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7300060 |
Seal staging system
A staged seal assembly having a plurality of staged seals and an external pressure breakdown device connected to the seal assembly and configured to be connected to an external device, wherein each...
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7014192 |
Multistage shaft sealing apparatus
A plurality of seal units are provided between a seal housing and a rotating shaft. An inside seal unit, an outside seal unit, and at least one pair of intermediate seal units are aligned in an...
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6736731 |
Cross member unit for universal joints having a trunnion seal
A cross member unit for universal joints has a cross member ( 6 ) with four trunnions ( 17 ). Each two trunnions define a common longitudinal axis ( 7 ). Each trunnion ( 17 ) has an end face ( 18...
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6612822 |
Hydraulic motor system
An improved hydraulic motor system, suitable for driving an automotive cooling fan or the like. The system is driven by grade gerotor set and an idle gerotor set which are stacked between a center...
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6371488 |
Sealing system for high pressure closed systems having a rotating member and a housing therein
A seal system for a motor pump unit includes a primary and a plurality of backup seals mounted in series within a seal housing. The primary seal is of a hydrostatic type and each of the backup...
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6293374 |
Drum brake seal structure for all-terrain vehicle wheel
A drum brake includes a brake drum attached to an axle, and a brake panel. The brake drum includes a disc portion and a cylindrical portion extending from an outer peripheral end portion of the...
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6224060 |
Pump gas seal with particle exclusion device
A gas seal construction for use on a pump to create a seal between a relatively rotatable pump shaft and housing. A flow barrier arrangement is disposed in close surrounding relationship to the...
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5727792 |
Triple cartridge seal having one inboard and two concentric seals for chemical processing pump
A chemical processing centrifugal pump is provided with a triple cartridge seal arrangement including a first seal axially spaced from a pair of concentric seals. The passageway along the pump...
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5697620 |
Seal assembly having first and second seals acting in series
To provide a better seal for example in an indexing arm for a machine tool to prevent swarf getting to the rubber seal, an outer spring seal is provided. The seal takes the form a closely wound...
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5642888 |
Temperature and pressure resistant rotating seal construction for a pump
A seal construction is provided for sealing a rotating pump shaft against passage of a fluid along its central axis. The seal construction includes front and rear sealing flanges mounted coaxially...
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5499902 |
Environmentally safe pump including seal
A motor driven environmentally safe pump includes a sealed motor housing (22) sealingly affixed to a sealed pump housing. The pump housing defines a fluid pumping chamber (43) in which is a fluid...
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5412977 |
Turbo machine with an axial dry gas seal
In a turbo machine, for example, a turbo compressor, the rotor shaft extends through and is sealed relative a housing via dry gas seals in which a seal clearance is achieved between a rotating,...
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5411366 |
Motor driven environmentally safe pump
A motor driven environmentally safe pump includes a sealed motor housing (22) sealingly affixed to a sealed pump housing. The pump housing defines a fluid pumping chamber (43) in which is a fluid...
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5340273 |
Sealing and pumping means and methods environmentally leak-proof pump with misting chamber defined therein
An environmentally leak-proof pump is provided including: an environmentally leak-proof motor housing having located therein a motor for rotatably driving a rotating shaft; a piston seal axially...
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5333956 |
Trolley wheel assembly
A trolley wheel assembly (10) securely sealed to prevent loss of lubricant therefrom and entrance of contaminants therein. The assembly (10) comprises an inner race (12) disposed about an axis of...
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5312225 |
Axially thrust-compensated turbo machine
In a turbo machine with magnetic bearings on both sides and dry gas seals for the rotor, the axial thrust acting upon the rotor and generated by the pressure difference between the pressure side...
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5261676 |
Sealing arrangement with pressure responsive diaphragm means
A seal construction is provided for sealing a rotating shaft against passage of a fluid along its central axis. The sealed construction includes a sealing flange fixedly mounted on the shaft and...
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5246087 |
Device for radially transporting a medium to a rotating station
A device for sealingly transporting medium, for instance lubricating oil, from a source to a receiving station rotatably movable relative thereto, which device comprises: a source for the medium;...
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5217233 |
Spiral groove seal system for sealing a high pressure gas
A seal system for sealing a housing and rotatable shaft against leakage of a gas under high pressure; hydrogen is an example. The system, using multiple seals in tandem, provides a stepped...
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5133639 |
Bearing arrangement for centrifugal pump
The invention is an improvement in a centrifugal pump of the type having two or more pumping stages. Each stage includes a stationary diffuser and a companion rotatable impeller with a wear ring...
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5096396 |
Rotary apparatus having passageways to clean seal chambers
Improvements are disclosed in a rotary, lobar, positive-displacement pump and in a rotary, centrifugal pump, whereby all product-contacting areas of the pumps can be effectively cleaned without...
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5058905 |
Seal
The sliding face (22) of a gas lubricated slide ring seal has a slide ring (20) which is displaceable in the axial direction at a wall (4) to be sealed and lies against the sliding face (21) of a...
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5029685 |
Oil sealing structure for a hydraulic device for an automatic transmission
Seal rings are set in oil grooves which are situated at both sides of two oil passages communicating two hydraulic actuators which operate oppositely. First and second seal rings oil-tightly seal...
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4964646 |
Fluid handling apparatus with shaft sleeve and extension
In a fluid handling appartus comprising a multi-stage mechanical seal assembly, an additional mechanical seal assembly to maintain a substantially constant exit pressure of leakage from the last...
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4936821 |
Centrifugal separator with rotating seals on the fixed upper head
The liquid being handled is introduced through a centrifugal conduit 1, is separated according to the different density and the two liquid phases exit through conduits 4 and 5. The centrifugal...
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4846728 |
Floating seal arrangement for centrifugal separators and like rotating apparatus
Rotating fluid-handling apparatus, e.g., a centrifugal separator has at least first and second elements which rotate relative to the other about a common axis. A seal assembly provides fluid-tight...
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4699575 |
Adhesive pump and it's control system
An improved adhesive pump and pump control system for automatically changing the flow rate of adhesive materials being dispensed onto a workpiece in conformance with changes in movement of a robot...
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4660786 |
Pivot bearing arrangement for the control surface of a missile
A pivot or bearing arrangement for the pivotable control surface of a guidable missile, especially a projectile which can be fired through the intermediary of the gas pressure generated by a...
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4629196 |
Coupler and manifold assembly with differential vacuum seal means
A coupler and manifold assembly which makes it possible to turn the shaft and impellers of an absorption chiller circulating pump with an external drive means instead of a hermatically sealed drive...
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4515377 |
Rotary seal assembly having a liquid filled bellows
A rotary seal assembly for sealing a rotating shaft, such as the shaft of a centrifugal pump. The assembly has a first sealing element fast on the shaft and a second sealing element arranged...
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4453604 |
Turbodrills
The turbodrill disclosed consists of a shell (1) attached to the drilling string and provided with an opening (3) in the side surface, a multistage turbine and a hollow shaft (6) supported in the...
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4443015 |
Cartridge type rotary shaft seal with bearings and bellows
A cartridge type assembly is provided for use in conjunction with a housing wall having an opening thereof through which a rotary shaft projects. The assembly includes an inner bearing race...
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4434941 |
Sealing system for the air feed of a rotatable air nozzle system
A system for the axial feed of air to one of two air nozzles (7, 7) which together are rotatable about a longitudinal center axis (4), comprising a housing (6) having a pair of stationary air feed...
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4395833 |
Sealing and lubricating system for a dredge
The dredge is of the type having a bucket wheel, driven by a hydraulic motor through a gearbox, on the front of a bucket wheel carrier hinged at its rear to the dredge hull, and lowered to or...
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4294454 |
Rotary seal unit
A rotary seal unit is fitted between a shaft and a surrounding member. The unit comprises a runner fixed to the shaft and within an outer housing fixed to the surround member. Mating sealing rings...
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4272084 |
High pressure shaft seal
A multiple stage mechanical end face seal assembly which has been developed to improve seal reliability and performance during both steady-state and transient operation. The seal assembly features...
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4268232 |
Intermeshing gear pump with sealing means comprising two concentric slide rings
A gear pump having a housing and a pump space or chamber within which there are arranged two intermeshing, fluid-conveying gears, each gear being arranged upon an associated shaft. Each shaft is...
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4204948 |
Self-purging seal
In a moving matrix magnetic separator in which a matrix device moves relative to a processing device and a seal assembly seals a longitudinal section of the matrix device to an associated...
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4173129 |
Universal joint structure with improved seal
An improved seal for use in a universal joint structure. The seal includes a C-shaped seal ring which is loaded into sealing engagement with an associated bearing cap by a load ring compressively...
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4165203 |
Pressurized medium powered device
A pressurized medium powered device has a motor of the external rotor type, both the stator and the rotor of the motor having registering channels which communicate with one another across an...
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4139220 |
Swivel joint sealing system
A fluid conducting swivel joint is disclosed which has a sealing system effective against the leakage of fluids of extreme temperature. The joint consists of two housings mounted for relative...
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4071255 |
Flexible seal element with reinforced drain labyrinth
A flexible seal element with a reinforced drain labyrinth is disclosed for use on the outer seal ring of a seal assembly located between a roll end face and a bearing chock in a rolling mill,...
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4043619 |
Sliding ring seal
This disclosure relates to a sliding ring seal for bearings which includes a pair of annular members, a pair of annular rings constructed of metallic material, a flexible non-metallic annular seal,...
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4029446 |
Sealing arrangement for gear-type fluid displacing machines
A gear-type fluid displacing machine includes a housing having a chamber and two side sections overlying opposite ends of the chamber, a pair of mating gears in the chamber for generating a high...
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4013297 |
Static seal with an open rotational mode
A seal is disclosed for a shaft journalled to rotate within a sleeve. The seal comprises annular members mounted between the shaft and the sleeve for relative movement along an axis common to the...
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3967674 |
Sealing structure for a machine for centrifugally casting pipes and machine including said structure
The sealing structure comprises an annular sealing member disposed in an annular recess in a ring fixed to the non-rotating casing of a centrifugal casting machine. The sealing member bears...
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3894741 |
Self-pressurizing seal for rotary shafts
A self-pressurizing shaft seal for an oil filled submersible motor is characterized by an inboard sprial grooved face seal and an outboard conventional face seal disposed in series relationship...
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3880434 |
Sealing device for shaft of machines
The device is constituted by a first dry-friction seal which prevents a first fluid from penetrating into an intermediate chamber, a second dry-friction or lubricated seal which prevents a second...
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3782739 |
METHOD AND APPARATUS FOR KEEPING FREE THE AGITATOR SHAFT SEALS FROM POLYMERIDE IN POLYMERIZATION VESSELS WITH BOTTOM DRIVE
A method and apparatus for keeping an agitator shaft seal free from polymeride in polymerization vessels with bottom drive and contents in excess of 20 m 3, in which a flushing liquid is supplied...
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3748003 |
MULTIPLE ELEMENT BEARING SEAL
A bearing seal in which a first annular ring of resilient nonmetallic material is positioned in oppositely disposed grooves in the inner and outer racerings of the bearing assembly. A second...
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