Abstract: A peristaltic pump includes a housing in which a tube mounting case is formed in which a pump head is rotatably supported. The pump includes a tube unit provided as a replacement part consisting of a flexible tube and a tube fixture which holds the tube at two positions. The tube unit is insertible in the tube mounting case so that by displacing the tube fixture, the tube enters into tensioning engagement with the pump head. A tensioning device is arranged on the housing or on the tube mounting case in the form of a lever mechanism for tensioning displacement of the tube fixture by at least one lever element. A locking or clamping mechanism forms an undercut which upon reaching a tube tensioning position engages in a counter-locking/clamping mechanism arranged on the tube fixture for locking the tube fixture and the tensioning device in the tube tensioning position.

Abstract: A housing for an electric or electronic apparatus includes an access hood, or access lid which can be fixed on the housing for closing the housing or a housing opening by a locking mechanism operable from outside the housing. The locking mechanism includes at least one lock/slide held on the housing or on the access hood/access lid so as to be longitudinally displaceable and is provided with a ramp and an undercut or detent lug spaced therefrom. The access hood/access lid or the housing is provided with at least one protrusion which is formed and/or arranged for defining two engagement means in such a manner that depending on the current sliding position of the lock/slide, it alternately comes into operative engagement with the associated detent lug for pulling the access hood/access lid toward the housing, or with the ramp for pushing it away from the housing.

Abstract: A housing for an electric or electronic apparatus includes an access hood, or access lid which can be fixed on the housing for closing the housing or a housing opening by a locking mechanism operable from outside the housing. The locking mechanism includes at least one lock/slide held on the housing or on the access hood/access lid so as to be longitudinally displaceable and is provided with a ramp and an undercut or detent lug spaced therefrom. The access hood/access lid or the housing is provided with at least one protrusion which is formed and/or arranged for defining two engagement means in such a manner that depending on the current sliding position of the lock/slide, it alternately comes into operative engagement with the associated detent lug for pulling the access hood/access lid toward the housing, or with the ramp for pushing it away from the housing.

Abstract: A housing for accommodating electric and electronic components is EMC safe in the manner of a Faraday cage. At least one accommodating chamber, open toward the outside of the housing and otherwise substantially closed to all sides, is formed in at least one outer wall of the housing. At least one non EMC safe transmitter in the form of a non EMC safe transmitting or receiving device is adapted to provide wireless communication between housing side control electronics and an external control device. A functional component is adapted to be controlled by the housing side control electronics. The transmitter may be an antenna, the arrangement thereof inside the accommodating chamber ensuring that it is located outside the EMC protection or shielding. The functional component can be a peristaltic-type pump that is protected by the arrangement inside the accommodating chamber and does not protrude from the housing.

Abstract: A peristaltic pump includes a housing in which a tube mounting case is formed in which a pump head is rotatably supported. The pump includes a tube unit provided as a replacement part consisting of a flexible tube and a tube fixture which holds the tube at two positions. The tube unit is insertible in the tube mounting case so that by displacing the tube fixture, the tube enters into tensioning engagement with the pump head. A tensioning device is arranged on the housing or on the tube mounting case in the form of a lever mechanism for tensioning displacement of the tube fixture by at least one lever element. A locking or clamping mechanism forms an undercut which upon reaching a tube tensioning position engages in a counter-locking/clamping mechanism arranged on the tube fixture for locking the tube fixture and the tensioning device in the tube tensioning position.

Abstract: A peristaltic pump for medical purposes includes a pump casing in which a tube accommodation chamber is formed. In one embodiment, a pump head is rotatably mounted in the tube accommodation chamber. A tube unit is adapted to be inserted in the tube accommodation chamber such that a tube of the tube unit is engaged with the pump head in a manner to at least partially encompass the pump head. For this purpose, a tensioning device is arranged at the pump casing. The tensioning device cooperates with the tube unit so as to tension the tube around the pump head. The tensioning device may include a lever mechanism, wherein a lever element of the lever mechanism simultaneously forms or comprises a protective cap for at least partially covering the tube accommodation.