| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 277510000 | Contained or compressed by gland member in packing box | 45 |
| 20080265519 | Device for a Rotating Gland Seal - The present invention relates to a machine arranged to operate in explosive environments, comprising a rotatable shaft ( | 10-30-2008 |
| 20090001670 | STUFFING-BOX PACKING - A stuffing-box assembly has a shaft element having an outer surface centered on an axis and a housing element surrounding the shaft element and having an inner surface also generally centered on the axis. One of the elements is shiftable axially and rotatable about the axis relative to the other of the elements. The packing itself is formed by a resilient inner sleeve between the surfaces and having an inner surface engageable with the outer surface of the shaft element and an outer surface formed with a pair of frustoconical surfaces and a resilient outer sleeve between the surfaces and having an outer surface engageable with the inner surface of the housing element and an inner surface formed with a pair of axially offset frustoconical surfaces complementary to and engaging the frustoconical surfaces of the inner sleeve. | 01-01-2009 |
| 20100194053 | GASKET AND PACKING PANEL ASSEMBLY FOR TRUNNION/SHAFT - A gasket and packing panel assembly comprises a packing panel that forms a stuffing box about a trunnion/shaft. A backing ring about the trunnion/shaft is connected to the packing panel and moves in an axial direction relative to the trunnion/shaft, reducing an axial dimension of the stuffing box. A gasket is located in the stuffing box. The gasket comprises a resilient body from which at least one lip seal projects towards the trunnion/shaft. The lip seal contacts the trunnion/shaft when the backing ring applies a pressure on the gasket. A gasket for use as a seal inside the stuffing box is also provided. | 08-05-2010 |
| 20110001293 | SLIDABLE GASKET AND A BEARING HAVING THE SAME - A bearing of the present invention includes a slidable gasket, in which a surface thereof is formed with a slippery portion to reduce its frictional index. As such, the bearing can be disposed between two objects to reduce the friction, in which the bearing has extended service life and produces diminished noise. | 01-06-2011 |
| 20110062672 | Tubular shaft seal - The invention describes a leak proof shaft seal for valves and other pressurized vessels, wherein the shaft seal can deform elastically by either stretching or twisting without loosing its ability to seal all, or a portion, of said shaft from harmful fluids. Furthermore, the elastic shaft seal is immune to static pressures, since it closely surrounds a shaft and thus is protected from collapse. | 03-17-2011 |
| 20120313327 | SEAL ASSEMBLY - A sealing assembly for a shaft includes: a first sealing component; a first spring energizer associated with said first sealing component; an annular support member configured for supporting said first sealing component; a second sealing component; a second spring energizer associated with said second sealing component, said first and second sealing components each having a pair of seal lips, said pairs of seal lips facing each other, said first and second spring energizers each configured for energizing respectively said first and second sealing components, each said spring energizer being respectively between one said pair of seal lips, said annular support member being disposed about the shaft and positioned between said first and second sealing components and said first and second spring energizers, said annular support member including two outwardly facing protuberances each of which interfits with a respective said pair of seal lips. | 12-13-2012 |
| 20130069319 | REMOTELY ADJUSTABLE SHAFT SEAL - A shaft seal arrangement includes a stuffing box defining a stuffing box central shaft opening extending around a shaft axis, packing arranged in the stuffing box around the central shaft opening, a packing gland defining a packing gland central shaft opening, and at least one adjuster assembly remotely operable to vary an engagement force between the packing gland and the packing. The adjuster assembly can be arranged around a packing gland stud and include an adjuster piston that is hydraulically operable to advance against the packing gland to vary the engagement force. | 03-21-2013 |
| 20140049009 | INTERSHAFT SEAL - An intershaft seal is provided for inner and outer coaxial shafts which rotate relative to each other. The seal is located in an annular space between the shafts and maintains an axial pressure differential between a fluid pressure on the first side of the seal and a different fluid pressure on the other, second side of the seal. The seal includes a first runner which extends circumferentially around a first one of the shafts and projects therefrom into the annular space. The seal further includes a sealing ring which is coaxial with the shafts. | 02-20-2014 |
| 20140167364 | Relating To Pump Seal Assemblies - A housing for a seal assembly of a pump, the housing comprising a main body having a wall section with inner and outer sides, and a bore extending through the main body between the inner and outer sides, a holder protruding from the inner side of the main body, the holder having an outer edge and a bearing face which is inclined inwardly towards the inner side, and extending from the outer edge towards the bore. There is also disclosed a lifting device for use with the housing. | 06-19-2014 |
| 20140183826 | ROTATING SEALING DEVICE AND SEALING RING FOR SUCH DEVICE - The invention relates to rotating sealing device for the passage of a fluid, including at least one seal positioned between a fixed support and a crown mounted able to rotate with respect to the support. This device is characterized in that the seal is constituted by a ring mounted able to slide in a groove in the fixed support and which incorporates a front face intended to come into contact with a bearing surface of the rotating crown, the incorporating on each of its internal and external cylindrical surfaces at least one ring-shaped groove intended to accommodate an O-ring seal. The ring can, additionally, by pressed against the bearing surface by positioning means exerting a thrust force on the rear face of the ring. The invention applies in particular for a system to inflate the tires of vehicles. | 07-03-2014 |
| 277511000 | Having installation, removal, assembly, disassembly, or repair feature | 5 |
| 20090289422 | Packing ring combination - Conventional combinations of radially and tangentially cut packing rings require, in particular as wear progresses, a degree of resilient deformation of the resilient packing ring, in order to be able to achieve a satisfactory sealing effect. However, the level of wear achievable is limited thereby. On the other hand, sealing rings which offer a high level of wear and a long service life due to the cut arrangement wear in an uncontrolled manner, which is associated with a risk of damage to or destruction of the sealing rings, resulting in the need for regular maintenance and replacement of the sealing rings. These problems are avoided by a packing ring combination according to the invention consisting of multi-part sealing ring | 11-26-2009 |
| 20090289423 | SHAFT SEAL PACKING AND SHAFT SEAL STRUCTURE FOR VALVE - A shaft seal packing exhibits high sealability at the time of initial assembly and also exhibits, even after the packing is retightened, excellent sealability by an increased seal surface pressure obtained through an effect of pressing and by self-sealability obtained through an effect of fluid pressure. A shaft seal structure for a valve includes a body for a valve, a valve shaft, a valve disc disposed within the body so as to be rotatable or capable of ascending and descending, a valve shaft seal chamber having the valve shaft axially attached thereto, a shaft seal packing that is attached to the shaft seal chamber and comprises annular packing bodies stacked and substantially V-shaped in cross section, with stacked layer faces on the inner-diameter side of the packing bodies brought into tight contact with one another and stacked layer faces on the outer-diameter side of the packing bodies formed with prescribed gaps between the adjacent stacked layer faces. In the shaft seal structure for a valve, a tightening load on the packing bodies and fluid pressure are converted to a force in the diametrical direction owing to inclined angles of stacked layer faces on the inner-diameter side to attain a seal by a surface contact between the inner peripheral surface on the inner-diameter side and the outer peripheral surface of the valve shaft on a sliding side, and a lip part on the outer-diameter side is pushed and spread owing to the gaps to attain a seal by a line contact with the shaft seal chamber on a fixed side. | 11-26-2009 |
| 20100072712 | Pressure packing comprised of packing rings secured against rotation with injection-molded segments - Conventional anti-rotation devices comprised of packing rings in a packing container of a pressure packing consist of an anti-rotation pin inserted in a packing ring and engaging in a recess at an adjacent packing ring. Due to the different wear rates of the packing rings such anti-rotation pins are subject to shear stress that increases with wear and that can cause the anti-rotation pin to break. Injection-molded packing ring segments with molded anti-rotation nibs in turn require great material thickness for the anti-rotation nibs to be able to withstand the occurring stresses. To solve this problem, the invention suggests to mold a radial anti-rotation groove | 03-25-2010 |
| 20100264602 | SEAL DEVICE AND METHOD FOR ASSEMBLING A GUIDE BLOCK IN A GLAND OF THE SEAL DEVICE - A seal device for a rotary shaft includes a sleeve, a gland, a ring, a guide block, and a fixing member. The guide block has an outer block surface extending circumferentially and abutting against a portion of an inner gland surface of the gland, and an inner block surface extending circumferentially and opposite to the outer block surface. The outer block surface has two circumferentially opposite outer ends. The inner block surface has two circumferentially opposite inner ends. The guide block further has two opposite end faces each of which connects one of the outer ends to one of the inner ends. The inner ends subtend an angle of not larger than 90° at a center line of the gland. At least one of the end faces lies in a plane line that is substantially tangent to an outer peripheral face of the ring. | 10-21-2010 |
| 20100308543 | SEAL DEVICE - A seal device includes a gland, a sleeve, a first sealing unit, a second sealing unit, a compression ring, a plurality of spring members, and at least one positioning member. The second sealing unit has an outer rotary ring surrounding and rotatable with the sleeve, an outer stationary ring contacting sealingly and slidingly the outer rotary ring around the sleeve, and a retainer abutting sealingly against the outer stationary ring oppositely of the outer rotary ring. The positioning member is disposed on the gland and extends into the outer stationary ring so as to prevent the outer stationary ring from rotation. | 12-09-2010 |
| 277512000 | Fluid introducer or director | 10 |
| 20090200749 | MECHANICAL SEAL DEVICE - A mechanical seal device having a stationary sealing ring attached in close contact to a seal cover, a rotating sealing ring having a counter seal face in close contact with the seal face, and a fixing part having a first fixed ring holding the rotating sealing ring and a second fixed ring fitting in close contact with the rotary shaft and having a bellows surrounding the rotary shaft, having one end connected with the first fixed ring, and having another end connected with the second fixed ring, one seal face of the seal face and the counter seal face having fluid introduction ports for introducing the sealed fluid to the seal face at the circumferential surface at the sealed fluid side and the other seal face having dimples, or one seal face having the fluid introduction ports and the dimples, the dimples being arranged in lines radiating from a center of the seal face. | 08-13-2009 |
| 20130234401 | FLOWLINE DIVERTOR SEAL WITH SPRING-ENERGIZED SEALING LIPS - A seal for installation within a flowline diverter assembly including a housing having a bore, and a spool received within the bore. The seal includes an annular body configured to be received between the spool and the bore. The body also has an inner diameter face disposable opposite the spool, and an outer a fluid face disposable opposite the bore. The inner diameter face has a first and a second lip portion which are energizable responsive to fluid pressure. A generally annular first spring member is molded into the outer diameter face adjacent a first end face of the body, and a generally annular second spring member is molded into the body outer diameter face adjacent a second end face. Generally annular third and fourth spring members each also may be molded into a corresponding one of the body lip portions. | 09-12-2013 |
| 20150362074 | SEALING DEVICE - Provided is a sealing device that is capable of exhibiting a sealing function even in a condition in which a fluid pressure is low while suppressing its sliding torque. A sealing device | 12-17-2015 |
| 277513000 | External device or system | 4 |
| 20090194951 | Cooling system for injection sealant stuffing box - A conduit for a cooling liquid, said conduit for substantially contacting a viscous fluid type sealant within a stuffing box, thereby conducting heat away from said sealant within said stuffing box by flowing said cooling liquid though said conduit. | 08-06-2009 |
| 20090212503 | Mechanical Seal - A rotating assembly of a mechanical seal includes a retainer, a pair of compression rings, a shaft sleeve, a first rotating seal ring and a second rotating seal ring. The retainer includes a plurality of spring members and a plurality of slide legs longitudinally extended in opposite directions to define limiting spaces where the compression rings are correspondingly restricted. The compression rings are located at opposite sides of the retainer between which the spring members are arranged. In assembling, the retainer, the compression rings, the first rotating seal ring and the second rotating seal ring are assembled on the shaft sleeve. Spring forces of the spring members can actuate the compression rings to push the first rotating seal ring and the second rotating seal ring in the opposite directions. | 08-27-2009 |
| 20100253007 | Zero Emissions Reciprocating Pump - A sealing system for a pump includes a housing having an internal chamber adapted to receive a portion of a plunger. A primary seal is translatable within the chamber in sealing relation with the housing. The primary seal includes first and second elastomeric members adapted to sealingly engage the plunger. The first and second elastomeric members are spaced apart from one another a distance greater than or equal to a maximum stroke of the plunger. A secondary seal is spaced apart from the primary seal and adapted to sealingly engage the plunger. A chamber contains a barrier fluid in contact with the primary seal and the secondary seal. A pressurizing device maintains a pressure of barrier fluid at a magnitude greater than a peak pressure of a fluid pumped by the plunger such that the pumped fluid is restricted from entering the barrier fluid chamber. | 10-07-2010 |
| 20110074115 | Injection of sealant for pressure sealant type rotary seal - An insert for a pressure sealant type sealing system, an improved sealing system for sealing between an aperture of a machine housing and a rotating shaft of the machine protruding through the aperture, comprising the insert to provide a pair of outlets into the driveshaft arranged collinearly around the driveshaft, a method of injecting the sealant into the stuffing box in two positions on opposite sides of the drive shaft thereby balancing the pressure, and a method of retrofitting existing pressure sealant systems by retrofitting with the insert. | 03-31-2011 |
| 277514000 | Drain, pressure relief, or vent | 2 |
| 20100102516 | Mechanical packing system - A mechanical packing system for use for a device allows one or more packing rings to be installed one at a time and die formed in place. A reversible, detachable flange having a key offset from the center is inserted into a key slot of the hub of the mechanical packing system which is also offset during this installation process. When the device is operated, the flange is detached from the hub rotated 180° and the key of the flange is then inserted into the key slot of the hub. A spacer with integral lantern ring and internal bore surface which reduces or prevents marring or galling. A stuffing box of sufficient length to eliminate the need for a spacer or unneeded packing rings. | 04-29-2010 |
| 20150108720 | SEALING DEVICE AND SEALING STRUCTURE - The sealing device includes: an outer peripheral ring | 04-23-2015 |
| 277516000 | Spacer between seals (e.g., lantern ring, etc.) | 1 |
| 20090045589 | Bushing and Lantern Ring for Rotary Fluid Pumping Equipment - A throat bushing ( | 02-19-2009 |
| 277518000 | Plural distinct packing boxes | 1 |
| 20090066034 | Sealing System With Pressure Relief Elements and Use of a Sealing System for Producing a Pressure Cascade in an Intermediate Space - In a sealing system ( | 03-12-2009 |
| 277520000 | Particular gland feature | 10 |
| 20090302547 | SEALING GLAND FOR RIBBON-SHAPED PROBE - A sealing gland for accommodating a ribbon-shaped element is provided to include a fitting, a bore, an alignment assembly and a cap portion. The bore extends along an axis through the fitting. The alignment assembly is configured to be mounted within the bore and includes an element slot such that the ribbon-shaped element can extend through the alignment assembly. The element slot is cuboidal in shape and is defined by a length, a height and a width. The alignment assembly is arranged so that the length is parallel with the axis. The cap portion is configured to be mounted on the fitting to retain the alignment assembly. | 12-10-2009 |
| 20100314838 | SEAL ASSEMBLY - A fluid seal assembly consists of a seal of compliant material that interacts with a seal carrier. The seal carrier includes one or more elements of relatively rigid material defining a sealing face with a seal-receiving groove interrupting the sealing face. The seal-receiving groove has defining walls each of which has a proximal end at the sealing face and a distal end. The defining walls serve as seal contact surfaces. At least one of the seal contact surfaces converges inwardly to narrow the seal-receiving groove toward the distal end. The seal-receiving groove has a depth and a breadth suitable for accepting the seal, with the seal projecting past the sealing face when compressed to be in contact with the seal contact surfaces. | 12-16-2010 |
| 20120274030 | Remotely Actuated Packing Follower - A remotely actuated packing follower for compacting the packing in a base and base extension situated around a rotatable or longitudinally pulsatable shaft exiting a structure. The remotely actuated packing follower comprises a piston slidably and sealingly mounted within a housing and a packing follower cap sealingly attached to the top of the housing. The packing follower cap has a channel for fluid from a remote source to flow from a hose attached to the channel. The piston, housing, and packing follower cap create a chamber. When sufficient fluid flows into the chamber, it pushes the piston away from the packing follower cap so that the bottom of the piston can push against the packing. An inner channel in the piston accommodates the shaft. Either the remotely actuated packing follower or a traditional anti-leak fitting is optional constructed of releasably connectable sections. | 11-01-2012 |
| 20130154198 | GLAND PACKING AND PACKING SET - A gland packing provided in a fluid apparatus such as a pump and compressed in an axial direction so as to prevent penetration leakage of a fluid is provided. | 06-20-2013 |
| 277521000 | Segmented | 3 |
| 20080272555 | Dynamic seal assembly - A dynamic seal assembly for a rotating member comprising a first split housing carrying a first split seal, a second split housing carrying at least one second split seal, each split seal being resiliently closed so that sealing contact is maintained when the rotating member wobbles. The free ends of the second split seal overlap with one another in either a side-by-side relationship or an over-under relationship, or both. | 11-06-2008 |
| 20130127121 | LOCKING COLLAR FOR CYLINDRICAL CAVITY - A locking collar to be inserted into a cylindrical cavity or lumen of a device for securing mechanical elements from moving axially within the cavity. The collar includes two semi-circular cylindrical segments hinged together with an opposed single slit to allow easy installation within the cavity and pushed into position against the installed elements without the need to disassemble a device. The collar is a substantially cylindrical rigid member with an outer diameter closely matching the inner bore diameter of the cavity and includes an opening at the slit to receive a securing screw member to urge the two segments apart to engage the inner bore surface of the cavity and fix the collar in place thereby locking the elements in place. | 05-23-2013 |
| 20130292910 | Gland Packing Placed Between Two Opposite Elements Around a Shaft - Compression between two blocks ( | 11-07-2013 |
| 277522000 | Spring bias | 3 |
| 20100066032 | SEAL FOR FLEXIBLE AIR DUCT - A seal includes a main body portion having fingers that extend outward to seal against the sides of one or more flexible conduit sections. The seal embodies several features that minimize the effect of compressing the seal over extended use. In one embodiment, the seal include a tab that isolates compression forces from the fingers. Other embodiments, include a recessed hinge point between the fingers and the main body. Still other embodiments, incorporate a material that fills the region between the fingers. | 03-18-2010 |
| 20140049010 | INTERSHAFT SEAL - An intershaft seal is provided for inner and outer coaxial shafts which rotate relative to each other. The seal is located in an annular space between the shafts and maintains an axial pressure differential between a fluid pressure on a first side of the seal and a different fluid pressure on a second side of the seal. The seal includes first and second runners which project into the annular space from a first one of the shafts and extend circumferentially around the first shaft such that a cavity is formed between the runners. The seal further includes a sealing ring which is coaxial with the shafts and is located in the cavity. | 02-20-2014 |
| 20150108721 | PASSIVE SHUTDOWN SEALING DEVICE FOR A SYSTEM OF SHAFT SEALS OF A REACTOR COOLANT PUMP SET - The present invention relates to a passive shutdown sealing device ( | 04-23-2015 |
| 277529000 | Having particular cross-sectional seal profile | 4 |
| 20090166979 | Sealing Ring for Reciprocating Motion - A sealing ring ( | 07-02-2009 |
| 20090166980 | PACKING ASSEMBLY FOR A PUMP - A header ring for use in a stuffing box comprising an annular body portion of an elastomeric material, an annular radially inward projecting sealing lip portion formed on said body portion and an annular, axially facing pedestal portion formed on said body portion, said pedestal portion defining an annularly extending radially inwardly facing pedestal surface, the sealing lip portion defining an annularly extending, radially inward facing sealing surface, the sealing surface and the pedestal surface forming a juncture, at least a portion of the pedestal portion adjacent the juncture and forming the pedestal surface and at least a portion of the sealing lip portion adjacent the juncture and forming a portion of the sealing surface being comprised of a layer of reinforced elastomeric material bonded to the body portion. | 07-02-2009 |
| 20130075978 | METHODS AND APPARATUSES FOR PRODUCING A BRAIDED DUAL-SIDED COMPRESSION PACKING SEAL AND METHODS OF USING THE SAME - The present application pertains to a braided dual-sided compression packing seal, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The braided dual-sided compression packing seal is made up of two or more different materials that are braided together in such a way that, in cross-section, the compression packing seal has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the compression packing seal. Accordingly, when viewed in a cross-sectional plane, the compression packing seal may expose substantially only a first material along a first side of the seal, and substantially only a second material along a second side of the seal. | 03-28-2013 |
| 20140346739 | Bullet Seal - A bullet seal tail section is reconfigured from a groove flanked by tapered surfaces that engage an o-ring seal to an end design on the bullet seal that has tapered surfaces that meet at a first angle and a pin with an end taper that has counterpart surfaces that slope more with respect to an axis of the seal. The o-ring is on an opposite side of the pin from the tail of the bullet seal. Large differentials evenly push out the bullet seal tail and uniformly compress the o-ring for a larger contact area at greater contact force than previously known. The o-ring is reformed into a generally quadrilateral shape from round due to the applied loading. | 11-27-2014 |
| 277534000 | Particular seal material or construction | 5 |
| 277535000 | Composite | 2 |
| 277536000 | Fibrous component | 2 |
| 277537000 | Braided, woven, or twisted | 2 |
| 20080309023 | THERMAL PROTECTION SYSTEM AND RELATED METHODS - A thermal protection system and a method of manufacturing are disclosed. The thermal protection system may be configured to protect a moveable joint, for example, a flexible bearing of a rocket motor nozzle. The thermal protection system includes a series of annular shims separated by a plurality of discrete spacers. Each shim of the series of annular shims may have a larger diameter than the previous shim, and the shims may nest. The shims may comprise a thermally stable material, and the discrete spacers may comprise an elastomer. Optionally. an annular bearing protector may separate the annular shims from the flexible bearing. | 12-18-2008 |
| 20090108534 | Yarn and Gland Packing - A yarn mainly configured by expanded graphite is improved to be so highly flexible that the expanded graphite does not protrude in a usual bending process, in order to prevent partial missing of the expanded graphite from occurring when the yarn is twisted or braided to produce a gland packing. A yarn | 04-30-2009 |
| 277540000 | Elastomer or plastic | 3 |
| 20150054224 | GLAND PACKING - A gland packing having required characteristics is obtained by finding relationships between required characteristics and the value of the limiting oxygen index, and adequately defining the level of the required characteristics. The gland packing is configured by twisting or braiding a single or plurality of yarns that are formed by twisting fibers having a limiting oxygen index (LOI) of 21 to 30, preferably 22 to 26. The fibers contain fibers in which a flat ratio is defined as 1.1 to 2, the flat ratio being a value obtained by dividing the maximum value of an interval between two parallel straight line in a state where a section of each of the fibers is interposed between the straight lines, by the minimum value. The fibers contain fibers in each of which a sectional shape has one or more recesses | 02-26-2015 |
| 20150054225 | GLAND PACKING - A gland packing having required characteristics is obtained by finding relationships between required characteristics and the value of the limiting oxygen index, and adequately defining the level of the required characteristics. The gland packing is configured by twisting or braiding a single or plurality of yarns that are formed by twisting fibers having a limiting oxygen index (LOI) of 21 to 30, preferably 22 to 26. The fibers contain fibers in which a flat ratio is defined as 1.1 to 4, the flat ratio being a value which is obtained by dividing the maximum value of an interval between two parallel straight lines in a state where a section of each of the fibers is interposed between the straight lines, by the minimum value. The fibers contain fibers in each of which a sectional shape has one or more recesses having a depth of 0.4 μm or more. | 02-26-2015 |
| 20160018002 | POLYMER SEAL ASSEMBLY - A seal assembly includes a seal body, a spring disposed adjacent to the seal body, and a seal ring disposed adjacent to the seal body. The seal body and the seal ring can include a plastic polymer material. The seal assembly can be a subcomponent of hydraulic strut in the landing gear of an aircraft. | 01-21-2016 |
