 Snow plowable pavement marker |
| The embodiments of the invention in which an exclusive property or privilege is claimed are defined ... |
|
| Rotary power trowel |
| It is accordingly an object of the present invention to provide a rotary power trowel having a ... |
|
| Drive mechanism |
| I claim: 1. Apparatus (10), comprising: a frame (18) including a yoke (16); a compacting drum (14) ... |
|
| Soliton laser |
| Soliton Effects Before discussing in detail my invention, it will be instructive to consider first ... |
|
| Short optical pulse generator having a looped directional coupler external cavity |
| With reference to FIG. 1, laser diode 101 is a typical, commonly available, laser diode chip ... |
|
| In-line fiber optic memory |
| What is claimed is: 1. A fiber optic recirculating memory, comprising: a length of optical fiber, ... |
|
| Optical signal network with node by-pass switching capability |
| We claim: 1. An optical signal network having plural optical signal input/output nodes ... |
|
| Laminates |
| What we claim is: 1. A laminated panel which comprises a core of rigid isocyanurate based foam ... |
|
| Anamorphic attachment for purpose of filming and reproduction to be used together with a basic lens |
| FIG. 1a represents the most simple embodiment possibility of the attachment of this invention and, ... |
|
|
Semi-conductive layer-containing reinforced pressure hose and method of making same
| Details |
Inventors: Russell, David D.;
Assignee: Eaton Corporation (Cleveland, OH)
Primary Examiner: Cannon; James C.
Assistant Examiner:
Attorney, Agent or Firm: McCloskey; R. J., Chrow; A.
A fibrous reinforced flexible hose for conveying fluids such as paint under pressure is provided with a composite core tube preferably simultaneously co-extruded from two or more synthetic polymers which are in intimate contact with each other. The inner layer of the composite core tube is nylon or other chemical resistant polymer which may or may not be cross-linked and the outer layer is a cross-linked electrically semi-conductive synthetic polymer layer which serves as a ground for static electricity. In the process of making the hose, the semi-conductive layer is preferably cross-linked by irradiation as a means of improving its higher temperature performance capabilities and to minimize changes in the electrical resistance of the semi-conductive layer that might arise from dynamic use of the hose. |
|
DETAILED DESCRIPTION What is claimed is: 1.
A flexible hose for conveying and spraying a fluid which comprises a core tube through which the fluid flows under pressure, said core tube having a laminated wall with a first extruded lamina of a synthetic polymer adjacent to the fluid which resists chemical attack by the fluid and which conducts static electricity radially outwardly from the fluid and a second lamina disposed radially outwardly about the first lamina, said second lamina being a semi-conductive polymer which is in electrical contact with the first lamina, said semi-conductive polymer being a cross-linked polymer, said laminae being co-extensive throughout the length of the hose, at least one layer of fibrous material disposed about the core tube and reinforcing it against bursting under pressure from the fluid, a substantially non-electrical conducting synthetic polymer sheath about the said fibrous material, and a spray nozzle on one end of the hose in electrical conducting contact with said semi-conductive lamina and electrically connected to ground.
2.
The flexible hose of claim 1 wherein the outer semi-conductive layer is an extruded layer.
3.
The flexible hose of claim 1 wherein the extruded inner layer and semi-conductive outer layer are melt fused to provide the intimate contact therebetween.
4.
The flexible hose of claim 1 wherein the synthetic polymeric material of the extruded inner layer is a nylon and the cross-linked semi-conductive outer layer material is a polyurethane.
5.
The flexible hose of claim 1 wherein the semi-conductive outer layer polymeric material contains carbon particles.
6.
The flexible hose of claim 1 wherein the outer layer of cross-linked semi-conductive polymeric material has an electrical volume resistivity at 20.
degree.
C.
of not more than about 2000 ohm-cm.
7.
The flexible hose of claim 1 wherein the polymeric material of the inner layer is a nylon and the outer semi-conductive layer is an extruded layer of a polyurethane composition containing carbon particles
|
| Related patents |
|
|
Layered fuel-line hose
As seen in the drawing a tubing for use in a motor vehicle conveying an alcohol-containing liquid, for instance, fuel, comprises a thick outer layer 1, a thick ...
|
|
|
Transparent pre-cure coating for rubbery polymers
What is claimed is: 1. A pre-cure paint comprising: a. a rubbery diene polymer, b. hydrated amorphous silica, c. a zinc salt or zinc complex which is soluble in the ...
|
|
|
Novel coating compositions
I claim: 1. An improved aqueous, resinous coating composition comprising: (a) an acidic resin having an acid number of from 30 to 400, said resins being derived from ...
|
|
|
Paper coating composition of unsaturated acid and mono-olefin polymerized in the presence of a preformed styrene/butadiene latex
OF THE INVENTION The paper coating compositions of the present invention employ as a binder component therein a particular type of alkali-sensitive synthetic copolymer ...
|
|
|
Electrostatic paper base and method of making the same
OF THE INVENTION AND SPECIFIC EXAMPLES As indicated above, the present invention contemplates the application of an organic, synthetic, polymeric, hydrophobic, ...
|
|
|
Aqueous emulsion coating for individual fibers of a cellulosic sheet providing improved wet strength
I claim: 1. A basic emulsion composition, that can provide water resistance to a cellulosic sheet while preserving its affinity with aqueous compositions, which ...
|
|
|
Latex based adhesive composition containing ammonium zirconium carbonate for the enhancement of hot, green bond adhesive properties of paperboard and corrugated board
What is claimed is: 1. An aqueous adhesive consisting essentially of: (a) starch present in an amount of from about 20 to about 95 dry parts per hundred parts dry ...
|
|
|
Method of manufacturing gloss paper
What is claimed is: 1. A method of manufacturing gloss coated paper comprising the steps of: coating a composition comprising a pigment and an adhesive on a base paper; ...
|
|
|
Repulpable, reinforced corrugated containers
OF THE PREFERRED EMBODIMENT Referring to the drawings and specifically to FIG. 1 thereof, there is shown a corrugated bulk bin type container 10 comprising bottom ...
|
|
|
Disc medium substrate and disc device
We claim: 1. A substrate for disc medium for use in a recording and/or reproduction system employing a floating head, comprising: a molded thermoplastic disc medium ...
|
|
|
Optical Systems 
