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| Number | Title | Issue Date |
| 7950909 | Pump structure connectable with an air cushion or a bladder A pump structure connectable with an aircushion or a bladder. The pump structure includes: a flexible main body defining a valve room in which a relief valve is arranged and a compressible chamber; a one-way valve permitting the fluid to one-way flow into the chambe... | 05/31/2011 |
| 7377756 | Rapid exhausting mechanism in pump unit A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. A motor actuates the diaphragm to introduce air to the air chamber. An exhaust valve exhausts air in the pump chamber to lower a pressur... | 05/27/2008 |
| 7322803 | Pumps with diaphragms bonded as bellows A pump comprises a diaphragm assembly which includes a first diaphragm (22) having a first diaphragm edge (28) and a second diaphragm (24) having a second diaphragm edge (30). The first diaphragm edge (28) and the second diaphragm ... | 01/29/2008 |
| 7284962 | Micropump This invention provides a fluid pump using perforate elements and closure elements which are alternately displace and relates particularly but not exclusively to miniature fluid pumps and pumps suitable for delivery of liquid pharmaceutical formulations. In the art ... | 10/23/2007 |
| 7278445 | Shoe having an inflatable bladder An article of footwear including a sole and an upper with an exterior and interior surface, and one or more bladders which comprises at least one of the exterior or interior surfaces of the upper. The article of footwear also includes a inflation mechanism located u... | 10/09/2007 |
| 7261525 | Outlet check valve for fluid bladders A manually operated pump having a pump assembly and a check valve. The pump assembly includes a dome with a fluid inlet. A support plate is sealed to the dome to define a fluid chamber. The support plate includes a fluid outlet. A foam material is positioned in the ... | 08/28/2007 |
| 7219021 | Multiple wireless sensors for dialysis application A sensor system for dialysis applications includes a plurality of pressure sensors, wherein each pressure sensor can be provided as an LC type sensor, and/or an RLC type sensor. Each sensor among the plurality of pressure sensors can be inductively coupled with a re... | 05/15/2007 |
| 7197949 | Meso sniffer: a device and method for active gas sampling using alternating flow A sampling system for detecting an analyte, comprising a diaphragm pump, a buffer chamber, a sensor head and intake port. The pump includes a chamber for receiving fluids via first and second ports. A buffer chamber is located at the second port for holding a quanti... | 04/03/2007 |
| 7181975 | Wireless capacitance pressure sensor A wireless pressure sensor system has a pressure sensing capacitor and an inductor mounted on a common housing. The pressure sensing capacitor has a conductive diaphragm, a dielectric layer and a fixed electrode separated at least in part from the diaphragm by a gap... | 02/27/2007 |
| 7131953 | CPR assist device adapted for anterior/posterior compressions A resuscitation device for automatic compression of a victim's chest using a compression belt operably attached to a platform upon which a patient rests. In use, the compression belt is wrapped around the patient and at least one spindle operably attached to the pla... | 11/07/2006 |
| 7100453 | Modified dual diaphragm pressure sensor A device for sensing pressure using two flexible diaphragms in which an additional element is added to promote rolling contact of the diaphragm. One embodiment aligns the flexible diaphragms in a non-parallel alignment such that deflection of one flexible diaphragm ... | 09/05/2006 |
| 7096871 | Surgical drape having a fluid collection pouch with an inflatable rim According to one embodiment of the invention, an apparatus used for collecting fluids during a medical procedure includes a fluid collection pouch having an open end, an inflatable bladder substantially surrounding a perimeter of the open end, and a pump coupled to ... | 08/29/2006 |
| 6991213 | Dual diaphragm valve A valve for regulating the flow of fluids (gas or liquid) using two flexible diaphragms in which an additional element is added to promote rolling contact between the diaphragms. The valve operates in a normally open configuration where fluid flows into the valve, p... | 01/31/2006 |
| 6939314 | CPR compression device and method Improved automatic chest compression systems which use constricting belts, repeatedly inflating bladders, or reciprocating pistons to compress the chest. A bladder is placed between the chest and the particular mechanism used to compress the chest during CPR. The bl... | 09/06/2005 |
| 6939315 | CPR chest compression device A resuscitation device for automatic compression of a victim's chest using a compression belt which exerts force evenly over the entire thoracic cavity. The belt is constricted and relaxed through a motorized spool assembly that repeatedly tightens the belt and rela... | 09/06/2005 |
| 6939618 | Structural elements Various application are provided for an enclosure having a first wall and two or more second walls surrounding a cavity. The enclosure also has an inlet and outlet each in fluid communication with the cavity. The second walls each have at least a portion shaped such... | 09/06/2005 |
| 6685444 | Fluid discharging device with a reciprocating pump member defining an outlet valve, and a valve member defining an outlet and suction valve A fluid discharging device is provided with diaphragm members 20 and 30. The diaphragm member 30 being a valve member comprises an outlet 35 and a suction passage opening and closing portion 33, and can be moved forward and backward relative to the diaphr... | 02/03/2004 |
| 6575715 | Structural elements forming a pump Various application are provided for an enclosure having a first wall and two or more second walls surrounding a cavity. The enclosure also has an inlet and outlet each in fluid communication with the cavity. The second walls each have at least a portion ... | 06/10/2003 |
| 6179586 | Dual diaphragm, single chamber mesopump A diaphragm pump, which is preferably electrostatically actuated, but which may be activated by other forces such as electromagnetic or piezoelectric actuation. The pump is formed by a pump body having a pump chamber formed therein. First and second diaph... | 01/30/2001 |
| 6168056 | Device for inflating/deflating the shoulder straps of a means intended to be worn on the back by a person A device for inflating and deflating the shoulder strap of a satchel that includes an inflatable cushion located inside the strap that is connected to an inflation/deflation mechanism formed of a resilient deformable material including a bulb-like pump an... | 01/02/2001 |
| 6120264 | Air pump of simple structure An air pump includes a first sheet, a second sheet, an inflation valve and a check valve. The second sheet is directly connected to the first sheet so as to form a chamber. The inflation valve is provided on the chamber to lead air into the chamber when t... | 09/19/2000 |
| 6092695 | Interchangeable liquid dispensing cartridge pump A liquid dispensing cartridge pump suitable for dispensing reagent in an automatic system includes a compressible metering chamber suspended from a reservoir bag mounted within a rigid housing. Check valves between the reservoir and metering chamber and a... | 07/25/2000 |
| 6004116 | Air pump for an inflatable body having a safety holding device An automatic air pump is built into an inflatable body. The automatic air pump includes a pump body, an air inlet and an air outlet. The pump body is automatically restorable and has an air chamber inside. The air outlet is provided on the pump body to in... | 12/21/1999 |
| 5934888 | Aspirator pump An aspirator pump, especially for medical purposes, has a receptacle with two chambers arranged alongside each other, which are connected with a suction tube, and on each of which an element is arranged which is movable approximately parallel to the other... | 08/10/1999 |
| 5931648 | Vacuum actuated tubular blood pumping device with active values and application of the same A blood pump having a rigid chamber with a central opening is connected to a vacuum source such that the vacuum source applies a vacuum on an elastic tubular membrane through the opening in the rigid chamber. The blood supply to the chamber is controlled ... | 08/03/1999 |
| 5704772 | Controller less resilient bladder pump for reduced diameter casing with long cycle A conventional vibrator for actuating small diameter pump is tapped at the small volume pressure chamber and communicated to a plugged, elongate hose, thus expanding the actuating pressure chamber of the vibrator conveniently to virtually any required vol... | 01/06/1998 |
| 5564143 | Check valve for fluid bladders A check valve provides a one-way fluid passage from without to within a fluid bladder formed by a pair of plastic sheets sealed together about their periphery. The check valve is formed by a pair of superimposed films of thermoplastic material, generally ... | 10/15/1996 |
| 5558395 | Inflatable cushion devices for bicycle seats and other sporting goods An inflatable air cushion has an integrally formed extension tube of zig-zag form with its free end attached to another cushion or to a pump assembly for inflating the cushion. By separating the limbs of the zig-zag tube, the cushions, or the cushion and ... | 09/24/1996 |
| 5556258 | Squeezebulb operated sports ball pump A flexible, highly portable pump is designed for volleyball players but has wider applications. Motive force is delivered from a squeezebulb having a check valve at each end and communicating downstream to a fitting which will accept a ball inflation need... | 09/17/1996 |
| 5527164 | Positive-displacement pump with inlet float chamber A fluid valve device for on-off control of fluid flow through a passage extending between two fluid ports (12, 15) and including a valve seat (17A) comprises a hollow valve member (21) which is movable into and out of sealing engagement with the valve sea... | 06/18/1996 |
| 5518377 | Vertical metering pump having piston biasing elastomeric gasket A miniature metering pump of the type possessing a body provided with an inlet opening out into a metering chamber, associated with an inlet valve having a valve member, and with a piston having a plunger provided with an axial nozzle and flared at its bo... | 05/21/1996 |
| 5480287 | Pumping device, particularly for sports shoes, and method for manufacture thereof Method for manufacturing pumping devices, particularly usable in sports shoes, including the monolithic molding of a body having at least one tubular passage and a first and a second seat for air venting and intake valves. The body furthermore includes at... | 01/02/1996 |
| 5378126 | Diaphragm cassette for solution pumping system A solution pumping system including a disposable pump cassette is disclosed, with the system configured for efficient and accurate preparation of parenteral admixture solutions. The system includes a pump driver having a reciprocable pump plunger and a pl... | 01/03/1995 |
| 5372487 | Inlet check valve for pump mechanism An intake valve for use in a thermoplastic fluid pump for inflatable bladders in which the valve is composed of superposed elastomeric layers and one of which is energy sealed at the center thereof to an inner wall portion of the pump about an inlet openi... | 12/13/1994 |
| 5324267 | Slitted pressure cuff check valve A check valve for disposable pressure infusion systems having an inflation bulb with a single open end includes a valve body with a pair of intake ports and a discharge port. Disposed at such single open end of the inflation bulb, one of the intake ports ... | 06/28/1994 |
| 5257978 | IV safety module An IV safety module (2) is used with a peristaltic type IV pump (5) to prevent the unrestricted flow of IV fluid through an IV line (4) when the door (80) of the IV pump is open. A locking trigger (42) is pivotally mounted to the body. A spring (10) is mo... | 11/02/1993 |
| 5145338 | Low pressure fluid pump A low pressure air pump includes an outer flexible envelope which encloses an articulate frame. When the envelope is manually compressed against a smooth surface, an intake aperture on the bottom side of the envelope is sealed and air is forced out of the... | 09/08/1992 |
| 5144708 | Check valve for fluid bladders A check valve provides a one-way fluid passage from without to within a fluid bladder formed by a pair of plastic sheets sealed together about their periphery. The check valve is formed by a pair of superimposed films of thermoplastic material, generally ... | 09/08/1992 |
| 5074765 | Elastomeric air pump An air pump formed of a resilient elastomeric material bondable about the perimeter of an opening provided in a plastic inflatable bladder, has a self-supporting spherical dome portion and a generally planar base portion. An inlet flapper type valve is in... | 12/24/1991 |
| 4995864 | Dual chamber pumping apparatus A dual chamber pumping apparatus and method for infusing fluids to a patient includes a disk having a fluid inlet and a fluid outlet. Resilient membranes are attached to opposite sides of the disk to establish dual pumping chambers, and a network of one-w... | 02/26/1991 |
