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:
Jun. 16, 2020
Filed:
Jan. 02, 2019
Hrl Laboratories, Llc, Malibu, CA (US);
Christopher P. Henry, Thousand Oaks, CA (US);
Sloan P. Smith, Calabasas, CA (US);
David W. Shahan, Los Angeles, CA (US);
Joseph Creecy, Malibu, CA (US);
Jeffrey Bowles, Malibu, CA (US);
Christopher Swanhart, Malibu, CA (US);
Robert Walling, Malibu, CA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
A watercraft includes a hull having inner and outer surfaces and at least one collapsible strake coupled to the hull. The collapsible strake includes a movable skin hingedly coupled to the hull. The collapsible strake also includes a dampening element and a negative stiffness element each extending from an inner surface of the movable skin to the outer surface of the hull. The movable skin is configured to rotate between an uncollapsed configuration having a first stiffness and a collapsed configuration having a second stiffness greater than the first stiffness.