Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7850173 | Repairable labyrinth seal A repairable labyrinth seal of a gas turbine engine comprises at least one fin having a base with a thickness and a tip portion extending therefrom. A shoulder distinguishes the base from the tip portion. The shoulder defines a machining site suitable for receiving ... | 12/14/2010 |
| 7249769 | Seal apparatus A seal (40) provides sealing between two pressure zones (60, 62) and a rotating and non-rotating member (42, 52) by providing a first sealing member (46) between two seal lands (48, 50). A second seal (64) is mounted between... | 07/31/2007 |
| 7246792 | Ornamental fence insert An ornamental fence insert for a picket fence. The picket fence is of the type having two upper rails and a plurality of pickets extending through the rails to define spaces therebetween. The ornamental fence insert, having diametrically opposed projecting brackets,... | 07/24/2007 |
| 7178807 | Shaft mounted seal device and method for a scraped surface heat exchanger A scraped surface heat exchanger includes a seal assembly between a rotating tube and the end housing. The seal assembly is removable by removing the tube. ... | 02/20/2007 |
| 7165771 | Brush seal and method of using and making same A brush seal assembly is provided for sealing components which move relative to one another. One of the components includes a recess or groove for accommodating a clamping sleeve which supports bristles. A support plate which is formed separately from the component ... | 01/23/2007 |
| 7090220 | Cartridge-type bearing seal for machine tool spindle A cartridge type bearing seal facilitates the prevention of contaminant ingress between a spindle rotor and a spindle housing, particularly in situations where a circumferentially uniform fluid pressure is generated within the annular volume of the spindle housing. ... | 08/15/2006 |
| 7066467 | Sealing device for water pump bearings A sealing device for a water pump bearing employs a seal member without an axial lip, and having only a radial lip. The sealing device includes an annular seal member which is fixed to a shoulder portion of one end in an axial direction of an outer race of a water p... | 06/27/2006 |
| 7052014 | Snap 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 |
| 6962482 | Turbine shroud segment A shroud segment for being incorporated in a gas turbine engine having a turbine case and a rear turbine case connected with a rear end of the turbine case so as to suppress influence of hot combustion gas on the turbine case and the rear turbine case, is provided w... | 11/08/2005 |
| 6935634 | Steam turbine packing spring A packing spring for a steam turbine comprising a flat, elongated spring body of specified length, width and thickness dimensions; a flange at one end of the main spring body; and at least one bend in the main spring body, located substantially midway along the leng... | 08/30/2005 |
| 6932350 | Windback labyrinth seal that accommodates a pressure differential for rotating shafts A segmented labyrinth seal (10) having a windback configuration formed around a rotatable shaft for preventing leakage of oil from a bearing housing having a first face (22) and a second face (23). An exterior cylindrical surface (19) and... | 08/23/2005 |
| 6840519 | Actuating mechanism for a turbine and method of retrofitting One embodiment of the present invention comprises an actuating mechanism for a turbine comprising a compliant member (meaning at least one compliant member) comprising a series of serpentine folds forming a plurality of fold sections and a central cavity (meaning at... | 01/11/2005 |
| 6834859 | Labyrinth grease hub seal The present invention provides a labyrinth sealing assembly for placement between a shaft and a bearing housing comprising an annular stator having a body portion, an axially inner engagement surface, an axially inner extending portion extending from a radially oute... | 12/28/2004 |
| 6805358 | Magnetic seal The invention herein is a seal to seal a rotating shaft to housing. The seal has a stator and a rotor, magnetically and mechanically coupled. The mechanical couple is provided through an interlocking annular groove provided on one component and a flange face on the ... | 10/19/2004 |
| 6786488 | Seal structure, turbine having the same, and leak-preventing seal system for rotating shaft In order to decrease gas leakage and in order to restrict the friction between the brush and the rotating shaft, a seal structure for a rotating shaft comprises a stator section, a rotating shaft, a groove, a brush, a spring member, and a connecting hole induces flu... | 09/07/2004 |
| 6719296 | Seal for a rotating member A face seal assembly is provided having an annular seal body mounted in an axially moveable relationship to a seal support structure. A piston ring is disposed between the annular seal body and the seal support structure forming a secondary seal. A first locator spr... | 04/13/2004 |
| 6715765 | Sealing structure of a ball bearing A sealing structure of a ball bearing is disclosed wherein a seal or a shield is provided on at least one side of the ball bearing, the ball bearing allowing rotation of either an outer ring or an inner ring. A large number of blades extend radially along an outer s... | 04/06/2004 |
| 6682077 | Labyrinth seal for disc turbine A disc turbine has a rotor assembly of spaced apart discs with at least one disc equipped with an annular labyrinth seal whose grooves interdigitate with a corresponding labyrinth seal mounted in the sidewall of the rotor housing. A pattern of aligned thr... | 01/27/2004 |
| 6651986 | Retractable packing ring lower half segment retaining key and method for retaining retractable packing ring lower half segment A rotary machine has a stationary component with circumferential grooves and a rotatable component, as well as annular packing or sealing ring segments movable toward and away from the rotating component. To prevent circumferential displacement of the low... | 11/25/2003 |
| 6588764 | Segmented labyrinth seal assembly and method A segmented labyrinth seal assembly and method according to which a plurality of arcuate segments extend around a rotating shaft with the shaft being engaged by a sealing portion of each segment, thus sealing against the movement of fluid in an axial dire... | 07/08/2003 |
| 6572113 | Seal fitting A seal assembly for co-operation with a shaft comprising a seal member which, in use, in a first position, forms a seal against the shaft, a seal housing for retaining the seal member, means for applying a radially inward force to the seal member and mean... | 06/03/2003 |
| 6572114 | Seal ring for steam turbine A seal ring provided between a rotating portion and a fixed portion in a rotating machine of steam turbine and the like is improved to accurately carry out predetermined movement so as to not cause deterioration of sealing performance. The seal ring is sp... | 06/03/2003 |
| 6485022 | Metallic 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 |
| 6478304 | Sealing ring for non-hermetic fluid seals A sealing ring is provided for non-hermetic fluid seals with a restricted passage between sealing elements rotating relative to one another the sealing has a carrier and at least one sealing rib extending radially on the outside or inside around the carri... | 11/12/2002 |
| 6471215 | Labyrinth 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 |
| 6402157 | Brush seal and method of using brush seal The invention provides a brush seal, and a method of using a brush seal, for providing a seal between a support housing and a rotating shaft. The brush seal comprises a support portion; a back plate connected to and extending from the support portion on a... | 06/11/2002 |
| 6390477 | Rotary 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 |
| 6386546 | Seal 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 ... | 05/14/2002 |
| 6367807 | Labyrinth seal assembly A labyrinth seal for use in a centrifugal pump. The seal may eliminate rotating surfaces from rubbing directly against groove surfaces during installation thereby eliminating or reducing the scraping of material from rotating surfaces. Therefore, generati... | 04/09/2002 |
| 6290234 | Shaft assembly having improved seal arrangement A sealed, rotatable shaft assembly includes a housing that defines a bore that extends from an area exterior to the housing to an area interior to the housing. A shaft is rotatably disposed in the housing about an axis of the bore. The shaft extends throu... | 09/18/2001 |
| 6273683 | Turbine blade platform seal A rotating blade group 90 for a turbo-machine having an improved device for sealing the gap 110 between the edges 112,114 of adjacent blade platforms 96,104. The gap 110 between adjacent blades 92,100 is sealed by a seal pin 20 its central portion 110 and... | 08/14/2001 |
| 6257586 | Combined brush seal and labyrinth seal segment for rotary machines A brush seal is comprised of arcuate seal segments having ends cut in a radial direction with bristles "canted" at an approximate 45° angle relative to radii of the segments, leaving triangular regions adjacent one end of each segment devoid of bristles ... | 07/10/2001 |
| 6247702 | Bearing shaft seal A bearing shaft seal assembly for an electric motor positioned within an end frame of the motor in order to inhibit the passage of external contaminants axially along a shaft extending out of an end frame into the interior of the motor. The seal assembly ... | 06/19/2001 |
| 6241252 | Labyrinth seal and method of making same A seal assembly is adapted for mounting between a rotatable shaft and an outer stationary housing, the seal assembly being made up of a metal sleeve in surrounding relation to the shaft, a non-metallic resilient seat in surrounding relation to the sleeve,... | 06/05/2001 |
| 6206378 | Gas turbine spindle bolt seal device A sealing device in a gas turbine that uses steam for cooling high temperature portions of the gas turbine and then recovers the steam. The sealing device prevents the steam from leaking at a spindle bolt portion of the turbine disc (8). The spindle bolt ... | 03/27/2001 |
| 6182972 | Unitary bearing seal A mechanical labyrinth seal for rotating shafts having first and second ring members. The first ring member, includes a series of annular axially extending grooves and flanges. The second ring member is adopted for insertion into said first ring member wi... | 02/06/2001 |
| 6173958 | Hybrid labyrinth and cloth-brush seals for turbine applications A seal is provided between relatively moving parts and includes plural layers of woven material such as metal, polymer or ceramic materials. The layers are secured to one another and to a first part of the relatively moving first and second parts and exte... | 01/16/2001 |
| 6168163 | Shaft 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 |
| 6145844 | Self-aligning sealing assembly for a rotating shaft A self-aligning, sealing assembly in accordance with the present invention includes a sealing apparatus and at least one preloading device. The sealing assembly is mounted in machinery which has a rotating shaft and a stationary member with an inner surfa... | 11/14/2000 |
| 6142731 | Low thermal expansion seal ring support Today, the trend is to increase the temperature of operation of gas turbine engines. To cool the components with compressor discharge air, robs air which could otherwise be used for combustion and creates a less efficient gas turbine engine. The present l... | 11/07/2000 |
