1. An overhead throwing sweeping machine comprising a machine frame (1) for retaining the wheels (2), whose regions coming to bear on the floor to be cleaned lie in a supporting plane, and the other components of the sweeping machine,
a cylindrical sweeping roller (4) which is rotatable about its longitudinal axis and is retained on jointly adjustable pivoted arms and whose bristles located in the region of the sweeping area during cleaning operation move in the direction of the forward travel of the cleaning machine,
a tunnel wall (8) covering the front and the top region of the sweeping roller (4) and defining the brush tunnel, and
a dirt container (6) which is arranged behind the sweeping roller (4) and whose inlet opening faces the end of the brush tunnel and lies with its bottom edge (15) adjacent to the sweeping roller (4) and which, in its dirt-receiving position, is held by at least one displaceable supporting element (36) in a position supported relative to the sweeping roller (4),
wherein, to set the sweeping area, the pivoted arms of the sweeping roller (4) are pivoted by adjusting a cable control (20) and in the process the position of the at least one supporting element (36) is also changed, such that the setting of the sweeping area is combined with the setting of the optimum distance between sweeping roller (4) and tunnel wall (8) and with the setting of the optimum distance of the inlet opening of the dirt container (6) from the sweeping roller (4), characterized in that one of the pivoted arms of the sweeping roller (4) is a double-armed lever which, at its arm (7) remote from the longitudinal axis (4\u2032) of the sweeping roller (4), has a bearing surface (11) for the cable control (20), the one end of which is held in place when the sweeping roller (4) is lowered into the sweeping position and the other end of which is connected to an adjusting mechanism, such that the cable control (20) holds the pivoted arms in the position for the sweeping position of the sweeping roller (4) by engagement with the bearing surface (11), and
in that the at least one supporting element (36) is coupled to the adjusting mechanism, such that the adjustment of the latter both changes the effective length of the cable control (20) and correspondingly displaces the at least one supporting element (36).
2. An overhead throwing sweeping machine according to claim 1, characterized in that the cable control is a Bowden control (20, 21), the sleeve sections (21\u2032) of which are fixedly arranged close to the bearing surface (11) relative to the cable (20).
3. An overhead throwing sweeping machine according to claim 1 characterized in that the adjusting mechanism has a screw spindle (26) which is retained in a rotatable but axially non-displaceable manner and on which an adjusting nut (27) sits which is non-rotatable relative to the machine frame (1), and in that the cable control (20) is fixedly connected to the adjusting nut (27) sits which is non-rotatable relative to the machine frame (1), and in that the cable control (20) is fixedly connected to the adjusting nut (27) and a linkage (29, 34) is coupled to the latter for displacing the at least one supporting element (36).
4. An overhead throwing sweeping machine according to claim 3, characterized in that the screw spindle (26) is arranged essentially perpendicularly to the supporting plane.
5. An overhead throwing sweeping machine according to claim 4, characterized in that a handle element (26\u2032) for the manual rotation of the screw spindle (26) is provided at one end of the screw spindle (26).
6. An overhead throwing sweeping machine according to one of claims 3, characterized in that the at least one supporting element (36) has a curved supporting surface and is retained on the machine frame in a pivotable manner, and in that a push rod (34) acts on the at least one supporting element (36) and is coupled to the adjusting nut (27) via a pivoted lever (29).
7. An overhead throwing sweeping machine according to claim 6, characterized in that the at least one supporting element (36) is provided at a side region of the machine frame (1), and in that a further supporting element (37) rigidly coupled to said supporting element (36) and having a corresponding surface is arranged at the opposite side region of the machine frame (1).
8. An overhead throwing sweeping machine according to claim 1, characterized in that the one end of the cable control (20) is coupled to an actuating element (40), with which the cable control (20) can be adjusted between a position for sweeping operation and a position for travel operation, in which the sweeping roller (4), is lifted from the floor.
9. An overhead throwing sweeping machine according to claim 3, characterized in that the one end of the cable control (20) is coupled to an actuating element (40), with which the cable control (20) can be adjusted between a position for sweeping operation and a position for travel operation, in which the sweeping roller (4), is lifted from the floor.
10. An overhead throwing sweeping machine according to claim 6, characterized in that the one end of the cable control (20) is coupled to an actuating element (40), with which the cable control (20) can be adjusted between a position for sweeping operation and a position for travel operation, in which the sweeping roller (4), is lifted from the floor.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of obtaining the electrocardiograph (ECG) of a patient located in a turbulent electromagnetic environment, consisting of recovering an ECG signal from the patient with added noise near the cardiac region as the differential signal resulting from the signals delivered by two electrodes forming part of a first measurement loop, characterized in that it further consists of simultaneously recovering from the patient (1) in essentially identical turbulent conditions, a second measurement signal (S2) incorporating at least the noise, as a differential signal resulting from the signals delivered by two electrodes (5, 5) forming part of a second measurement loop (4) distinct from the first (2), then adding to or subtracting from the first noisy ECG signal (S1), in real time, said second measurement signal (S2) as a function of the polarity of the noise in said second signal relative to the noise in the noisy ECG signal (S1) and, finally, processing, converting, transmitting andor displaying in real time the resulting signal (SR) representing the ECG, which is essentially devoid of noise.
2. A method of acquisition according to claim 1 characterized in that the second measurement loop (4) is composed and arranged in such a way that, if it acquires a signal component representing the ECG that is in addition to or mixed with the noise signal, said signal component representing the ECG has an opposite polarity andor an inferior amplitude to the signal component representing the ECG obtained by the first measurement loop (2).
3. A method of acquisition according to either claim 1 or claim 2 characterized in that, in the case where a patient (1) is located inside a nuclear magnetic resonance imager or similar MRI analysis apparatus, the apparent dimensions for magnetic flux, in a plane (PP) perpendicular to the direction of the principal field (Bo) of the first and second measurement loops (2 and 4) formed by the connecting wires (2 and 4) of the respective electrodes (3, 3; 5, 5) and the materials (2, 4) extending between the two electrodes (3, 3 5, 5) of a single measurement loop (2; 4) are similar or even identical.
4. A method of acquisition according to any one of claims 1 through 3 characterized in that the first and second measurement loops (2 and 4) comprise a common electrode (3, 5).
5. A method of acquisition according to any one of claims 1 through 4 characterized in that the first and second measurement loops (2 and 4) passing through the electrodes are arranged essentially symmetrically relative to the median plane (PM) of the patient (1) perpendicular to the patient’s coronal plane (PC).
6. A method of acquisition according to claim 5 characterized in that the electrodes (3, 3; 5, 5), either separate or with a common electrode, of the two measurement loops (2 and 4) are arranged in alignment.
7. A method of acquisition according to any one of claims 1 through 4 characterized in that the three electrodes (3, 3; 5, 5) forming the two measurement loops (2 and 4) are arranged in a triangular configuration near the cardiac region in such a way that that the second measurement loop (4) obtains a signal component representing the ECG which has the opposite polarity and is essentially equal in amplitude to that of the signal component representing the ECG obtained by the first measurement loop (2).
8. A method of acquisition according to any one of claims 1 through 7 characterized in that the signal (SR) resulting from the addition or subtraction of the differential signals (S1 and S2) delivered by the two measurement loops (2 and 4) is processed by a pass-through filter (8), then used for frequency modulation of a carrier and finally, transmitted to an apparatus (11) equipped with a means for displaying the filtered ECG signal (SR), possibly after conversion into an optical signal.
9. A sampling apparatus for obtaining the ECG signal of a patient in real time, particularly a patient undergoing MRI examination, which apparatus can be connected to a display device; and in particular, an apparatus using the method according to any one of claims 1 through 8, characterized in that it consists principally of first, two modules (6, 6) for acquiring physiological signals (S1 and S2) furnished by two separate measurement loops (2 and 4), each comprising a pair or electrodes (3, 3; 5, 5) placed on the patient (1), at least one of said physiological signals (S1, S2) comprising a signal component representing the ECG; and second, of a module (7) which totals or differentiates the signals (S1 and S2) delivered by the two acquisition modules (6, 6) and finally, by the modules (8, 9, 10) which process, i.e., filter and convert, the signal (SR) delivered by said totaling or differentiating module (7).
10. A device according to claim 9 characterized in that all the modules (6, 6, 7, 8, 9, 10) are grouped within a protected housing (12) forming a Faraday cage which is connected to the electrodes (3, 3; 5, 5) by resistant, flexible connection wires (2, 4) and which is not in direct contact with the patient’s skin.
11. A device according to either of claims 9 and 10 characterized in that the two acquisition modules (6, 6) comprise a common electrode (3, 5).
12. A device according to any one of claims 9 through 11 characterized in that the different elements and portions forming said device consist essentially of non-magnetic materials, making it completely compatible for use in a magnetically sensitive, turbulent environment.