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| Number | Title | Issue Date |
| 7370864 | Balanced mechanical seal assembly A mechanical seal for providing a fluid-tight seal between a rotating shaft and a stationary housing comprises a first pair of seal members for sealing and separating a process fluid from a barrier fluid and a shuttle. The first pair of seal members comprises a firs... | 05/13/2008 |
| 7338049 | Self-cooling ferrfluid seal A self-cooling ferrofluid seal includes a housing having a housing case and an external pole piece integrally connected to the housing case where the housing case has a plurality of heat dissipating surfaces, a magnetic circuit within the housing formed in conjuncti... | 03/04/2008 |
| 7293778 | Systems and methods for sealing between stators and rotors A seal is used between a housing and a shaft having an axis. The seal includes a first portion and a second portion engageable with each other and movable relative to each other. The first portion and the second portion are configured to be received in a cavity betw... | 11/13/2007 |
| 7255929 | Use of spray coatings to achieve non-uniform seal clearances in turbomachinery The invention provides spray coatings to achieve circumferentially non-uniform seal clearances in turbomachines. In steam and gas turbines it is desirable to assemble the machines with elliptical seal clearances to compensate for expected casing distortion, rotordyn... | 08/14/2007 |
| 7237853 | Support roller of crawler type traveling apparatus The invention provides a support roller of a crawler type traveling apparatus which can prevent a rotational resistance from being increased by the soil or the like, and can stably achieve a function serving as the support roller for a long time. The invention provi... | 07/03/2007 |
| 7066469 | Seal assembly for machinery housing A seal assembly for a machinery housing includes a seal ring having a micro heat exchanger and a gland plate for securing the seal ring to the machinery housing. The gland plate includes a cooling fluid port in communication with the micro heat exchanger. ... | 06/27/2006 |
| 7040627 | Cinchpac self-loading rotary shaft seal A seal assembly which is secured to a rotating shaft and which seals around the shaft. The seal assembly has molded grooves adjacent to the shaft which grasp the shaft and prevent leakage. ... | 05/09/2006 |
| 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 axial direction. The inside seal unit contacts fluid to be sealed. The o... | 03/21/2006 |
| 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 maintaining a lubricant layer of about 2 micrometers betw... | 02/28/2006 |
| 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 |
| 6962341 | Coupling for feeding a heat-exchange medium to a rotating body A coupling for supplying a heat-exchange liquid to a load has a shaft extending from the load and centered on the axis. A nonrotating housing surrounding the shaft at the tube end has a connection so that the heat-exchange liquid can be pumped into the load. A rolle... | 11/08/2005 |
| 6848689 | Shaft seal A shaft seal in which a rotary sealing part is mounted coaxially with the sealing element and forms therewith a contactless primary seal between opposed faces of the sealing element and rotary sealing part to substantially prevent fluid flow across the primary seal ... | 02/01/2005 |
| 6698669 | Pivot flow joint for high-pressure flow devices A pivot flow joint for high-pressure fluid-flow devices of the type including a rotating flow member connected to a non-rotating flow member. The pivot flow joint includes first and second axially-aligned seal bushings secured to the non-rotating and rota... | 03/02/2004 |
| 6692237 | Rotary piston cylinder device with radially extending cylinder chambers intersecting at a rotary axis A rotary cylinder apparatus which prevents a fluid from leaking from a contact portion of a piston and a cylinder member and consequently enables efficient rotation. The rotary cylinder apparatus comprises: a rotary cylinder member 2 which has cylinder ch... | 02/17/2004 |
| 6688602 | Shaft sealing mechanism of compressor with mechanical seal The mechanical seal (3) includes: a rotary side sliding ring (32) which is supported by the large diameter side outer circumferential face (23) of the annular step section (21) of the rotary shaft (2) via the rotary side O-ring (37) and press-fitted into ... | 02/10/2004 |
| 6589022 | Compressor having a seal cooling structure in which all refrigerant fluid supplied to the compressor is used to cool compressor shaft seals The compressor has a cooling structure to effectively cool a shaft seal device interposed between a housing of the compressor and a rotary shaft. The front housing has a through-hole through which the rotary shaft extends, and the shaft seal device is arr... | 07/08/2003 |
| 6540232 | Articulated fitting for a vehicle seat In an articulated fitting (1) for a vehicle seat, in particular for a motor-vehicle rear-seat bench, having a lower fitting part (5) and an upper fitting part (8), which can rotate relative to the lower fitting part (5), for attaching the backrest of the ... | 04/01/2003 |
| 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 inside and outside diameters of the seal rings to seal a fluid... | 09/10/2002 |
| 6062815 | Unitized seal impeller thrust system A unitized seal impeller thrust system includes an impeller unit which includes a tubular neck portion that has flat surfaces on opposite sides of one another. The impeller unit includes a plurality of radially extending blades and a circular trough surro... | 05/16/2000 |
| 6050788 | Pump with improved seal for filtration systems A pump for pumping fluids in a filtration system is disclosed. The pump has a thrust balancing means to reduce axial loads on motor bearings of the pump during operation of the pump. A drive system of the pump includes an elongate flexible shaft interconn... | 04/18/2000 |
| 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 |
| 5351972 | Inside/outside mounted double mechanical face seal The present invention consists of a shaft packing with an inner seal (4) and an outer seal (2) which are biased by means of springs (5) and an intermediate ring (1). The spring package and the major part of the shaft packing are positioned on the outside ... | 10/04/1994 |
| 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 |
| 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; and a rotation bearing assembly comprising: at least one ro... | 09/21/1993 |
| 5213340 | Balanced mechanical seal A mechanical seal assembly is disclosed 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. The seal assembly h... | 05/25/1993 |
| 5203575 | Balanced mechanical seal assembly and flow ring therefor An axially floating annular flow ring is provided for use in a gland mounted to rotary equipment concentrically to the equipment shaft. The ring has an outer circumferential surface for mounting to the gland interior adjacent to gland port mouths opening ... | 04/20/1993 |
| 5181729 | Seal device Two identical mechanical seals (6, 7) and (8, 9) respectively and an intermediate spring device (17) are arranged in a holder which is easily replaceable. The spring (17) is common for the two seals and is connected to sockets (13) and (14) respectively w... | 01/26/1993 |
| 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 mating ring (10) which is fastened on an intermediate sleev... | 10/22/1991 |
| 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 separator comprises disks for sealing (6, 11 and 19) which are... | 06/26/1990 |
| 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 sealing between the elements, which define passages for fl... | 07/11/1989 |
| 4842494 | Refrigerator compressor/internal combustion engine unit of the rotary piston type A machine unit which includes a refrigerating compressor and an internal combustion engine of the trochoid type including pistons revolving in a planetary arrangement on eccentrics of the same eccentric shaft, as well as a ventilatable intermediate sealin... | 06/27/1989 |
| 4790543 | Sealing device governed by centrifugal force A sealing device for a slot between two elements, which are rotatable relative to each other, e.g. an outer and an inner race ring in a rolling bearing, incorporates a flexible sealing portion having a lip, which contacts a sealing surface surrounding the... | 12/13/1988 |
| 4773654 | Shaft seal assembly, in particular for an apparatus for continuous processing of very viscous media A shaft seal assembly for an apparatus for continuous processing of very viscous media, in particular for producing high molecular weight polymers, having parallel shafts (1) carrying at least two cooperating processing tools (3), with which shafts feed a... | 09/27/1988 |
| 4752077 | Sliding ring seal A seal between rotating machine components, such as two hollow shafts, is constructed as a sliding ring seal. An axially and radially effective sealing is achieved by using a centrifugal force for causing a wedging effect on sealing elements which are axi... | 06/21/1988 |
| 4687350 | Sealed bearing for ring roller of cold pilger rolling mill A sealed bearing arrangement for the ring rollers of a cold rolling mill is provided with a rolling bearing mounted on a journal of a rolling shaft and seated in the bore of a chock, and a pair of housing covers fastened to said chock on respective sides ... | 08/18/1987 |
| 4575914 | Assembly-procedure and relative hinge-assembly for use with lubricated-type crawler tracks The hinge-assembly to which the invention relates has a sleeve (3) located about the central section of a hinge-pin (2), and two thrust-rings (7) associated as one with the pin itself and abutting the ends (33) of the sleeve, the rings themselves housing ... | 03/18/1986 |
| 4575265 | Seal for shaft bearings A seal for a bearing having a housing with an opening therein for receiving a shaft in which a bearing assembly is mounted in the housing and has an inner race for receiving the shaft. A seal consisting of a ring having a radially extending, outwardly fac... | 03/11/1986 |
| 4560173 | Mechanical seal assembly with coolant circulation structure A mechanical seal construction of the double or tandem-type, wherein a stationary ring, preferably the gland ring, is provided with a circulation inducing dam positioned within an annular chamber defined between the inner and outer seals. The dam extends ... | 12/24/1985 |
| 4553762 | Shaft seal ring A seal ring has a reinforcing ring with an inwardly-directed conical extension and a lip ring having elastic properties which embraces said extension in the manner of a U for a relatively-rotatable seal and bears on the shaft to be sealed as a static seal... | 11/19/1985 |
