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| Number | Title | Issue Date |
| 8056903 | Rod sealing system In a rod sealing system, which comprises a buffer ring, a rod seal, and a dust seal, provided successively in this order from a fluid hydraulic side toward the outside in an annular clearance between two members in reciprocating motion, the buffer ring is made up of... | 11/15/2011 |
| 7395593 | Method of applying outer insulation to a stator bar of an electric machine A method of applying an outer insulation to a stator bar to form an insulated stator bar. The method entails extruding at least one extruded member that will form the outer insulation. The extruded member has an opposing pair of edges that are parallel to the longit... | 07/08/2008 |
| 7231766 | High pressure intensifying piston valve The present invention includes a piston valve for charging and discharging a first fluid chamber. The piston valve includes a piston shaft and a ring comprising a seal element. The piston shaft has a first end and a second end with the first end including a counter ... | 06/19/2007 |
| 7112294 | Method of producing ceramic body This invention provides a production method of a ceramic body that can use waste and defectives generated during a production process. The invention includes a dust removal step of removing dust below a predetermined particle size from granulated powder in a slurry,... | 09/26/2006 |
| 6840520 | Valve plug seal assembly A seal assembly is adapted for use in a valve having a trim cage with an inner surface extending along an axis and a plug sized to fit inside the trim cage inner surface, wherein the plug is adapted to move along the axis. The seal assembly includes a spring-loaded ... | 01/11/2005 |
| 6572117 | Gland packing The present invention provides a gland packing in which a phenomenon where reinforcing fibers protruding from ends of adjacent braiding yarns overlap with each other, and the over-lapping reinforcing fibers are interposed over the whole range between expa... | 06/03/2003 |
| 6568689 | Gland packing The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppres... | 05/27/2003 |
| 6547256 | Cloth ring seal A seal assembly including a low flow cloth ring seal having a cloth assemblage is provided for sealing a tubular cavity disposed between a tubular member and a mating body. The density of the cloth assemblage may be set according to a desired flow rate of... | 04/15/2003 |
| 6543785 | Packing structure A packing structure has a core element of a material having a high fluid impermeability, and a thin coated rubber layer formed thereon to cover at least its sealing surface and having a glass transition temperature which is lower than the lowest temperatu... | 04/08/2003 |
| 6484067 | Industrial robot An industrial robot comprises a column 1 fixed to an installation base BS, a first axis J1, which is a linear movement axis, a second axis J2 and a third axis J3, which are rotational axes, and a fourth axis J4 in the form of a driving axis (rotational ax... | 11/19/2002 |
| 6478303 | Sealing ring packing A sealing ring packing (1) includes a cooled packing casing (4) that can be placed inside a stuffing box borehole (3), and holds at least one essentially annular slide ring (5) pressed against the moved component (2) to be sealed, whose outside periphery ... | 11/12/2002 |
| 6390666 | Packing gland seal assembly as an upstream seal for mixer rotors In the field of helical bladed rotors, and their sealing assemblies an improved upstream seal for mixer rotors is provided. It includes a bushing-like visco sleeve subassembly, a sleeve shaped metallic liner positioned abutting the visco sleeve; a sleeve-... | 05/21/2002 |
| 6318729 | Seal assembly with thermal expansion restricter A seal assembly having a first seal with a first mating surface and a recess in the first mating surface, and a second seal having a second mating surface and a recess in the second mating surface. The first mating surface of the first seal is adjacent to... | 11/20/2001 |
| 5803464 | Gland packing The present invention relates to a gland packing which is made of a material configured by laminating an expanded graphite tape into a spiral shape by winding. The gland packing can prevent penetration leak-age through minute gaps existing in the laminate... | 09/08/1998 |
| 5678832 | Boron nitride seal and method of use Boron nitride formed to an optimum density and composition of soluble borates and oxygen forms a material which deforms under pressure and reforms to make a very low permeability seal. The boron nitride seal is formed by precompacting a boron nitride powd... | 10/21/1997 |
| 5570891 | Toric joints having an alternating diameter for use in a packing box Packing box whose seal lining is composed of joints having a circular or approximately circular section and provided with different diameters so that they alternately rest on the rod (9) of the packing box and the housing (2) in which they are pressed. Ex... | 11/05/1996 |
| 5518255 | Carbon-based composite ceramic sealing material A sealing member, comprising a discrete material including a plurality of individual pellets, each pellet comprising a core and a carbon based coating thereon, the plurality of individual pellets being aggregated and pressed together. Additionally, a meth... | 05/21/1996 |
| 5388805 | Dual seal for shut-off valve A two stage seal for a shut-off valve having a bonnet with a rotatable valve stem therethrough. The first seal is conventional packing material axially compressible to adjust its sealing force against the valve stem. The second is a cartridge seal gland w... | 02/14/1995 |
| 5160122 | Coil spring with an elastomer having a hollow coil cross section A spring assembly includes a plurality of coils interconnected with one another in a spaced-apart relationship for causing the spring assembly to exert a force in a loading direction approximately normal to a tangent to a centerline of the plurality of co... | 11/03/1992 |
| 4815747 | Face type seal assembly A seal cartridge for providing a fluid seal between a rotating shaft and a housing such as found in a centrifugal pump. The seal cartridge includes rotating and non-rotating seal portions which prior to installation are maintained in alignment and carried... | 03/28/1989 |
| 4500092 | Valve cover sealing arrangement A valve comprises a valve housing with a detachable cover, at least one sealing member between the housing and the cover and supporting means for compressing the sealing member and for keeping it in place. The sealing member is kept under a compression lo... | 02/19/1985 |
| 4436316 | Fluid seal A seal assembly which includes a first seal ring having a geometric axis. The first seal ring has a unitary support member having a cross section which is generally T-shaped. The T-shaped cross section is defined by a hoop shaped section, having inner and... | 03/13/1984 |
| 4415171 | Control system and shaft seal for Stirling cycle machine A Stirling cycle engine has power pistons disposed in power cylinders. Each power piston is interconnected by levers fixed on an oscillating shaft to a unidirectionally rotating output crank shaft. Reciprocating displacers are disposed in displacer cylind... | 11/15/1983 |
| 4191386 | Self-cooled mechanical seal A conventional outside seal assembly is disposed outside the stuffing box which surrounds a rotatable shaft. A thermally conductive packing structure is disposed within the stuffing box in concentric and surrounding relationship to the shaft. The packing ... | 03/04/1980 |
| 4177998 | Packing gland assembly A packing assembly for a valve shaft or stem (8) consisting of inner and outer telescoping expander sleeves or rings (44, 46) slidably received intermediately in a stuffing box (32) between two groups of elastomeric sealing rings (F, G). Semi-fluid plasti... | 12/11/1979 |
| 4157833 | Sealing ring with diameter indicia An elastomeric sealing ring having a V-shaped configuration, the wall connecting the legs of the V lying in the plane of the ring, is provided with diameter indicia formed in the wall, the indicia equidistantly circumferentially spaced along an arc segmen... | 06/12/1979 |
| 3990679 | Stem sealing for high pressure valve or the like Apparatus and method for sealing a shaft extending between a high-pressure region and a low-pressure region so that the seal life is long, and so that stem torque as a result of the sealing is kept to a minimum. A plurality of sealing elements are provide... | 11/09/1976 |
| 3945649 | Completely fluidtight and frictionless shaft seal packing Shaft seal packing which has a large number of thin annular packing members uprightly set onto, and closely fitted to, a shaft in axial layers by compressing them only axially with respect to each other in a stuffing box, the inner diameter of the annular... | 03/23/1976 |
