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Matches 351 - 400 out of 3,481

Document Document Title
WO2004031581A3
The present invention is directed to a drug delivery pump apparatus, which comprises: (a) an expandable and contractible enclosure having an interior volume that defines a medication reservoir; (b) one or more electroactive polymer actua...  
WO/2004/044423A1
A compressor/pump head (10; 100; 200) comprises a piston assembly (20; 120; 220) and a chamber-head assembly (30; 130; 230) defining a working chamber (60; 160; 260) between them. The piston assembly is fitted with a first diaphragm (26;...  
WO/2004/038308A1
The present invention relates to an active micro cooler comprising: an evaporator which, directly attached to a heat source, vaporizes refrigerant; a compressor which inhales and compresses vaporized refrigerant gas; a condenser which co...  
WO/2004/031581A2
The present invention is directed to a drug delivery pump apparatus, which comprises: (a) an expandable and contractible enclosure having an interior volume that defines a medication reservoir; (b) one or more electroactive polymer actua...  
WO/2004/020823A1
Disclosed is a hydraulic pump comprising an independent drive unit which is composed of at least two opposite coaxial pump blocks (12, 13) that are fixed to a housing (1). A piston (8) of the first pump block (12) is connected in a fixed...  
WO/2004/005716A1
The invention relates to a pumping device comprising a variable-volume pumping chamber (2) with at least one inlet (3) which is equipped with an intake valve (4) and an outlet (5) which is equipped with a discharge valve (6). According t...  
WO2002058994A9
A vacuum device and method for extraction of a substance from a fluid source the vacuum device including an upper member (20) that may be selectively, and operably, connected to a lower membrane. The upper member (20) defines a bottom op...  
WO2002014695A9
The present invention reveals a method and apparatus for more efficiently injecting a primary fluid flow (10) in a fluid ejector used to pump lower velocity fluid from a secondary source (12). In one embodiment, the primary fluid flow (1...  
WO/2003/085264A1
An electromagnetic vibrating type diaphragm pump comprising an electromagnetic section having an electromagnet disposed within a frame, a vibrator supported within the electromagnetic section and having a magnet, large- and small-diamete...  
WO/2003/078841A1
The invention relates to a pump (1) with an oscillating part, wherein said pump has a housing (2) with a working chamber (3) and a crankcase (4) defined by said chamber by means of the pump part. A pump drive mechanism (6) with a drive s...  
WO/2003/016719A1
A vacuum pump capable of pumping solid, liquid and gas, or any combination thereof, including a drive (40) and a manually disengageable pumping system connected thereto. The pumping system is composed of a two- or three-chambered caniste...  
WO/2003/011365A1
A fluid pressure generating means (10) for a heart assist device having blood pumping means. The pressure generating means (10) includes a housing (11), defining an interior volume (18), and having a substantially rigid first housing por...  
WO/2002/090772A1
A pump (2) is provided with a pump head (8) having a flexible metal diaphragm (24) attached to a rigid compression chamber (36). The flexible diaphragm is mechanically oscillated back and forth by a piston (30) driven by a linear motor (...  
WO/2002/088551A1
The technical field of the invention is that of microactuators designed for mechanical, chemical, electrical or thermal functions in microsystems, for microelectronic applications such as chips, or biomedical applications such as cards i...  
WO/2002/081918A1
The invention relates to an oscillating displacement pump, in particular a diaphragm pump (P) for a liquid or gaseous delivery medium. Said pump has a delivery chamber, which is delimited on one side by a pump head and on the other side ...  
WO/2002/066834A1
An actuator device for force-feeding air, comprising two diaphragms (8, 9) opposed to each other, voice coils (6, 7) installed on the surfaces of the diaphragms (8, 9), a magnet (2) formed integrally with pole pieces (3, 4), a yoke (5) o...  
WO/2002/058994A1
A vacuum device and method for extraction of a substance from a fluid source the vacuum device including an upper member (20) that may be selectively, and operably, connected to a lower membrane. The upper member (20) defines a bottom op...  
WO2002033256A3
Disclosed herein is a wobble diaphragm pump having a housing with an open neck. A wobble piston can be passed through the open neck and fit onto the pump motor shaft. A separate support ring is fastened to the housing to close the open n...  
WO/2002/053914A1
The diaphragm suction pump has a pump chamber (7) located in a base plate (6), the wall of said chamber extending in a conical manner from a central flat base section (7') to the lateral edge (8). The elastic pump diaphragm (5), which sp...  
WO/2002/051484A1
The invention concerns a method for open-loop regulation of a breathing aid apparatus, which consists in: constituting a compression chamber (1), by dividing it into two compartments (3, 4) each connected to an intake (5, 7) of air or br...  
WO/2002/052154A1
The invention relates to a dosing device for conveying small amounts of substances from a reservoir (3) in an application chamber (2) via a micromembrane pump (4) which can be used particularly for conveying small doses of gas (aromas). ...  
WO/2002/033256A2
Disclosed herein is a wobble diaphragm pump having a housing with an open neck. A wobble piston can be passed through the open neck and fit onto the pump motor shaft. A separate support ring is fastened to the housing to close the open n...  
WO/2002/014695A1
The present invention reveals a method and apparatus for more efficiently injecting a primary fluid flow (10) in a fluid ejector used to pump lower velocity fluid from a secondary source (12). In one embodiment, the primary fluid flow (1...  
WO/2002/006673A1
A vest (11) for a human body (14) has an air core (36) coupled to a pulsator (12) operable to subject the vest to pulses of air which applies and releases high frequency pressure forces to the body. The pulsator (12) has tow diaphragms (...  
WO2001030497A3
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 sec...  
WO/2001/097319A1
An electrically activated diaphragm air mover for gas depolarized power supplies such as metal-air batteries and fuel cells is described utilizing an electrically activated diaphragm moving within a cell casing or enclosure. An electrica...  
WO/2001/094000A1
A hydrogen gas generator for producing hydrogen gas from the controlled reaction of the alkaline metal sodium contained in a supply tube assembly (149) which is introduced in incremental amounts to water within a pressure tank (26). Hydr...  
WO/2001/083990A1
The invention relates to a multistage device (1) for delivering moist gases. Said device comprises several delivery pumps (2, 3) each of which having a displacer that oscillates inside a delivery space, and being connected in series via ...  
WO/2001/081763A1
A pump (1) for gases to be measured has a pump housing (2) in which a pump chamber (3) is located. Said pump chamber is sealed off by a working membrane (5), said membrane (5) being connected to a crank gear (9) by a connecting rod (8) o...  
WO/2001/081762A1
The invention relates to a measuring gas pump (1)having a housing (2) with a pump chamber (3) located therein, which is closed by a working membrane (5). The membrane (5) is connected to a crank mechanism (9) by means of a connecting rod...  
WO/2001/040654A1
The invention relates to an active pneumatic component, in particular for pneumatically controlling a hydraulic bearing. Said component is characterised in that an electrically driven oscillating membrane pump is combined with a multiway...  
WO/2001/033078A1
An electrostatic device includes a conductive element (12) and a dielectric element (16) having surfaces that are closely-spaced or contacting, a plurality of electrodes (20, 22, 24) positioned adjacent to and electrically isolated from ...  
WO/2001/030497A2
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 sec...  
WO/2001/027475A1
The invention relates to a multi-stage diaphragm-type compressor (100) and to a method for the multi-stage compression of gases. At least two piston-cylinder units arranged at equal angular intervals from each other around the axis of ro...  
WO/2001/025700A1
A refrigeration system has a compressor (18), a condensor (12), and an evaporator (16) connected in a loop to provide a refrigeration cycle designed for small heat loads of less than one Kilowatt. The compressor (18) has a first refriger...  
WO/2001/014744A1
The invention relates to a membrane pump (104) comprising a working membrane (1) that delimits a delivery chamber (2), and comprising an additional membrane (3) that is arranged on the side of the working membrane (1) facing away from th...  
WO/2000/070227A1
A combination of a piston and a chamber, wherein the chamber defines an elongate chamber having a longitudinal axis, the chamber having, at a first longitudinal position thereof, a first cross-sectional area thereof and, at a second long...  
WO1999053984A8
The invention relates to a portable apparatus for ventilation support to persons with respiratory distress. The apparatus is provided with a compressed air pump which may be connected to the mouth or the nose via tube means (8) for gener...  
WO/2000/065235A1
The object of the invention is to provide a reliable and inexpensive combination of a chamber and a piston to be used in any device where such a combination is needed so that it complies with specific demands towards the operation force ...  
WO/2000/045673A1
A power inflation system, e.g. for use as an inflatable lumbar support for a seat, comprises a pump (22) in fluid communication, through a conduit (140A, 140B) with a closed cell (18). A sound attenuator (200) is operatively disposed in ...  
WO/2000/045053A1
A compressor or expansion device (1) for use with compressive fluid and comprising a flexible hose (8) connected between a pair of ports (5A, 5B) and against which a pair of spaced apart, adjacent contact elements bear whereby a portion ...  
WO/2000/039464A1
The invention aims at avoiding the inconvenience or existing pumps and enables to reach significant low pressure levels, while ensuring that the pipes do not collapse. When the pipes containing a fluid at a pressure lower than atmospheri...  
WO/2000/036302A1
A ferroelectric pump has one or more variable volume pumping chambers internal to a housing. Each chamber has at least one wall comprising a dome shaped internally prestressed ferroelectric actuator having a curvature and a dome height t...  
WO/2000/028212A1
The invention relates to a method for conveying damp gases by means of a conveyor device (1) and also relates to a conveyor device (1) for carrying out said method. The conveyor device (1) has at least one feed pump (2) with an oscillati...  
WO/2000/028215A1
A mesopump having a plurality of elementary cells, a process for making the same, and a method of pumping fluids using the mesopump. The cells each have a body forming a cavity having upper and lower electrodes with curved surfaces facin...  
WO/2000/025024A1
A long-life, low-noise, electromagnetic blower that uses a simplified low-cost structure and operates in either of high-output and low-output modes. In low-output mode, electromagnetic coils (33A, 33B) connected in series are energized b...  
WO/2000/012896A1
A flexible cell assembly comprises a flexible member (1) which, either alone or in conjunction with other components, forms a chamber (43) with one or more ports (41, 42) to communicate with liquids, gases or other materials. The volume ...  
WO/2000/003141A1
A small pump device, comprising a motor which constitutes the small pump device, a case body installed on the output shaft surface of the motor, a rotating cylindrical body which is assembled onto the output shaft of the motor and perfor...  
WO/1999/066628A1
The magnetic actuator for reciprocating motion of a compressor diaphragm, piston or the like. The actuator comprises a stator with stator poles (3a, 3b, 3c), excitation windings (6) and a backing plate (7). Non-magnetic support arms (4a,...  
WO1999051882A9
A motorized pump which includes a flexible diaphragm (70) fitting within a rigid member (90), a motor drive mechanism (28) for driving a puller member (48) attached to the diaphragm away from the rigid member to create a space between th...  

Matches 351 - 400 out of 3,481