| Pumping system employing a variable-displacement vane pump -> Monitor Keywords |
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Pumping system employing a variable-displacement vane pumpPumping system employing a variable-displacement vane pump description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080038117, Pumping system employing a variable-displacement vane pump. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001]The present invention relates to a variable-displacement vane pump comprising a main body having a cavity, in which is movable a ring containing a rotor rotating about a fixed axis. The rotor has a number of vanes, one end of each of which rests on the inner surface of the ring during rotation. [0002]Means are also provided which, depending on a control pressure, move the ring between a centred position with respect to the rotation axis of the rotor, in which no pumping action takes place, and a predetermined eccentric position with respect to the rotation axis of the rotor. BACKGROUND ART [0003]Vane pumps of the above type are currently used to pump various fluids, such as oil in an internal combustion engine. [0004]As is known, in pumps of the above type, at high rotation speeds of the shaft connected to the rotor, the gaps between adjacent vanes on the pump fail to fill completely, thus resulting in forces impairing operation of the pump. [0005]To counteract the increase in such forces, counteracting springs are traditionally used, but are extremely rigid and therefore do not deform easily. DISCLOSURE OF INVENTION [0006]It is therefore an object of the present invention to provide for hydraulic control of a variable-delivery vane pump, particularly at high speed. [0007]According to the present invention, there is provided a pumping system employing a variable-displacement vane pump, as claimed in claim 1. BRIEF DESCRIPTION OF THE DRAWINGS [0008]A number of non-limiting embodiments of the present invention will be described by way of example with reference to the accompanying drawings, in which: [0009]FIG. 1 shows a first embodiment of the present invention; [0010]FIG. 2 shows a first configuration of a second embodiment; [0011]FIG. 3 shows a second configuration of the second embodiment in FIG. 2; [0012]FIG. 4 shows a first configuration of a detail of the second embodiment in FIGS. 2 and 3; [0013]FIG. 5 shows a second configuration of the FIG. 4 detail; [0014]FIG. 6 shows a third embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION [0015]Number 10 in FIG. 1 indicates a variable-delivery vane pump forming part of a pumping system 100 in accordance with the present invention. [0016]Pump 10 comprises, in known manner, a main body 11 having a cavity 12 in which a ring 13 translates as described in detail later on. [0017]Ring 13 houses a rotor 14 having a number of vanes 15, which move radially inside respective radial slits 16 formed in rotor 14, which is rotated in the direction indicated by arrow W (see below). [0018]Main body 11 is closed by a cover not shown in the drawings. [0019]In known manner, rotor 14 houses a shaft 17 connected mechanically to rotor 14; and a floating ring 18 surrounding shaft 17, and on which the other ends of vanes 15 rest. Continue reading about Pumping system employing a variable-displacement vane pump... Full patent description for Pumping system employing a variable-displacement vane pump Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Pumping system employing a variable-displacement vane pump patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Pumping system employing a variable-displacement vane pump or other areas of interest. ### Previous Patent Application: Turbine blade tip shroud Next Patent Application: Bicycle pump Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Pumping system employing a variable-displacement vane pump patent info. IP-related news and info Results in 0.08813 seconds Other interesting Feshpatents.com categories: Software: Finance , AI , Databases , Development , Document , Navigation , Error 174 |
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