Hydraulic machine
AssigneeSauer-Danfoss ApS
InventorsJoergen Pedersen, Hans Christian Petersen, Claus Johansen
Life of this patent
Estimating the term…
Abstract
A hydraulic machine has a gear wheel (2) with outwardly extending teeth and a gear ring (4) with inwardly extending teeth formed by rollers each of which is supported in a pocket (8) in the gear ring, and pressurized spaces are formed between the gear wheel and the inwardly extending teeth. To keep the wear of the machine small each pocket (8) has at least two different radii (R1, R2, Rn) whereby a radius (R2, Rn) at a smaller displacement from the edge (12) of the pocket is larger than a radius (R1) at a larger displacement from the same edge (12) of the pocket (8).
Claims10
A hydraulic machine with a gear wheel having outwardly extending teeth and a gear ring having inwardly extending teeth,
- wherein the inwardly extending teeth are formed by rollers each of which is supported in a pocket in the gear ring,
- wherein the gear wheel forms pressure chambers with the inwardly extending teeth,
- wherein each pocket has at least two different radii, whereby a radius having a smaller spacing to an edge of the pocket is larger than a radius having a larger spacing from the same edge of the pocket, and
- wherein the radii proceed from different axes.
A hydraulic machine with a gear wheel having outwardly extending teeth and a gear ring having inwardly extending teeth,
- wherein the inwardly extending teeth are formed by rollers each of which is supported in a pocket in the gear ring,
- wherein the gear wheel forms pressure chambers with the inwardly extending teeth,
- wherein each pocket has at least two different radii, whereby a radius having a smaller spacing to an edge of the pocket is larger than a radius having a larger spacing from the same edge of the pocket, and
- wherein a radius in the middle of the pocket corresponds to a radius of the roller.
A hydraulic machine with a gear wheel having outwardly extending teeth and a gear ring having inwardly extending teeth,
- wherein the inwardly extending teeth are formed by rollers each of which is supported in a pocket in the gear ring,
- wherein the gear wheel forms pressure chambers with the inwardly extending teeth,
- wherein each pocket has at least two different radii, whereby a radius having a smaller spacing to an edge of the pocket is larger than a radius having a larger spacing from the same edge of the pocket, and
- wherein the pocket at each of its edges is connected to a planar surface.
Dependencies are inferred from the claim text.