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:
May. 31, 2022
Filed:
Sep. 30, 2019
Amazon Technologies, Inc., Seattle, WA (US);
Dan Beltzer, Issaquah, WA (US);
Matthew Ray Desjardien, Kenmore, WA (US);
Stavan H. Dholakia, Shoreline, WA (US);
Kenneth Edward Doe, Carnation, WA (US);
Sergio Alfredo Phan Lung Li, Seattle, WA (US);
Michael P. Mosman, Everett, WA (US);
Paul Eugene Munger, Seattle, WA (US);
Nathan Pius O'Neill, Snohomish, WA (US);
Andrew James Pierce, Renton, WA (US);
Robert M. Riggs, Lynnwood, WA (US);
AMAZON TECHNOLOGIES, INC., Seattle, WA (US);
Abstract
A platform is supported at four corners by four half-bridge load cells. Adjacent load cells are oppositely polarized. During operation, analog output from a pair of oppositely polarized half-bridge load cells is provided to an instrument amplifier. Analog output from the instrument amplifier is provided to an analog to digital converter to provide digital data. The digital data is then used to determine weight data indicative of a weight as measured by the pair of half-bridge load cells at that time. A set of switching elements, such as a quad bilateral switch controlled by a microcontroller, rapidly switch between pairs of oppositely polarized load cells. The weight data may be used to determine an overall weight change on the platform, such as a pick or a place of an item. Weight data from the four pairs of load cells may be used to determine a change in center of gravity.