| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 277370000 | Installation, removal, assembly, disassembly, or repair feature | 19 |
| 20090152818 | Apparatus for rotationally fixing a seal ring of a mechanical seal assembly axially movably retained at a mounting component - The present invention refers to an apparatus for rotationally fixing a seal ring ( | 06-18-2009 |
| 20090174149 | MECHANICAL SEAL DEVICE - A mechanical seal device which is reduced in friction when seal surfaces slide on each other, prevented from abrasion on seal surfaces, is prevented from abnormal abrasion on the seal surface of a sealing ring and joining split surfaces, is prevented from seizure or squeal phenomena on seal surfaces when seal surfaces are abrasion-rotated and kept in a dry-friction state, is simplified in structure thereof, and is easier to assemble and disassemble. The mechanical seal device is a split type mechanical seal device that seals fluid to be sealed by being mounted to a surface outside a machine between a hole in a housing and a rotary shaft inserted into the hole, and comprises a split stationary sealing rig mounted and fixed to the rotary shaft by embracing it from the opposite sides, and a split rotating sealing ring fixed to the rotary shaft by embracing it from the opposite sides, wherein a clearance through which to permit fluid to be sealed to flow is provided between the inner peripheral surface of the split stationary sealing ring and the rotary shaft, and a rubber or resin sealing layer is provided on at least one of the seal surface of the split stationary sealing ring and the opposing seal surface of the split rotating sealing ring. | 07-09-2009 |
| 20100109250 | Dynamic sealing element - The invention relates to a sliding seal ( | 05-06-2010 |
| 20100164180 | HYDRODYNAMIC INTERSHAFT SEAL AND ASSEMBLY - A seal and seal assembly for providing a seal between an outer shaft and an inner shaft. The assembly includes a seal subassembly disposed between the shafts. The subassembly includes a split carbon ring, a solid outer ring, and a spring mechanism provided between the split carbon ring and the solid outer ring. The carbon ring is radially split into a plurality of segments having splits between ends of adjacent segments. The segments include a circumferential inner radius and a sealing dam on the circumferential inner radius. The solid outer ring includes a sealing face and a plurality of hydrodynamic grooves provided on a radial face. The spring mechanism may be configured to engage a portion of an outer diameter of the split carbon ring and a portion of an inner diameter of the solid outer ring and to urge the split carbon ring radially towards the inner shaft. | 07-01-2010 |
| 20100244385 | DISTORTION RESISTANT FACE SEAL COUNTERFACE SYSTEM - According to the present invention, an annular face seal arrangement for a gas turbine engine is provided that includes a mounting ring, a mounting member, a rotor, and a stator. The mounting ring has a width extending between a first axial end and a second axial end. The mounting member has a clamp portion and a biasing portion. The clamp portion extends axially between a first clamping surface and a second clamping surface. The biasing portion includes a first segment and a second segment. The second segment has a width and a rotor contact surface. The rotor has a rotor seal surface and a clamp portion having a width. The stator has a stator seal surface that is aligned with the rotor seal surface. The mounting ring is disposed radially inside of the rotor and radially inside of at least part of the biasing portion, and is disposed in contact with the second clamping surface of the clamp portion. The rotor contact surface of the biasing portion is disposed in contact with the rotor. | 09-30-2010 |
| 20120080852 | Seal Cartridge For A Centrifugal Pump - A seal cartridge assembly for installing the elements of a mechanical sealing arrangement in a rotodynamic pump provides, as part of the seal cartridge, a shaft sleeve that supports certain of the non-rotating elements of the sealing arrangement, and facilitates placement of the sealing elements by providing shearable pin elements. | 04-05-2012 |
| 20140054862 | SPRING CARRIER AND REMOVABLE SEAL CARRIER - A seal assembly includes a seal support, a spring carrier, a plurality of springs, and a seal carrier. The spring carrier is connected to the seal support by a guide assembly. The plurality of springs are disposed between the seal support and the spring carrier. The seal carrier is connected to the spring carrier and is removable therefrom. | 02-27-2014 |
| 20140159315 | SELF ALIGNING SPLIT MECHANICAL SEAL EMPLOYING A ROTARY SEAL RING HAVING NON-FLAT END FACES - A split mechanical seal for mounting to a housing containing a rotating shaft, including a gland assembly, a holder assembly having an inner surface and an opposed outer surface, and a rotary seal ring that is sized and configured for seating within the space defined by the holder assembly. A detent groove is formed in the inner surface of the holder assembly for at least partially seating a portion of a sealing element, and another detent groove is formed in an outer surface of the rotary seal ring for at least partially seating another portion of the sealing element. The holder detent groove and the seal ring detent groove in combination are configured to seat and to retain the sealing element. | 06-12-2014 |
| 20150316153 | MECHANICAL SEAL - Provided is a mechanical seal that has an improved accuracy of positioning a plurality of divided bodies that compose a seal ring. A mechanical seal ( | 11-05-2015 |
| 20150377361 | SHROUDED FACE SEAL AND COMPONENTS THEREOF - One embodiment of the seal housing for a face seal described herein include a base with a seal element support and a shroud both extending from the base in a common direction. The seal element support and the base define a space for receiving a seal element. The shroud includes a tip having a head portion that tapers toward a neck portion that is reduced in size relative to the head portion. The tip is secured to a stem of the shroud through a set of circumferentially distributed countersunk holes. | 12-31-2015 |
| 20160018005 | REPLACEABLE GLAND INSERT FOR INCREASED LIFE - A mechanical seal component of a mechanical seal is substantially annular and includes a plurality of axially adjacent retaining recesses along its surface with each recess being adapted to accept a sealing member. | 01-21-2016 |
| 20160084384 | MECHANICAL SEAL HAVING A SIMPLIFIED CONSTRUCTION - The invention relates to a mechanical seal arrangement comprising a rotating slide ring ( | 03-24-2016 |
| 277371000 | Unitized seal assembly (e.g., cartridge, etc.) | 7 |
| 20100148448 | Pump seal - A pump seal for sealing a gap between a housing and a rotating shaft including a first shell configured to engage the pump housing and to be stationary therewith. The first shell is provided with a first wearable sealing element. The pump seal further includes a second shell configured to engage the shaft and to rotate therewith, the second shell being provided with a second wearable sealing element. The first and second wearable sealing elements are configured to be in substantially sealing contact with each other during operation. The pump seal further includes a sintered retainer ring arranged between a portion of the first shell and the first wearable sealing element for substantially preventing rotation of the first wearable sealing element relative to the first shell. | 06-17-2010 |
| 277372000 | Having rotation prevention (i.e., antirotation) feature for the sealing face member | 2 |
| 20100038861 | Shaft Sealing Device - A shaft sealing device includes a Gland having a flange with an axial hole, a coolant inlet, and a coolant outlet. A shaft sleeve is extended through the axial hole and mounted around a rotary shaft. A plurality of flexible elements extend through a plurality of through-holes in a retainer and each include two ends respectively presaging against two friction ring assemblies, allowing joint rotation of the shaft sleeve and the rotary shaft. The retainer further includes a first tangent groove having an inner end in communication with the axial hole and an outer end in communication with the coolant inlet. The retainer further includes a second tangent groove having an inner end in communication with the axial hole and an outer end in communication with the coolant outlet. Each of the first and second tangent grooves has a width decreasing from the inner end toward the outer end. | 02-18-2010 |
| 20120319355 | Integrated End Face Seal Removal Apparatus - A mechanical seal includes a seal cartridge and a removal formation. The seal cartridge includes an outer cylindrical surface, an inner cylindrical surface concentric to the outer cylindrical surface, and a ring surface connecting the outer cylindrical surface and the inner cylindrical surface to define an inner cavity interior to the seal cartridge. The removal formation is arranged on the ring surface, and includes a first surface proximate the ring surface, an indentation feature proximate the first surface, and a seal puller feature proximate the indentation feature defining a channel configured to allow application of removal forces to the seal cartridge. | 12-20-2012 |
| 277374000 | Retains opposed sealing face members | 1 |
| 20090295096 | CARTRIDGE AND RELATED METHODS - A cartridge for mounting around a movable shaft is provided. According to one exemplary embodiment, the cartridge features a cartridge housing, first and second rings having respective radial inner peripheries for establishing interfaces with a movable shaft, first and second pressure plates situated in the cartridge housing between the first and second rings, and a biasing member urging the first and second pressure plates towards the first and second rings, respectively. According to a second exemplary embodiment, the cartridge features a cartridge housing, a ring having a radial inner periphery for establishing an interface with a movable shaft, a pressure plate situated in the cartridge housing between the protruding portion and the ring, and a biasing member urging the pressure plate towards the ring. The cartridges of both embodiments may be designed to permit removal of the ring(s) from the cartridge housing without requiring removal of either the pressure plate (s) or the biasing member(s). | 12-03-2009 |
| 277375000 | Mounted in housing or casing | 3 |
| 20100090412 | CARTRIDGE SEAL - 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. The non-rotating seal portion includes a seal ring seat that is connected to the support sleeve by a frangible element. During installation, the frangible element is separated to release the non-rotating portion of the seal from the support member. The non-rotation seal portion includes an O-ring held by a stationary seal holder. An O-ring seal seals a circumferential periphery of the seal ring to inhibit fluid leakage between the holder and the seal ring. An inside radial end face of the seal ring abuttingly engages a radial end face defined by the holder which enhances heat transfer between the seal ring and the holder. A plurality of grooves or recesses are formed in either the inside end face of the seal ring or the radial end face of the holder and are arranged to receive cooling fluid from the pump housing to further promote cooling of the seal. | 04-15-2010 |
| 20140159316 | SELF ALIGNING SPLIT MECHANICAL SEAL EMPLOYING A SELECTIVELY ENGAGEABLE AXIAL BIASING ASSEMBLY - A split mechanical seal for mounting to a housing containing a rotating shaft comprising a gland assembly configured for mounting to the housing and forming a chamber, where the gland assembly includes a top surface having a gland groove formed thereon. The gland groove is formed at least in part by at least one raised wall portion that extends axially outwardly from the top surface. The seal also includes a stationary seal ring having a groove or recess formed in an inner surface. | 06-12-2014 |
| 20150061229 | ROTARY CARTRIDGE SEAL WITH INTERNAL FACE-SEALING SURFACES - A cartridge seal for sealing a space between a housing and a rotatable shaft includes a rotary sealing member having an inner surface defining a bore for receiving the shaft and a circular outer flange extending radially outwardly from and circumferentially about a central axis, the outer flange having a radial sealing surface. A static seal assembly is disposed about the rotary member and includes an annular casing coupleable the casing and having a radial sealing surface engageable with the rotary with the housing and an annular static sealing member disposed within member sealing surface to form a sealing interface. A biasing member axially biases at least a portion of the static sealing member toward the rotary member flange. An annular collar is disposed within the casing and axially retains the rotary member within the casing such that the seal assembly is mountable on a shaft as a single unit. | 03-05-2015 |
