Matches 1 - 39 out of 39
Match Document Document Title
7367785 Reduced icing valves and gas-driven motor and reciprocating pump incorporating same  
A valve for a gas-driven motor and a valve assembly and reciprocating pump incorporating the valve are provided. The valve includes a shiftable valve for alternatively supplying a motive gas...
7134849 Molded disposable pneumatic pump  
A mechanical pump having a unitary construction such that the fluid being pumped is prevented from leaking without requiring the use of discrete seal elements. The absence of discrete seal elements...
7063517 Valve apparatus and pneumatically driven diaphragm pump incorporating same  
A valve apparatus and pneumatically driven diaphragm pump incorporating same having a valve body having a longitudinal axis and an actuator having an axis with a first end and a second end. The...
7021909 Oscillator for pneumatic pump having single valve  
A pneumatic oscillator for providing pumping force to a pump. The oscillator has a single valve for controlling both the rate of oscillation of the oscillator and the flow of air. The valve...
6962487 Fluid driven pump with improved exhaust port arrangement  
A fluid driven pump. One embodiment of the fluid driven pump may include first and second diaphragms supported within a housing assembly such that first and second fluidtight expansion chambers are...
6957952 Fiber optic system for detecting pump cycles  
A fiber optic system for detecting a stroke of a pump, the fiber optic system including a first fiber optic line configured for directing light onto a portion of the pump that moves during the...
6901961 Double diaphragm pump having a spool valve  
A double diaphragm pump having a spool valve. The spool valve includes a housing that has a first end, a second end, and at least one housing aperture defined therethrough from the first end to the...
6722256 Reduced icing valves and gas-driven motor and diaphragm pump incorporating same  
A reduced icing valve for an gas-driven motor and a reciprocating double diaphragm pump is provided having a shiftable valve for alternatively supplying a motive gas through first and second supply...
EP1398504A1 Double diaphragm pump  
Abstract not available for EP1398504
6695593 Fiber optics systems for high purity pump diagnostics  
A pump for ultra-pure fluids comprises a flexible diaphragm separating a fluid chamber from an air chamber. The diaphragm creates an airtight seal between the fluid chamber and the air chamber. Any...
6644941 Apparatus and method for reducing ice formation in gas-driven motors  
A method for reducing ice formation in a gas-driven motor and a reduced-icing, gas-driven motor are provided, the motor having a housing with a first pressure chamber and a second pressure chamber....
6644940 Restarting device for a fluid operated double diaphragm piston pump  
A restarting device of a pump including a center rod defining fluid delivering chambers and driving chambers 11 b and 12 b . The restarting device of the pump further includes: a change-over...
6561774 Dual diaphragm pump  
A dual diaphragm pump comprises a first chamber, a second chamber, a mechanical link, and a drive mechanism. The first chamber comprises a first cavity and a first diaphragm. The first chamber...
6402486 Free-diaphragm pump  
A pump for ultra-pure fluids comprises a flexible diaphragm separating a fluid chamber from an air chamber. The diaphragm creates an airtight seal between the fluid chamber and the air chamber when...
6280149 Active feedback apparatus and air driven diaphragm pumps incorporating same  
A diaphragm pump having an active feedback system is provided. The diaphragm pump includes a diaphragm pump having a housing including a pumping cavity. The pump cavity having at least one...
EP0711905B1 Improved mechanical shift, pneumatic assist pilot valve  
Abstract of EP0711905 A pneumatic assist valve receives constant air pressure from supply air to provide the pneumatic assist to shift the pilot valve, thereby eliminating false signals acting on...
6190136 Diaphragm failure sensing apparatus and diaphragm pumps incorporating same  
A diaphragm failure sensing apparatus for use in a diaphragm pump having at least two pumping cavities, each pumping cavity having a fluid chamber and a motive gas chamber separated by a pumping...
6168387 Reciprocating pump with linear displacement sensor  
A reciprocating pump having an active feedback system is provided. The reciprocating pump includes a reciprocating pump having a pump chamber with a rod reciprocally movable along a longitudinal...
6106246 Free-diaphragm pump  
A pump for ultra-pure fluids, such as hot, de-ionized water, processing acids, and the like, such as those used in the semiconductor processing industries, is designed to operate at greater than 10...
5979563 Method and apparatus for providing pressurized water to a residential fire sprinkler system in the absence of electricity  
A method and apparatus for providing pressurized water to a residential fire sprinkler system in the absence of electricity. The apparatus includes a double diaphragm pump operated from compressed...
5957670 Air driven diaphragm pump  
A pump having a center section including an actuator housing and an air valve is arranged with air chambers to either side of the actuator housing. Diaphragms are associated with the air chambers...
5758563 Fluid driven reciprocating pump  
A fluid-driven reciprocating pump includes a housing and a reciprocating assembly defining first and second working fluid chambers. The housing includes an inlet and an outlet for introduction and...
5649813 Chamber insulation for prevention of icing in air motors  
Insulation is provided in the form of wall insulation, piston or diaphragm insulation and/or piston rod and/or diaphragm washer insulation to increase the temperature in the working air chamber of...
5616005 Fluid driven recipricating apparatus  
An apparatus comprising a pair of fluid driven pump assemblies in a back-to-back configuration to yield a bi-directional pump. Each of the pump assemblies includes a piston or diaphragm which...
5607290 Air driven diaphragm pump  
A pump having a center section including an actuator housing and an air valve is arranged with air chambers to either side of the actuator housing. Diaphragms are associated with the air chambers...
5584666 Reduced icing air valve  
Provision is made for an air control valve to bypass the ice forming exhaust of a reciprocating pressure activation chamber in a reciprocating double diaphragm pump utilizing the supply pressure to...
5567118 Non-lubricated, air-actuated, pump-operating, shuttle valve arrangement, in a reciprocating pump  
A pilot spool is interposed between the compressed air supply and the diaphragm pump-operating main spool, to insure that, at any one time, only one end of the bore in which the main spool...
5551847 Lost motion pilot valve for diaphragm pump  
A mechanical shift pilot valve is provided with lost motion response to accommodate slight piston reversals at travel limits to prevent a false shift signal related thereto.
5527160 Mechanical shift, pneumatic assist pilot valve  
A pneumatic assist valve receives constant air pressure from supply air to provide the pneumatic assist to shift the pilot, eliminating false signals acting on the trip rod and the design also...
EP0711905A2 Improved mechanical shift, pneumatic assist pilot valve  
A pneumatic assist valve receives constant air pressure from supply air to provide the pneumatic assist to shift the pilot valve, thereby eliminating false signals acting on the trip rod. The...
5368452 Double diaphragm pump having two-stage air valve actuator  
A double diaphragm pump operated by selectively switching pressurized air into either of two diaphragm chambers; the air actuator valve is a cup valve which is slidable over orifices in a valve...
5332372 Modular double-diaphragm pump  
The fluid-operated, double diaphragm pump of the invention includes a central housing block having opposed side faces, and a pair of diaphragm housing end sections secured to opposite sides of the...
5326234 Fluid driven pump  
A fluid driven pump includes an inlet, at least one expansion chamber for expanding upon introduction of fluid thereinto and contracting upon removal of fluid therefrom, a pumping chamber adjacent...
5277555 Fluid activated double diaphragm pump  
An improved pilot valve construction for use in a fluid and mechanically actuated double diaphragm pump which includes a housing, first and second axially spaced fluid pressure chambers, first and...
5232352 Fluid activated double diaphragm pump  
A double diaphragm pump includes a connecting shaft for interconnecting the opposed diaphragms mounted in the pump body for reciprocal movement relatively thereof and a pilot valve sleeve...
5195878 Air-operated high-temperature corrosive liquid pump  
A liquid pump is disclosed having a center block containing inlets and outlets for liquid to be pumped and air to operate the pump with associated valves for liquid and air. A pair of opposed...
5049038 Fluid compressors  
A two stage fluid compressor is operated by a pneumatically operated relay valve controlled by a fluidic switching device in which switching pulses of pressurized control air are obtained...
5006104 Heart pump having contractible guide mechanism for pusher plate  
A blood pump is disclosed that is useful as ventricle assist or replacement device comprising a housing having a blood chamber and inlet and outlet ports for the ingress and egress of blood to and...
4981418 Internally pressurized bellows pump  
A bellows-type pump has a plastic bellows interiorly supported by interior pressure. The interior pressure is supplied by a fluid source which passes through a pressure regulator to control the...
Matches 1 - 39 out of 39