摘要:
A metallic flat seal, in particular a cylinder head gasket, includes at least one through-hole, a functional layer, a spacer layer, and a stopper layer which is arranged between the functional layer and the spacer layer, as well as a closed sealing bead around every through-hole in the functional layer, wherein the sealing bead points in the direction of the stopper layer, the seal additionally comprising an embossed closed contour around every through-hole in that least the stopper layer, the functional layer or the spacer layer, wherein the contour forms a fixing aid. A method is also provided for making such a gasket.
摘要:
One aspect of the invention relates to a cylinder head gasket provided with at least one opening corresponding to a combustion chamber of an internal combustion engine. The gasket has a function layer with a full bead and an annular support with a bead. The bead of the annular support is arranged on the side of the full bead which is oriented away from the combustion chamber. Another aspect of the invention relates to a cylinder head gasket having an upper functional layer, an annular support and a lower functional layer. The annular support is arranged between the upper and lower functional layers and is adjacent to the lower functional layer. The upper functional layer comprises one full bead, and the lower functional layer has a bead arranged on the side of the full bead which is oriented away from the combustion chamber.
摘要:
One aspect of the invention relates to a cylinder head gasket provided with at least one opening corresponding to a combustion chamber of an internal combustion engine. The gasket has a function layer with a full bead and an annular support with a bead. The bead of the annular support is arranged on the side of the full bead which is oriented away from the combustion chamber. Another aspect of the invention relates to a cylinder head gasket having an upper functional layer, an annular support and a lower functional layer. The annular support is arranged between the upper and lower functional layers and is adjacent to the lower functional layer. The upper functional layer comprises one full bead, and the lower functional layer has a bead arranged on the side of the full bead which is oriented away from the combustion chamber.
摘要:
A metallic flat seal, in particular a cylinder head gasket, includes at least one through-hole, a functional layer, a spacer layer, and a stopper layer which is arranged between the functional layer and the spacer layer, as well as a closed sealing bead around every through-hole in the functional layer, wherein the sealing bead points in the direction of the stopper layer, the seal additionally comprising an embossed closed contour around every through-hole in that least the stopper layer, the functional layer or the spacer layer, wherein the contour forms a fixing aid. A method is also provided for making such a gasket.
摘要:
A metallic flat gasket with a solid bead has at least one metallic layer (2), wherein the metallic gasket comprises at least one solid bead (6), which is formed in at least one layer (2) of the metallic gasket, wherein the solid bead (6) comprises two flanks (8, 10) lying opposite one another. The gasket comprises, between the two flanks (8, 10) in the circumferential direction of the solid bead (6), at least one row (12, 14, 16) of adjacent depressions or bead sections (18, 20, 22), which in each case form an integral contour with the solid bead (6) and are orientated in the opposite direction with respect to the solid bead (6).
摘要:
The invention discloses a metal seal with a seam, wherein the metal seal has at least one sealing regions which is delimited on two sides by a respective boundary in order to be in seal-forming contact with at least one corresponding sealing surface, wherein the seam is provided with at least one weld seam, which is characterized in that each weld seam extends only outside the boundaries of at least one sealing region, such that he metal seal at eh seam between the boundaries of at least one sealing region is unwelded over the entire thickness of the seam.
摘要:
Sub-micron-structured (nanostructured) polymer film or coatings are made by coating a substrate with a mixture of materials. One of the materials is removed using a selective solvent, leaving pores or other nanostructure. The substrate may be grooved, providing a competing nanostructure. The coating may act as an antireflective coating, optical retarder, optical diffuser, or orientation layer.
摘要:
A heating current used to inductively heat a metallic or magnetic work-piece is generated by an inverter supplied by a supply voltage. The inverter includes four switching elements arranged in an H-bridge circuit having two parallel longitudinal branches and a transverse branch. The switches are controlled so the heating current flows through the transverse branch. The diagonally opposed switching elements are switched from a conductive to a non-conductive state in a temporally staggered manner.
摘要:
A liquid crystal switchable color filter switches between three color bands and is preferably used for time-sequential devices, such as projection devices, direct view displays and video cameras. The color filter may employ circularly polarizing selective reflection bands of at least four cholesteric filters together with three liquid crystal switches and related retarder layers. In one embodiment, the handedness of the second cholesteric is equal to the handedness of the third cholesteric filter and opposite to the handedness of the first and fourth cholesteric filter and, for the blocking state of a color band, the optic axis of the corresponding liquid crystal switch is parallel or perpendicular to the polarization direction. This concept leads to improved, excellent color saturation and requires less stringent production tolerances than in the prior art. Moreover, it advantageously allows overlapping color transmission bands thus improving the light efficiency.
摘要:
A compound is of formula (I), in which: A1 to A4, E1 and E2 each independently represent hydrogen or an optionally-substituted hydrocarbon group; B1 and B2 each independently represent a single bond, an oxygen atom or an optionally-substituted hydrocarbon group; MG1 and MG2 each independently represent an optionally-substituted ring system; CG is a divalent or polyvalent chiral group. The optically active compound may be used as a doping agent for liquid crystals for a wide range of applications including solid state cholesteric filters for projection displays, circular polarisers, optical filters, etc.