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. 23, 2020
Filed:
Apr. 04, 2018
Amazon Technologies, Inc., Seattle, WA (US);
Joseph Rutland, Norfolk, GB;
Liam Stewart Cavanaugh Pingree, Seattle, WA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Example variable pitch propulsion mechanisms may include propeller hubs having variable pitch propeller blades. The propeller hubs may include shape memory actuators operatively connected to the propeller blades to change their pitch. In addition, the propeller hubs may include linkage arms to transfer movement from the shape memory actuators to the propeller blades. Further, the propeller hubs may include geared connections to transfer movement from the shape memory actuators to the propeller blades. Moreover, the propeller hubs may include latch mechanisms, similar to retractable pen mechanisms, to transfer movement from the shape memory actuators to the propeller blades and decouple movement of the propeller blades from alignment of the propeller blades.