Class 138/121 - Corrugated

Subclass of Class 138 - Pipes and tubular conduits
Definition: Device having folds or corrugations in the wall thereof.
No. of patents: 510
Last issue date: 05/22/2012

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Number	Title	Issue Date
8181672	Spiral-wound diaphragm bellows, and method of making such a diaphragm bellows A diaphragm bellows includes a spiral-wound, pre-profiled metal strip having neighboring turns which are connected by a continuous welding seam in an area of an outer diameter or inner diameter of the metal strip. Neighboring flanks of the metal strip enter a region...	05/22/2012
8146620	Non-circular pipe profile A corrugated pipe having a non circular in cross section profile and at least one generally elongate wall section is improved by using a variable height corrugation in the length of the elongate wall segment. The variable height corrugation is of a greatest height a...	04/03/2012
8096326	Fluid line and method of making the same A fluid line includes at least one corrugated section having wave peaks and wave troughs and at least one tie rod arranged in at least one portion of the corrugated section and being coupled to plural wave peaks. A method of making the fluid line includes forming at...	01/17/2012
7891382	Overmolded and bendable position-retaining tubing A hollow conduit, being primarily round, or having n sides wherein n is greater than or equal to three, and process for making the conduit is described herein. The hollow conduit is comprised of a polymer inner conduit having a pair of opposed ends and an interior a...	02/22/2011
7891383	Ringed tubular sheath and device for making such a sheath Ringed tubular sheath comprising two open shells (33, 37), termed the outer (33) and inner (37) shells, both of the same diameter (D), one of which, the outer shell (33), has an opening (E1) smaller than the diameter (D) so as to e...	02/22/2011
7886774	Corrugated foundation drain The present invention relates to a corrugated foundation drain. The drain is comprised of a plurality of segments attached in an end to end fashion. Each segment has a first end and a second end, wherein the second end of one segment can be attached to the first end...	02/15/2011
7878222	Ribbed hose for milk extraction A hose used for extracting milk has an outer wall; an inner wall; at least two ribs formed on the outer wall; and at least one recess formed between said at least two ribs. A milk extraction system has a hose having an outer wall; an inner wall; a plurality of ribs ...	02/01/2011
7874319	Tube for guiding gas or liquid The invention relates to a tube (1) for guiding gas and/or liquid, particularly on an internal combustion engine, comprising a supporting body (2) and a skin (3). The supporting body (2) consists of a relatively stiff first plastic and ha...	01/25/2011
7870875	Corrugated tube A corrugated tube which can easily bend a wiring harness in one direction and can make the wiring harness hardly bend in another direction crossing the one direction at right angles. The wiring harness is made so that it can hardly bend in the other direction, so th...	01/18/2011
7717138	Composite hose with corrugated metal tube A composite hose with a corrugated metal tube has a hose body having a corrugated metal tube and an outer layer. The corrugated metal tube includes a non-corrugated straight-walled portion on an end portion thereof, and a rigid insert pipe is inserted in the straigh...	05/18/2010
7669615	Fabric layer of a bellows The subject matter of the invention is a fabric layer of a bellows, e.g., of a connection between two hinge-linked vehicles or of an aircraft passenger bridge, the fabric layer being plastically deformed by a force acting on the fabric. ...	03/02/2010
7650912	Flexible conduit element The present invention refers to a flexible conduit element for an exhaust system of a combustion engine vehicle, comprising a helically or annularly corrugated metal bellows member, an outer flexible member disposed around the bellows member and the resilient member...	01/26/2010
7562679	Resin pipe and resin molded component A filler pipe, wherein a flow path for a fluid is formed through multiple resin materials being extruded simultaneously and wherein a corrugated part is shaped through peaks and valleys disposed continuously, comprises an outer layer formed from a high density polye...	07/21/2009
7559341	Flexible tube protected against vibrations The invention concerns a flexible tube (1) comprising a corrugated pipe (2) around which are mounted a pressure resistant braid (9) of tubular shape made of an adapted material as well as an outer tubular mechanical protection (13). The i...	07/14/2009
7559342	Flexible hose and vacuum cleaner having the same A flexible hose includes a hose body and a plurality of pleats formed on an outer circumferential surface of the hose body by predetermined intervals to give flexibility to the flexible hose. Each of the plurality of pleats includes an entering portion formed to be ...	07/14/2009
7556065	Metal bellows tube, method of producing the same, and flexible tube for high-pressure fluid A metal bellow tube has sectional shapes of a ridge and a valley in a bellows-shaped tube wall of a metal bellows tube that are made to be V-shaped. As a result, a metal bellows tube with significantly improved bending fatigue resistance compared to conventional one...	07/07/2009
7490632	Flexible hose, preferably a charge-air hose for automotive vehicles The present invention relates to a flexible hose, preferably a charge-air hose for automotive vehicles, comprising at least one corrugated portion and a substantially tubular portion which is arranged at least sectionwise within the corrugated portion. In order to f...	02/17/2009
7484535	Corrugated pipe with outer layer A pipe having an axially extending bore is defined by a pipe wall including a corrugated outer wall having axially adjacent annular outwardly-extending crests separated by valleys. The pipe wall also includes a non-linear outer layer having adjacent concave portions...	02/03/2009
7478652	Fuel hose A fuel hose has multilayered construction and a flexible corrugated portion with corrugation bottom portions and corrugation peak portions. The fuel hose includes a rubber layer and a resin layer that is a laminated on an inner side of the rubber layer. The resin la...	01/20/2009
7418980	Vacuum cleaner hose The present invention relates to a vacuum cleaner hose manufactured by continuously spirally winding one row or two rows of band-shaped materials extruded with an electric wire inserted therein. The vacuum cleaner hose is formed by spirally winding and sticking a ba...	09/02/2008
7398798	Flexible sleeve liner for a convolute duct An air induction system wherein the outlet air assembly includes a sleeve-lined convolute duct. A sleeve liner is disposed within a convolute duct which spans the convolutes, wherein an attached end of the sleeve liner is attached to a non-convolute portion of the c...	07/15/2008
7367364	Fire retardant jacket for tubing A tubing assembly including a conductive corrugated tubing including convolutions of peaks and valleys and a polymer jacket disposed along a length of said corrugated tubing, the polymer jacket including a fire retardant. ...	05/06/2008
7360461	Air monitoring system having tubing with an electrically conductive inner surface for transporting air samples An air monitoring system includes a tubing having an electrically conductive inner surface. In one embodiment, the liner includes carbon based materials, such as for example carbon nanotubes. In another embodiment, a conductive layer is adhered to a substrate. ...	04/22/2008
7357968	Reinforced, high pressure, low permeation multilayer hose A reinforced, high pressure hose is disclosed for use in the transport of high pressure fluids. The hose includes a multilayered inner tube capable of prolonged exposure to fluids such as those containing hydrocarbons, and a reinforcement layer overlaying the inner ...	04/15/2008
7350826	Conduit assembly A conduit assembly, such as an electrical conduit assembly, includes a flexible convoluted tube having a non-conductive fluoropolymer interior and a conductive carbon exterior that decreases the electrical resistance of the tube. A fitting is secured to an end of th...	04/01/2008
7351005	Leaching system A leaching device having slots to frictionally engage soil to permit the introduction of water through the slots and into the soil while prohibiting the excessive passage of soil particles through the slots. A method of introducing water into soil by passing water t...	04/01/2008
7347015	Conductor marking device with receiving pockets A marking device for identifying an electrical conductor includes a planar generally annular marker body containing at least one opening for receiving the conductor, and a plurality of coplanar outwardly extending portions containing mutually isolated pockets for re...	03/25/2008
7338053	Electronic devices for luggage A wheeled transport device includes a body having a compartment configured to contain goods. Wheels are rotatably attached to a lower portion of the body, and a handle is attached to an upper portion of the body. The handle is configured to retract within a cavity d...	03/04/2008
7334609	Flexible tubular device A flexible tubular device that includes a metal wall in which are formed corrugated convolutions that define corrugated outside and inside surfaces of the device. The convolutions are perpendicular to a longitudinal axis of the device, and each convolution has oppos...	02/26/2008
7325543	Covering material for solar thermal power generating system and solar thermal power generating system formed by spreading the covering material A covering material for solar thermal power generation system, characterized in that it is made of a film which has a tensile yield strength of at least 10 N/mm2 according to JIS K7127, a solar radiation transmittance of at least 85% according to JIS R310...	02/05/2008
7322379	Flexible kink-resistant hoses A flexible kink-resistant hose configuration includes concentric tubes with longitudinal ribs. ...	01/29/2008
7318445	Fuel vapor pipe structure of fuel tank In a fuel vapor pipe structure including a plurality of cut valves for passing or cutting a fuel vapor at inside of a fuel tank, a pipe joint connected to the cut valves for communicating the fuel vapor to a canister, and a resin tube for connecting the cut valve an...	01/15/2008
RE39968	PTFE tube The present invention relates to a polytetrafluoroethylene (PTFE) tube, and more particularly to a PTFE tube for a flexible hose. In particular the invention relates to a PTFE tube having a smooth bore for use in the production of a lined hose assembly farther compr...	01/01/2008
7314066	Air distributor for a bioleaching system An air distributor for use in heap or dump leaching systems is disclosed. The air distributor includes an air pipe having a series of holes for releasing air from the pipe and one or more protective members spaced outwardly of the air holes to shield the air holes.	01/01/2008
7308912	Fuel tube A fuel tube including a laminate of an inner layer and an outer layer, the inner layer being made of a resin composition containing a PPS resin (or an MXD6 resin) as a main component but substantially containing no olefin polymer component, the outer layer being mad...	12/18/2007
7308911	Electronically detectable high-pressure hose and method of determining the location of the hose A hose is provided having at least one layer defining a tubular body with a length and an electrically conductive lead joined to the tubular body and extending along the length of the tubular body. The electrically conductive lead is adapted to receive an electrical...	12/18/2007
7287358	Device for connecting a beam to pillars or similar supporting structural elements for erecting buildings A device for connecting a beam to pillars or similar supporting structural elements in order to erect buildings, particularly multistory buildings, by means of prefabricated concrete components, the device comprising first means for connecting two end regions of the...	10/30/2007
7284573	Hose for installing loose fill insulation The present invention provides tubes for, in an exemplary embodiment, dispensing loose fill insulation. The tube comprises an inner web formed in a tubular shape and having a plurality of spaced helical projections disposed along an inner surface thereof and extendi...	10/23/2007
7281547	Multi-layered flexible tube A multi-layered tube comprising a first inner polymeric tubular structure, a second foamed polymeric structure containing a plurality of short or long reinforcing elements dispersed therein and, optionally, a third cover layer on the outer surface of the reinforcing...	10/16/2007
7267863	Film stack having under layer for preventing pinhole defects A film stack and method of forming a film stack are provided in which a first film is disposed on a substrate and a second film has an inner surface disposed on the first film. The second film has a thickness smaller than a reference thickness at which the second fi...	09/11/2007

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Class 138/121 - Corrugated