Abstract: A pump employing a nutating plate within a chamber impels fluid flow from an axial inlet to a peripheral outlet. The chamber extends 360° and the plate has holes about the axis thereof such that both sides of the plate can operate to impel fluid through the chamber. A dynamic balancing system which may include two dynamic balancing rings with multiple weights therein act to overcome eccentricities and vibrational moments.

Abstract: A pump employing a nutating plate within a chamber impels fluid flow from an axial inlet to a peripheral outlet. The chamber extends 360° and the plate has holes about the axis thereof such that both sides of the plate can operate to impel fluid through the chamber. A dynamic balancing system which may include two dynamic balancing rings with multiple weights therein act to overcome eccentricities and vibrational moments.

Abstract: A pump employing a nutating plate within a chamber impels fluid flow from an axial inlet to a peripheral outlet. The chamber extends 360° and the plate has holes about the axis thereof such that both sides of the plate can operate to impel fluid through the chamber. A dynamic balancing system which may include two dynamic balancing rings with multiple weights therein act to overcome eccentricities and vibrational moments.

Abstract: A pump employing a nutating plate within a chamber impels fluid flow from an axial inlet to a peripheral outlet. The chamber extends 360° and the plate has holes about the axis thereof such that both sides of the plate can operate to impel fluid through the chamber. A dynamic balancing system which may include two dynamic balancing rings with multiple weights therein act to overcome eccentricities and vibrational moments.

Abstract: A peristaltic pump having a shaft mounted within a housing and coupled with a rotor to induce nutation in a wobble plate. A pump diaphragm is located and affixed to one side of the wobble plate and at its periphery to the housing. A backup diaphragm is employed on the other side of the wobble plate and provides a resilient coupling through a driven plate with the rotor. A pump casing associated with the diaphragm defines a pump cavity with the pump diaphragm. An inlet and an outlet having ball check valves or flapper valves control flow. An insert in the pump diaphragm has an oblong minor cross section and is employed to couple with the wobble plate. Mounting elements on the insert extend from one side of the diaphragm which may be formed in the relaxed state and biased inwardly toward one another for mounting to the wobble plate. A boss associated with the diaphragm and a cavity associated with the wobble plate help to further strengthen the diaphragm at the insert.

Abstract: A peristaltic pump having a shaft mounted within a housing and coupled with a rotor to induce nutation in a wobble plate. A pump diaphragm is located and affixed to one side of the wobble plate and at its periphery to the housing. A backup diaphragm is employed on the other side of the wobble plate and provides a resilient coupling through a driven plate with the rotor. A spherical mount supports the wobble plate and is spring biased such that the mount and the resilient coupling provide a resilient mounting for the nutating wobble plate. A pump casing associated with the diaphragm defines a pump cavity with the pump diaphragm. An inlet and an outlet having ball check valves or flapper valves control flow. The pump diaphragm includes a ridge selectively positioned at the intersection with the diaphragm frame plate and with the wobble plate to increase resistance to liquid pressures on the diaphragm.

Abstract: An air driven diaphragm pump having an actuator valve for converting a source of compressed air into a reciprocating drive. The actuator valve includes a valve piston for alternately directing air to one side or the other of the pumps, a control rod fixed to the reciprocating elements of the pump and means for shifting the valve piston responsive to the position of the control rod. An axially spaced bifurcated inlet is employed to provide additional energy to the shifting of the valve piston. The valve piston also is arranged to cover vent ports as a mechanism for closing off all compressed air under stalled conditions of the pump.

Abstract: A diaphragm configuration is disclosed for an air-driven pump. The diaphragm includes concentric ribs on the pressure side of the flexure portion thereof. This has been found to extend the life of diaphragms made of relatively brittle materials such as synthetic resin polymers. A ridge is provided on the surface of the diaphragm where sealing is to occur as a means for increasing the sealing capability of the synthetic resin polymer material.

Abstract: An actuator valve for an air driven reciprocating device wherein the valve includes a control rod responsive to movement of the reciprocating device and a valve piston pneumatically actuated by movement of the control rod. The valve piston selectively directs air to reciprocate the driven mechanism. The control rod includes a single axial passageway to selectively vent each end of the cylinder within which the valve piston operates.

Abstract: A diaphragm configuration is disclosed for an air-driven pump. The diaphragm includes concentric ribs on the pressure side of the flexure portion thereof. This has been found to extend the life of diaphragms made of relatively brittle materials such as synthetic resin polymers.