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. 25, 2021
Filed:
Oct. 22, 2019
Magpul Industries Corp., Austin, TX (US);
Erin Czarnecki, Broomfield, CO (US);
Jeffrey Holt, Austin, TX (US);
Michael Leighton, Broomfield, CO (US);
Donald McKelvey, Erie, CO (US);
Steven Dunbar, Lafayette, CO (US);
Timothy Eric Roberts, Broomfield, CO (US);
Nicholas Kielsmeier, Denver, CO (US);
Eric Chow, Highlands Ranch, CO (US);
Magpul Industries Corp., Austin, TX (US);
Abstract
This disclosure describes systems, methods, and apparatus for detecting and displaying a number of rounds in a firearm magazine comprising a maximum number of N rounds. The magazine may comprise a follower, magnets on the follower, and <N magnetic-field-sensing sensors arranged along a path of the magnets when the follower moves along a length of the magazine, the sensors generating round count data based on a position of the one or more magnets relative to the <N magnetic-field-sensing sensors, and a first substantially flat antenna arranged on an inside of the magazine and configured to wirelessly transmit a round count indication to a second substantially flat antenna on the firearm, the round count indication based on the round count data, the second substantially flat antenna affixed to an inside of a magazine well of the firearm and mostly overlapping with the first substantially flat antenna.