A flexible chimney liner is presented having a corrugation profile with an sheet strip width of about 110 mm to about 120 mm, preferably about 114 mm and a pitch of about 45 mm to about 55 mm, preferably about 50 mm.

A flexible chimney liner is presented having a corrugation profile with an sheet strip width of about 110 mm to about 120 mm, preferably about 114 mm and a pitch of about 45 mm to about 55 mm, preferably about 50 mm.

A formed sheet metal material and methods, tools and apparatus for forming the sheet metal material in which a pattern of projections and depressions are cold worked in a first portion and, simultaneously, indicia is embossed in a second portion of the sheet material. The cold worked portion is formed with the projections and depressions configured and distributed such that lines drawn on a surface of the formed sheet material between adjacent rows of projections and depressions are not rectilinear. The indicia is indicative of the alignment between the tools.

A formed sheet metal material and methods, tools and apparatus for forming the sheet metal material in which a pattern of projections and depressions are cold worked in a first portion and, simultaneously, indicia is embossed in a second portion of the sheet material. The cold worked portion is formed with the projections and depressions configured and distributed such that lines drawn on a surface of the formed sheet material between adjacent rows of projections and depressions are not rectilinear. The indicia is indicative of the alignment between the tools.

Disclosed is a metal sheet having a first major surface and an opposite second major surface, a first end and an opposite second end, and a first side edge and an opposite second side edge. The sheet has a plurality of parallel corrugations having a length defining a first axis extending along the sheet, a width defining a second axis extending across the sheet, and a depth defining a third axis extending through the sheet. The corrugations are formed by roll forming of the metal sheet. In transverse cross section, each of the corrugations comprises a substantially convex portion and a substantially concave portion. The substantially convex and concave portions each comprise a plurality of substantially linear portions with curved transition portions therebetween. The curved transition portions have a radius sufficiently small to cause plastic deformation of the metal sheet during roll forming of the corrugations. The substantially convex and concave portions each approximate a smooth curve.

A panel of the passenger compartment of a vehicle, such as a dash panel, and a method of making a panel with reduced radiated panel noise. A panels of the passenger compartment of a vehicle have committed regions that are formed to receive assembled components, welds and fasteners. Interstitial regions are available between the committed regions that are formed to include a plurality of raised surface features and a plurality of recessed surface features for reducing radiated panel noise. A method is disclosed for forming a plurality of raised surface features and a plurality of recessed surface features in the interstitial regions that increase the stiffness of the interstitial regions to reduce radiated panel noise.

An article of furniture may include a component such as a frame, leg, or support. The component may be constructed from a strip of material and the strip of material may include a strip length, a strip width, and a strip thickness. The component may include a longitudinal welding joint that may be disposed between a first strip end or a first strip side and a second strip end or second strip side. A profile may be embossed into a surface of the strip of material and the component may be manufactured in a continuous inline roll forming process.

A formed sheet metal material and methods, tools and apparatus for forming the sheet metal material in which a pattern of projections and depressions are cold worked in a first portion and, simultaneously, indicia is embossed in a second portion of the sheet material. The cold worked portion is formed with the projections and depressions configured and distributed such that lines drawn on a surface of the formed sheet material between adjacent rows of projections and depressions are not rectilinear. The indicia is indicative of the alignment between the tools.

A formed sheet metal material and methods, tools and apparatus for forming the sheet metal material in which a pattern of projections and depressions are cold worked in a first portion and, simultaneously, indicia is embossed in a second portion of the sheet material. The cold worked portion is formed with the projections and depressions configured and distributed such that lines drawn on a surface of the formed sheet material between adjacent rows of projections and depressions are not rectilinear. The indicia is indicative of the alignment between the tools.

A method of manufacturing a washer capable of improving a material yield is provided. The method includes: a preparation step of preparing a longitudinal member which includes an upper corrugated portion and a lower corrugated portion including crest portions formed on at least one of an upper surface and a lower surface and valley portions continuous to the crest portions in the right-left direction; and a deformation step of deforming the longitudinal member such that the upper surface and the lower surface are arcuate as viewed in the direction from the front to the rear.