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:
Apr. 28, 2026
Filed:
Apr. 06, 2023
Security Enhancement Systems, Llc, Northbrook, IL (US);
Matthew Frank Trapani, Deerfield, IL (US);
Anthony Mark Williams, Northbrook, IL (US);
Tyco Fire & Security GmbH, Neuhausen am Rheinfall, CH;
Abstract
A wireless lockout-tagout state machine-based access control system and method. Embodiments of the present disclosure provide for an electronic access control system that utilizes state machine-based single or multiple access codes to enable context-dependent or context-specific user-access permissions for different access points within an access-controlled area. Each state in the state machine may comprise an access event and a first state can lead to one or more subsequent different states, which may enable a feedback loop back to a past state to ensure a sequence of access events. In certain embodiments, the sequence of access events may be configured to ensure one or more safety protocols or parameters.