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| Number | Title | Issue Date |
| 4009734 | Coiled tubing A flexible self-retracting coiled tubing having desirable recoil strength and elastic memory is described. The coiled tubing is adaptable especially as a self-retracting air tube for transmitting fluids under pressure to pneumatic equipment. The coiled tu... | 03/01/1977 |
| 4010298 | Underground irrigation devices and methods of making and using the same A perforated pipe method of making a perforated pipe suitable for subsurface irrigation laterals by forming indentations and perforations in indentations of sheet material then rolling the sheet material into a tube or pipe.... | 03/01/1977 |
| 4009736 | Sandwich wall glass fiber reinforced construction and method of making same A sandwich wall for pipes, tanks, and the like fluid confining uses, wherein concentric inner and outer glass fiber reinforced plastic skins or shells are separated from one another by essentially radial ribs integrated into the shells to form a monolithi... | 03/01/1977 |
| 4003173 | Wall construction We have found that if we add a polyhydric phenolic compound such as resorcinol to monohydric phenolic resin/cement systems, we can shorten the gel time sufficiently to use the systems in producing walls. The walls generally are cylindrical and serve to co... | 01/18/1977 |
| 4003408 | Underground irrigation porous pipe A porous pipe primarily of rubber and synthetic rubber reclaimed from rubber tires, ground to a relatively small granular size, with metal removed; such as, for example, would pass through a 30-mesh screen, process-mixed through a pipe extruder, with a mu... | 01/18/1977 |
| 4003581 | Field dressable inflatable packer A field dressable inflatable packer which includes a resilient inflatable sleeve formed of a rubber tube having a plurality of spaced-apart cord members extending longitudinally over the entire length of the tube and clamp means for disconnectably connect... | 01/18/1977 |
| 4000760 | Plastic hose having embedded reinforcing braid A hose includes a hollow plastic core having an indirectly heatable agent bonded to the exterior thereof by a heat seal. A reinforcing net is embedded in the agent and the composite structure covered with a coating.... | 01/04/1977 |
| 3996968 | Tubing articles A tubing article is fabricated from a fluid permeable fibrous plexifilamentary polyolefin material having a porosity &3xb5; of 0.5 to 0.7, a contact angle of greater than 85°, and a Gurley-Hill porosity in the range of 4 to 70 sec/100 cc. The tubing is p... | 12/14/1976 |
| 3990479 | Method of making radiation cured elastomeric articles from thermoplastic elastomers and articles made therefrom The present invention relates to methods for processing curable thermoplastic elastomers and particularly to flexible, shaped articles made therefrom which have improved high strength, radiation and temperature resistance and electrical characteristics us... | 11/09/1976 |
| 3987821 | Gas-filled thermometer A Bourdon tube sensing element for a fluid-filled temperature gauge is made by inserting strips of silicone rubber into a partially flattened tube, especially one of beryllium copper, which is shaped on a fixture or mandrel. The shaped tube is subjected t... | 10/26/1976 |
| 3986528 | Reticulated tube of reinforced ceramic fibers A reticulated tube of reinforced ceramic fibers is provided as a catalyst carrier for use in the catalytic conversion of internal combustion engine exhaust fumes. The tube is comprised of multiple layers of continuous yarn of selected ceramic fibers which... | 10/19/1976 |
| 3983906 | Impression packer sleeve An impression sleeve for use in an impression packer comprising a smooth rolled sheet adapted to be connected on the outside of a packer to form an impression cover therefor, said sheet composed of about 60% to 80% by weight synthetic nitrile rubber, abou... | 10/05/1976 |
| 3982904 | Metal rings made by the method of particle ring-rolling The annular space in a doughnut type metal can is filled with metal particles, the can sealed to constitute an annular workpiece, and the piece hot ring-rolled for expansion to an integrated metal ring of comparatively large diameter.... | 09/28/1976 |
| 3983525 | Electric 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 |
| 3980104 | Hose or pipe for sprinkling or irrigation A hose or pipe for sprinkling liquids, e.g. water or liquid manure, has oet orifices along its length. These orifices are located in an elastically deformable portion of the hose or pipe. The stress-free shape of the elastic portion is so chosen that whe... | 09/14/1976 |
| 3977227 | Method of cold extruding ductile cast iron tube Annular articles are produced by cold extruding a tubular ductile cast iron piece through a female die to desirably change the shape of at least an axial portion of the piece. The invention is based on the discovery that the nodular carbon content of duct... | 08/31/1976 |
| 3967651 | Adhesives coatings and laminates utilizing ethylene copolymers and coal-tar pitch Thermoplastic compositions of matter comprising coal-tar pitch and a material selected from (1) a terpolymer of ethylene, vinyl acetate, and an ethylenically-unsaturated carboxylic acid and (2) a mixture of copolymers of ethylene and vinyl acetate and of ... | 07/06/1976 |
| 3967560 | Bending beam and method of making same Bending beam arrangement for use in supporting elevated trains and the like, and method of making same. The profile member beam is formed as a composite structure having steel profilemember and a concrete profile member connected thereto. The concrete pro... | 07/06/1976 |
| 3964873 | Heating device having dumbbell-shaped reaction tubes therein A heater tube for use in a fluid heating device, which is used, for example, as a thermal decomposing device of hydrocarbons. The heater tube has a dumbbell shape in cross section.... | 06/22/1976 |
| 3963055 | Self-sealing fuel line A conduit for a volatile fluid comprises principle lengths of a hard material having a relatively high tensile strength interrupted by rings of a soft ductile material. When the tube is subjected to an impact or excessive forces sufficient to cause ruptur... | 06/15/1976 |
| 3963546 | Method of making a multiple ply wood article A multiple ply wood article having a first wood veneer ply defining a generally tubular shape, which may be generally cylindrical, with a pair of confronting ends providing a first seam. A second wood veneer ply defining a generally tubular shape generall... | 06/15/1976 |
| 3963654 | Impression material for use in an impression packer An impression packer for use in obtaining impressions in wells and having an impression sleeve formed of a mixture of partially curved synthetic nitrile rubber, natural rubber smoked sheet, silica powder and rubber processing oil.... | 06/15/1976 |
| 3961486 | Pipe for sticking down drains into the ground A tube for sticking stripformed drains into the ground has a predetermined fixed profile of rhombic cross section made by pressing two opposite corners of a square tube towards each other.... | 06/08/1976 |
| 3957087 | Pin and truss cylinder construction A strong modular cylinder is made to a selected length by using rods through rings and spacers to tension the cylinder and helical truss rods to give further strength. The ring configuration provides a large open area which can be compartmented for adapta... | 05/18/1976 |
| 3954421 | Alloys for high creep applications There is disclosed a ferritic alloy having a high creep resistance particularly suitable for use in the castings, the welding material, and welds of the casings and conductors of apparatus operating at high temperatures, typically steam turbines operating... | 05/04/1976 |
| 3953270 | Manufacture of reinforced elastomeric hose This invention comprises a method for manufacturing elastomeric high pressure hose having reinforcement in the form of braided or spiral wrapped textile yarns between extruded inner and outer elastomeric layers. The method includes the steps of extruding ... | 04/27/1976 |
| 3953628 | Process for making pitch impregnated articles Disclosed is a pitch impregnant composition comprising coal tar pitch, oxidized, or unoxidized petroleum pitch with stearic acid, and particulated metallic pigments including copper, aluminum, steel, silver, iron, tin, nickel and zinc metals and copper-zi... | 04/27/1976 |
| 3952370 | Loading tube sleeve for use with an encasing machine A loading tube sleeve for use with an encasing machine having a stuffing tube is disclosed herein together with the method of preparing the natural casings so that they may be inserted into the machine. The sleeve comprises an elongated hollow member form... | 04/27/1976 |
| 3948289 | Flow regulators It is known to construct fluid dispensing structures which utilize tubes or conduits which expand or contract in cross-section in accordance with the internal pressure of a fluid within such a tube or conduit in combination with one or more flow control m... | 04/06/1976 |
| 3948294 | Impact-protective coating for plastic pipe An energy-absorbing protective coating is bonded to the exterior of a plastic pipe. Preferably, the coating is a layer of low-cost, crushable, multicellular, inorganic particles, such as natural volcanic lightweight aggregate, expanded shale, expanded cla... | 04/06/1976 |
| 3946762 | Underground irrigation system An irrigation or drainage system is provided comprising one or more conduits having radially positioned spaced apertures in the walls thereof, the system being otherwise closed except for an inlet/outlet aperture. The exterior of the conduits is covered b... | 03/30/1976 |
| 3946905 | Collapsible 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 |
| 3941157 | High strength multiple passageway plastic conduit Conduit means characterized by having a plurality of parallel adjacent, longitudinally extending passageways within an exterior wall and having longitudinally extending ribs extending longitudinally of and exterior to the exterior wall for high flexural s... | 03/02/1976 |
| 3936417 | Coilable polyvinyl chloride products and methods and compositions for producing the same Polyvinyl chloride pipe capable of being coiled and uncoiled under conditions involved in installing under ground by plowing in, and having characteristics meeting requirements necessary for use in natural gas distribution, and compositions and methods fo... | 02/03/1976 |
| 3934064 | Composite 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 |
| 3930377 | Ice transport system A conduit structure for use in an ice transport system consisting of a plurality of individual conduit members, the adjacent ends of which are interconnected by conduit couplings, the conduit structure being of the one-piece uniform cross-section construc... | 01/06/1976 |
| 3930627 | Radiation shielding and gas diffusion apparatus A device for shielding a heated surface from infrared detection through an exhaust opening adjacent the heated surface which comprises an exhaust gas conducting member adapted to receive heated exhaust gases from the exhaust opening with the member having... | 01/06/1976 |
| 3930522 | Structural ceramic article and method of making same Sintered ceramic articles having a high surface area-to-weight ratio and containing a plurality of ducts that extend through the article to permit fluid flow therethrough are prepared by forming an extrudable admixture of pulverized ceramic material. The ... | 01/06/1976 |
