Abrégé

A steel stud member (10) for use in supporting structures and having reduced thickness as compared with conventional studs, and having a web (12) having side edges, flanges (14) and (16) on the side edges, formed at angles to the web, the web and the flanges enclosing inside surfaces, and having outside surfaces for mounting structure, and plurality of narrow indented longitudinal ribs (20) formed in the flanges, and in the web, indented inwardly from the outside to the inside of the flanges, providing greater load bearing capacity for a given gauge of steel. Also disclosed is a method of making such a steel member.

Classes IPC  ?

• E04C 3/09 - PoutrellesSolives, fermes ou structures analogues à des fermes, p. ex. préfabriquéesLinteauxTraverses métalliques à âme découpée, p. ex. à âme formée d'éléments analogues à des barreauxFermes métalliques en treillage faits, en partie au moins, d'un matériau plié ou en bandes déformées autrement, ou encore en forme de feuille
• B21D 13/10 - Opérations permettant d'obtenir des tôles, barres ou profilés, à surface ondulée ou sinueuse selon un profil particulier
• B21D 19/00 - Mise en forme ou autres traitements des bords, p. ex. des bords des tubes
• B21D 7/00 - Cintrage des barres, profilés ou tubes
• B21K 21/04 - Formage d'articles creux à parois minces, p. ex. cartouches
• F16S 3/00 - Éléments allongés, p. ex. éléments profilésLeurs assemblagesArmatures ou grilles

Abrégé

An eccentric drive rotary stamping apparatus for forming moving sheet metal and having a die assembly (12) (14) (16) (18) moveable forward and backward along a linear path, with upper and lower dies (12) (16) on respective sides of the sheet metal (M), the dies being closeable on the sheet metal for forming , and, an eccentric rotary drive crank system (22, 24) coupled to the die assembly , and operable to move the die assembly forward and backward along the linear path, and being further operable to close the dies on the sheet metal. A further rotary drive system (50,52) assists to drive the die assembly, along the linear path. Followers (46) on the die assembly , engage guide ramps (42, 44) at just before and just after closing to maintain the linear speed of the die assembly and match it with the linear speed of the sheet metal. Also disclosed is a method of forming moving sheet metal by such apparatus.

Classes IPC  ?

• B21D 22/08 - Estampage utilisant des dispositifs ou outils rigides comportant des pièces de matrices situées sur des supports rotatifs
• B21D 37/00 - Outils en tant qu'éléments des machines couvertes par la présente sous-classe

Abrégé

A composite steel joist member made up of two steel joists each having a web defining side edges and an axis, a flange on at least one side edge, openings through said web at spaced intervals therealong, having rounded ends and parallel linear sides, portions of said web displaced from said opening remaining attached integrally to the web by bend lines formed on the linear sides of the opening along axes parallel to the web axis, and forming reinforcing channels alongside the opposite sides of the opening, with the joists being joined together back to back with their openings in registration. Also disclosed is a rim member for supporting the composite joists to form a floor structure .

Classes IPC  ?

• E04C 3/08 - PoutrellesSolives, fermes ou structures analogues à des fermes, p. ex. préfabriquéesLinteauxTraverses métalliques à âme découpée, p. ex. à âme formée d'éléments analogues à des barreauxFermes métalliques en treillage
• B21D 53/00 - Fabrication d'autres objets particuliers
• E04B 5/10 - Structures portantes de planchers, formées essentiellement d'éléments préfabriqués comportant des poutres ou solives métalliques, p. ex. poutrelles à treillis métalliques

Abrégé

A rotary forming apparatus of the type having a pair of central rotors, and one or more die carriers swingably mounted on the rotors, for repeatedly forming a sheet metal work piece moving along a linear path, rotor bearing supports for supporting the rotors at least at one end thereof, die carrier guides on the die carriers at an end thereof adjacent to the rotor bearing supports, and, at least two cam plates adjacent to each the rotor bearing support, for guiding the die carriers guides.

Classes IPC  ?

• B21D 5/08 - Cintrage des tôles le long de lignes droites, p. ex. pour former un pli simple par un procédé d'étirage dans lequel les pièces à travailler sont mises en forme par passage entre des matrices ou des rouleaux, p. ex. fabrication de profilés utilisant des rouleaux de formage