A brush unit for electrically contacting a curved surface of a slip ring includes a brush holder and a resilient brush. The resilient brush is mounted to the brush holder in such a way that the brush is resiliently preloaded between two points at which the brush is supported against the brush holder and exhibits a camber. The brush is in contact with the brush holder between the two points.

The disclosure relates to a power-transfer unit for a sealing unit of a packaging machine comprising a support, intended to be attached to a sealing unit, a power bar comprising a contact-initiation section, a contact-termination section, and an intermediate section therebetween, the power bar being resiliently suspended in the support and being movable along a first direction being normal to a contact surface of the intermediate section. The power bar is suspended in the support by a first leaf spring.

A grounding brush assembly includes a grounding brush with a plurality of conductive fibers and a mounting plate. The mounting plate includes a radial main body, a plurality of retaining tongues extending from the main body for axially and radially retaining the brush, and a centering means extending from the main body and at least locally surrounding the grounding brush while remaining radially separated therefrom. The centering means has an outer surface defining the outer diameter of the mounting plate. The mounting plate further includes at least one mounting tongue which protrudes outwardly with respect to the outer surface of the centering means and which is flexible in the radial direction.

A grounding brush assembly includes a grounding brush and a mounting plate. The mounting plate includes a radial main body and a plurality of tongues for axially and radially retaining the brush, the tongues extending from the main body and being spaced apart from one another in the circumferential direction. The mounting plate further includes a plurality of centering tabs which extend from the main body and are offset radially outwardly at least partially with respect to the tongues.

A brush holder for slipring brushes comprises a brush mount held by a lever at a base. The lever is connected by a base pivot to the base and is pivotable in a plane orthogonal to a brush mount pivot axis and/or to a slipring rotation axis. A spring is provided between the base and the lever. The brush mount is connected to the lever by a brush mount pivot pivotable in said plane. The brush mount holds a first brush and a second brush wherein the brush mount pivot is between the first brush and the second brush.

A brush holder for slipring brushes comprises a brush mount held by a lever at a base. The lever is connected by a base pivot to the base and is pivotable in a plane orthogonal to a brush mount pivot axis and/or to a slipring rotation axis. A spring is provided between the base and the lever. The brush mount is connected to the lever by a brush mount pivot pivotable in said plane. The brush mount holds a first brush and a second brush wherein the brush mount pivot is between the first brush and the second brush.

A motor includes: a lid including an opening; a bracket including a projecting part; and a terminal extending from the projecting part. A part of the bracket is covered by the lid. The projecting part projects from the opening of the lid.

A motor includes: a lid including an opening; a bracket including a projecting part; and a terminal extending from the projecting part. A part of the bracket is covered by the lid. The projecting part projects from the opening of the lid.

A grounding brush assembly includes a plurality of conductive fibers extending from at least one support, a mounting plate having a first side and a second side and an opening configured to surround a rotatable motor shaft having an axis of rotation, and a plurality of tabs disposed in a circle around the periphery. Each of the tabs extends axially from the first side of the mounting plate and radially toward or away from the axis of rotation to define with an adjacent portion of the first side of the mounting plate a U-shaped bracket. The at least one support is secured against the first side of the mounting plate by the plurality of tabs.

A grounding brush assembly includes a plurality of conductive fibers extending from at least one support, a mounting plate having a first side and a second side and an opening configured to surround a rotatable motor shaft having an axis of rotation, and a plurality of tabs disposed in a circle around the periphery. Each of the tabs extends axially from the first side of the mounting plate and radially toward or away from the axis of rotation to define with an adjacent portion of the first side of the mounting plate a U-shaped bracket. The at least one support is secured against the first side of the mounting plate by the plurality of tabs.