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| Number | Title | Issue Date |
| 7347214 | Rotary shaft sealing mechanism and liquid processing apparatus The present invention provides a rotary shaft sealing mechanism having the seal between the rotary shaft and the seal ring improved, and a liquid processing apparatus including the rotary shaft sealing mechanism. The cleaning processing apparatus 1 com... | 03/25/2008 |
| 7198456 | Floating head reaction turbine rotor with improved jet quality A rotary jetting tool including a pressure-balanced rotor, which is achieved using a vented volume. Axial movement of the rotor relative to the housing caused by pressure imbalances acting on the rotor selectively uncovers or opens a vent that places the volume in f... | 04/03/2007 |
| 7117961 | Dynamic seal with soft interface A device and method for dynamically sealing between rotatable members such as a rolling cone of a rock bit. The assembly includes a seal ring having a facing surface of a relatively hard material, such as hardened steel or tungsten carbide, and a second seal ring of... | 10/10/2006 |
| 6802468 | Water-sealing component assembly Nut that screws together with pinion gear, and bearing that is arranged on the inner circumferential side of the nut, are provided on the front of a spinning-reel rotor. Pressing member is mounted on the front faces of the nut and bearing, such that it abuts on oute... | 10/12/2004 |
| 6412784 | Split face mechanical seal system According to a preferred embodiment, a mechanical face seal assembly comprises four generally ring-shaped members and plural spring devices. The first ring-shaped member is directly fastened (e.g., bolted) to the flanged structural section located at the ... | 07/02/2002 |
| 6257589 | Aerospace housing and shaft assembly A seal assembly having a first seal ring of a generally annular shape and defining radial and circumferential directions, and a second seal ring positioned in facing relation to the first seal ring. One of the first seal ring and the second seal ring incl... | 07/10/2001 |
| 6247545 | Single energizer face seal for rocks bits with floating journal bearings The present invention is a self adjusting, volume balanced, single energizer rigid face seal for rolling cutter drill bits with floating journal bearings. Volume balancing is accomplished by utilizing a floating static seal between the rigid face seal rin... | 06/19/2001 |
| 5952080 | Bearing having micropores, and design method thereof A method for designing bearings, of improved performance, the load-bearing surfaces of which feature micropores about 2 to 10 microns deep and, preferably, aspect ratios on the order of 7 to 20. The hydrodynamic pressure distribution of a suite of bearing... | 09/14/1999 |
| 5851014 | Slide ring seal assembly for the running gears of track-laying vehicles In a slide ring seal assembly having slide rings comprised of a casting material for running gears of track-laying vehicles and construction machinery, the improvement being slide rings composed of a gray cast iron alloy having a pearlitic matrix structur... | 12/22/1998 |
| 5792492 | Optical disk molding apparatus equipped with liquid sealing means An optical disk molding apparatus is provided which includes a fixed side mold assembly and a movable side mold assembly. Each mold assembly has a mounting plate, a disk cavity plate, a temperature control liquid passage, and a temperature control liquid ... | 08/11/1998 |
| 5692756 | Refrigeration compressor and compressor seal A refrigeration compressor including a compressor housing, a compressor shaft rotatably positioned within the housing, a refrigerant positioned within the housing, a face seal operatively positioned between the housing and the shaft, and a lip seal operat... | 12/02/1997 |
| 5567380 | Rotary retort heat treating furnace seals The present invention provides a seal ring assembly for sealing a discharge end of a rotary retort heat treating furnace. The furnace contemplated by this invention has an outer furnace shell, a retort chamber, a rear plug, a cone casting, and a support r... | 10/22/1996 |
| 5503942 | Inorganic skin film A slide surface construction which is an inorganic skin film formed of an aggregate of Fe crystals having a body-centered cubic structure. The aggregate includes a large number of {222} oriented Fe crystals with their {222} planes (by Miller indices) orie... | 04/02/1996 |
| 5368314 | Contactless pressurizing-gas shaft seal A high pressure sealing arrangement of the type in which a rotor sealing ring end face defines a gas pressure with a stator sealing ring end face has a functional gap between a cylindrical portion of the seal housing and the stator sealing ring bridged by... | 11/29/1994 |
| 5251914 | Sealing assembly for relatively movable members A sealing assembly for relatively movable, e.g., rotating or reciprocating, members with a plurality of surfaces defining an annular space having a longitudinal axis, at temperatures up to about 1000° F., comprises first and second annular rings of a har... | 10/12/1993 |
| 5145345 | Magnetically actuated seal for scroll compressor Seal structure for a scroll compressor is provided with localized magnetic surfaces. The seal is carried by one member and the magnetic surface coacts with a facing ferromagnetic surface to provide a seal therebetween even when the members are axially dis... | 09/08/1992 |
| 5092612 | Contactless pressurizing-gas shaft seal A high pressure sealing arrangement of the type in which a rotor sealing ring end face defines a gas pressure with a stator sealing ring end face has a functional gap between a cylindrical portion of the seal housing and the stator sealing ring bridged by... | 03/03/1992 |
| 5040956 | Magnetically actuated seal for scroll compressor A back pressure chamber seal for use in a scroll type compressor that is located between the adjacent surface on the back of the orbiting scroll and the machine casing. Seals are loosely received in endless grooves formed in one of the two adjacent surfac... | 08/20/1991 |
| 4934254 | Face seal with long-wearing sealing surface Mechanical seals are imroved in wear properties, erosion, corrosion and galling resistance by forming a diffusion coating in the seal structure surface comprising an intermetallic compound of the seal structure iron, nickel or cobalt base metal and one or... | 06/19/1990 |
| 4871297 | Reactor coolant pump sealing surfaces with titanium nitride coating A pump has a shaft and a housing containing pressurized fluid and employs a rubbing-type sealing assembly for sealably and rotatably mounting the shaft within the housing. The sealing assembly includes an annular runner mounted around the shaft for rotati... | 10/03/1989 |
| 4834400 | Differential surface roughness dynamic seals and bearings A dynamic seal or bearing interface having areas with different roughnesses. The different surface areas both provide asperity tip load support for the opposing interface.... | 05/30/1989 |
| 4824123 | Mechanical face seal for rock bits A metal-to-metal seal for a rotary cone rock bit consists of pre-lapped metal sealing surfaces formed on opposing seal rings prior to assembly of the seal rings into seal cavities formed between the rotary cones and their respective journal bearings. A fi... | 04/25/1989 |
| 4822057 | Mechanical face seal for rock bits A metal-to-metal Belleville seal for a rotary cone rock bit consists of pre-lapped metal sealing surfaces formed on opposing seal rings prior to assembly of the seal rings into seal cavities formed between the rotary cones and their respective journal bea... | 04/18/1989 |
| 4765632 | Lubricated rotary shaft seal A lubricated rotary seal mounted between a shoulder of a rotary shaft and a face plate through which the shaft end extends has a ring-shaped body that fits on the shaft end and partially overlaps the shaft shoulder. A porous bearing washer on the face of ... | 08/23/1988 |
| 4759554 | Mechanical face seals A mechanical face seal comprises a first seal face member associated in fixed relationship and sealed with respect to one component, a second seal face member associated in fixed rotational relationship and sealed with respect to a second component and a ... | 07/26/1988 |
| 4747604 | Rotary shaft seal for drill bit cutters A rotary shaft seal for the rotary cutter of a each boring drill bit includes a fixed seal ring fitted securely in the cutter and having an end face which includes a first tapered surface, a floating seal ring having an end face, which includes a second t... | 05/31/1988 |
| 4722534 | Face seal with automatic face convergence means A controllable mechanical seal for sealing a rotating body relative to a housing of a fluid device. The mechanical seal includes a pair of seal rings supported in juxtaposed relation in said housing. Each seal ring has a cylindrical outer surface and a ra... | 02/02/1988 |
| 4662657 | Flow system A fluid swivel system of the type suitable for use with a single point mooring system and the like includes mandrel structure that defines a through flow path from a coupling to a port in an outer cylindrical interface surface, a port in the outer interfa... | 05/05/1987 |
| 4589822 | Centrifugal blood pump with impeller A centrifugal blood pump has an impeller with a hub, a blade support ring and alternating long and short blades. A tapered seal between a pump housing wall and a hub of an impeller which provides a fluid tight seal interface surrounding a shaft. The long ... | 05/20/1986 |
| 4586719 | Mechanical seal A single or multiple stage mechanical seal assembly in which one seal ring is resiliently coupled to a rotatable shaft and the other seal ring is resiliently urged toward the first seal ring by axially-arranged identical springs received in spring pockets... | 05/06/1986 |
| 4555117 | Liquid shaft packing having a reduced slide ring temperature A liquid packing for shafts comprises a seal ring rotating at the machine speed, and a non-rotating seal ring which is tightly fitted to the housing and axially yielding. The rotating ring is made of a material of high thermal conductivity, high strength ... | 11/26/1985 |
| 4513977 | Steel floating seal with remelted deposit-alloyed wear surfaces A floating seal provided at its seal face with a hardened portion, in which the body of the floating seal is made of steel, and in which the sealing member is provided at its seal face with a deposit-alloyed surface obtained by surface remelting.... | 04/30/1985 |
| 4511149 | Mechanical seal with cylindrical balance sleeve A mechanical seal assembly comprising rotatable and stationary seal rings with faces opposing one another. Means are provided to insure a pressure balance on the outside surface and on the inside surface of the softer seal ring, so that this seal ring doe... | 04/16/1985 |
| 4386969 | Ferrous alloy and abrasion resistant articles thereof An abrasion resistant alloy consists essentially of (by weight): with not substantially more than trace quantities of sulfur, phosphorous and tungsten. The alloy is suitable for forming into sealing rings of grit seal assemblies, which rotate relative to one a... | 06/07/1983 |
| 4376540 | Gas seal for shafts with a compensating ring A gas seal for a rotatable shaft of a housing which comprises, a first rotatable dimensionally stable seal ring connected to the shaft. A diaphragm is connected to the housing which exerts an axial bias on a second rotatable seal ring. The bias of the dia... | 03/15/1983 |
| 4365815 | Means providing coolant between elements of radial face seals For cooling the working face of mechanical working elements, such as bearings, rotary seals and friction devices, the cooling fluid flows through a passage which is located behind the working face and contains a porous thermally-conductive mass having int... | 12/28/1982 |
| 4361334 | Compression sealed composite seal seat with cooling passages A stationary seal seat for a package rotary mechanical seal is formed by compression sealing a ceramic ring within a glass coated metal ring. The ceramic provides the seat for a rotating seal member and the metal ring provides the surfaces which receive t... | 11/30/1982 |
| 4275891 | Face type shaft seal for liquid metal pumps A face type shaft seal for liquid metal pumps comprises a non-contacting seal in which at least one seal face has spiral grooves therein. The seal faces are gold plated and designed so that the liquid metal wets the seal faces and creates a thin layer of ... | 06/30/1981 |
| 4153477 | Friction stressed machine parts of cast iron with ledeburitic bearing surface and methods for their production A friction stressed machine part of cast iron with a ledeburitic-containing bearing surface contains 0.1 to 10 area percent of predominantly nodular-shaped graphite in the ledeburitic-containing bearing surface. A number of methods for producing such a ma... | 05/08/1979 |
| 4143882 | Rubbing contact fluid seal A fluid seal is composed of an upper oxidized sintered metallic layer and a lower unoxidized sintered metallic layer integral with the upper layer. The upper layer is in rubbing contact with the radial surface of a rotating matrix of the regenerator porti... | 03/13/1979 |
