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:
Jul. 01, 2025
Filed:
Dec. 07, 2023
Amazon Technologies, Inc., Seattle, WA (US);
Jian Li, San Jose, CA (US);
Marcel Colman Eric Stieber, San Jose, CA (US);
AMAZON TECHNOLOGIES, INC., Seattle, WA (US);
Abstract
Inductive power transfer across a rotary joint including a motor comprises a first portion with a magnetically permeable power transmit core with a power transmit coil and a second portion comprising a magnetically permeable power receive core with a power receive coil. The core material in the respective cores directs a time-varying electromagnetic field emitted by the power transmit coil toward the power receive coil where the field is contained. As a result, adjacent devices on a side opposite the coil that utilize magnetic fields, such as motor coils, may operate without interference. For example, a brushless direct current motor comprising a stator in the first portion and a rotor in the second portion may operate while power is transferred. Data may be wirelessly transmitted between the first portion and the second portion.