Abstract: An atmospheric pressure plasma device is disclosed. The atmospheric pressure plasma device includes a conductive tube connected to a power device, an electrode formed as a plate and receiving power supplied from the conductive tube and a dielectric configured to control discharge instability by being formed to surround a side surface of the electrode.

Abstract: An atmospheric pressure plasma device is disclosed. The atmospheric pressure plasma device includes a conductive tube connected to a power device, an electrode formed as a plate and receiving power supplied from the conductive tube and a dielectric configured to control discharge instability by being formed to surround a side surface of the electrode.

Abstract: A brake system includes a pair of brake shoes and a wheel cylinder actuating the brake shoes such that the brake shoes contact a drum to apply braking action thereto. The wheel cylinder includes a housing, a first pair of oppositely facing pistons disposed within the housing, and a second pair of oppositely facing pistons disposed within the housing between the first pair of oppositely facing pistons. When the brake is operated, hydraulic pressure causes the second pair of pistons to move outward in opposite directions. As a result, the first pair of pistons move outward in opposite directions. Since the brake shoes are connected to the first pair of oppositely facing pistons, the brake shoes are applied to the drum. The wheel cylinder further includes a member disposed between and in contact with the second pair of oppositely facing pistons.

Abstract: A caliper assembly for a disc brake of a vehicle, which assembly includes a carrier member, a disc, a pair of main pads attached to main pad plates forming a pad assembly, two pairs of pistons mounted to springs disposed within recesses which pass through the carrier member for pressing circumferential edges of the pad plates when the hydraulic fluid pressure supplied through hoses from the master cylinder compresses the springs and pistons, whereby since the pad plates are thus immobilized with respect to the carrier member, the caliper assembly reduces squeal noise due to non-vibration of the pad plate, and prevents the pads from non-uniformly abrading, thermotransforming, and changing properties thereof so as to highly increase braking efficiency.