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Class 138/137 - Distinct layers


Subclass of Class 138 - Pipes and tubular conduits
Definition: Device wherein the pipe wall is made up of more than one
No. of patents: 716
Last issue date: 05/15/2012


                    18  
NumberTitleIssue Date
4165765Glass fiber reinforced thermosetting resin pipe wall construction
Various pipe wall constructions comprising thermosetting resin, randomly disposed chopped glass fibers, sand, circumferentially extending continuous glass filaments, and axially extending glass fibers in various percentages in structural wall portions the...
08/28/1979
4154266Floating cargo hose
A floating cargo hose for transporting fluid from a vessel having an excellent abrasion resistance and a unique distinct color of colored urethane is manufactured by wrapping a hose body in which is embedded a fibrous sheet or a spiral wire in rubber with...
05/15/1979
4153079Flexible hose lines
A flexible hose line which may be used for loading and unloading oil tankers having a secondary fluid retaining reinforcement carcass to retain leakage and to indicate by radial expansion failure of the main carcass. The secondary carcass may be of high e...
05/08/1979
4148342Hose structure and method for making
A hose structure which is useful as a transitional piece for a connection between two elements of different diameters. The hose has a tapered bore with an oppositely tapered sleeve of deformable material outwardly of the sleeve interior to form a substant...
04/10/1979
4138503Method of making a tubular collagen casing
A method of making a tubular collagen casing includes extruding collagen gel into two sets of gel ropes, each of the sets comprising a plurality of ropes. The ropes in one of the sets are directed radially outwardly and helically in one direction to form ...
02/06/1979
4136149Molded rubber article and method
A molded rubber article is described having an exterior or surface layer which is formed of a blend including a heat setting rubbery polymer, and a halogenated polyethylene acting as an internal mold release agent during processing and also enhancing the ...
01/23/1979
4131137Composite tubular casing for processed foods and method of fabricating the casing
A composite tubular food casing comprising a substantially flattened tubular substrate of cellulosic material and a melt extruded layer of thermoplastic material bonded to the tubular substrate with a beaded seam formed in the thermoplastic material adjac...
12/26/1978
4130139Flexible hose construction and method of making same
A flexible hose construction and method of making same are provided wherein such hose construction comprises a flexible nylon-11 base tube, a braided reinforcing layer disposed around the base tube, and a layer of adhesive means between the base tube and ...
12/19/1978
4121962Method of making a hose
An irradiated polyethylene tube is supported on a mandrel with adhesive material applied against its outside surface whereupon a first tubular layer is braided against the adhesive means followed by a tubular layer of neoprene rubber followed by braiding ...
10/24/1978
4120324High pressure hose composed of elastomers and embedded reinforcements
High pressure hose made of elastomers and reinforcing inserts having an inside diameter greater than 50 mm and a unit construction in the longitudinal direction of any desired length of at least 100 m. Such high pressure hoses made by continuously constru...
10/17/1978
4117867High pressure hose composed of elastomers and embedded reinforcements
High pressure hose made of elastomers and reinforcing inserts having an inside diameter greater than 50 mm and a unit construction in the longitudinal direction of any desired length of at least 100 m. Such high pressure hoses made by continuously constru...
10/03/1978
4115616Self-sealing fuel line assembly
A self-sealing multi-laminated fuel line composite material composed of (a) a plastic fuel line, (b) a precompressed and fuel sensitive foam bonded to said plastic line, and (c) a flexible, plastic laminate bonded on top of said foam....
09/19/1978
4110061Peristaltic pump having particularly reinforced hose
A peristaltic pump, in particular for pumping concrete, cement, and other mixtures containing liquid. The pump has a hose having layers of helically wound reinforcing threads embedded in the wall thereof. The angle of pitch of the windings in one layer is...
08/29/1978
4102724Method of making a hose having an improved surface appearance
A vulcanized reinforced elastomeric hose and a method for its production wherein a layer of uncured rubber supported on a mandrel is surrounded by reinforcement filaments and thereafter vulcanized. In the same method of the invention recesses are provided...
07/25/1978
4096888Halogenated butyl interlayer for reinforced elastomeric hose articles
A composite reinforced vulcanized elastomeric hose is disclosed including a tube, an outer cover, an interlayer interposed between the tube and cover, and a reinforcement embedded in the hose wall. The outer cover and inner tube are composed of dissimilar...
06/27/1978
4093004Armored conduit
A conduit structure is provided which is comprised of layers of crosslapped oriented polyolefin material. The conduit structure is resistant to penetration by shrapnel and projectile penetration....
06/06/1978
4089360Pneumatic tire containing an irradiated laminated component
This disclosure relates to a laminate of several layers of rubber compounds. The laminate may be in sheet or strip form with various cross-sectional shapes. The layers in the laminate comprise rubber compounds, some of which contain agents which either as...
05/16/1978
4080999Fiber reinforced sandwich tube
The invention relates to a sandwich tube comprising an inner and an outer fiber reinforced layer of thermosetting resin and an intermediate layer therebetween consisting of inorganic filler material coated with thermosetting resin and obtained by spraying...
03/28/1978
4081303Pipe liner laminate and method of making a pipe with said liner
A piper liner laminate and method of making a pipe including this liner are disclosed herein. The liner comprises a central layer preferably of either polyethylene or polypropylene sandwiched between first and second layers of fibrous material, for exampl...
03/28/1978
4048362Reinforced elastomeric articles
The invention relates to a method of bonding certain aromatic polyamide to nitrile rubber compositions by applying to an aromatic polyamide a coating of a vinyl chloride polymer, preferably as a latex or plastisol, assembling the coated aromatic polyamide...
09/13/1977
4044799Cellular wall hose and method for making same
A method for simultaneously extruding and foaming a seamless, closed cell, cellular, tubular conduit by extruding through no-land die and restricting foaming action until the conduit has been extruded. The resultant conduit can be made either uni-layer or...
08/30/1977
4044187Film laminates having a reirradiated layer
The seal strength, dimensional stability, bond strength between plies, and ink adhesion of certain film laminates may be significantly increased by irradiating the substrate, forming the laminate, and then irradiating the entire laminate whereas in the pr...
08/23/1977
4041207Heat resistant rubber laminates
A heat resistant rubber laminate composed of a base layer consisting mainly of a heat resistant rubber composition and a heat resistant top cover consisting mainly of an ethylene-fluoropropylene copolymeric rubber....
08/09/1977
4035534Heat-shrinkable laminate
An article such as a tube formed of heat-shrinkable material is bonded exteriorly or interiorly to an elastomeric member to form a laminated article. The bonding preferably takes place before heating and expanding of the heat-shrinkable tube. After expans...
07/12/1977
4035454Manufacture and application of rod wraps to a fishing rod
Wraps to hold line guides on a fisherman's rod are formed as sleeve-like units by the embedment of a length of wound thread in a clear, elastomeric plastic resin, or by forming a cylindrical sleeve of elastic plastic resins. The sleeve-like wraps are expa...
07/12/1977
4007781Heat exchange system
A heat exchange system for heating a plurality of separate locations or for dissipating heat from a heat source at a region remote therefrom. A plurality of heat exchange devices in the form of flexible containers or envelopes, are mounted in heat exchang...
02/15/1977
3983525Electric fuse and tube material adapted for use as fuse casing
An electric fuse has a casing of synthetic-resin-glass-cloth laminate which includes a plurality of re-inforcement plies - of woven glass fiber cloth - to the exclusion of any non-woven mat material. There are along the wall of the casing cyclically alter...
09/28/1976
3971337Apparatus for electrostatically spraying highly electrically conductive water-based coating material
An electrostatic spray apparatus and method for spraying highly electrically conductive water-based coating material in which safety hazards are minimized. Included is a spray gun from which electrostatically charged water-based coating material is emitte...
07/27/1976
3957085Flexible articles
A flexible article, such as a hose pipe, which comprises a body including polymeric material and having a surface layer of non-woven filamentary material applied to the body, the filamentary material being impregnated with a polymeric material....
05/18/1976
3956544Tubular package
This invention relates to a tubular mold having excellent resistance to stretch. The mold is a "duplex type" flexible tubular mold comprising an outer film laminate comprising: A first film ply of cellophane having a saran film bonded to its outer and inn...
05/11/1976
3950604Heat-shrinkable articles having non-linear electrical resistance characteristics
A polymer composition containing silicon carbide of a critical maximum average particle size can be processed into heat-shrinkable articles possessing nonlinear electrical resistance characteristics. An embodiment of the invention provides a heat-shrinkab...
04/13/1976
3946905Collapsible plastic tubes
A collapsible plastic tube comprising a laminate of an inner ply and an outer ply, the inner ply being a heat flowable nonoriented thermoplastic polymer and the outer ply being a heat flowable, oriented, shrunk thermoplastic polymer....
03/30/1976
3944453Hose construction
An improved hose construction and method of forming the same wherein a reinforcement layer is bonded to a thermoplastic core by a solventless bonding layer defining an inner thermal weld portion substantially autogenous with the outer surface portion of t...
03/16/1976
3943273Electrically conducting plastic pipe system
A conducting plastic pipe system comprising a male plastic pipe part and a female plastic pipe part with conducting covering layers which are interconnected by means of a conducting sealing ring between the male and female part. In case of outer covering ...
03/09/1976
3939875Permeable flexible plastic tubing
Flexible tubing, particularly suitable for irrigation purposes, consists of a plurality of superposed, elongated, flexible strips, heat sealed along their longitudinal edges and is substantially flat when empty. At least one of said strips is thermoplasti...
02/24/1976
3934064Composite structures of knitted glass fabric and thermoplastic polyfluoroethylene resin sheet
Extensible structures are made by partially embedding a selected knitted glass fabric into a perhalopolyfluoroethylene polymer resin sheet. The embedding can be done by pressing the glass fabric into one surface of the sheet heated to a temperature at whi...
01/20/1976
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