Abstract: The safety device includes a tubular body configured to receive a barrel, a head arrangement configured to abut against the flange and to lock into a flange, at least two actuation arms connecting the tubular body and the head arrangement, said actuation arms having a proximal link connected to the head arrangement by a proximal hinge and a distal link connected to the tubular body by a distal hinge. The proximal link and the distal link are connected by an intermediate hinge. The actuation arm is movable between a collapsed position in which the tubular body is maintained in a position proximally close to the flange uncovering the needle and an extended position in which the tubular body is maintained in a position distally distant from the head arrangement shielding the needle; a locking means for maintaining the actuation arms in a collapsed position and a locking means for maintaining the actuation arms in an extended position.

Abstract: The safety device includes a tubular body extending along a longitudinal axis (A), the tubular body being configured to receive the barrel, an annular head configured to abut against the flange; one actuation arm connecting the tubular body and the annular head, the actuation arm being movable by a user between a collapsed position in which the tubular body is maintained by the actuation arm in a position proximally close to the flange uncovering the needle and an extended position in which the tubular body is maintained in a position distally distant from the flange shielding the needle; one finger resting arrangement connected to the annular head; a locking means for maintaining the actuation arm in a collapsed position and a locking means for maintaining the actuation arm in an extended position.

Abstract: An adapter (1) for use in a dedicated coupling system (2) for releasably coupling an air filter cartridge (20) and a housing (36) of a dedicated air filter assembly (34), the adapter (1) comprising: a first surface area (4) being rotatably coupleable with a housing-side coupling element (6) of the coupling system (2), and a second surface area (8) preferably being non-rotatably coupleable. Cartridges, components, features and methods are described.

Abstract: An optical velocimeter probe a device to illuminate a volume of measurement in which there may pass particles, and an optical detector to produce an electrical signal x(t) in response to the passage of a particle in the illuminated volume. It also includes a device to extract information representing the velocity v of particles from the electrical signal, including, in particular, a device to convert the electrical signal x(t) into a complex signal .sub.x (t), an apparatus to set up a self-correlation function r.sub.x (m) of the signal x(t), and a device to estimate the velocity v from the computation of the phase .phi..sub.x (m) of the function r.sub.x (m).

Abstract: An optical velocimetrical probe comprises means to illuminate a volume of measurement in which particles may pass, and optical detection means to produce an electrical signal x(t) in response to the passage of a particle in the illuminated volume. It also comprises means to extract information representing the velocity v of particles from the electrical signal, these means comprising,in particular, means to compute the density of probability p(x,.theta.) of the signal vector x(t), means to determine a frequency representing the velocity v for which this probability is the maximum.