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US 5,551,135 AGranted
Method of fabricating a metal purlin and method of fabricating a building therewith
OwnerJohn Powers, IIIinventor
Life of this patent
Estimating the term…
Abstract
A fabricated building including a pair of metal sidewalls positioned in an upright spaced apart relationship with a plurality of metal purlins engaged with an upper edge of one of the metal sidewalls so that the plurality of metal purlins extend between the metal sidewalls and maintain them in the upright position.
Claims9
A method of fabricating a metal purlin comprising the steps of:
- providing a sheet of metal;
- cutting the sheet into elongated strips having a predetermined width with longitudinal edges extending the length thereof;
- rolling the edges of one of the strips into a channel having a generally C-shaped cross-section with a substantially flat web;
- cutting a plurality of longitudinally extending and transversely spaced apart slots in the web, the slots further being staggered and longitudinally spaced apart;
- expanding the web of the channel by expanding the width of the slots;
- corrugating the expanded web;
- providing a pair of second sheets of metal;
- rolling one edge of each of the second sheets to form an inverted channel, with one edge of the inverted channel defining a vertical plate having an inner surface and an outer surface, the inner surface facing the inverted channel, the vertical plate extending downwardly a distance greater than the width of the expanded web;
- and
- affixing the outer surface of the vertical plate of each of the inverted channels to a respective end of the C-shaped channel.
7 more elements
A method of fabricating a building comprising the steps of:
- providing a sheet of metal;
- cutting the sheet into elongated strips having a predetermined width with longitudinal edges extending the length thereof;
- rolling the edges of one of the strips into a channel having a generally C-shaped cross-section with a substantially flat web;
- cutting a plurality of longitudinally extending and transversely spaced apart slots in the web, the slots further being staggered and longitudinally spaced apart;
- expanding the web of the channel by expanding the width of the slots;
- corrugating the expanded web;
- providing a pair of second sheets of metal;
- rolling one edge of each of the second sheets to form an inverted channel, with one edge of the inverted channel defining a vertical plate having an inner surface and an outer surface, the inner surface facing the inverted channel, the vertical plate extending downwardly a distance greater than the width of the expanded web;
- affixing the outer surface of the vertical plate of each of the inverted channels to a respective end of the C-shaped channel to form a metal purlin;
- providing a pair of metal sidewalls and positioning the metal sidewalls in an upright spaced apart relationship;
- and
- engaging each inverted channel with an upper edge of a respective one of the metal sidewalls so that the metal purlin extends between the metal sidewalls and maintains them in the upright position.
9 more elements
A method of fabricating a metal building comprising the steps of:
- providing a metal purlin including the steps of
- providing a sheet of metal,
- cutting the sheet into elongated strips having a predetermined width with longitudinal edges extending the length thereof,
- rolling the edges of one of the strips into a channel having a generally C-shaped cross-section with a substantially flat web,
- cutting a plurality of longitudinally extending and transversely spaced apart slots in the web, the slots further being staggered and longitudinally spaced apart,
- expanding the web of the channel by expanding the width of the slots,
- corrugating the expanded web,
- providing a pair of second sheets of metal,
- rolling one edge of each of the second sheets to form an inverted channel, with one edge of the inverted channel defining a vertical plate having an inner surface and an outer surface, the inner surface facing the inverted channel, the vertical plate extending downwardly a distance greater than the width of the expanded web, and
- affixing the outer surface of the vertical plate of each of the inverted channels to a respective end of the C-shaped metal channel;
- providing a pair of metal sidewalls and positioning the metal sidewalls in an upright spaced apart relationship;
- and
- engaging each inverted channel with an upper edge of a respective one of the metal sidewalls so that the metal purlin extends between the metal sidewalls and maintains them in the upright position.
10 more elements
Dependencies are inferred from the claim text.