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Class 277/419 - Interfitting or overlapping


Subclass of Class 277 - Seal for a joint or juncture
Definition: Plural grooves or projections wherein the groove or projection
No. of patents: 118
Last issue date: 09/02/2008


1      
NumberTitleIssue Date
7419164Compliant plate seals for turbomachinery
A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relat...
09/02/2008
7396017Shaft seal assembly
A shaft seal assembly for maintaining a seal during shaft misalignment comprising a first sealing means adjacent said shaft with a defined clearance between said shaft and said sealing means, said shaft moveable axially in relation to said first sealing means; a sec...
07/08/2008
7178806Cinchpac 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
7153093Vacuum pump
A vacuum pump (10) comprises at least one rotor shaft (12) having a rotor section (14) with a rotor (16), a bearing section (18) with a bearing (20), and a shaft sealing system (22) that is axially situated between th...
12/26/2006
7150477Rotary joints
Rotary joints are provided, to allow fluid to flow from a stationary member to a rotating member. The rotary joints include a housing, configured to fit over the rotating member, a rotatable coupling disposed within the housing, configured to be fixedly attached to ...
12/19/2006
7077645Rotary tubular kiln
A longitudinal sealing (20), which, as a rule, extends below the rotating tube (30), is proposed to increase the heating efficiency in a rotary tubular kiln, in which a rotating tube (30) is surrounded, like a bowl, by heating tunnel (32)...
07/18/2006
7066719Bore and shaft assembly
An exemplary bore for a shaft of a turbomachine includes a longitudinal axis extending generally from an inner end to an outer end of the bore, an outer seat disposed proximate to the outer end of the bore at an outer seat radius for an outer seal ring wherein the o...
06/27/2006
7055825Shaft sealing apparatus
Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an ann...
06/06/2006
7052017Rotary machine with seal
The so-called comb-type labyrinth sealing device (S1) is disposed in a gap between a rotor blade (2), i.e. a rotating member, and a labyrinth packing (9), i.e. a stationary member. The sealing device (S1) has a plurality of sealing fins (...
05/30/2006
7052014Snap together bearing isolator
The assembly includes rotor and stator elements each having an inclined plane or surface juxtaposed to each other. This is a metallic assembly and the rotor and stator also have juxtaposed cavities. The stator cavity being of sufficient size to accommodate a sealing...
05/30/2006
7044471Cartridge-type mechanical seal and back plate
A cartridge seal is co-axially secured within the circular aperture of a back plate bolted to a pump housing. Annular recesses are provided around inner and outer sides of the back plate, surrounding the circular aperture. The cartridge-type seal includes a stationa...
05/16/2006
7029393Split inlet seal for grain separators and method
A grain separator having an easily replaceable seal. The separator comprises a housing and a rotatable grain separation drum carried by the housing, the drum having an end face with an external annular bearing surface. A drive shaft extends axially into the drum thr...
04/18/2006
7011317Cart wheel with bearing components
A wheel assembly for a material handling cart includes a wheel hub having first and second openings in first and second hub faces, each concentric with and extending along a central axis of the wheel hub. First and second ball bearings are located in the openings. I...
03/14/2006
6962339Bellows type mechanical seal
A sealing system for sealing one end of a rotating shaft from fluids. The sealing system includes a resilient bellows element connected at each end to a thrust plate. The bellows acts like a compression spring forcing the thrust plates against respective sealing ele...
11/08/2005
6954405System for housing an audio system in an aquatic environment
A submersible, hydrostatic pressure tolerant enclosure for a portable audio device is disclosed. Also disclosed is a removable lid allowing for the inserting and removing of the device from the enclosure. The disclosure further provides a connector system and an aud...
10/11/2005
6928922Lubricating structure for hydraulic driving apparatus
Seal sections, which support first and second piston rods, are provided on inner circumferential surfaces of first and second cover members of a cylinder mechanism. A lubricant is supplied via supply passages and oil supply ports to first oil-retaining members, whic...
08/16/2005
6923449Baffle seal with removable ring element, and balance equipped with the baffle seal
A baffle seal at the opening (31) for the load-transmitting member (20) in a balance housing (30) has at least one sleeve-shaped ring element (11, 110), fastener means (23) attached to the housing (30) and serving to hold th...
08/02/2005
6910857Seal
A seal apparatus provides the seal between inner and outer elements. The seal apparatus has a flexible sealing element for forming a seal with a first of the inner and outer elements. At least one support element is secured to the sealing element. The seal further i...
06/28/2005
6843482Shaft seals for sealing pulverulent solids
An apparatus and method for providing a seal between first and second relatively rotatable parts of machines which operate in an environment comprising dust, grit or other finely divided solid material entrained in air, water or other fluid. The seal includes a roto...
01/18/2005
6834860Liquid seal
A non-contacting seal which includes a stationary tooth that radially overlaps a tooth on a rotatable shaft, with the sealing action resulting from controlled clearance both radially between stationary tooth and the shaft, and axially between the stationary tooth an...
12/28/2004
6726214Wrap-around severe splash seal
A wrap-around interlocked labyrinth seal adapted to be mounted upon a rotating shaft, having a rotor and a stator. A flange positioned on the stator completely encircles the rotating shaft. The stator is interlocked by positioning a cover of the stator within a radi...
04/27/2004
6485022Metallic labyrinth seal
A two-piece interlocked labyrinth seal device for providing a seal between a housing and a shaft formed of two ring members, specifically a rotor and stator, connected to each other by a plastically deforming unitizing element. The rotor further includes ...
11/26/2002
6471215Labyrinth sealing device having a grease purgeable system
A grease purgeable dynamic labyrinth sealing device is disclosed which includes a stator having an annular engagement flange on a radially inner portion thereof and a rotor having an annular engagement flange on a radially outer portion thereof. The stato...
10/29/2002
6419233Shaft seal assembly
An improved shaft seal assembly is disclosed having a stator including a main body and axial and radial projections therefrom. The rotor is radially extended and encompasses the axial and radial projections from said stator. The passageway formed between ...
07/16/2002
6390477Rotary shaft bearing isolator seal
A bearing isolator seal having a shaft seal assembly that includes a stator housing comprising two components, an interior and an exterior component, the two stator housing components being selectively connectable, and axially positionable (relative to th...
05/21/2002
6336637Sever splash seal
An interlocked labyrinth seal adapted to be mounted upon a rotating shaft, having a rotor and a stator. The stator completely surrounds the shaft. A flange positioned on the stator completely encircles the rotating shaft. The seal rotor includes alternati...
01/08/2002
6311984Bearing isolator
The improved bearing isolator permits the use of vapor or a combination of a vaporized substance with a carrier to lubricate bearings while containing the vaporized substance in the housing and permitting the carrier, having been stripped of its substance...
11/06/2001
6273429Labyrinth cartridge seal, and centrifugal compressor applications thereof
A labyrinth cartridge seal having a shell and a plurality of sleeves having corresponding portions to prevent axial and radial movement therebetween and particularly a labyrinth cartridge seal for use in a compressor for compression of a gas, such as oxyg...
08/14/2001
6220603Non retractable segmented packing ring for fluid turbines having special springs to reduce forces during shaft rubbing
A segmented seal ring and spring system for very low pressure drop zones in steam turbines for minimizing leakage between rotating and stationary components, and preventing damage and wear thereto, including a segmented seal ring, with first springs biase...
04/24/2001
6189892High differential pressure type end rotor seal
A high differential pressure type end rotor seal that is applicable to a steam cooled type gas turbine with the aim to reduce steam leakage to a minimum without being affected by deviation of fins due to thermal elongation. An end rotor rotational seal of...
02/20/2001
6168163Shaft seal for mixers
A shaft seal is interposed between a tank and a rotating shaft extending through the tank and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft. A multiple labyrinth structure is formed between the rotor and the s...
01/02/2001
6164657Seal device
A seal between a housing and a shaft is formed of two ring members interlocked together. The two ring members include a rotor and a stator which are interlocked so as to provide a labyrinth passageway for preventing contaminants from reaching a rotating s...
12/26/2000
6155574Sealing device
A sealing device (4) is provided for sealing between a first member (1) and a second member (2) and comprises a first sealing element (10), provided on the first member and extending thereabout towards the second member, and a second sealing element (20),...
12/05/2000
6113105Rotary shaft bearing isolator seal for dry comminuted materials
A rotary shaft bearing isolator seal where the shaft extends into dry comminuted material providing a stator having a very small tolerance between the rotor on the shaft and the stator containing downwardly sloping circular portions adjacent complimentary...
09/05/2000
6073777Sand resistant fluid swivel
A fluid swivel of the type that includes a transfer chamber (56) formed between inner and outer main parts (52, 54), is constructed so sand and other particles settling out of the fluid, does not find its way into the lower gap passage (86) and quickly we...
06/13/2000
6024362Seal cartridge
A seal cartridge adapted to be mounted upon a rotating shaft, including a rotor and a stator, the rotor and stator being arranged to create a labyrinth portion and a contact portion. The rotor includes a radially outwardly directed surface and the stator ...
02/15/2000
6017037Seal device
A labyrinth seal device formed of a rotor and a stator connected together by an annular protrusion located within a recess. The rotor has a slinger located on the housing side of the rotor/stator interface. The stator has a plurality of alternating annula...
01/25/2000
5967524Hybrid seal device
A system for providing a labyrinth seal and a contact seal between a housing and a shaft is formed of a stator and a rotor connected to each other. The stator includes a flange biased toward the rotating shaft to prevent fluid from exiting the housing. Th...
10/19/1999
5951020Bearing isolator
The improved shaft seal assembly is disclosed to permit the use of vapor or a combination of a vaporized substance with a carrier on one side of the seal while preventing the movement of the vapor or the vaporized substance from the housing containing sai...
09/14/1999
5925955Labyrinth seal system
A labyrinth seal system of the present invention is found in a motor having a ball bearing ring, a shaft, and a labyrinth seal washer. The ball bearing ring has an inner bearing ring with an inner ring surface. In one embodiment the labyrinth seal system ...
07/20/1999
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