CA2603112A1 - Reverse acting rupture disc with laser-defined electropolished line of weakness and method of forming the line of weakness - Google Patents

Reverse acting rupture disc with laser-defined electropolished line of weakness and method of forming the line of weakness Download PDF

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Publication number
CA2603112A1
CA2603112A1 CA002603112A CA2603112A CA2603112A1 CA 2603112 A1 CA2603112 A1 CA 2603112A1 CA 002603112 A CA002603112 A CA 002603112A CA 2603112 A CA2603112 A CA 2603112A CA 2603112 A1 CA2603112 A1 CA 2603112A1
Authority
CA
Canada
Prior art keywords
line
relief device
pressure relief
set forth
weakness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002603112A
Other languages
French (fr)
Other versions
CA2603112C (en
Inventor
Bon F. Shaw
Bradford T. Stilwell
Michael D. Krebill
Brent W. Leonard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fike Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Individual filed Critical Individual
Priority to CA2689078A priority Critical patent/CA2689078C/en
Publication of CA2603112A1 publication Critical patent/CA2603112A1/en
Application granted granted Critical
Publication of CA2603112C publication Critical patent/CA2603112C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • B65D90/36—Weakened parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/14—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member
    • F16K17/16—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs
    • F16K17/1606—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs of the reverse-buckling-type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/359—Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/362—Laser etching
    • B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/40—Removing material taking account of the properties of the material involved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/14—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member
    • F16K17/16—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs
    • F16K17/162—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side with fracturing member with fracturing diaphragm ; Rupture discs of the non reverse-buckling-type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B23K2103/05—Stainless steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/16—Composite materials, e.g. fibre reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/16—Composite materials, e.g. fibre reinforced
    • B23K2103/166—Multilayered materials
    • B23K2103/172—Multilayered materials wherein at least one of the layers is non-metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials
    • B23K2103/26—Alloys of Nickel and Cobalt and Chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1632—Destructible element
    • Y10T137/1692—Rupture disc
    • Y10T137/1714—Direct pressure causes disc to burst
    • Y10T137/1729—Dome shape
    • Y10T137/1737—Reverse buckling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1632—Destructible element
    • Y10T137/1692—Rupture disc
    • Y10T137/1744—Specific weakening point

Abstract

A reverse acting rupture disc is provided having a laser defined electropolished line- of- weakness recess, and an improved method of forming an electropolished line-of- weakness recess in a reverse acting rupture disc that assures full opening of the disc upon reversal. A rupture disc blank is pre-bulged, final bulged, and then provided with a layer of resist material. A
laser is used to remove at least a portion of the layer of resist material corresponding to a desired line-of-weakness recess in the concave face of the bulged rupture disc. The disc is then subjected to an electropolishing operation to remove metal from the lased area of the rupture disc, thereby forming a lustrous polished line-of-weakness recess in the disc of desired configuration and of a predetermined depth that is related to material thickness. The electropolished line of weakness is defined by spaced opposed channel portions separated by a central raised crown portion wherein the channel portions are of greater depth than the crown portion. The burst/reversal pressure of the disc having an electropolished line-of-weakness recess may be selectively controlled by varying the pre- bulging pressure on the disc.

Claims (43)

1. A pressure relief device comprising:
a relatively thin metallic member having opposed faces;
one of said faces of the member being provided with an elongated line of weakness defined by a recess in said one face, said elongated line-of-weakness recess being configured to present the outline of an over pressure relief area of the member, said line-of-weakness recess being defined by spaced opposed channel portions separated by a central raised crown portion, said channel portions being of greater depth than said crown portion.
2. A pressure relief device as set forth in claim 1 wherein said line-of-weakness recess has an electropolished surface.
3. A pressure relief device as set forth in claim 3 wherein said line-of-weakness recess is substantially W-shaped in cross section.
4. A pressure relief device as set forth in claim 3 wherein said crown is of generally inverted U-shape.
5. A pressure relief device as set forth in claim 1 wherein the maximum depth of the line-of-weakness recess is at least about 70% ~ 25% of the cross sectional thickness of the member.
6. A pressure relief device as set forth in claim 1 wherein the maximum depth of the line-of-weakness recess is at least about 70% ~ 10% of the cross sectional thickness of the member.
7. A pressure relief device as set forth in claim 1 wherein the maximum depth of the line-of-weakness recess is at least about 70% ~ 5% of the cross sectional thickness of the member.
8. A pressure relief device as set forth in claim 2 wherein said surface of the line-of-weakness recess is a passivated electropolished surface.
9. A pressure relief device as set forth in claim 1 wherein the width of the line-of-weakness recess is from about 0.002 in. to about 0.1 in.
10. A pressure relief device as set forth in claim 1 wherein the width of the line-of-weakness recess is from about 0.010 in. to about 0.080 in.
11. A pressure relief device as set forth in claim 1 wherein the depth of the channel portions are substantially uniform throughout the length of the recess.
12 ~A pressure relief device as set forth in claim 1 wherein the width of each of the channel portions of the recess is approximately 25% of the overall width of the recess.
13. ~A pressure relief device as set forth in claim 1 wherein said metallic member has a bulged portion, said line-of-weakness recess being provided in the bulged portion of the metallic member.
14. ~A pressure relief device as set forth in claim 1 wherein the bulged portion of the metallic member has a convex face and a concave face, said line-of-weakness recess being provided in the concave face of the metallic member.
15. ~A pressure relief device as set forth in claim 14 wherein said line-of-weakness recess is located adjacent the perimeter of the bulged portion of the metallic member.
16. ~A pressure relief device as set forth in claim 14 wherein said line-of-weakness recess is of generally C-shaped configuration.
17. ~A pressure relief precurser product comprising:
a sheet of metallic material presenting a face; and a layer of resist material applied to said face, a predetermined area of said resist ~
material being eroded such that a residuum of said resist material exists in said area having a thickness less than other portions of said layer, said residuum in contact with said face in said predetermined area.
18. ~A pressure relief precurser product as set forth in claim 17 wherein said resist material is eroded along a predetermined line, said residuum in contact with said face along said predetermined line.
19. ~A pressure relief precurser product as set forth in claim 17 wherein said resist material is eroded along a generally C-shaped line, said residuum in contact with said face along said C-shaped line.
20. ~A pressure relief precurser product as set forth in claim 17 wherein is provided a lased eroded area.
21. ~A pressure relief precurser product as set forth in claim 17 wlierein said sheet of metallic material has a bulged portion, said predetermined eroded area being in the bulged portion of the metallic sheet.
22. ~A pressure relief precurser product as set forth in claim 21 wherein said bulged portion of the sheet material has opposed convex and concave faces, said predetermined area being on the concave face of the sheet material.
23. ~A pressure relief precurser product comprising:
a sheet of metallic material presenting a face; and a layer of resist material applied to said face, said layer have a predetermined lased area.
24. ~A pressure relief precurser product as set forth in claim 23 wherein said predetermined lased area is of configuration presenting a line.
25. ~A pressure relief precurser product as set forth in clam 24 wherein said lased line is generally C-shaped.
26. ~A pressure relief device comprising:
a relatively thin metallic member having opposed faces;
one of said faces of the member being provided with an elongated line of weakness defined by a recess in said one face, said elongated line-of-weakness recess being configured to present the outline of an over pressure relief area of the member, said line-of-weakness recess being defined by spaced opposed side wall surfaces joined by a bottom wall surface, said surfaces of the line-of-weakness recess having a lustrous surface finish that is no greater than about 4 microinches of average deviation from the mean surface.
27. ~A pressure relief device as set forth in 26 wherein said line-of-weakness recess has a lustrous surface finish that is no greater than about 2 microinches of average deviation from the mean surface.
28. ~A pressure relief device comprising:
a relatively thin metallic member having opposed faces;
one of said faces of the member being provided with an elongated line of weakness defined by a recess in said one face, said elongated line-of-weakness recess being configured to present the outline of an over pressure relief area of the member, said line-of-weakness recess being defined by spaced opposed side wall surfaces joined by a bottom wall surface, said surfaces of the line-of-weakness recess having a lustrous surface finish at least about 6 times smoother than the surface finish of the metallic member.
29. ~A pressure relief device as set forth in 28 wherein said line-of-weakness recess has a lustrous surface finish at least about 8 times smoother than the surface finish of the metallic member.
30. ~A method of preparing a relatively thin metallic pressure relief device comprising the steps of:
applying a barrier layer of resist material on at least a portion of one of the opposed faces of the relief device;
lasing a predetermined area of the barrier layer of resist material on said one face of the relief device;
removing metal from the relief device corresponding to said lased predetermined area of the resist material; and controlling the depth of removal of metal from the relief device such that not all of the metal is removed corresponding to said lased predetermined area of the resist material.
31. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein is included the step of subjecting the predetermined line of the pressure relief device to electropolishing to form a line-of-weakness recess of predetermined depth in said one face of the relief device.
32. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein is included the step of controlling the electropolishing to form a line-of-weakness recess defined by spaced opposed channel portions separated by a central raised crown portion, said channel portions being of greater depth than said crown portion.
33. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein is included the step of lasing the resist material on said one face of the relief device along a predetermined line, said step of removing metal from the relief device along said predetermined line being controlled to form a line-of-weakness recess of predetermined depth in said one face of the relief device.
34. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein is included the step of bulging a portion of the relief device prior to application of the resist material to said one face of the relief device.
35. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 34 wherein said bulged portion of the relief device has a convex face and a concave face, and including the steps of applying said resist material to at least the concave face of the bulged portion of the relief device, and lasing the predetermined area of said resist material on said concave face of the bulged portion of the relief device.
36. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein is included the step of removing metal from the relief device corresponding to said predetermined area of the resist material by electropolishing.
37. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein is included the steps of lasing the layer of resist material along a predetermined line, and controlling the width of the material removed from said pressure relief device by controlling the width of the lased line of resist material.
38. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein metal is removed from the relief device by the step of electropolishing to form a recess in the relief device of predetermined depth.
39. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 30 wherein is included the step of lasing the resist material along a predetermined line corresponding to a desired line of weakness in the relief device.
40. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 39 wherein is included the step of lasing the resist material along a generally C-shaped line corresponding to the desired line of weakness in the relief device.
41. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 40 wherein is included the step of lasing the resist material along a line having a generally inverted U-shaped peak intermediate the ends of the line that extend away from the circular length of the line.
42. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 40 wherein is included the step of lasing the resist material along arcuate C-shaped curved extensions at opposite extremities of the C-shaped line that extend away from the circular length of the line.
43. ~A method of preparing a relatively thin metallic pressure relief device as set forth in claim 40 wherein is included the step of lasing the resist material along closed arcuate extensions at opposite extremities of the C-shaped line that extend away from the circular length of the line.
CA2603112A 2005-04-01 2006-03-23 Reverse acting rupture disc with laser-defined electropolished line of weakness and method of forming the line of weakness Expired - Fee Related CA2603112C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2689078A CA2689078C (en) 2005-04-01 2006-03-23 Method of preparing a metallic pressure relief device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/096,466 US7600527B2 (en) 2005-04-01 2005-04-01 Reverse acting rupture disc with laser-defined electropolished line of weakness and method of forming the line of weakness
US11/096,466 2005-04-01
PCT/US2006/010989 WO2006107629A2 (en) 2005-04-01 2006-03-23 Reverse acting rupture disc with laser-defined electropolished line of weakness and method of forming the line of weakness

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2689078A Division CA2689078C (en) 2005-04-01 2006-03-23 Method of preparing a metallic pressure relief device

Publications (2)

Publication Number Publication Date
CA2603112A1 true CA2603112A1 (en) 2006-10-12
CA2603112C CA2603112C (en) 2010-09-14

Family

ID=37073942

Family Applications (4)

Application Number Title Priority Date Filing Date
CA2888814A Expired - Fee Related CA2888814C (en) 2005-04-01 2006-03-23 A metallic pressure relief precurser product
CA3011707A Abandoned CA3011707A1 (en) 2005-04-01 2006-03-23 A pressure relief device
CA2689078A Expired - Fee Related CA2689078C (en) 2005-04-01 2006-03-23 Method of preparing a metallic pressure relief device
CA2603112A Expired - Fee Related CA2603112C (en) 2005-04-01 2006-03-23 Reverse acting rupture disc with laser-defined electropolished line of weakness and method of forming the line of weakness

Family Applications Before (3)

Application Number Title Priority Date Filing Date
CA2888814A Expired - Fee Related CA2888814C (en) 2005-04-01 2006-03-23 A metallic pressure relief precurser product
CA3011707A Abandoned CA3011707A1 (en) 2005-04-01 2006-03-23 A pressure relief device
CA2689078A Expired - Fee Related CA2689078C (en) 2005-04-01 2006-03-23 Method of preparing a metallic pressure relief device

Country Status (15)

Country Link
US (2) US7600527B2 (en)
EP (2) EP1863730B1 (en)
JP (1) JP5175712B2 (en)
KR (1) KR100941572B1 (en)
CN (2) CN101748473B (en)
AU (1) AU2006232932B2 (en)
BR (1) BRPI0607714B1 (en)
CA (4) CA2888814C (en)
ES (2) ES2517191T3 (en)
HK (2) HK1120096A1 (en)
IL (1) IL186449A (en)
MX (1) MX2007012161A (en)
RU (1) RU2413112C2 (en)
TW (1) TWI367851B (en)
WO (1) WO2006107629A2 (en)

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US7520153B2 (en) * 2006-05-13 2009-04-21 Rembe Gmbh Bursting disk and method for manufacturing the same
DE502006004930D1 (en) * 2006-11-07 2009-11-05 Indag Gmbh Outlet for a container
US8671550B1 (en) * 2006-12-14 2014-03-18 Oklahoma Safety Equipment Company, Inc. Wire electrical discharge machined rupture disk and method
ES2622413T3 (en) * 2007-06-18 2017-07-06 Donadon Safety Discs And Devices S.R.L. Method for producing safety / breakage discs that have a previously calculated break threshold
US8333212B2 (en) * 2008-06-04 2012-12-18 Fike Corporation Rupture disc with machined line of opening
US20100140238A1 (en) * 2008-12-10 2010-06-10 Continental Disc Corporation Machining score lines in a rupture disc using laser machining
US8636164B2 (en) * 2008-12-10 2014-01-28 Continental Disc Corporation Controlling the rated burst pressure of a rupture disc through the use of control scores on the disc dome
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