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US 4,382,460 AGranted
Slats for assembly into door or window shutters
OwnerRam Ben-Talinventor
Life of this patent
Estimating the term…
Abstract
A slat from which door or window shutter may be composed is made of two identically profiled strips, defining between them a concavity.
Claims4
A structural member useful as a door or window closure consisting essentially of two mating identical longitudinal slats of cold-formed metal, said mating slats being assembled in facing opposed relationship in a reversed orientation relative to each other, each of said mating slats comprising:
- a first edge folded upon itself to form a recess extending longitudinally along substantially the entire length of said slat and receiving therein in fitted engagement a lip member formed in the other of said mating slats;
- a second edge located on the side of said slat opposite said first edge and formed to define a lip member extending substantially along the entire length of said slat, said lip member being arranged in fitted engagement within said recess formed along said folded first edge of said other slat;
- and
- a rib member extending longitudinally of said slat essentially along the entire length thereof and protruding laterally from one said of said slat generally perpendicularly thereto, said rib member being formed by shaping said slat bent upon itself so that said slat is formed with parts thereof extending essentially in generally parallel relationship to form said rib member as a double-walled protruberance extending outwardly from said slat along the length thereof;
- said rib member being located in each of said mating slats approximately one-third of the distance between said first edge and said second edge and closest to one only of said recess or said lip member, said rib member in each of said slats being always closest to the same one of said recess or said lip member so that when said mating slat members are assembled together, the rib member in one will extend across the interior of said structural member to the other mating slat, said structural member being thereby formed as a hollow piece having two approximately equally spaced longitudinal rib members extending across the enterior thereof with the lip member of each of said two mating slats being engaged in the recess of the other of said mating slats.
2 more elements
A method for forming a longitudinal slat of cold-formed metal, said slat being adapted to be assembled in facing opposed relationship with a second identical mating slat in reversed orientation relative thereof in order thereby to form a structural member useful as a door or window closure consisting essentially of two of said mating identical longitudinal slats, said method comprising the steps of:
- cutting a generally flat, planar strip of sheet metal into a base member having a generally longitudinal orientation with a first longitudinal edge and with a second longitudinal edge opposite said first longitudinal edge;
- folding said first edge upon itself to form a recess extending longitudinally along substantially the entire length of said slat, said recess being adapted to receive therein in fitted engagement a lip member formed in a mating identical slat;
- bending said second edge to form therealong a lip member extending substantially along the entire length of said slat, said lip member being adapted to be arranged in fitted engagement within a recess formed along a folded first edge of another identical slat when a pair of said identical slats are arranged in assembled engagement with each other;
- and
- bending said strip of sheet metal to form therein a rib member extending longitudinally essentially along the entire length of said sheet metal strip and protruding laterally from one side thereof generally perpendicularly thereto, said rib member being formed by shaping said sheet metal member bent upon itself so that said slat formed therefrom is configured with parts thereof extending essentially in generally parallel relationship to form said rib member as a double-walled protuberance extending outwardly from said sheet metal strip along the length thereof;
- said rib member being located approximately one-third of the distance between said first edge and said second edge and closest to one of said recess or said lip member so that when said slat is placed in assembled engagement with a mating slat, the rib member in one of said slats will extend across the interior of a structural member thus formed to the other of said mating slats in order thereby to enable said structural member to be formed as a hollow piece having two approximately equally spaced longitudinal rib members extending across the interior thereof with the lip member of each of said two mating slats being arranged in the recess of the other of said mating slats.
3 more elements
A longitudinal slat formed as a unitary integral member by bending a longitudinal piece of cold-formed sheet metal, said slat being adapted to be assembled with an identical mating longitudinal slat in facing opposed relationship but in a reversed orientation relative thereto in order thereby to form said two mating identical slats as a structural member useful as a door or window closure, said longitudinal slat comprising:
- a first edge folded upon itself to form a recess extending longitudinally along substantially the entire length of said slat and adapted to receive therein in fitted engagement a lip member formed in a mating identical slat;
- a second edge located on the side of said slat opposite said first edge formed to define a lip member extending along substantially the entire length of said slat, said lip member being adapted to be arranged in fitted engagement within a recess formed along a folded first edge of another mating identical slat when said slat is arranged in assembled engagement with said another identical mating slat;
- and
- a rib member extending longitudinally of said slat essentially along the entire length thereof and protruding laterally from one side of said slat generally perpendicularly thereto, said rib member being formed by shaping said slat bent upon itself so that said slat is formed with portions thereof extending essentially in generally parallel relationship to form said rib member as a double-walled protruberance extending outwardly from said slat along the length thereof;
- said rib member being located approximately one-third of the distance between said first edge and said second edge of said slat and closest to one only of said recess or said rib member;
- so that when said slat is arranged in assembled engagement with a mating identical slat with the lip member of said slat arranged in fitted engagement within the recess of said other identical mating slat and with the recess of said slat receiving therein in fitted engagement the lip member of said another mating slat, said structural member may thereby be formed as a hollow piece having two approximately equally spaced longitudinal rib members extending across the interior thereof, each of said rib members being integrally formed with one only of said identical mating slats.
3 more elements
Dependencies are inferred from the claim text.