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US 4,395,745 AGranted
Head-drum mounting for a helical scan tape recorder
AssigneeU.S. Philips Corporation
InventorsPetrus J. J. Aarts, Harald Fleck, Karl Kocsisek, Ernst M. Schmidt
Life of this patent
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Abstract
The head-drum rotary system of a helical scan video recorder is centered on the drive spindle without tilting, by elastic deformation of two wall portions which serve as centering devices. At least one of the centering devices may also function as a clamping element for holding the head-drum system on the spindle.
Claims17
An apparatus for magnetically recording and reading wide-band signals on a magnetic tape in signal tracks which extend obliquely on the tape adjacent each other, comprising:
- (a) an at least partly cylindrical drive spindle having a free end, rotatable about an axis of rotation,
- (b) a head-drum system detachably secured to a cylindrical portion of the drive spindle near its free end, having a first side adjacent said free end, a second side remote from said free end, a central bore for mounting the head-drum system on the drive spindle, and comprising at least one magnetic head rotatable in a circular path about said axis of rotation, and
- (c) a first centering device on the first side of the head-drum system, comprising a first electrically deformable wall portion on the first side of the head-drum system, which wall portion engages the drive spindle for centering the head-drum system, characterized in that
- the head-drum system further comprises a second centering device spaced axially from the first centering device, said second centering device comprising a second elastically deformable wall portion which engages the drive spindle and is disposed on the second side of the head-drum system.
1 more element
Dependencies are inferred from the claim text.