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  Pump structure easily and quickly connectable with an air cushion or a bladderUSPTO Application #: 20070071623Title: Pump structure easily and quickly connectable with an air cushion or a bladder Abstract: A pump structure easily and quickly connectable with an air cushion or a bladder. The pump structure includes a flexible main body defining a cavity. The main body is compressible and decompressible to reciprocally contract and expand the cavity for pumping a fluid. A one-way valve is mounted on a wall of the cavity, permitting external fluid to one-way flow into the cavity. A check valve and an output tube are connected with the main body. A conduit with a deflation valve is disposed on the flexible main body and communicates with the output tube to form a deflation passage. The output tube is selectively easily connectable with an air cushion or a bladder, whereby the fluid can be pumped from the cavity through the output tube into the air cushion or the bladder. (end of abstract)
Agent: Bruce H. Troxell - Falls Church, VA, US Inventor: Chi-Yuan Chang USPTO Applicaton #: 20070071623 - Class: 417480000 (USPTO) Related Patent Categories: Pumps, Expansible Chamber Type, Valve In Collapsible Wall Pumping Member The Patent Description & Claims data below is from USPTO Patent Application 20070071623. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] The present invention is related to a pump structure easily and quickly connectable with an air cushion or a bladder. The pump structure includes a flexible main body defining a cavity. The main body is compressible and decompressible to reciprocally contract and expand the cavity for pumping a fluid through an output tube into an air cushion or a bladder. [0002] A pump is used to pump fluid (gas or liquid) into a cushion or an envelope to form an elastic article such as inflatable mattress, inflatable pillow, inflatable toy, cushion pad, etc. When not used, these inflatable articles can be deflated and stored. Taiwanese Patent Application No. 91213606 discloses an inflatable cushion. An inflation bladder is disposed on one side of the inflatable cushion. The inflation bladder includes a sponge layer and a one-way valve. Another one-way valve is arranged on one side of the inflation bladder and fitted in a column hole of a fixing block. The one-way valve has a ventilation duct. The other end of the one-way valve is positioned inside the inflatable cushion. Taiwanese Patent Application No. 87212021 discloses an inflatable cushion including a main body enclosed by a sponge layer. The sponge layer has a movable layer with a fixed end and an open end. When the nozzle is opened to inflate the cushion, the movable layer will form another space due to difference between expansion coefficients. [0003] U.S. Pat. No. 5,144,708, entitled "check valve for fluid bladders" discloses a measure for assembling the bladder with the inflation pump. The bladder is composed of an upper sheet and a lower sheet which form a fluid passage between two chambers. The check valve has two layers of plastic membranes with the same length. The plastic membranes are disposed in the fluid passage in opposite to inner faces of the upper and lower sheets. The inner surfaces of the plastic membranes have shield materials. When the plastic membranes are thermally bonded with each other, a space is defined through which the check valve can extend between the upper and lower sheets of the bladder. The two plastic membranes also define a duct permitting the fluid to one-way flow from one chamber of the bladder to the other chamber. [0004] Taiwanese Patent Application No. 91210460 discloses an air cushion with inbuilt pump. The air cushion includes a cushion main body and an inflation pump disposed in the cushion main body. The cushion main body has an air collection chamber with pressed and sealed periphery. The inflation pump has a pump cavity and an inflation/deflation passage. Two one-way flat membrane tubes are disposed on the edge of the pump cavity. One of the membrane tubes serves as an air passage for the pump cavity and the air collection chamber. One end of the other membrane tube communicates with the pump cavity, while the other end of the other membrane tube is pivotally connected with a circular tube with an exhaust port. One end of the circular tube is connected with the air collection chamber to form an inflation passage. A hollow bolt is inserted into the circuit tube or extracted out of the circular tube to control the opening/closing of the exhaust port of the circular tube. By means of pressing the inflation pump, the inflation amount can be adjusted. [0005] In the above conventional techniques, the pump system is fixedly mounted in a specific inflatable cushion/bladder or on the periphery thereof. In other Words, the pump system can be only applied to the specific inflatable cushion or bladder assembled with the pump system. Such pump system cannot be used to inflate other cushion or bladder. Therefore, it is tried by the applicant to provide a pump system with simplified structure which can be selectively easily and quickly connected with other air cushion or bladder. The pump structure can be easily carried and operated. SUMMARY OF THE INVENTION [0006] It is therefore a primary object of the present invention to provide a pump structure easily and quickly connectable with an air cushion or a bladder. The pump structure includes a flexible main body defining a cavity. The main body is compressible and decompressible to reciprocally contract and expand the cavity for pumping a fluid. A one-way valve is mounted on a wall of the cavity, permitting external fluid to one-way flow into the cavity. A check valve and an output tube are connected with the main body. A conduit with a deflation valve is disposed on the flexible main body and communicates with the output tube to form a deflation passage. The output tube is selectively easily connectable with an air cushion or a bladder, whereby the fluid can be pumped from the cavity through the output tube into the air cushion or the bladder. [0007] It is a further object of the present invention to provide the above pump structure in which the one-way valve includes at least one displaceable valve petal. The valve petal is responsive of the contraction or expansion of the cavity to move between an opened position and a closed position. [0008] It is still a further object of the present invention to provide the above pump structure in which the output tube has two ends. One end of the output tube communicates with the check valve. The other end of the output tube is equipped with a connector which is selectively quickly connectable with an air cushion or a bladder. [0009] The present invention can be best understood through the following description and accompanying drawings wherein: BRIEF DESCRIPTION OF THE DRAWINGS [0010] FIG. 1 is a perspective view of the present invention; [0011] FIG. 2 is a bottom view of the present invention; [0012] FIG. 3 shows that the present invention is connected to an air cushion or bladder; [0013] FIG. 4 is a sectional view according to FIG. 1, showing the operation of the present invention; [0014] FIG. 5 is an enlarged view of the check valve, output tube and conduit of the present invention; [0015] FIG. 5-1 is a sectional view taken along line A-A of FIG. 3, showing the operation of the deflation valve of the present invention; [0016] FIG. 6 is a sectional view according to FIG. 4, showing another state of the present invention; [0017] FIG. 7 is a sectional view of the one-way valve of the present invention, showing the operation thereof; [0018] FIG. 8 is a sectional view of another embodiment of the present invention; and [0019] FIG. 9 is an enlarged view of the check valve of the other embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0020] Please refer to FIGS. 1, 2 and 3. According to a preferred embodiment of the present invention, the pump structure 10 easily and quickly connectable with an air cushion or a bladder includes a flexible main body 11 defining a cavity 12. The main body 11 is compressible and decompressible to reciprocally contract and expand the cavity 12 for pumping a fluid. A one-way valve 13 is mounted on a bottom of the cavity 12 as shown in FIG. 2. The one-way valve 13 includes at least one displaceable valve petal 14 (as shown in FIGS. 4 and 6). The valve petal 14 is responsive of the contraction or expansion of the cavity 12 to move between an opened position and a closed position. The one-way valve 13 only permits the fluid to one-way flow into the cavity 12, while preventing the fluid from escaping out through the valve petal 14. (This will be further described hereinafter.) Continue reading... Full patent description for Pump structure easily and quickly connectable with an air cushion or a bladder Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Pump structure easily and quickly connectable with an air cushion or a bladder 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 Pump structure easily and quickly connectable with an air cushion or a bladder or other areas of interest. ### Previous Patent Application: Plunger driving structure Next Patent Application: Hurricane emergency pump Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the Pump structure easily and quickly connectable with an air cushion or a bladder patent info. 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