Patent ID: 7661509

Claim:
A device adapted to be connected to a source of pressure pulses and flow pulses so as to receive and regulate the pressure pulses and flow pulses, the device including: an entry end with an opening therein adapted to be placed in fluid communication with one or more outlets in the source from which the pressure pulses and flow pulses are emitted, and an exit end with an opening therein in fluid communication with the opening in the entry end of the device and allowing for the discharge from the device of the pressure pulses and flow pulses generated by the source after the pressure pulses and flow pulses generated by the source have passed through the device; and a reflecting member located in the device so as to reflect at least a portion of each pressure pulse, whereby the noise generated by the pressure pulses is attenuated, the reflecting member adapted to be spaced from at least one of the one or more outlets a distance such that the at least a portion of each pressure pulse that is reflected by the reflecting member is reflected as an expansion wave back through the opening in the entry end of the device to the one or more outlets in the source such that the expansion wave arrives at the one or more outlets while at least a portion of a flow pulse is being emitted from the one or more outlets.