received by the International Bureau on 30 October 2018 (30.10.2018)

1 ) A blower comprising:

a. a rotor including:

i. one or more magnets and

ii. an impeller having a cup that receives the one or more magnets; b. a stator including:

i. an arbor and

ii. motor windings;

c. a printed circuit board;

d. a central aperture located between the printed circuit board and the arbor; and e. one or more contact springs are connected to the printed circuit board and extend over the central aperture from the printed circuit board so that when an arbor is extended through the central aperture, the arbor contacts the one or more contact springs to ground the arbor.

2) The blower of claim 1, wherein the one or more contact springs includes one or more spring contacts that connect the one or more contact springs to the arbor.

3) The blower of any of the preceding claims, wherein the one or more contact springs include one or more anchor legs that extend into the printed circuit board to connect the one or more contact springs to the printed circuit board.

4) The blower of claim 3, wherein the one or more anchor legs extend through the printed circuit board.

5) The blower of any of the preceding claims, wherein the one or more contact springs include one or more bias bumps that bias the one or more contact springs relative to the printed circuit board, the arbor, or both.

6) The blower of any of the preceding claims, wherein the one or more contact springs include one or more bias bumps that are located between one or more spring contacts and one or more anchor legs.

7) The blower of any of claims 1 through 4, wherein the one or more contact springs are free of one or more bias bumps.

8) The blower of any of claims 3 through 7, wherein the one or more anchor legs are located between one or more connection pads and the one or more spring contacts.

9) The blower of any of claims 3 through 8, wherein the one or more spring contacts extend at an angle relative to a spring arm in a direction of the arbor extending through the central aperture.

10) The blower of claim 9, wherein the spring arm is connected to a body and forms a cantilevered connection with the body.

11) The blower of claim 9 or claim 10, wherein the spring arm is deflected when the spring arm is in contact with the arbor. 12) The blower of claim 9 or claim 10, wherein the spring arm extends within a single plane when the spring arm is in contact with the arbor.

13) The blower of any of the preceding claims, wherein the one or more contact springs are a single contact spring.

14) The blower of claim 9, wherein the angle of the one or more spring contacts relative to the one or more spring arms is about 25 degrees or more and about 105 degrees or less.

15) The blower of claim 9, wherein the direction the one or more spring contacts extend is in an opposite direction as the one or more anchor legs.