U.S. Philips Corporation

Petrus J Aarts

Harald Fleck

Karl Kocsisek

Peter J Janssen

Cornelis Versluijs

Pieter D Schuitmaker

Franz Beitler

Ernst M Schmidt

Franz Werner

Hendrik C Wardenaar

A stationary guide plate (11) is formed with two locally intersecting profiled grooves (12, 13), which are profiled in conformity with a kinked path having a first and a second path section which are inclined relative to each other and of which a first groove (12) has a smaller width and a greater depth than a second groove (13). The profiled grooves (12, 13) are engaged by guide members (14, 15) which are connected to the object carrier (22) so as to be movable in the profiled grooves, and which have a transverse dimension corresponding at least substantially to the width of the respective profiled grooves.

Guide arrangement for guiding an object along a kinked path

A symmetrical mounting arrangement for a detachable head drum of a helical scan tape recorder in which a deformable sleeve extends from the drum along the drive spindle with a small clearance, and a clamping ring surrounding the sleeve exerts pressure uniformly to clamp the spindle and accurately center the drum on the spindle.

Mounting for a head drum of a helical scan recorder

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.

Head-drum mounting for a helical scan tape recorder

A helical scan tape recorder having a head support accommodating one or more magnetic heads mounted on a drive spindle. The head support is centered relative to the axis of rotation of the drive spindle by a diaphragm made of a thin elastic sheet material clamped to the head support. A central opening of the diaphragm is pressed over the drive spindle without play, portions of the centering diaphragm being subjected to a limited elastic bending deformation.

Apparatus for magnetically recording and reading wide-band signals

A magnetic tape cassette of the 'flip-over' type having side-by-side reels in a housing between two parallel main walls, an exposed run of tape along a front of the cassette housing, and a pivoting cover for the exposed run of tape. A single cassette cover covers the entire front of the housing, and has a pivoting arm at each side which is journalled to the cassette housing sidewalls such that the cover can be opened from its closed position in either direction to two different open positions, by pivoting toward the one or toward the other main wall of the housing. A movable slide may also cover openings which provide access behind the stretch of tape.

Magnetic tape cassette with pivoting cover

Circuit arrangement for stabilising the speed of a d.c. motor which is controlled via a control amplifier, and drives a tacho-meter which is connected between the bases of a 'long-tailed pair,' a tuned circuit being included between the collectors which is tuned to the tacho frequency and which attenuates the other frequencies, the voltage across the tuned circuit being applied to the control amplifier via a charge pump.

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Eindhoven, Netherlands

Petrus J Aarts