U.S. Philips Corporation

Kurt Eisemann

Jurgen Montag

In a disc player, such as for a rigid disc, a compartment slides on the inside of the lid between an outer position in which a disc may easily be inserted or removed, and a position in which, when the lid is closed, the disc is on a turntable. A lever, pivotally connected to the chassis and a sliding compartment in the lid, and an arm extending from the lid, are interconnected by a spring whose biasing force holds the lid in the open position.

Disc player

The invention relates to a disc player for a rigid information-carrying disc, which player has a disc holder on which the disc rotates during information transfer, the disc holder comprising a turntable and a centering device, which device comprises a plurality of centering elements which are arranged along a circle, which are each resiliently movable in a radial direction in order to keep the disc centered during rotation by means of the centering elements which act on the wall of the center hole in the disc. A lid which is movable from an open to a closed position in two stages carries a disc loader and is coupled to lifting means. After the disc loader has resiliently urged the disc onto the centering device and the turntable in a first stage, the lifting means lift the lid in a second stage until the disc loader is clear of the disc which is clamped on the centering device. The resilient centering elements firmly retain the disc on the turntable as a result of their radial elastic deflection.

Disc player for a rigid information-carrying disc

The invention relates to a disc player for a rigid information-carrying disc, which player comprises a turntable which is mounted for rotation on a chassis. The disc player comprises a pivotal lid for closing the player, which lid carries an annular disc loader which when the lid is pivoted towards the turntable urges the disc resiliently against the turntable. The lid is closed in two stages. In a first, loading stage in which the lid is pivoted towards the turntable and in a consecutive lifting stage, the lid is resiliently pivoted away from the turntable towards a final position, in which final position the disc loader is clear of the disc. The lid is positioned by stop means, and a return of the lid to the loading stage is inhibited by a latch.

A braking apparatus for the cover of a chamber in a recording and/or reproducing apparatus includes a stationary plate, a shaft connected to the plate and extending in a direction perpendicular therefrom, an actuating disc arranged on the shaft for rotation in a clockwise and a counterclockwise direction, a damping disc rotatably arranged on the shaft between the plate and the actuating disc, means for urging the discs simultaneously toward the plate and a silicone grease provided between the plate and the damping disc. The grease contacts both the plate and the damping disc. The braking apparatus further includes means for uniting the discs and providing simultaneous unidirectional damped rotation by the discs only when the actuating disc is rotated in the counterclockwise direction.

Braking device for the cover of a chamber in a recording and/or

A reproducing apparatus for information-carrying records, which apparatus comprises:

Front loading record player

In a record player an overload coupling is arranged between a command disk and a pick-up arm controlled by the disk. The coupling comprises two coupling members which are pivotable relative to each other out of a neutral position about an axis, which members each comprise a guide which is concentrically curved around the axis. Viewed parallel to the axis, the guides coincide in the neutral position. A continuous helical spring, whose ends bear against end portions of the guides in the neutral position, is slid over the guides.

Record player

A device for capturing a screw or nut loosely in a recess in a plastic part. The recess has inward ridges extending longitudinally from a ring-positioning rim. A retaining ring, having indentations corresponding to the ridges, is rotated to cut through and be held securely by the ridges.

Device for captively retaining a threaded member

A pick-up arm guiding mechanism for an automatic record player having a command disc with pin-guiding concentric grooves for a sensor pin which is connected to the pick-up arm, each groove corresponding to a specific record size, the pin being directed into the desired groove by a mechanical catching means. During the rotation of the command disc in a changing cycle the pin engages a diversion groove which directs the pin toward the disc center, and the pin is forced out of the groove when the inward movement is blocked by a stop disposed such that the pin engages with the selected pin-guiding groove.

Growing community of inventors

Berlin, Germany

Kurt Eisemann