Provided is a twin disc pump which includes split rod bearings for connecting pump discs to a drive shaft, and pedestal bearings that also receive the drive shaft. The split rod bearings can be disassembled without having to disassemble any portion of a housing of the pump. Accordingly, an operator can gain access to the split rod bearings, the pedestal bearings, and the drive shaft from above the pump without having to access the pump from below. The twin disc pump also includes a new attachment mechanism for connecting a top portion of the housing to an intermediate portion. The twin disc pump also includes a modified metal ring for improved leakage prevention and easier release. The twin disc pump may also be included within a system including a frame capable of locking the pump in different orientations.

An electric diaphragm pump having a pump head assembly in a first housing, a motor assembly in a second housing, a fluid sensor, and a leak alert system and/or pump shut-off system. The fluid sensor detects a presence of fluid which has leaked outside of a pump chamber and is located within a cavity of the diaphragm drive chamber. The leak alert system indicates that fluid has been detected by the fluid sensor and the shut-off control system stops operation of the pump based on fluid being detected by the fluid sensor.

The pneumatic roadway energy recovery system generates power from the weight of vehicles, pedestrians and the like traveling on a roadway surface. The pneumatic roadway energy recovery system includes a plurality of pneumatic pumps in fluid communication with one another and that are arrayed beneath a roadway surface. The pneumatic pumps are in fluid communication with a storage tank. The vehicles, pedestrians and the like traveling on the roadway surface compress the plurality of pneumatic pumps as they pass over the pumps, generating pressurized air, which is received by and stored in the storage tank. Preferably, a turbine, such as a Pelton wheel or the like, is in fluid communication with the storage tank. Selective release of the pressurized air in the storage tank drives the turbine, which, in turn, is connected to an electrical generator for generating usable electrical power.

A pneumatic exomuscle system and methods for manufacturing and using same. The pneumatic exomuscle system includes a pneumatic module; a plurality of pneumatic actuators each operably coupled to the pneumatic module via at least one pneumatic line, a portion of the pneumatic actuators configured to be worn about respective body joints of a user; and a control module operably coupled to the pneumatic module, the control module configured to control the pneumatic module to selectively inflate portions of the pneumatic actuators.

A diaphragm structured for use in a diaphragm pump useful to pump a working fluid includes a first non-planar layer and a second non-planar layer. The second non-planar layer is independent from the first non-planar layer, but engaged to the first non-planar layer so that the first non-planar layer and the second non-planar layer form a closed space therebetween and travel together while flexing in an intake direction or a discharge direction within a pumping assembly of a diaphragm pump.

A fluid control device (10) includes a container (13), a pump (11), a solenoid valve (12), and a capacitor. The pump (11) is driven by a main power source, and is capable of pressurizing or depressurizing the inside of the container (13). A suction port and a discharge port of the pump (11) internally communicate with each other. The solenoid valve (12) is connected at both ends thereof to the container (13) and the pump (11). If the voltage of the main power source is reduced or lost, the solenoid valve (12) releases pressure in the container (13) by being driven by the power stored in the capacitor or secondary battery.

Present examples provide a fluid ejection apparatus which may comprise a pump having a pump body and a plurality of diaphragms disposed in the pump body. A plurality of fluid chambers are each associated with the plurality of diaphragms. A timing mechanism may open a leading fluid chamber of the plurality of fluid chambers and close a trailing fluid chamber of the plurality of chambers simultaneously with movement of corresponding pairs of the diaphragms. A third fluid chamber may be in a dwell mode. The movement of the timing mechanism causes discreet packet transfer of fluid between the leading and trailing fluid chambers or between a fluid chamber and a coupling.

A diaphragm structured for use in a diaphragm pump useful to pump a working fluid includes a first non-planar layer and a second non-planar layer. The second non-planar layer is independent from the first non-planar layer, but engaged to the first non-planar layer so that the first non-planar layer and the second non-planar layer form a closed space therebetween and travel together while flexing in an intake direction or a discharge direction within a pumping assembly of a diaphragm pump.

A wobble plate for a sequentially activated multi-diaphragm foam pump includes three or more wings, a wobble plate shaft, and an aperture located in each of the three or more wings. A first wing is configured to have a first distance from first contact surface of a first pump diaphragm. A second wing is configured to have a second distance from a first contact surface on a second pump diaphragm, and a third wing is configured to have substantially the second distance from a first contact surface on a third pump diaphragm.

Disclosed is a valve-less micro pump configuration that includes plural micro pump elements, each including a pump body having a compartmentalized pump chamber, with plural unobstructed inlet ports and outlet ports and a plurality of membranes disposed in the pump chamber to provide compartments. The membranes are anchored between opposing walls of the pump body and carry electrodes disposed on opposing surfaces of the membranes and walls of the pump body.