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US 6,648,200 B2Granted
Magnetic-tape apparatus with a pressure-roller device and pressure-roller unit
AssigneeKoninklijke Philips Electronics N.V.
InventorHeinrich Huetter
Life of this patent
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AssigneeKoninklijke Philips Electronics N.V.
InventorHeinrich Huetter
Estimating the term…
In the case of a magnetic-tape apparatus (1) and/or in the case of a pressure-roller unit (65), a pressure-roller spindle (55) and a bearing part (60), which surrounds the pressure-roller spindle (55) and can be rotated relative to the pressure-roller spindle (55), for rotatably bearing a pressure roller (29) are provided. The bearing part (60) having a first bearing surface (63) which is formed by a toroidal surface and cooperates with a second bearing surface (64) likewise formed by a toroidal surface. The two bearing surfaces (63, 64) formed in each case by a toroidal surface permitting a wobbling movement of the pressure roller (29), and the two bearing surfaces (63, 64) being held lying against one another without play, and of these two bearing surfaces (63, 64) at least one bearing surface (63) being provided in a compliant fashion in radial directions relative to the other bearing surface (64).
A magnetic-tape apparatus (1) having a tape-drive shaft (33) which can be driven in a rotating fashion to drive a magnetic tape (12), and having a pressure-roller device (47) which has a pressure roller (29), that can be pressed against the tape-drive shaft (33), and an adjustable pressure-roller carrier (48), and a pressure-roller spindle (55) borne by the pressure-roller carrier (48), and a bearing part (60), which surrounds the pressure-roller spindle (55) and can be rotated relative to the pressure-roller spindle (55), for rotatably bearing the pressure roller (29), the bearing part (60) having a first bearing surface (63) which is formed by a toroidal surface, and in which the first bearing surface (63) of the bearing part (60) is operationally connected to a second bearing surface (64) of a counterbearing (59) which is likewise formed by a toroidal surface, and in which the two bearing surfaces (63, 64), formed in each case by a toroidal surface, of the pressure roller (29) give freedom of movement for matching the axial direction of the pressure roller (29) with the axial direction of the tape-drive shaft (33), and in which the two bearing surfaces (63, 64) are held lying against one another without play, and in which of these two bearing surfaces (63, 64) at least one bearing surface (63;
A pressure-roller unit (66) for a magnetic-tape apparatus (1) having a tape-drive shaft (33) which can be driven in a rotating fashion to drive a magnetic tape (12), which magnetic tape (12) can be pressed against the tape-drive shaft (33) with the aid of a pressure roller (29) of the pressure-roller unit (66), which pressure-roller unit (66) has a pressure roller (29) and a pressure-roller spindle (55) and a bearing part (60) which surrounds the pressure-roller spindle (55) and can be rotated relative to the pressure-roller spindle (55), for rotatably bearing the pressure roller (29), in which the bearing part (60) has a first bearing surface (63) which is formed by a toroidal surface, and in which the first bearing surface (63) of the bearing part (60) is operationally connected to a second bearing surface (64) of a counterbearing (59) which is likewise formed by a toroidal surface, and in which the two bearing surfaces (63, 64), formed in each case by a toroidal surface, of the pressure roller (29) give freedom of movement for matching the axial direction of the pressure roller (29) with a desired direction, and in which the two bearing surfaces (63, 64) are held lying against one another without play, and in which of these two bearing surfaces (63, 64) at least one bearing surface (63;
Dependencies are inferred from the claim text.