Abstract: A chuck for optical components for fine grinding and/or polishing, has a plurality of supporting elements (9) of elastic material for the components and an arrangement for feeding or discharging air relative to the rear side of each supporting element. The chuck has a basic body (1) with a spindle shank (2) having a central bore (3) and a cover part (6) for accommodating the supporting elements. The basic body (1) is designed in a pot shape (5) with an encircling rim (4), and the cover part (6), provided with a flat base area, is put onto the rim (4) in an airtight manner. The cover top side (15) has cylindrical recesses (8) which lie symmetrically to the axis (17) of the spindle shank (2) and are designed for the insertion of the elastic supporting elements (9). Each of the recesses (8) is fluidly connected to the common pot space (5) of the basic body (1) via at least one bore (13).

Abstract: A separator for solid particles entrained in a gas flow formed of a cold air current discharging from an expansion turbine, the separator having a collection vessel disposed in and perpendicular to the air current and including a dome-type cover disposable above and connectible to the collection vessel, a feed line having a downwardly widening funnel-type end extending into the cover, and an outlet pipe tangentially connected to the cover in an upper region thereof, the funnel-type end of the feed line having an edge disposed at a location lower than that of the outlet pipe.

Abstract: A refrigeration apparatus includes a cooling chamber having a given useful space therein, and a cold generator having a cold air loop connected to the cooling chamber for cooling the given useful space, the cold air loop including a compressing device, a heat exchanger disposed downstream of the compressing device and exposed to the ambient air for cooling air drawn from the useful space with a relatively high temperature level almost to the temperature of the ambient air after compression, cooling device downstream of the heat exchanger, an expansion device downstream of the cooling device, the air being returned to the useful space after subsequent expansion and corresponding cooling below the lowest temperature level, and an additional heat exchanger for dehumidifying the circulated air current in the loop, the additional heat exchanger including heat exchanger surfaces, air drawn from the cooling chamber being dried from the upper temperature level with the aid of expanded cold air by the of condensation

Abstract: Continuously operating adsorption refrigeration plant, comprising a gas-tight housing having at least one expeller chamber and at least one adsorption chamber disposed therein sequentially following each other in a close loop, sealing gates disposed between the chambers for preventing an uninhibited exchange of gaseous coolant between the chambers, an endless structure disposed in the housing including carriers for solid adsorbent of a coolant and connection members spacing the carriers apart from each other, the carriers being movable one after the other through the chambers of the housing.

Abstract: In a housing, a clothes dryer wherein dampness in washed clothes is expelled by warm air sweeping therethrough, the air being drawn in at least partly from the environment through openings formed in the housing and heated and, after absorbing the dampness, exhausted at least partly back into the environment, the air drawn in from the environment and exhausted to the environment being conducted through two channels of a heat exchanger with a solid-body regenerator alternatingly contacted in part by the drawn-in air and the exhausted air, the improvement therein including non-hygroscopic storage material received in the regenerator and absorbing thermal energy as loss-free as possible, storing the absorbed thermal energy as loss-free as possible and subsequently surrendering the thermal energy as loss-free as possible, the regenerator being air-permeable in axial direction thereof and being mounted in the drawn-in and exhausted air channels for rotation in a manner that every region of the regenerator is altern

Abstract: A refrigerator has a low-temperature cooling compartment and a higher-temperature cooling compartment, and is provided with a cooling system comprised of a cooling-medium flow circuit. The flow circuit includes a compressor, a condenser downstream of the compressor, a flow restrictor downstream of the condenser, a first evaporator section downstream of the flow restrictor and operative for cooling the lower-temperature compartment, and a second evaporator section downstream of the first evaporator section and operative for cooling the higher-temperature compartment. An accumulator communicates with the flow circuit upstream of the flow restrictor. A heater is provided for heating liquid cooling medium in the accumulator to cause evaporation of part of such liquid cooling medium and concomitant pushing of the liquid remainder of the liquid cooling medium in the accumulator out of the accumulator and into the second evaporator section.