Matches 1 - 50 out of 175 1 2 3 4 >
Match Document Document Title
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...
7494130 Bi-directional pattern for dynamic seals  
A bi-directional dynamic seal advantageously provides for the return of captured lubricant to the lubricant side regardless of a direction of relative rotation between the seal and the shaft. The...
7445087 Seal-less head apparatus  
A mill head assembly apparatus utilizing centrifugal hydrodynamic force to circulate lubrication oil while retaining the lubricant without the need for a replaceable (contact-type) seal, the...
7377518 Mechanical seal ring assembly with hydrodynamic pumping mechanism  
A seal ring configuration adapted to be disposed about a shaft to seal a fluid at a pressure differentials across the seal. The seal ring configuration comprises a mating ring and an axially...
7320468 Sealing arrangement  
A sealing arrangement for sealing a leakage gap between relatively moveable parts in a flow path between a region of high fluid pressure and a region of low fluid pressure comprises a sealing...
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...
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...
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...
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...
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...
7004119 Apparatus and method for rotating sleeve engine hydrodynamic seal  
A hydrodynamic face seal 100 for sealing between the cylinder head 300 and rotating sleeve 200 of a rotating liner engine. The face of the face seal provides a sealing zone 130 for...
6877950 Method and device for minimizing oil consumption in a gas turbine engine  
A method of minimizing oil consumption in a gas turbine engine, by avoiding reliance on air intake into the engine oil circuit for bearing chamber oil sealing purposes. The engine oil circuit has...
6726213 Bi-direction rotatable face seal with spiral grooves  
A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted...
6705844 Dynamic seal  
A seal is disposed between a rotating part and a stationary part. At least one of the parts is provided with projections which protrude into the seal gap. The seal gap ( 5 ) extends approximately...
6663367 Shaft seal structure of vacuum pumps  
A Roots pump rotates a plurality of rotors by a pair of rotary shafts to draw gas. Each rotary shaft extends through a rear housing member of the Roots pump. An annular shaft seal is fitted around...
6655693 Non-contacting gas compressor seal  
A non-contacting gas compressor seal assembly is disclosed with an intermediate buffer chamber. The process gas is corrosive or otherwise hazardous and is contained from entering the atmosphere by...
6619664 Wear improvement to textured lip seal  
Multiple circumferential rows of textured features are formed between the outer peripheral edge and the inner peripheral edge of a seal. The multiple circumferential rows of textured features form...
6578850 Dynamic seal for a drive shaft  
A dynamic seal for a drive shaft including a seal housing with at least one inlet for injecting a fluid, (i.e., a liquid or gas) into the seal. The seal also has an expeller device, such as an...
6505836 Non-contact type shaft sealing device  
A non-contact type shaft sealing device comprising a stationary sealing ring ( 9 ) disposed to axially oppose a rotational sealing ring ( 2 ) provided on a rotational shaft ( 1 ) of a device that...
6494460 Rotary barrier face seal  
Rotary barrier face seal of the non-contact type seal with helical grooves for a housing and a shaft, comprising means for introduction of an external barrier fluid towards the sealing interface....
6485021 Mechanical seal unit with temporarily connecting inlet and outlet grooves  
According to the present invention, the mechanical seal unit for pumps including a fixed seal ring facing a lower pressure space and a rotatable seal ring facing a higher pressure space, comprises:...
6481720 Stern tube sealing apparatus  
The invention provides a stern tube sealing apparatus which prevents an abrasion by cooling and lubricating a sliding contact surface of a first seal ring, prevents a foreign substance and a...
6471214 Tandem axial face seal for pumps for cryogenic media  
A seal suitable for a driveshaft of a pump for cryogenic media. The seal can operate without extraneous confining gas, runs frictionless and assures a long service life, which was unattainable so...
6460635 Load responsive hydrodynamic bearing  
A load responsive hydrodynamic bearing is provided in the form of a thrust bearing or journal bearing for supporting, guiding and lubricating a relatively rotatable member to minimize wear thereof...
6454268 Shaft seal device  
A shaft seal device including a casing having a hollow portion, a rotable shaft extending inside the casing from a sealed fluid region to an outer region, a non-contact type first mechanical seal...
6446976 Hydrodynamic face seal with grooved sealing dam for zero-leakage  
A mechanical face seal includes a pair of relatively rotatable seal rings having opposing seal faces which define a sealing region therebetween. The sealing region extends radially between the...
6428013 Reverse seal  
An improved dual lip radial shaft seal is disclosed. The free end of the dual lip seal extends toward the air side of the seal. Optionally, the dual lip seal has an oil side excluder lip seal, an...
6427790 Rock bit face seal having lubrication gap  
A seal arrangement useful in a rolling cutter rock drill bit includes a pair of rigid rings disposed between the leg of the bit body and the rolling cutter. The rings have opposing faces, which...
6386547 Dual non-contacting mechanical face seal having concentric seal faces  
A mechanical seal for providing fluid sealing between a housing and a rotatable shaft includes a first seal ring having a first seal face and a second seal ring having a second seal face. The first...
6347800 Fail safe L-shaped spring carrier for gas seals  
The present invention relates to a shaft seal ( 1 ) comprising a sealing element ( 14 ) mounted co-axially to a rotary sealing ring ( 10 ) to form a primary seal between opposed faces thereof to...
6341782 Lubricated seals having micropores  
A lubricated hydrostatic seal comprising (a) surface regions having opposing surfaces; (b) a plurality of micropores in one or more of said surfaces having a pore geometry; and (c) a flow of fluid...
6338490 Sealing arrangement with automatic clearance adjustment  
The seal is composed of butt-jointed segments ( 1 ) in which the bearing surface ( 18 ) on a rotating part ( 2 ) subject to wear, includes a hollow chamber ( 20 ) communicating through calibrated...
6325380 Face seal assembly  
A face seal assembly comprises a pair of co-operating seal rings of which one is provided for mounting on a rotary component and the other on a stationary component. The seal rings have...
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...
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...
6244599 Floating brush seal  
A seal assembly which cooperates between relatively rotatable members for creating a sealing relationship between areas of high and low pressures. The assembly includes a face seal arrangement...
6213472 Shaft seal  
The invention relates to a non-contacting shaft seal formed between a rotating sealing ring (3) and a non-rotating circular sealing element (1). The sealing element (1) is spring-loaded towards the...
6213473 Double gas seal with coplanar pad faces  
A double gas pressure seal 10 is provided for sealing between a stationary housing 14 and a rotary housing 26. The gas pressure seal includes a stationary ring 42 and a rotary ring 40 each having a...
6189896 Controlled leakage rotating seal ring with elements for receiving and holding a lubricant on a face thereof  
A seal ring mountable to a rotating member for rotation therewith, the seal ring including a gap or other feature providing controlled leakage therethrough, a radial inner circumferential face, an...
6155572 Non-contacting mechanical face seal including fluid control system  
A mechanical seal for providing fluid sealing between a housing and a rotatable shaft includes a first seal ring having a first seal face and a second seal ring having a second seal face. The first...
6152452 Face seal with spiral grooves  
The present invention provides a face seal with spiral grooves comprising: a rotating ring including a sealing face; a stationary ring including a sealing face; the face is confronted with the face...
6145840 Radial flow seals for rotating shafts which deliberately induce turbulent flow along the seal gap  
A face seal is provided for a rotating shaft for sealing between a normally high pressure region and a normally lower pressure region, having a seal ring shaped to form a gap between the ring and a...
6145843 Hydrodynamic lift seal for use with compressible fluids  
This invention discloses a completely different hydrodynamic gas seal configuration from both the Rayleigh bearing and other prior art. Instead of the shallow, wide, and short single pocket...
6142478 Gas lubricated slow speed seal  
A contacting mechanical end face seal for use in applications having slow shaft rotational speeds, such as mixers, agitators and reactors, includes at least one seal ring having a face with spiral...
6135458 Static pressure non-contact gas seal  
A static pressure-type generating non-contact gas seal in which a diameter d2 of a second outer circumferential portion (42) of a stationary seal ring (4) in contact with a second O-ring (62) is...
6116609 Fluidic feedback pressure regulation system for a mechanical seal  
A fluidic feedback pressure regulation system employs one or more fluids within a mechanical seal to control one or more other fluids. The system includes a fluid manifold and a movable...
6109376 Face seal having strain induced face geometry  
A mechanical seal for rotary rock bits with a uniquely formed hydrodynamic wave geometry on the sealing faces. The sealing faces are first manufactured flat and smooth, then upon assembly are...
6073934 Mechanical seal  
A sealing arrangement for a pump including an electric motor/generator and a pump housing, said sealing arrangement including: an intermediate barrier liquid chamber; a mechanical face seal...
5997004 Hybrid floating brush seal  
A hybrid floating brush seal (10) generally includes a brush (30) that encircles a rotating shaft (12). The brush (30) includes a bristle portion (32) that is carried by a holder (34). A self...
5947481 Wavy face ring  
An improved annular face seal ring mountable in opposed alignment to another face seal ring to form a sliding interface in a mechanical seal assembly. It includes a sealing ring face on an axially...
Matches 1 - 50 out of 175 1 2 3 4 >