U.S. Philips Corporation

Duphar International Research Bv

Ernst M Schmidt

Harald Fleck

Petrus J Aarts

Hendrik M Bekkering

Willem Van Benthem

Karl Kocsisek

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 disposable injection syringe having a very small volume of unusable injection liquid. The liquid container has a constant diameter over its entire length so that the plunger can move at least all the way to the needle connection end of the container.

Disposable injection syringe

The invention relates to a low-pressure sodium vapor discharge lamp provided with a U-shaped discharge tube which is enveloped by an outer bulb. The bend of that discharge tube is supported by means of a metal element relative to the outer bulb. In accordance with the invention the bend of the discharge tube is partly passed through a hole in the metal element and bears against two fingers which are part of the metal element.

Gas and/or vapor discharge lamp

A flash lamp unit which comprises at least two rows of flash lamps pointing in opposite directions. In one form the flash lamps are covered by a common cap of a transparent material and two or more strips of an opaque material secured to said cap. Each strip covers one row of flash lamps and is removable from the unit independently of the other.

Flash lamp unit

A flashlamp unit which comprises at least one row of percussion flashlamps disposed on an elongate base plate with striker springs which are locked in the prestressed condition. The unit also includes at least one elongate body extending and movable in the longitudinal direction of the base plate. The body has a plurality of projections, each cooperating with one striker spring for unlocking.

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Eindhoven, Netherlands

Ernst M Schmidt