| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 277308000 | Contained or compressed by gland member in packing box | 8 |
| 20080265515 | DRIVEN SEAL ASSEMBLY FOR ROTARY DRIVE SHAFT OF MOTOR - A driven seal assembly is provided for a shaft rotated by a motor disposed in a motor housing and having a seal housing adjacent to the motor housing through which the shaft extends. A first stationary seal seat is mounted on the shaft and secured in a bore of the seal housing. A first rotary seal is frictionally fit on the shaft adjacent the first stationary seal seat. A second stationary seal seat is mounted on the shaft and is secured in a bore of the motor housing. A second rotary seal is frictionally fit on the shaft adjacent the second stationary seal seat. A spring surrounds the shaft and provides bidirectional axial forces on the first and second rotary seals against the first and second stationary seal seats. A positive drive mechanism is mounted on the shaft between the first and second rotary seals in a driving, mating relationship therewith and includes a first driving element in driving engagement with the first rotary seal and a second driving element in driving engagement with the second rotary seal. The spring is placed in compression between the first and second driving elements. | 10-30-2008 |
| 20090121440 | Dry-running piston rod sealing arrangement, and method for sealing a piston rod using one such arrangement - The invention relates to a dry-running piston rod sealing arrangement ( | 05-14-2009 |
| 20100090409 | Packing Assembly for Reciprocating Pumps - A packing assembly adapted to be mounted on and seal a reciprocating shaft includes a packing nut, an elastomeric sealing member releasably coupled to the packing nut, and a keeper to facilitate the releasable coupling between the elastomeric sealing member and the packing nut, wherein the entire assembly is removable from the reciprocating shaft as a unit. | 04-15-2010 |
| 20120007314 | FULL BORE COMPRESSION SEALING METHOD - An annular seal, in certain embodiments, includes a top seal section, a bottom seal section, and a core seal section including non-orthogonal top and bottom faces relative to a radial axis of the core seal section disposed between the top seal section and the bottom seal section. The core seal section is configured to expand radially when an axial load is applied to the top and bottom faces of the core seal section such that the top and bottom faces are deformed into an orthogonal alignment relative to the radial axis of the core seal section. | 01-12-2012 |
| 20130087975 | Sealing Device In A Polymer Filtration Device - A sealing device for sealing a slide plate in a polymer filtration apparatus where the slide plate is translatable across an extrusion bore extending through a housing of the polymer filtration apparatus. A spring device can be positioned around the outer periphery surfaces of the seal for axially biasing the sealing surface of the seal against the slide plate with a preload bias. Increasing pressure of polymer in the extrusion bore can enter a region in the seal cavity upstream of the thrust surface of the seal and can provide polymer pressure in the axial direction for exerting axial force against the thrust surface of the seal for causing the sealing surface to be further biased against the slide plate. | 04-11-2013 |
| 20140084546 | METHODS AND APPARATUSES FOR PRODUCING A COMPRESSION PACKING SEAL INCLUDING A DUAL-SIDED BRAIDED JACKET AND METHODS OF USING THE SAME - The present application pertains to a compression packing seal including a braided dual-sided jacket, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The compression packing seal is made up of a core and a jacket braided round the core. The jacket may include two or more different materials that are braided together in such a way that, in cross-section, the jacket has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the jacket. Accordingly, when viewed in a cross-sectional plane, the jacket may expose substantially only a first material along a first side, and substantially only a second material along a second side. | 03-27-2014 |
| 20140291937 | LOADING MECHANISM FOR FLUID SEALS - A loading mechanism for a fluid seal that allows an installer to change or adjust the axial bias applied to a stacked set of sealing elements. The loading mechanism includes a bolt-like adjusting element that has a foot portion attached to one end and a rail element that is threadingly coupled at an opposite end. By rotating the adjusting element, the rail element can travel axially along the adjusting element. The axial displacement of the rail element allows the installer to select the amount of axial force or bias applied by the loading mechanism to the sealing elements. | 10-02-2014 |
| 20150061226 | ANTI-EXTRUSION CONE PACKING - An improved shaft assembly with a rigid component for facilitating sealing is disclosed. The shaft assembly includes a housing, a cap connected to the housing, a shaft operably positioned in the housing, first and second sealing elements, and the rigid component fixedly attached to the first sealing component. The first and second sealing components are in contact with the housing and the shaft. The rigid component is in contact with the first sealing component and the cap, so as to prevent the first sealing component from extruding outside the cap when the shaft reciprocally moves relative to the housing. | 03-05-2015 |
