Metallic flat gasket

Patent metadata

Field	Value
Publication number	US-2018328490-A1
Application number	US-201615777528-A
Country	US
Kind code	A1
Filing date	Nov 15, 2016
Priority date	Nov 20, 2015
Publication date	Nov 15, 2018
Grant date	—

Abstract

A metallic flat gasket having a through-opening which is covered by a sieve element is described. The gasket serves for sealing a line transition between two components and for capturing particles in the fluid flowing through the line. At leat one metallic layer of the flat gasket has at least two continuations, which extend from the edge of a through-opening into the region of the through-opening, the at least two continuations being curved such that at least two of the continuations merge into each other in one plane or are connected together.

First claim

1 - 26 . (canceled)

27 . A metallic flat gasket having at least one metallic layer,
the at least one metallic layer having at least one through-opening which is covered by a sieve element, the at least one metallic layer extending, in the region thereof directly adjacent to the through-opening, in a first plane, the sieve element consisting of a mesh material or comprising this and having a curved portion which is curved up to a second plane, and also an edge portion which surrounds the curved portion annularly and extends, at least in portions, in a third plane, the second plane being different from the third plane, wherein the at least one metallic layer has at least two continuations which extend from the edge of the through-opening into the region of the through-opening, the at least two continuations being curved such that at least two of the continuations in a fourth plane merge into each other or are connected to each other, the first plane being different from the fourth plane.

28 . The metallic flat gasket according to claim 27 , wherein at least two of the at least two continuations of the at least one metallic layer are connected together, at least in portions, with formation of at least one support portion or continue one in the other in one piece, the support portion in projections on the plane of the flat gasket being disposed within the through-opening or bridging the through-opening.

29 . The metallic flat gasket according to claim 27 , wherein the at least one metallic layer has more than one support portion.

30 . The metallic flat gasket according to claim 27 , wherein the curved portion is supported, at least in portions, on the at least one support portion, with formation of an inner contact region.

31 . The metallic flat gasket according to claim 27 , wherein the edge portion of the sieve element is supported, at least in portions, on the at least one metallic layer, with formation of an outer contact portion.

32 . The metallic flat gasket according to claim 27 , wherein the sieve element, in the region of its edge portion, is connected to at least one of the one metallic layer, with formation of a connection portion, in particular integrally or in a positive form fit.

33 . The metallic flat gasket according to claim 32 , wherein the at least one through-opening is surrounded, outside the connection portion, by a sealing element moulded in the at least one metallic layer, the sealing element selected from a bead or a half bead.

34 . The metallic flat gasket according to claim 27 , wherein the at least one metallic layer is selected from a steel or a nickel-based alloy or comprises steel or an alloy, and the tensile strength of the steel or of the nickel-based alloy is at least 900 N/mm 2 .

35 . The metallic flat gasket according to claim 27 , wherein the continuations have, outside any possibly present bent regions and/or connection regions, no texture changes.

36 . The metallic flat gasket according to claim 35 , wherein the continuations continue continuously, with formation of at least one arc.

37 . The metallic flat gasket according to claim 36 , wherein the at least one metallic layer has precisely one support portion which comprises precisely one continuous arc and has, upon projection into the first plane, a maximum width over its entire course, which is at most twice the sheet metal thickness of the at least one metallic layer.

38 . The metallic flat gasket according to claim 37 , wherein the continuations respectively have precisely one connection region, the continuations having, in their connection region respectively, a deflection by 80° to 100° out of the first plane.

39 . The metallic flat gasket according to claim 27 , wherein the gasket has a plurality of support portions having respectively one continuous arc, the continuations having respectively one connection region, and the continuations being deflected, in their connection region, respectively by 45° to 90° out of the first plane.

40 . The metallic flat gasket according to claim 28 , wherein the area of the continuations forming the at least one support portion transversely to the extension direction of the continuations extends essentially parallel to the first plane, or spans with the first plane an angle of −25° to 25°.

41 . The metallic flat gasket according to claim 40 , wherein the at least one support portion, upon projection into the first plane, has a minimum width over its entire course, which is at least five times the sheet metal thickness of the at least one metallic layer.

42 . The metallic flat gasket according to claim 41 , wherein a width of the at least one support portion changes in the course of the support portion.

43 . The metallic flat gasket according to claim 40 , wherein the at least two continuations overlap in portions, and are connected together integrally in the region of this overlap, in particular by welding and/or in a positive form fit and/or by a connection structure including a rivet.

44 . The metallic flat gasket according to claim 40 , wherein the at least one support portion includes more than two continuations, the continuations being connected together via branches.

45 . The metallic flat gasket according to claim 44 , wherein the sieve element and the at least one support portion in portions are connected together integrally in the inner contact region.

46 . The metallic flat gasket according to claim 44 , wherein the second plane and the third plane have a spacing from each other which is between 15% and 55% of the smallest spacing of the side edges of the through-opening.

47 . The metallic flat gasket according to claim 28 , wherein upon projection of the total area of the at least one support portion into the first plane, the total area of the support portion is at most 10% of the area of the sieve element projected into this plane.

48 . The metallic flat gasket according to claim 27 , wherein the sieve element comprises, at least in portions of a woven material, the woven material selected from a steel wire or a stainless steel wire.

49 . The metallic flat gasket according to claim 48 , wherein the sieve element, in the edge portion and outside the connection portion, has a wire thickness of 0.04 to 0.2 mm.

50 . The metallic flat gasket according to claim 49 , wherein the sieve element, within a square area of 10 mm side edge length, has no mesh with a mesh width greater than 0.2 mm.

51 . The metallic flat gasket according to claim 27 , wherein the sieve element is compressed at its outer edge, at least in portions.

Assignees

• Reinz Dichtungs Gmbh

Inventors

• Claus Oliver
• Egloff Georg

Classifications

• F16J15/064 Primary

  the packing combining the sealing function with other functions · CPC title

• F16J15/0825

  laminated · CPC title

• F16J2015/0856

  with a non-metallic coating or strip · CPC title

• F02M26/35

  with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters · CPC title

• F16H57/0402

  Cleaning of lubricants, e.g. filters or magnets · CPC title