| Rechargeable ac/dc pump -> Monitor Keywords |
|
|
 
Rechargeable ac/dc pumpRelated Patent Categories: Pumps, ProcessesRechargeable ac/dc pump description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070077153, Rechargeable ac/dc pump. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Technical Field [0002] This application relates to pumps, and more particularly to a portable pump that may be controlled by multiple power sources. [0003] 2. Related Art [0004] Portable pumps may be used to inflate objects. Some pumps may be powered by rechargeable batteries. After the batteries discharge, the pump may be connected to an external power source to recharge the batteries. The charging period may last for an extended period of time, during which the pump is inoperable. [0005] Some pumps resolve this problem by providing a connection to an external power source that recharges the batteries in a shorter time period. While these pumps reduce charging time, the pump remains inoperable during the recharging period. [0006] Therefore, there is a need for a portable pump that operates during a recharging process. SUMMARY [0007] A pump uses a power source to deliver power to a second power source while driving a fluid displacement device. The pump includes a fluid displacement device and a circuit coupled to a first power source and a second power source. The first power source may draw a first current from the second power source. The second power source supplies power to the fluid displacement device. [0008] An alternate pump includes a fluid displacement device and a circuit coupled to a first or a second power source while coupled to a third power source. The first or second power source provides a charging current to the third power source while delivering current to the fluid displacement device. [0009] Other systems, methods, features and advantages of the invention will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0010] The invention can be better understood with reference to the following drawings and description. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. Moreover, in the figures, like referenced numerals designate corresponding parts throughout the different views. [0011] FIG. 1 is a perspective view of an inflatable object. [0012] FIG. 2 is a partial block diagram of a pump coupled to a power source. [0013] FIG. 3 is an exploded view of a pump. [0014] FIG. 4 is a partial schematic of circuitry interfacing the pump. [0015] FIG. 5 is an alternative schematic of alternative circuitry interfacing the pump. [0016] FIG. 6 is a flow diagram of logic that may control the pump. DETAILED DESCRIPTION [0017] A pump may fill inflatable objects with air or gas. The pump, which may include one or more electromechanical pumps, may interface circuits that route a portion of a current to a power source while delivering another portion of the current to a fluid displacement device. By sharing current with the fluid displacement device, the pump may compress or transfer fluids during a recharging process. [0018] FIG. 1 is a perspective view of an inflatable object 100. The inflatable object 100 may comprise an inflatable mattress 102. Any inflatable object may be used, including objects and devices designed to be filled with air, gas, or fluids before use. The inflatable mattress 102 may include a top wall 104, a bottom wall 103, and a side gusset 106. A portable pump may be coupled to the inflatable mattress 102 at a valve 108 to receive a fluid or gas. [0019] FIG. 2 is a diagram of a pump 200 coupled to charging circuitry. The pump 200 may interface a circuit 202 that includes a first power source 204 in series or parallel with a second power source 206. The pump 200 may also include modules that displace a fluid 208, (e.g., a continuous substance such as air) from one chamber to another. Alternatively, modules that convert electrical energy into mechanical energy may be used. [0020] An exemplary pump 200 may comprise a motor that has a metal frame, an armature, a commutator, and brushes. A magnetic device may be mounted on an interior surface of the frame that generates a natural or induced attraction. The armature may comprise one or more ferromagnetic cores wrapped in a coil that produces a magnetic field when current passes through it. Armature coils may be electrically coupled to a power source and mechanically coupled to a shaft. A commutator may be coupled to the shaft. The commutator may vary the poles of the armature as the armature rotates. As a current passes through the armature coils, the attraction of opposite poles and repulsion of like poles between the armature and the magnetic device (such as one or more field magnets) may create a torque that rotates the armature. Continue reading about Rechargeable ac/dc pump... Full patent description for Rechargeable ac/dc pump Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Rechargeable ac/dc 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 Rechargeable ac/dc pump or other areas of interest. ### Previous Patent Application: Aliquot correction for feeding set degradation Next Patent Application: Pump enclosure Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Rechargeable ac/dc pump patent info. IP-related news and info Results in 0.13474 seconds Other interesting Feshpatents.com categories: Computers: Graphics , I/O , Processors , Dyn. Storage , Static Storage , Printers 174 |
 * Protect your Inventions * US Patent Office filing 
PATENT INFO |
|
