduced material thickness formed in said wall, and means for causing localized deformation of said wall in the vicinity of said weakened line to fracture said weakened line and vent the pressurized fluid from said container when the internal pressure of said container exceeds a predetermined level.
Claim 28
Dependent Claim
66 words
A safety vent for an internally pressurized fluid container comprising a wall of said container, a weakened line of reduced material thickness formed in said wall, and means for causing localized deformation of said wall in the vicinity of said weakened line to fracture said weakened line and vent the pressurized fluid from said container when the internal pressure of said container exceeds a predetermined level.
Claim 29
Dependent Claim
38 words
A safety vent for an internally pressurized fluid container according to claim 24, wherein said means for causing localized deformation includes an elongated rib formed in said wall and extending proximate said weakened line of reduced material thickness.
References Cited (Backward Citations)
No citation records indexed.
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