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<title>freepatentsonline.com: Pumps</title>
<link>http://www.freepatentsonline.com/result.html?query_txt=ccl/417%20and%20isd/04/29/2008&amp;uspat=on</link>
<description>USPTO Class 417 Pumps</description>
<language>en-us</language>
<lastBuildDate>Wed Apr 30 16:35:28 EDT 2008</lastBuildDate>

<item>
<title><![CDATA[Pressure storage structure for use in air]]></title>
<link>http://www.freepatentsonline.com/7364410.html</link>
<description><![CDATA[A pressure storage structure for use in air is disclosed. The structure has a main body characterized in that the main body has been secured and the main body includes a plurality of air chambers, each chamber has an open end, and the chamber contains a piston, an elastic member, a unidirection air outlet, a unidirection valve for inlet air and a unidirection inlet, a unidirection valve for outlet air, the piston is provided with a protruded section protruded from the open end out of the air chamber, the structure includes a wind mill positioned to the main body and the wind mill has a rotating shaft pivotally connected to the main body and the rotating shaft is provided with a plurality of blades and rollers, such that the rollers and the protruded sections are in contact and the unidirection outlet of each air chamber is connected to a storage cylinder, the storage cylinder is provided with a pressure plug, an elastic member, an air inlet, a single direction inlet valve and a gas outlet, a unidirectional valve for outlet air, such that when the blades are rotated by the rotating shaft driven by wind the rollers pass over the protruded sections so that the plug moves inward and the gas is delivered to the storage cylinder.]]></description>
<pubDate>April 29, 2008</pubDate>
</item>

<item>
<title><![CDATA[System, method, and apparatus for valve stop assembly in a reciprocating pump]]></title>
<link>http://www.freepatentsonline.com/7364412.html</link>
<description><![CDATA[A reciprocating pump assembly has a pump housing with a crankshaft. A plunger is connected to the crankshaft for pumping a fluid through a cylinder. The cylinder has a fluid inlet port and an opening that provides access to the cylinder. A suction cover is mounted in the opening and has a hub that is coaxial with an axis of the suction cover. A suction valve stop is mounted adjacent one of the fluid ports and has a spring retainer. A column extends from the spring retainer, and a bushing is mounted to the spring retainer for engaging and being retained by the hub of the suction cover. The suction cover guides the suction valve stop in operation and, when the suction cover is removed from the opening, the suction valve stop is removable.]]></description>
<pubDate>April 29, 2008</pubDate>
</item>

<item>
<title><![CDATA[Crank case shut off valve]]></title>
<link>http://www.freepatentsonline.com/7364408.html</link>
<description><![CDATA[The invention provides a compressor with a shut off valve disposed between the crank case and the suction cavity. The valve is moveable between an open and closed position in response to the pressure in the discharge cavity of the compressor. The valve is an on/off valve and is operable rapidly depressurize the interior of the crank case when the compressor transitions from a minimum stroke. The valve can define first and second fluid pathways. The first fluid pathway can be larger than the second fluid pathway and be selectively opened and closed. The second fluid pathway can be permanently open and act as a bleed between the crank case and the suction cavity.]]></description>
<pubDate>April 29, 2008</pubDate>
</item>

<item>
<title><![CDATA[Fluid pump system]]></title>
<link>http://www.freepatentsonline.com/7364414.html</link>
<description><![CDATA[A fluid pump system has a cover, a fluid pump and a conduit. An inside of the cover is divided into a main chamber and a sub chamber. The fluid pump is accommodated in the main chamber. The conduit extends from the fluid pump to an outside of the cover through the sub chamber.]]></description>
<pubDate>April 29, 2008</pubDate>
</item>

<item>
<title><![CDATA[Piston assembly for rotary hydraulic machines]]></title>
<link>http://www.freepatentsonline.com/7364409.html</link>
<description><![CDATA[A piston assembly for a hydraulic machine is formed with a part spherical cavity in the piston to receive a spherical bearing of a slipper assembly. The spherical bearing is secured in the cavity by swaging the walls of the piston and subsequently working the wall to provide a clearance to allow relative rotation.]]></description>
<pubDate>April 29, 2008</pubDate>
</item>

<item>
<title><![CDATA[Fan impeller and fan motor]]></title>
<link>http://www.freepatentsonline.com/7364411.html</link>
<description><![CDATA[Small, high-performance centrifugal fan for cooling portable electronic devices. The centrifugal fan motor employs a cantilever-type impeller constituted by an impeller blade unit that includes a lower endwall portion at axial one end, having a wall surface for breaking the flow of air along the rotational axis, and an opening at the other axial end. The impeller is configured so that the radius r to the outer circumference of the impeller blade unit is smaller than the axial height h of the impeller. When an airflow that enters through the impeller opening is forced out towards outer periphery of the impeller blade unit, windage loss at the wall surface of the lower endwall portion of the impeller is reduced, which realizes high-efficiency cooling performance that complements motor performance.]]></description>
<pubDate>April 29, 2008</pubDate>
</item>

<item>
<title><![CDATA[Scroll type compressor with an enhanced sealing arrangement]]></title>
<link>http://www.freepatentsonline.com/7364416.html</link>
<description><![CDATA[A scroll type compressor with an enhanced sealing arrangement includes two sealing rings, mounted one between a first part of a gliding block and a first chamber of a fixed scroll and another one between a second part of the gliding block and a second chamber of the fixed scroll, respectively. The sealing ring has a U-shape cross section characterized in having a center depth smaller than half of a total height of the cross section. By providing such sealing rings, damage in mounting the sealing rings can be reduced to a minimum, possible leakage from the damage can be avoided, the assembly process in producing the compressor can be improved, and the compressor can be successfully merchandized.]]></description>
<pubDate>April 29, 2008</pubDate>
</item>

<item>
<title><![CDATA[Lubricating system for a fan]]></title>
<link>http://www.freepatentsonline.com/7364403.html</link>
<description><![CDATA[A lubricating system for a fan ( 10 ) includes a lubricant storage space ( 17 ) formed at an end portion of the fan for receiving lubricant therein. A lubricant temporary retaining space ( 145 ) is defined at the other end portion of the fan for temporarily retaining the lubricant therein. A lubricant returning space ( 125 ) communicates the lubricant storage space with the lubricant temporary retaining space for enabling the lubricant to flow from the retaining space to the storage space. The returning space is defined in a tube ( 12 ) made of plastic, wherein a bearing ( 13 ) is mounted in the tube and a stator ( 15 ) is mounted around the tube.]]></description>
<pubDate>April 29, 2008</pubDate>
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