Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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 |
| 7350825 | Wall-mounted elbow duct A wall-mounted elbow duct and particularly to a wall-mounted elbow duct to connect a wall-mounted water discharge pipe to a hand-held shower head mainly includes an elbow duct which houses a reverse checking mechanism and a coupler and a coupling cap. By means of th... | 04/01/2008 |
| 7303380 | Rotary engine with improved seal assembly Corner seal sockets (26) are formed at the end of apex seal slots (58) formed in a rotor (10). A twisted split washer spring (70) is positioned in each socket (26) between the base wall (28) of the socket (26) and the... | 12/04/2007 |
| 7275919 | Rotary engine seal assembly Corner seal sockets (26) are formed at the end of apex seal slots (58) formed in a rotor (10). A twisted split washer spring (70) is positioned in each socket (26) between the base wall (28) of the socket (26) and the... | 10/02/2007 |
| 7004473 | Mechanical seal device A primary object of the present invention is to achieve a high sealing performance, to collect hazardous gas contained in a sealed process fluid, and to realize an easy disposition of a mechanical seal device. A typical configuration is that the end face of a shaft ... | 02/28/2006 |
| 6994351 | Mechanical seal device and method for a scraped surface heat exchanger A sealing method and apparatus is provided for sealing between a rotating shaft and a fixed housing such as found in scraped surface heat exchangers. The sealing apparatus and method includes a sealed cartridge where a gland and a trapped seal ring can be releaseabl... | 02/07/2006 |
| 6517078 | Face seal device with additional mass for high rotational speeds A face seal device for use with components rotating at a high rotational speed includes a non-rotating face seal ring (5) and a rotary face seal ring (11). The rotary face seal ring is mounted in a loose fit for common rotation with a rotating component a... | 02/11/2003 |
| 6299174 | Mechanical seal assembly An improved mechanical seal assembly is provided for sealing rotating shafts with respect to their shaft housings, wherein the rotating shafts are subject to substantial axial vibrations. The mechanical seal assembly generally includes a rotating sealing ... | 10/09/2001 |
| 6193487 | Scroll-type fluid displacement device for vacuum pump application A scroll-type vacuum pump wherein an expander and a compressor are arranged in series, in two stages, in the same housing and driven by the same shaft. The first stage is a scroll-type expander. It is in series with a scroll-type compressor, which is the ... | 02/27/2001 |
| 6139256 | Apparatus for controlling the concentricity of a member with a centering device Conventional gas compressors use dry gas sealing arrangements mounted on a shaft of the gas compressor. Functionally, for the dry gas sealing arrangement to properly seal, the concentricity of shaft and the dry gas sealing arrangement must be maintained a... | 10/31/2000 |
| 6006617 | Starter for a motor vehicle engine, having improved sealing means A motor vehicle starter has a starter head which is driven in rotation by a motor shaft and which is displaceable in sliding movement between a rest position and a working position, with the starter head projecting outside the starter casing. A sealing ga... | 12/28/1999 |
| 5909878 | Mechanical face seal assembly A mechanical face seal assembly for sealing a rotating member with respect to a stationary member comprises at least a pair of cooperating annular sealing elements, of which one is mountable in a non-rotating manner with respect to the stationary member a... | 06/08/1999 |
| 5833441 | Windshield wiper washer motor for use in a vehicle A system and method for sealing a pressure area in a washer pump is disclosed. The system and method provides designed interference and contact points between a plurality of adjacent walls which are arranged to define a serpentine channel and which are in... | 11/10/1998 |
| 5687972 | Unitary oil seal assembly A unitary oil seal assembly intended for installation between relatively rotating inner and outer concentric members, such as, a shaft and housing of a motor vehicle is made up of a combination of a radial seal engageable with the shaft and a facial axial... | 11/18/1997 |
| 5639098 | Adjustable seal for propeller drive shaft An adjustable sealing device for sealing between rotatable drive shaft, such as a propeller drive shaft, and the aperture in a structure, such as the hull or bulkhead of a vessel, through which the shaft passes. The device is generally rigid and is compri... | 06/17/1997 |
| 5617879 | Sealing arrangement for a coolant union having a floating seal assembly A sealing arrangement for a rotating coolant union for preventing leakage forward between the outer surface of a seal carrier of a floating seal assembly of the coolant union and the inner wall of the housing, includes an O-ring seal and an annular back-u... | 04/08/1997 |
| 5538409 | Trochoidal piston side seal A piston side seal for a multi-lobed piston of a trochoidal rotary engine, consisting of an elongate, resilient metal seal member in the form of a ribbon having first and second opposed side edges wherein in use, the first edge is adapted for lateral loca... | 07/23/1996 |
| 5490682 | Split mechanical face seal A totally split mechanical face seal being installable and replaceable without necessitating breakdown of the shaft and/or housing. The inventive split seal is well suited for replacement of packing or stuffing in heavy duty or inaccessible locations. The... | 02/13/1996 |
| 5468209 | Sealing for a folding blade shaft A reliable, wear-resistant sealing for a collecting and folding cylinder includes, on each folding blade shaft, a disk (4) which has a sealing ring (13) arranged on the collar of the side facing the oil space (6) of the folding cylinder (1). The disk (4) ... | 11/21/1995 |
| 5462289 | Sealing arrangement at lead-through shafts A hygienic sealing arrangement for a leadthrough shaft passing through a cover (4) for use in the food industry or the like in which an outer seal ring (1) and an inner seal ring (2) are bonded to the cover (4) by vulcanization. Upon assembly, the side of... | 10/31/1995 |
| 5443274 | Non-contact mechanical seal A stationary sealing ring (6) surrounds a rotatable shaft (2) and is fitted to, and held by, a cylindrical guide (1a) of a seal case (1). An extremely small clearance is provided between the outer peripheral surface (6b) of the stationary sealing ring and... | 08/22/1995 |
| 5344164 | Mechanical seals The invention provides a cartridge-mounted mechanical seal in which a set of bellows acts against the rotary component to urge its face into mating contact with the stationary component face, and wherein the stationary component is mounted in the seal so ... | 09/06/1994 |
| 5342065 | Inflatable seal arrangement A seal arrangement for the gap between a surface of an element rotating around its axis which is to be sealed, and a seal carrier at a distance from it. The seal arrangement includes a sealing ring of a polymeric material, which is at least partially surr... | 08/30/1994 |
| 5333882 | Balanced mechanical seal assembly and flow ring therefor A mechanical seal assembly having dual seals in which the seal faces of the primary seal members remain essentially perpendicular to the shaft of the equipment being sealed regardless of any misalignment between the shaft and the equipment has a sleeve fo... | 08/02/1994 |
| 5324048 | Mechanical seals The invention provides a sleeve for a cartridge-mounted mechanical seal, the sleeve being formed from two connected-together metallic components. The first component is made from a material having a relatively high chemical resistance, the second from a m... | 06/28/1994 |
| 5209256 | Sealing arrangements A sealing arrangement in which a sealing member 25 seals against an annular sealing surface 20. The sealing member 25 has an annular sealing surface 29 the axis of which is offset relative to the rotational axis of the surface 20. Thus when the annular su... | 05/11/1993 |
| 5199720 | Split mechanical face seal A totally split mechanical face seal being installable and replaceable without necessitating breakdown of the shaft and/or housing. The inventive split seal is well suited for replacement of packing or stuffing in heavy duty or inaccessible locations. The... | 04/06/1993 |
| 5188377 | Externally-mounted, stationary-design, self-aligning rotary face seal An externally-mounted, stationary-design, self-aligning, rotary face-seal is provided for securement to a rotatable shaft member extending through a housing of equipment containing a media (e.g. liquid, gas or granular solids) which is to be sealed therei... | 02/23/1993 |
| 5180172 | Eccentric face seal with asymmetric closing force An eccentric face seal for rotary machines in which the closing force of the seal faces towards one another is asymmetric. The asymmetric closing force is utilized to produce corresponding variations in the face seal gap which tends to produce fluid flow ... | 01/19/1993 |
| 5149249 | Shaft seal assembly, especially for high-pressure turbocompressors A turbocompressor shaft seal, especially for a high-pressure turbocompressor, has each of its gas-side and atmosphere-side slide rings biased toward a rotor ring of the shaft and associated with blocking-liquid compartments which are interconnected by an ... | 09/22/1992 |
| 5114163 | Split mechanical face seal A totally split mechanical face seal being installable and replaceable without necessitating breakdown of the shaft and/or housing. The inventive split seal is well suited for replacement of packing or stuffing in heavy duty or inaccessible locations. The... | 05/19/1992 |
| 5098112 | Unitized dynamic facial seal A dynamic seal assembly is intended for use as a facial seal between radially inner and outer relatively rotating members having a seal body mounted on a generally L-shaped annular ring, a counterface mounted on the inner of the relatively rotating member... | 03/24/1992 |
| 5080567 | Gerator hydraulic device having seal with steel and resilient members A seal utilizing a two part construction of a rubber resilient body and a steel sealing wear member for use in a cavity to create a seal between two parts that have relative motion in respect to each other.... | 01/14/1992 |
| 5060692 | Seal ring for single-control faucet A seal ring is used in combination with a pair of substantially planar, confronting, and substantially parallel faces one of which is formed with an annular groove surrounding a pressurizable chamber and having inner and outer flanks extending transverse ... | 10/29/1991 |
| 5026077 | Omni-directional articulated mounting assembly for shaft seals A seal assembly, for maintaining a seal condition between a housing and a rotary shaft extending from the housing, it accommodates a significant degree of non-orthogonal alignment between the housing and the shaft. The seal assembly includes a rotary seal... | 06/25/1991 |
| 4993721 | Seal equipment for rotary shaft movable in the axial direction The space between a rotary shaft movable in the axial direction within and extending from a casing is sealed by a rotary shaft seal component mounted around the rotary shaft and on a cylindrical pipe between the casing and the rotary shaft. The cylindrica... | 02/19/1991 |
| 4936593 | Shaft seal A seal assembly for providing a seal between the hull of a powered water craft and a drive shaft which passes through the hull includes a flexible tubular boot which is attached to a through-hull fitting which is affixed to the hull and is attached at its... | 06/26/1990 |
| 4923377 | Self-machining seal ring leakage prevention assembly for rotary vane device A low internal leakage, rotary vane gas compressor utilizing a housing having a generally elliptical cavity, whose outer boundary is defined by an inner stator wall. A shaft mounted rotor is disposed offset from the central axis of the cavity, with an end... | 05/08/1990 |
| 4836694 | Bearing seal Seal for bearings having inner and outer rings comprising a sealing ring mounted in a cylindrical recess in one of the bearing rings and defining a radial clearance between the axially oriented shank of a retaining ring having an L-shaped cross section an... | 06/06/1989 |
| 4832351 | Self-aligning sealing means for pumps and other machinery, including rotating shafts Self-aligning stationary composite adapted for use in a sealing assembly for pumps, and other machinery including rotary shafts, which includes a pair of rings, non-rotatably disposed in coaxial, colinear relation in an annular recess of a cylindrical gla... | 05/23/1989 |
| 4832511 | High efficiency seal devices for shaft bearings A seal system for a bearing having a housing with a chamber therein for receiving a shaft supported by a bearing assembly therein. The sealing system includes three and preferably four seal devices integrally related by means of a seal ring detachably ret... | 05/23/1989 |
