US 12,263,363 B2
Air respirator accessory having a battery connector plug with an unplug lever
Jonas N. A. Frejd, Falun (SE)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/283,404
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Oct. 22, 2019, PCT No. PCT/IB2019/059006
§ 371(c)(1), (2) Date Apr. 7, 2021,
PCT Pub. No. WO2020/084482, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 18202731 (EP), filed on Oct. 26, 2018.
Prior Publication US 2021/0339059 A1, Nov. 4, 2021
Int. Cl. F04D 25/06 (2006.01); A62B 18/00 (2006.01); A62B 18/08 (2006.01); F04D 29/70 (2006.01)
CPC A62B 18/006 (2013.01) [A62B 18/08 (2013.01); F04D 25/0673 (2013.01); F04D 25/0693 (2013.01); F04D 29/703 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system comprising a blower unit for a powered air purifying respirator, and an electrically powered accessory, wherein the blower unit comprises a blower device and a battery, wherein the accessory has a power connector, and wherein the blower unit comprises a power outlet for connection with the power connector such that the battery is used to power the blower device and the electrically powered accessory, the power connector comprising a plug and further an unplug lever for retracting the plug for unplugging, the unplug lever and the plug being connected by a pivot joint forming a pivot axis, wherein the plug comprises at least one electrical contact and the power connector further comprises at least one electrical wire that is electrically connected to the electrical contact, wherein the electrical wire forms a loop around the pivot axis;
wherein the unplug lever forms a handle arm and a counter arm extending away from the pivot joint in opposite directions, and wherein the blower unit has a body facing side which is a side that faces the body of a wearer who wears the blower unit, wherein the power outlet extends into the body facing side, and wherein in a situation in which the power connector is plugged into the power outlet, the unplug counter arm bears flat on the body facing side and the plug and the unplug lever are arranged in a T-configuration such that the plug extends from the pivot axis into the power outlet to accommodate the power connector of the accessory between the wearer and the blower unit.