| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 418152000 | NON-METALLIC WORKING MEMBER, CYLINDER OR PARTITION | 12 |
| 20080292486 | Rotary Blower With Corrosion-Resistant Abradable Coating - A rotary blower rotor includes a rotor body having a corrosion-resistant coating covering the rotor body. An abradable coating covers at least a portion of the corrosion-resistant coating for providing an essentially zero operating clearance for increasing a volumetric efficiency of the rotary blower. A rotary blower including a rotor with a corrosion-resistant coating is also provided. | 11-27-2008 |
| 20090104063 | ROTOR FOR A VANE PUMP, MADE OF PLASTIC MATERIAL REINFORCED BY METALLIC FOIL | 04-23-2009 |
| 20090208357 | Rotary gear pump for use with non-lubricating fluids - An improved external rotary gear pump for use with non-lubricating fluids such as amine is disclosed. The device uses specially coated internal parts chosen to reduce friction and improve wear characteristics so that the resulting pump will operate for a minimum warranty period of one year. | 08-20-2009 |
| 20100080723 | OVERMOLDED ROTOR - A fluid device includes a housing and a rotor assembly disposed in the housing. The rotor assembly includes a core and a coating. The core has a first surface, an oppositely disposed second surface and an outer peripheral surface that extends between the first and second surfaces. The core defines a bore that extends through the first and second surfaces. The coating coats at least a portion of the core. The coating is a water-swellable plastic material. | 04-01-2010 |
| 20120034124 | COMPRESSOR AND KIT REPAIRING AND INFLATING INFLATABLE ARTICLES - A non-lubricated, rotary vane compressor of maximum 10-70 litres/minute capacity, and having a pump body defining a cavity; a rotor having a cylindrical body housed in the cavity; a number of vanes; an inlet and outlet connected to the cavity; and a non-return valve fitted to the outlet. | 02-09-2012 |
| 20140099226 | SIMPLIFIED ROOTS-TYPE BLOWER - The present disclosure relates to a simplified roots-type blower having an improved sound signature. The roots-type blower includes a rotor bore housing having a molded, one-piece polymeric construction. The rotor bore housing defines a first rotor bore and a second rotor bore. The rotor bore housing also defines a first bearing pocket corresponding to the first rotor bore and a bearing pocket corresponding to the second rotor bore axis. The rotor bore housing further defining a timing gear chamber. | 04-10-2014 |
| 20140294645 | ROTARY ELEMENT AND ROTARY DISPLACEMENT DEVICE COMPRISED THEREOF - This disclosure describes new construction for rotary elements that find use in rotary displacement devices, e.g., positive displacement pumps and meters. The proposed construction may incorporate fibers, e.g., carbon fibers, disposed in a resin matrix. This construction can reduce the need to perform secondary processes that are necessary to utilize many rotary elements of conventional design. Moreover, examples of the rotary elements can improve operation of the displacement devices, e.g., by reducing resonance and allowing the displacement device to operate at increased speed. | 10-02-2014 |
| 20150017047 | Stators For Downhole Motors, Methods For Fabricating The Same, And Downhole Motors Incorporating The Same - The present invention recites a method of fabricating a stator for a downhole motor, the method comprising the steps of providing a stator tube having an interior surface and applying a bonding agent to the interior surface of the stator tube. Additionally, a mandrel is positioned within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator. Furthermore, a reinforcing material is introduced into the stator tube to fill space between the mandrel and the interior surface of the stator tube and subsequently solidified to bond the reinforcing material to the interior surface of the stator tube. The mandrel is then removed from the bonded stator tube and reinforcing material such that a stator is fabricated. | 01-15-2015 |
| 418153000 | Resilient | 4 |
| 20090142212 | Rotary blower with noise abatement jacket enclosure - A rotary blower with noise abatement jacket enclosure having multiple interconnected and synchronized parallel multi-lobe rotors with the same number of lobes for propelling flow from a suction port to a discharge port of an inner casing without internal compression. The noise abatement jacket enclosure is shaped to surround the blower and to conform generally to its body contours, but is oversized to provide adequate cooling spaces with outer skin of the blower. It comprises a forced air cooling jacket comprising an inner and outer cover, a sound absorbent layer comprising an inner and outer surface, the inner surface in contact with the blower outer cooling cover, and a sound barrier layer comprising an inner surface in contact with the outer surface of the sound absorbent layer. | 06-04-2009 |
| 20110052438 | LOW-PRESSURE PUMP - The invention relates to a low pressure pump/vacuum pump for gaseous media, comprising two interacting combs the teeth of which are configured as cycloidal components, the duplicate compressor stages being interconnected. A power unit of the pumps/compressors is driven and the power unit of the other pump/compressor, which is arranged coaxially, is entrained via a rotational connection. | 03-03-2011 |
| 20140308149 | Long Reach Spindle Drive Systems and Method | 10-16-2014 |
| 20150056092 | Self-Fixing Stator Housing - A stator casing of an eccentric screw pump with an elastomer stator inner part including a plurality of shell-like casing segments and a production method for such a stator casing, with which the outlay for maintenance work can be reduced. According to the invention, casing segments adjacent in the longitudinal direction of the stator casing are disposed offset with respect to one another around the longitudinal axis of the stator casing, wherein each casing segment includes connection means and at least four casing segments engage with one another and form a composite. For the production of the stator casing, the casing segments are acted upon by an axial force component as a result of clamping, wherein the casing segments engage with one another, as a result of which a radial force component is generated and the composite is formed. | 02-26-2015 |
