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:
Aug. 05, 2025
Filed:
Aug. 30, 2021
3m Innovative Properties Company, St. Paul, MN (US);
Matthew Shannon, Salisbury, NC (US);
Wesley M. Barbee, Oxboro, NC (US);
Craig M. Parkulo, Midland, NC (US);
Ronnie G. Durham, Monroe, NC (US);
Michael R. Oliva, Fair Oaks Ranch, TX (US);
Paul M. Rathke, Swannanoa, NC (US);
Brian Minier, Raleigh, NC (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A safety circuit for a Personal Alert Safety System (PASS) device includes a safety logic circuit and an alarm circuit. The safety logic circuit is communicably coupled to the PASS device. The safety logic circuit includes a timer configured to determine a time elapsed since the timer has been last reset. The safety logic circuit is configured to switch from an off state to an on state upon receiving an activation signal from the PASS device and reset the timer upon switching to the on state, generate a trigger signal in response to the timer exceeding a time threshold, and reset the timer upon receiving a reset signal from the PASS device before the timer exceeds the time threshold. The alarm circuit is communicably coupled to the safety logic circuit and configured to generate an alarm signal upon receiving the trigger signal from the safety logic circuit.