国家/地区 世界知识产权组织（3）
IPC部 F（3）
IPC大类 F04（3）
IPC小类 F04B（3）
IPC F04B043/04（3）
发明人 PINKERTON J F（3） BADGER D A（2）
公开年
申请年
专利权人 CLEAN ENERGY.（3）

Graphene-drum pump system, has second electrically conductive membrane pump system which is operable to receive information transmitted through air through ultrasonic waves by first device and is operable to emit sound.

PINKERTON J F

Audio speaker for use in liquid ultrasonic application has electrically conductive membrane, e.g. graphene membrane, moved in two directions to cause air to move away from and toward substrate at different average velocities.

PINKERTON J F, BADGER D A

Pump i.e. graphene-drum pump, for use in e.g. graphene-drum Stirling engine system, has downstream valve operated to be in closed position, where cavity, upstream valve and downstream valve include electrically conductive drum.

PINKERTON J F, BADGER D A