US Patent Issued to NIPPON PILLAR PACKING on Sept. 30 for "Rolling diaphragm pump" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,040, issued on Sept. 30, was assigned to NIPPON PILLAR PACKING Co. LTD. (Osaka, Japan).

"Rolling diaphragm pump" was invented by Keisuke Murata (Osaka, Japan) and Atsufumi Kinoshita (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rolling diaphragm pump includes a housing, a rolling diaphragm, a piston, a motor, and a ball screw. Rotational motion of the motor is converted into linear motion by the ball screw to cause the piston to reciprocate, and a volume of a pump chamber is changed by deformation of the rolling diaphragm, thereby sucking and discharging a transport fluid. The ball screw includes a screw shaft placed coaxially with...