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AssigneeSKF Engineering and Research Centre B.V.
InventorsHendrikus Jan Kapaan, Thomas Wilhelm Fucks, Jiri Gurka, Jérôme Dubus, Christian Boch, Clair Druet, Asbjorn Bundgart, Alberto Visconti, Jacobus Zwarts, Albert Van Den Kommer
Estimating the term…
A screw actuator comprises a screw (1) and a nut (2) which are each provided with at least a helical groove (3,4), and a series of rollers or balls (5) which are in rolling contact with the grooves (3,4). A sleeve (6) is provided which surrounds the nut (2) at least partly. The sleeve (6) may carry a seal (7) which acts between the nut (2) and screw (1); e.g. a wiper seal. The seal (7) may be fixedly connected to the nut (2), and frictionally engage the screw (1).
Screw actuator, comprising a screw (1) and a nut (2) which are each provided with at least a helical groove (3, 4), and a series of rollers or balls (5) which are in rolling contact with said grooves (3, 4), a sleeve (6) is provided which surrounds the nut (2) at least partly, characterised in that the sleeve (6) carries a first seal (7) which acts between the nut (2) and screw (1), wherein the nut (2) is provided with at least one radially oriented through-going aperture (11) comprising an insert (12) that moves the balls (5) between axially adjacent parts of the groove (3, 4), and wherein the sleeve (6) retains said insert (12) within said aperture (11).
Brake calliper for a disc brake, comprising a housing (26) which carries two opposite brake pads which enclose a gap for accommodating a brake disc, and one or more screw actuators comprising a screw (1) and a nut (2) which are each provided with at least one helical groove (3, 4), a series of rollers or balls (5) which are in rolling contact with said grooves (3, 4), a sleeve (6) being provided which surrounds the nut (2) at least partly, characterised in that the sleeve (6) carries a first seal (7) which acts between the nut (2) and screw (1), wherein the nut (2) is provided with at least one radially oriented through-going aperture (11) comprising an insert (12) that moves the balls (5) between axially adjacent parts of the groove (3, 4), and wherein the sleeve (6) retains said insert (12) within said aperture (11).
Dependencies are inferred from the claim text.