US 11,902,778 B2
Credentialed wireless fob to control power tool devices
Anthony Davis, Brookfield, WI (US); Corey J. Dickert, Oconomowoc, WI (US); and Timothy R. Obermann, Waukesha, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Appl. No. 17/050,863
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
PCT Filed Aug. 13, 2020, PCT No. PCT/US2020/046107
§ 371(c)(1), (2) Date Oct. 27, 2020,
PCT Pub. No. WO2021/030549, PCT Pub. Date Feb. 18, 2021.
Claims priority of provisional application 62/886,132, filed on Aug. 13, 2019.
Prior Publication US 2023/0164550 A1, May 25, 2023
Int. Cl. H04W 12/06 (2021.01); H04W 12/69 (2021.01)
CPC H04W 12/06 (2013.01) [H04W 12/69 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A wireless fob comprising:
a wireless transceiver;
a memory; and
an electronic processor coupled to the wireless transceiver and to the memory, the electronic processor configured to:
establish, via the wireless transceiver, a first communication link between the wireless fob and an external device,
receive, over the first communication link, first identification information and credential information of a power tool device from the external device,
store the first identification information and the credential information in the memory,
receive, via the wireless transceiver, an identification signal from the power tool device, the identification signal including second identification information,
identify the power tool device by determining that the first identification information matches with the second identification information,
transmit, via the wireless transceiver, the credential information to the power tool device,
establish a second communication link between the wireless fob and the power tool device based on the credential information,
transmit, over the second communication link, a command to the power tool device to control an operation of the power tool device,
receive, over the first communication link and from the external device, a credential expiration period that indicates a first amount of time, after receiving the credential information, during which the wireless fob has permission to use the credential information to establish the second communication link,
cease use of the credential information upon expiration of the first amount of time, and
receive, over the first communication link and from the external device, an unlock duration time that indicates a second amount of time during which the power tool device is configured to be enabled after receiving the command from the wireless fob, wherein the command includes an enable command that allows operation of a motor of the power tool device in response to a trigger of the power tool device being actuated.