Abstract: A cold head for cryogenic machines comprises a displacer mounted in a working chamber of a housing. The cold head also has a high-pressure connection for supplying highly compressed refrigerant and a low-pressure connection for discharging expanded refrigerant. Also provided is a control valve arrangement for controlling the supply and discharge of refrigerant. According to the invention there is a bypass channel connecting the high-pressure connection to the low-pressure connection.

Abstract: A turbomolecular pump has a rotor element in a housing. The rotor element is arranged on a rotor shaft. The rotor shaft is supported by two bearing elements in the housing. The bearing element on the high-vacuum side is constructed as a roller bearing. In order to guarantee a pressure in the area of the bearing element that is acceptable for the bearing element constructed as a roller bearing, the bearing element is arranged in a chamber. The chamber is connected via a channel to the pre-vacuum area and sealed relative to the high-vacuum area by a gasket.

Abstract: A vacuum pump has the outer side of the pump housing provided with retaining elements. These serve to receive at least one mass element. With these mass elements, which are preferably arranged asymmetrically with respect to the longitudinal axis of the vacuum pump, vibrations that occur can be suppressed.

Abstract: A vacuum device comprises a plurality of cryopumps (10) connected with one or a plurality of vacuum chambers. The cryopumps (10) are connected via media supply conduits (12) and media return conduits (14) with a compressor (16). An adjusting device (18) is connected before at least one of the cryopumps for controlling the amount of media fed to the cryopump. Further, the cryopumps (10) comprise a temperature measuring device. The temperature measuring device and the adjusting device (18) are connected with a controller (28). To allow the desired amount of media to be fed to the cryopumps (10), the adjusting device (18) comprises a throttle (24) in a media supply conduit (12) and a controllable valve in a throttle bypass conduit (22).

Abstract: The cutting tool for polyurethane elastomers, which is controllable manually or program-controlled comprising a cutting head (10) with a driving device (20), a blade holder (30) with a cutting knife (35) has at least one cutting head. The driving device has a driving motor (21) with a drive shaft (22) running in cutting head longitudinal axis (L), a cam disk actively connected with the drive shaft (22) of the driving motor (21), driven rotating about the drive shaft longitudinal axis (L2), with control surfaces (40, 41) configured on the side (25a) opposed to the driving motor (21) and lying in different planes, a roller (26) actively connected with one of the control surfaces (40. 41) of the cam disk (25), a lifting rod or tappet push rod (45) actuated by means of a spring (27) which is actively connected with the roller (26) and the cam disk (25) over a coupling piece (46) and which carries at its free end (45a) the blade holder (30) for the cutting knife (25).

Abstract: A refrigerator (1) has a housing (2, 14, 19), a cylindrical working chamber (15, 21), a cylindrical displacing member (11, 17), a gap (36, 38) which is located between the housing and the displacing member, a regenerator which is disposed inside the displacing member, and a device alternatingly supplying the working chamber with an effective high-pressure gas and an effective low-pressure gas. In order to overcome the disadvantages associated with gas streams occurring in the gap (36, 38), an additional regenerator (gap gas regenerator), (43) is assigned to the gap (36, 38).

Abstract: A vacuum device comprises a plurality of cryopumps (10) connected with one or a plurality of vacuum chambers. The cryopumps (10) are connected via media supply conduits (12) and media return conduits (14) with a compressor (16). An adjusting device (18) is connected before at least one of the cryopumps for controlling the amount of media fed to the cryopump. Further, the cryopumps (10) comprise a temperature measuring device. The temperature measuring device and the adjusting device (18) are connected with a controller (28). To allow the desired amount of media to be fed to the cryopumps (10), the adjusting device (18) comprises a throttle (24) in a media supply conduit (12) and a controllable valve in a throttle bypass conduit (22).

Abstract: A vacuum device comprises a plurality of cryopumps (10), particularly a plurality of cryopumps connected in parallel. Further, at least one compressor device (16) is provided which is connected to the cryopumps (10) via medium supply conduits (12). A medium return conduit (14) is also connected to the compressor device (16) and the cryopumps (10). Arranged between the medium supply conduit (12) and the medium return conduit (14) is a storage container (20) for medium. Further, a pressure measurement device (30) is provided in the medium supply conduit (12). The pressure measurement device (30) is connected, via a control unit (32), to a supply valve (26). To keep the pressure difference at the cryopumps (10) as constant as possible, the supply valve (26) is opened when a threshold value of the pressure in the medium supply conduit (12) is exceeded, thus causing medium to flow into the storage container (20).

Abstract: A refrigerator (1) has a housing (2, 14, 19), a cylindrical working chamber (15, 21), a cylindrical displacing member (11, 17), a gap (36, 38) which is located between the housing and the displacing member, a regenerator which is disposed inside the displacing member, and a device alternatingly supplying the working chamber with an effective high-pressure gas and an effective low-pressure gas. In order to overcome the disadvantages associated with gas streams occurring in the gap (36, 38), an additional regenerator (gap gas regenerator), (43) is assigned to the gap (36, 38).

Abstract: The cutting tool for materials, in particular made of polyurethane elastomers, which is controllable manually or program-controlled comprising a cutting head (10) with a driving device (20), a blade holder (30) with a cutting knife (35) has at least one cutting head, whereby the driving device (20) is configured in a way known in itself or consists of a driving motor (21) with a drive shaft (22) running in cutting head longitudinal axis (L), a cam disk actively connected with the drive shaft (22) of the driving motor (21), driven rotating about the drive shaft longitudinal axis (L2), with control surfaces (40, 41) configured on the side (25a) opposed to the driving motor (21) and lying in different planes, a roller (26) actively connected with one of the control surfaces (40.

Abstract: The cutting tool for materials, in particular made of polyurethane elastomers, which is controllable manually or program-controlled; comprising a cutting head (10) with a driving device (20), a blade holder (30) with a cutting knife (35) has at least one cutting head, whereby the driving device (20) is configured in a way known in itself or consists of a driving motor (21) with a drive shaft (22) running in cutting head longitudinal axis (L), a cam disk actively connected with the drive shaft (22) of the driving motor (21), driven rotating about the drive shaft longitudinal axis (L2), with control surfaces (40, 41) configured on the side (25a) opposed to the driving motor (21) and lying in different planes, a roller (26) actively connected with one of the control surfaces (40.

Abstract: The cutting tool for materials, in particular made of polyurethane elastomers, which is controllable manually or program-controlled, comprising a cutting head (10) with a driving device (20), a blade holder (30) with a cutting knife (35) has at least one cutting head, whereby the driving device (20) is configured in a way known in itself or consists of a driving motor (21) with a drive shaft (22) running in cutting head longitudinal axis (L), a cam disk actively connected with the drive shaft (22) of the driving motor (21), driven rotating about the drive shaft longitudinal axis (L2), with control surfaces (40, 41) configured on the side (25a) opposed to the driving motor (21) and lying in different planes, a roller (26) actively connected with one of the control surfaces (40.

Abstract: A connector position assurance system is provided for an electrical connector adapted to mate with another mateable connecting device. The connector includes a housing, and a primary locking arm is mounted on the housing for movement between a first position when the connector is fully mated with the mateable connecting device and second position of incomplete mating of the connector with the device. The primary locking arm includes a latch for mechanically interlocking with a cooperating latch of the mateable connecting device. A locking slider is mounted in a recessed area of the housing so as to be shrouded by the housing. The slider is slidable between a first position allowing movement of the locking arm and mating of the connector and the device, and a second position blocking movement of the locking arm from its first position with the connector and the device fully mated.

Abstract: A method and an apparatus for conveying and synchronizing the movement of articles. Two conveyor belts are thereby provided. A synchronizing device is arranged between the conveyor belts. The phase relationship of the individual articles and the speed of a receiving belt can be adjusted with the help of the synchronizing device. To facilitate the adjusting of the position of the articles and to make such adjusting more precise, the invention provides that the first and the second conveyor belt are moved at a faster speed than the receiving belt.