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:
Dec. 06, 2011
Filed:
May. 04, 2009
Applicants:
Joseph Imlach, Anchorage, AK (US);
Paul J. Farley, Sequim, WA (US);
Tracy D. Devoll, Wasilla, AK (US);
Inventors:
Joseph Imlach, Anchorage, AK (US);
Paul J. Farley, Sequim, WA (US);
Tracy D. DeVoll, Wasilla, AK (US);
Assignee:
Alaska Native Technologies, LLC, Anchorage, AK (US);
Primary Examiner:
Int. Cl.
CPC ...
B63G 8/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A buoyancy control system comprises a housing and first and second pistons movably supported by the housing. In a shallow mode, displacement of the first piston alters a buoyancy of the buoyancy control system. In a deep mode, displacement of the first and second pistons alters the buoyancy of the buoyancy control system.