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| Number | Title | Issue Date |
| 7914231 | Leaching chamber having a diagonally ribbed top A leaching chamber having opposing inwardly and upwardly running sidewalls extending toward a top portion is provided, wherein the leaching chamber includes a plurality of peak and valley corrugations formed by the sidewalls and extending over the top portion and a ... | 03/29/2011 |
| 7500805 | Low-nest height thermoplastic leaching chamber A continuous curve arch shape cross section corrugated injection molded thermoplastic chamber is provided and includes a body having a multiplicity of peak and valley corrugations running along the curve of the arch shape, wherein the multiplicity includes opposing ... | 03/10/2009 |
| 7217063 | Latch for leaching chamber Two identical arch shape cross section chambers are joined together so that a dome shape part of one end of the chamber is overlapped by the opposing plain end of the second chamber. Thus, one chamber may pivot in the horizontal plane, for adjustment during installa... | 05/15/2007 |
| 7157011 | Vent for leach field aeration Pressurized air is flowed from a wastewater leach field conduit into and through the surrounding soil, and then to atmosphere above the soil surface, to enhance biochemical treatment of the wastewater. A vent, such as a perforated pipe or a region of porous media, b... | 01/02/2007 |
| 6959882 | Watering and aerating soil with a drip line When the dripline used for watering soil, low pressure air in the range 10–100 inch water column is flowed through a buried dripline, in alternation of with flow of water at 5 psig or more. The flow of air provides oxygen to the soil, and more widely and evenly di... | 11/01/2005 |
| 4378481 | Backers having glass particulates for electron beam hole drilling Backers for electron beam hole drilling contain glass particulates with a binder. For nickel base alloys, the glass particulates have at least 7 weight percent low temperature constituent, with a melting point less than 1500° C., and a balance of high te... | 03/29/1983 |
| 4324973 | Energy beam drilling apparatus having optical fiber link position sensor Disclosed is an electron beam drilling system wherein an optical fiber link is used to prevent deviant drilling. The position of fixtures within a vacuum chamber is monitored by alignable fiber segments. The junctions of the segments form couples which tr... | 04/13/1982 |
| 4250229 | Interlayers with amorphous structure for brazing and diffusion bonding Disclosed is an interlayer for brazing and diffusion bonding, having a portion as a continuous stratum with an amorphous structure. The amorphous stratum of the interlayer, being ductile, imparts structural integrity to the otherwise brittle alloy composi... | 02/10/1981 |
| 4247377 | Method for electrolytic etching A method for electrolytically etching metals. Nickel superalloys are etched with uniform grooves using a 10 volume percent HCl aqueous solution and periodically reversed current. An aperture containing shield is interposed between an upward facing workpie... | 01/27/1981 |
| 4246323 | Plasma sprayed MCrAlY coating An article with an improved MCrAlY coating is disclosed wherein a plasma sprayed MCrAlY coating is provided with a metallic envelope and then hot isostatically pressed to densify the coating and interdiffuse the envelope. Thus, the substrate is provided w... | 01/20/1981 |
| 4244743 | Sulfur containing refractory for resisting reactive molten metals Improved refractories for resisting attack of molten titanium aluminum and similar metals are provided by the inclusion of sulfur. Metal, oxygen, and sulfur combinations, wherein sulfur is present at from 10 to 60 atomic percent, are particularly useful. ... | 01/13/1981 |
| 4239954 | Backer for electron beam hole drilling Disclosed is an electron beam hole drilling process in which the workpiece surface where the hole exits is covered with a backer comprising particulate bonded to itself and the exit surface by a binding agent. The backer enables a hole having substantial ... | 12/16/1980 |
| 4238310 | Apparatus for electrolytic etching An apparatus for electrolytically etching a precision groove pattern in a metal workpiece. A concave shaped shield having a small aperture contains the electrode. The shield diverts gases evolved at the upward facing workpiece away from the electrode whil... | 12/09/1980 |
| 4236940 | Wear resistant titanium alloy coating The adherence and wear resistance of chromium alloy electroplates on titanium is improved by pretreating the substrate to form a chromium conversion coating, and post-treating the substrate at a temperature at about 700-820° C. (1300-1500° F.) for about... | 12/02/1980 |
| 4217190 | Method and apparatus for electrochemically finishing airfoil edges Disclosed is apparatus and method for electrochemically finishing the edges of airfoils and other thin edged objects. When the edge on an airfoil varies in thickness along its length, a tapered electrode is provided which has both a decreased diameter and... | 08/12/1980 |
| 4214042 | Titanium bearing MCrAlY type alloy and composite articles There are described MCrAlY type coating alloys having improved hot corrosion resistance, especially to sulfur and/or halide bearing compounds. In particular, improved hot corrosion resistance is achieved by the inclusion of about 1 to 12 weight percent ti... | 07/22/1980 |
| 4208222 | In situ interlayer formation for transient liquid phase diffusion bonding An interlayer for transient liquid phase diffusion bonding is provided by depositing a metallic coating on at least one of the superalloy surfaces to be bonded and boriding a portion of the metallic coating to form a working coating having an overall comp... | 06/17/1980 |
| 4190404 | Method and apparatus for removing inclusion contaminants from metals and alloys Nonmetallic inclusions and like contaminants are removed from a metal charge by melting the charge to form a molten pool on which the inclusion contaminants float and directing an electron beam onto a preselected first portion of the pool surface, said se... | 02/26/1980 |
| 4190094 | Rate controlled directional solidification method An improved method of directional solidification is provided by varying the rate of withdrawal of a casting from the hot zone of a solidification furnace according to the sense of change of the perimeter to area ratio of the casting. The rates are varied ... | 02/26/1980 |
| 4174950 | Ceramic base and cap useful in firing ceramic shell molds Disclosed is a preformed ceramic base useful in firing an open-ended ceramic shell mold having a mold base prior to metal casting. The ceramic firing base includes a working surface having a majority of flat surface portions for supporting the mold base d... | 11/20/1979 |
| 4156807 | Method for preventing burr formation during electron beam drilling Disclosed is an electron beam drilling process in which the workpiece surface first penetrated by the beam is coated with a stop-off material having the required high temperature resistance for preventing formation of burrs around the perimeter of the hol... | 05/29/1979 |
| 4153005 | Multiple electron beam vacuum vapor deposition apparatus A vacuum vapor deposition apparatus having a plurality of electron beam sources spaced about the periphery of the molten alloy pool is provided. The electron beam sources have associated therewith focusing and deflection devices for directing each electro... | 05/08/1979 |
| 4152223 | Plasma sprayed MCrAlY coating and coating method The oxidation-corrosion resistance of plasma sprayed MCrAlY overlay coatings is improved. The coating method involves plasma spraying the MCrAlY coating alloy onto a superalloy substrate, applying a chromium or aluminum envelope over the outer surface of ... | 05/01/1979 |
