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| Number | Title | Issue Date |
| 8091898 | Hydrodynamic circumferential seal system for large translations A circumferential seal system for sealing a high pressure region from a low pressure region separated by a runner with an outer circumferential surface and a seal ring disposed about the outer circumferential surface is described. The seal system includes a pluralit... | 01/10/2012 |
| 7984911 | Face seal for gas turbine engine A face seal for a gas turbine engine comprises a seal body that has a contact face to engage a rotating surface. The contact face is defined as an area extending radially between an inner diameter of the seal body and an outer diameter of the seal body at one seal e... | 07/26/2011 |
| 7946590 | Face seal for gas turbine engine A face seal for a gas turbine engine comprises a seal body that has a contact face to engage a rotating surface. The contact face is defined as an area extending radially between an inner diameter of the seal body and an outer diameter of the seal body at one seal e... | 05/24/2011 |
| 7931277 | Hydrodynamic circumferential seal system for large translations A circumferential seal system for sealing a high pressure region from a low pressure region separated by a runner with an outer circumferential surface and a seal ring disposed about the outer circumferential surface is described. The seal system includes a pluralit... | 04/26/2011 |
| 7744094 | Mechanical seal device A mechanical seal device includes a rotational seal ring connected to a rotational shaft, having a rotational seal surface and arc-shaped grooves arranged on the rotational seal surface. The grooves are sectionalized by partition walls. A stationary seal ring has a ... | 06/29/2010 |
| 7540501 | Segmented shaft seal A segmented shaft seal is provided for circumferentially sealing an outer surface of a rotating shaft unit. The shaft seal includes a plurality of seal ring segments disposed within a housing having a circumferential spring holding the ring segments together. The ri... | 06/02/2009 |
| 7500676 | Sliding element A primary objective of the present invention is to decrease the friction coefficient of the sliding face of a sliding element and to improve its seal performance. The sliding element disposes a plurality of elongate dimples in its first sliding face in which forward... | 03/10/2009 |
| 7374339 | Seal device for a guide device and guide device A seal device fixed to an end portion of a slider of a guide device includes: a casing; a plurality of seal members; and elastic members, wherein each seal member has a recess portion in which a rail penetrates. An inner circumferential face of the recess portion co... | 05/20/2008 |
| 7364418 | Scroll fluid machine having an adjustment member with a deformable element A scroll fluid machine includes a stationary scroll having a spiral wrap formed on an end plate and a moving scroll having a spiral wrap formed on an end plate. A polymer actuator for adjusting the amount of space between the wrap and the end plate is disposed in a ... | 04/29/2008 |
| 7331919 | Centrifugal drum for a separator A centrifugal drum for a separator having a vertical axis of rotation, including a drum bottom part and a drum cover fastened to the drum bottom part by a locking ring. Also included is a centering ring arranged between the drum bottom part and the drum cover such t... | 02/19/2008 |
| 7314238 | Fluid connection A fluid connection comprised of a first fitting having a body with a first end and a second end. A passage extends through the body from the first end to the second end. A bracket is mounted to the second end of the body. The bracket defines a space adjacent the sec... | 01/01/2008 |
| 7293778 | Systems and methods for sealing between stators and rotors A seal is used between a housing and a shaft having an axis. The seal includes a first portion and a second portion engageable with each other and movable relative to each other. The first portion and the second portion are configured to be received in a cavity betw... | 11/13/2007 |
| 7290560 | Valve cover locking system An apparatus and method to assemble and disassemble a valve cover locking screw assembly for a reciprocating pump module block. The module block has a bore, a removable valve cover closing the bore, and a valve cover locking ring securable to the block and surroundi... | 11/06/2007 |
| 7284758 | Textured seal for reduced wear The present invention relates to seals having textured features. The present invention particularly relates to seals having contact surfaces with said features wherein the contact surface seals properly and is resistant to wear. The contact surface is able to perfor... | 10/23/2007 |
| 7286972 | Implicit-explicit switching for finite element analysis A method for performing a finite element simulation. The method includes switching between an implicit method and an explicit method during the finite element simulation. By switching between the implicit and explicit methods during a simulation, an accurate solutio... | 10/23/2007 |
| 7269982 | Steam seal for textile production The invention is a sealing mechanism for a steam chest (14) used in the manufacture of textile materials. This invention is a device for heating continuous textile material comprising: a steam chest (14) having a steam inlet, a material inlet (18 | 09/18/2007 |
| 7261300 | Hydrodynamic foil face seal A foil thrust bearing forms the primary rotating interface for a film riding face seal. This face seal includes a spring system that will allow the entire assembly to translate axially relative to a static attachment. The complete assembly will form a hybrid foil/fi... | 08/28/2007 |
| 7258346 | Sliding element A primary objective of a sliding element of the present invention is to decrease a friction coefficient of the sliding face and to improve seal performance thereof. The sliding element comprises a first dam section (6) which is configured in an annular form o... | 08/21/2007 |
| 7255084 | Piston with a skirt having a low coefficient of friction A piston for an internal combustion motor has a skirt with a surface, which is at least partially polished and thereafter coated with a coating having a hardness of greater than 8 GPa and having a coefficient of friction of less than 0.20. The piston has an increase... | 08/14/2007 |
| 7252291 | Mechanical seal having a single-piece, perforated mating ring A mechanical seal (e.g., single mechanical seals, double mechanical seals, tandem mechanical seals, bellows, pusher mechanical seals, and all types of rotating and reciprocating machines) with reduced contact surface temperature, reduced contact surface wear, or inc... | 08/07/2007 |
| 7249768 | Shaft seal assembly and method A pressure-actuated shaft seal assembly and associated method for controlling the flow of fluid adjacent a rotatable shaft are provided. The seal assembly includes one or more seal members that can be adjusted between open and closed positions, for example, accordin... | 07/31/2007 |
| 7234868 | Radial pumping oil seal for fluid dynamic bearing motor An improved rotational motor, such as a spindle motor for a disc drive, is provided. The motor first comprises a hub having a shaft portion and a horizontal body portion. The motor also comprises a sleeve surrounding the shaft portion of the hub. A fine first vertic... | 06/26/2007 |
| 7229076 | Mechanical seal A balance ratio for a stationary seal ring is designed to allow a seal face to be opened when, with a rotary seal ring at standstill, steam of a predetermined pressure is supplied to an endo-fluid region while a sealing-fluid region is brought into an exhausting sta... | 06/12/2007 |
| 7226671 | Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors A method for making aerospace face seal rotors reinforced by rhenium metal, alloy, or composite in combination with silicon carbide or other ceramic. The resulting rotor also is disclosed. Ceramic grains, preferably silicon carbide (SiC), are mixed with powdered met... | 06/05/2007 |
| 7201238 | Low friction face sealed reaction turbine rotors Rotary jetting tool including a rotor with axially-opposed pressure-balanced mechanical face seals. Vented upper mechanical face seal enables the rotor to be operated with the relativity low starting torque achievable using reaction forces from offset jets energized... | 04/10/2007 |
| 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 |
| 7178806 | Cinchpac self-loading rotary shaft seal A seal for a conveyor drive which has an elastomer which is compressed between a cap ring and a housing. ... | 02/20/2007 |
| 7178807 | Shaft mounted seal device and method for a scraped surface heat exchanger A scraped surface heat exchanger includes a seal assembly between a rotating tube and the end housing. The seal assembly is removable by removing the tube. ... | 02/20/2007 |
| 7175051 | Container for liquids, including sealing mechanisms A container for storage and dispensing of paint includes a unitary, molded plastic container body defining an interior volume and including an annular container opening through which the contents are dispensed. Included as part of the paint container is a dispensing... | 02/13/2007 |
| 7163206 | Fluid seal A jet pipe assembly containing at least one joint provided with a seal assembly to isolate, substantially, the fluid flowing in the pipe from the fluid external to the pipe. The dynamic member of the seal assembly is provided with both radial and cylindrical sealing... | 01/16/2007 |
| 7159857 | Multi spring ring A mechanical spring energized sealing device comprising in combination an elastomeric jacket and variety of resilient metallic springs inserted inside one uniform jacket casing, there are variety of energizer springs which are used for different needs in marketplace... | 01/09/2007 |
| 7156399 | Sealing device and sliding member A sealing device comprises a sealing member brought into contact with a contact surface so as to be slidable in a predetermined sliding direction. The sealing member comprises a sliding contact portion containing a high polymer material to be brought into sliding co... | 01/02/2007 |
| 7144016 | Dry gas seal A gas seal assembly comprises a pair of mutually rotatable sealing members A, B, each of which has a face adjacent a gap between the two members. One of the members B is urged in a direction attempting to close the gap h which constitutes a leakage path through the ... | 12/05/2006 |
| 7144015 | Modular gas seals cartridge A tandem gas seal assembly is described for sealing between the rotor and the casing of a rotary machine. The assembly comprises two sealing stages 10, 12 mounted axially adjacent to one another on the machine rotor. In the invention, wherein the two stages | 12/05/2006 |
| 7108418 | Bearing seal assembly for concrete auger mixer and method for using same An auger mixer for mixing a concrete mix includes an elongated mixer housing having a mixing chamber for mixing the concrete mix therein. A mixing auger is rotatably mounted within the mixing chamber. A bearing assembly mounts one end of the auger shaft to the mixer... | 09/19/2006 |
| 7097176 | Balanced mechanical seal assembly A mechanical seal having a single rotatable seal ring having a pair of concentric seal faces to form a radially inner seal face and a radially outer seal face. The mechanical seal also includes first and second stationary seal rings, each having a seal face, where t... | 08/29/2006 |
| 7093836 | Seal device A seal device includes a first resilient seal ring having a first resilient seal portion and first and second seal portions; and a second resilient seal ring. The first resilient seal portion urges a first seal surface of the first seal ring against the second seal ... | 08/22/2006 |
| 7086649 | Gasket with two concentric lips A gasket, sliding about the axis of rotation of a part to be brought closer to or to be spaced apart from another part with which it provides tightness through a pair of lips provided on a ring. The gasket includes a portion of the ring capable of bending to modify ... | 08/08/2006 |
| 7052016 | Sliding element The present invention relates generally to a technical domain of a sliding element engaging a relative rotational motion. A primary objective of a sliding element of the present invention is to decrease a friction coefficient of the sliding face and to improve the s... | 05/30/2006 |
| 7044470 | Rotary face seal assembly A rotary seal assembly including a first member having a sealing face and a second member having a sealing face with a number of pumping grooves therein. At least a first set of pumping grooves stating proximate a center portion of the sealing face and extending out... | 05/16/2006 |
