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Pipes And Tubular Conduits > Reinforced > Corrugated

Corrugated

Corrugated patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

07/03/14 - 20140182736 - Corrugated metal pipe
A metal pipe of single piece construction including a wall formed of a single corrugated metal sheet. The sheet has opposing first and second edges extending longitudinally along the sheet. The wall includes a seam that is formed by abutting portions of the first and second edges. The seam extends...

05/22/14 - 20140137977 - Apparatus and method for making a corrugated product
The invention describes a device and method for making corrugated products. The device can be used with any substrate and includes, at least, first and second drive rollers for driving a middle substrate and a single wall corrugated product. In other embodiments the invention includes upper drive rollers, lower drive...

05/01/14 - 20140116567 - Pipe with rib and method for manufacturing pipe with rib
A pipe with a rib includes a pipe portion, and a rib portion formed inside the pipe portion. The rib portion includes a plurality of bent portions in accordance with bending of the pipe portion....

01/16/14 - 20140014221 - Corrugated metal pipe
A metal pipe of single piece includes a wall formed of a single corrugated metal sheet. The sheet has opposing first and second edges extending longitudinally along the sheet. The wall includes a seam formed by abutting portions of the first and second edges. The seam extends helically about and...

01/09/14 - 20140007972 - Corrugated metal pipe
A metal pipe of single piece construction including a wall formed of a single corrugated metal sheet. The sheet has opposing first and second edges extending longitudinally along the sheet. The wall includes a seam that is formed by abutting portions of the first and second edges. The seam extends...

06/20/13 - 20130153078 - Corrugated metal pipe
A metal pipe of single piece construction including a wall formed of a single corrugated metal sheet. The sheet has opposing first and second edges extending longitudinally along the sheet. The wall includes a seam that is formed by abutting portions of the first and second edges. The seam extends...

05/16/13 - 20130118631 - Device for manufacturing profile corrugated tube, method for manufacturing profile corrugated tube and profile corrugated tube
A device for manufacturing a flat profile corrugated tube includes a supplying portion for pushing out and supplying a molten resin material in the form of a sheet, a pair of metal molds for molding a profile corrugated tube, a driving mechanism portion capable of changing postures of the pair...

11/29/12 - 20120298248 - Tendon duct, duct connector and duct termination therefor
A duct for enclosing post tension reinforcing tendons includes a first closed circumference conduit having at least one minimum internal radius. The conduit includes at least one corrugation including two longitudinally spaced apart end members wherein a radial outer surface of each end member defining at least one external radius....

10/04/12 - 20120247604 - Directional fluid line
Fluid line and method of making fluid line that includes an inner contour structured with wave peaks and wave troughs. Each wave peak has a front flank and a rear flank, and the front flanks are structured with an inclination angle, relative to a longitudinal axis, shallower than an inclination...

04/19/12 - 20120090721 - Plastic pipe with bell
A multi-layer bell is formed from the outer shell of a multi-layer pipe in a secondary process, thereby allowing the extrusion process to be conducted at normal speeds. The bell may include a strain limiting membrane fused or mechanically secured between the outer shell extrusion layer and the inner liner...

04/05/12 - 20120080115 - Cabling system corrugated centertube umbilical
An umbilical (2) has a center tube (4) that is a steel tube, and that the cross section of the center tube (4) at the extremity of the umbilical (2) is made corrugated on a length that extends substantially from the extremity to a distance from the extremity so that...

02/09/12 - 20120031521 - Corrugated metal pipe
A metal pipe of single piece includes a wall formed of a single corrugated metal sheet. The sheet has opposing first and second edges extending longitudinally along the sheet. The wall includes a seam formed by abutting portions of the first and second edges. The seam extends helically about and...