The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 2012
Filed:
Sep. 24, 2010
Zhirong Wu, Beijing, CN;
Zhirong Wu, Beijing, CN;
Other;
Abstract
A liquid storage, loading and offloading system includes a storage tank having a water ballast compartment for storing water and a liquid storage compartment for storing liquid. The water ballast compartment and the liquid storage compartment are coupled to each other to form a closed interconnected system with pressurized inert gas above water and liquid. The storage tank is configured symmetrically and the center of gravity and buoyancy of it move along a vertical Z axis. Besides, a pump module may also be included and have a pair of loading pumps and a pair of offloading pumps. The pair of loading pumps operates substantially at equal mass flow rate to displace water with liquid. The pair of offloading pumps also operates substantially at equal mass flow rate to displace liquid with water. Therefore an equal mass flow rate displacement system is formed to keep a constant draft.