All The Claims

1. A syringe pump having a lead screw with a drive device in threaded engagement with the lead screw, the drive device moving along the lead screw in response to rotation of the lead screw, and a drive head adapted to drive a syringe plunger into the barrel of a syringe to expel fluid contents of the syringe, the syringe pump comprising:
a lead screw having a first end and a second end with the first end mounted to a frame, the second end of the lead screw comprises a bearing mount having outwardly diverging bearing surfaces;
a connection tube located over the lead screw and connected between the drive device and the drive head to communicate movement of the drive device along the lead screw to the drive head, the connection tube having a hollow portion with an inner surface;
wherein the second end of the lead screw is located within the hollow portion of the connection tube but is otherwise unmounted; and
a bearing located at the bearing mount in contact with the inner surface of the hollow portion of the connection tube thereby creating a guided cantilever mount of the second end of the lead screw within the connection tube.
2. The syringe pump of claim 1 wherein:
the bearing engaging one or the other of the diverging bearing surfaces in response to movement of the connection tube over the bearing in a particular direction.
3. The syringe pump of claim 2 wherein the outwardly diverging bearing surfaces of the bearing mount diverge outwardly in axial directions from a bearing surface center location, the bearing engaging one or the other of the diverging bearing surfaces depending upon the direction of movement of the connection tube over the bearing.
4. The syringe pump of claim 2 wherein the bearing mount has a generally hourglass shape.
5. The syringe pump of claim 2 wherein the bearing has inner tapered surfaces for engaging the diverging bearing surfaces of the bearing mount.
6. The syringe pump of claim 1 wherein the bearing is biased outwardly into continuous contact with the inner surface of the connection tube.
7. The syringe pump of claim 6 wherein
the bearing engaging one or the other of the diverging surfaces in response to movement of the connection tube over the bearing in a particular direction; and
the bearing has an inner surface that is shaped in an approximate complementary shape to the diverging bearing surfaces;
whereby the bearing locates the second end of the lead screw in the approximate center of the connection tube.
8. The syringe pump of claim 2 wherein:
the bearing and bearing surfaces of the bearing mount are made of materials selected such that the bearing easily slides along the bearing surfaces;
whereby the bearing moves up one or the other bearing surfaces to maintain contact between the inner surface of the connection tube and the respective bearing surface to more accurately center the second end of the lead screw in the connection tube.
9. The syringe pump of claim 8 wherein the bearing mount has a generally hourglass shape.
10. The syringe pump of claim 8 wherein the bearing has inner tapered surfaces for engaging the diverging bearing surfaces of the bearing mount.
11. The syringe pump of claim 1 wherein the bearing has a larger outer diameter than the inner diameter of the hollow portion of the connection tube within which it is mounted, the bearing having a discontinuity that permits the bearing to compress to thereby be mounted within the connection tube.
12. The syringe pump of claim 11 wherein the bearing has a notch formed in an outer surface so that the bearing will bend at a desired location.
13. The syringe pump of claim 11 wherein the bearing has a plurality of notches formed in the outer surface of the bearing so that the bearing will bend at desired locations to provide a more uniform force against both the bearing surfaces and the inner surface of the connection tube to more accurately locate the second end of the lead screw within the connection tube.
14. A syringe pump having a lead screw with a drive device in threaded engagement with the lead screw, the drive device moving along the lead screw in response to rotation of the lead screw, and a drive head adapted to drive a syringe plunger into the barrel of a syringe to expel fluid contents of the syringe, the syringe pump comprising:
a lead screw having a first end and a second end with the first end mounted to a frame;
a connection tube located over the lead screw and connected between the drive device and the drive head to communicate movement of the drive device along the lead screw to the drive head, the connection tube having a hollow portion with an inner surface;
wherein the second end of the lead screw is located within the hollow portion of the connection tube but is otherwise unmounted; and
a bearing located at the second end of the lead screw in contact with the inner surface of the hollow portion of the connection tube thereby creating a guided cantilever mount of the second end of the lead screw within the connection tube;
wherein the bearing has a larger outer diameter than the inner diameter of the hollow portion of the connection tube within which it is mounted, the bearing having a discontinuity that permits the bearing to compress to thereby be mounted within the connection tube.
15. The syringe pump of claim 14 wherein the bearing has a notch formed in an outer surface so that the bearing will bend at a desired location.
16. The syringe pump of claim 14 wherein the bearing has a plurality of notches formed in an outer surface of the bearing so that the bearing will bend at desired locations to provide a more uniform force against both the bearing surfaces and the inner surface of the connection tube to more accurately locate the second end of the lead screw within the connection tube.
17. The syringe pump of claim 14 wherein the outwardly diverging bearing surfaces of the bearing mount diverge outwardly in axial directions from a bearing surface center location, the bearing engaging one or the other of the diverging bearing surfaces depending upon the direction of movement of the connection tube over the bearing.
18. The syringe pump of claim 14 wherein the bearing mount has a generally hourglass shape.
19. The syringe pump of claim 14 wherein the bearing has inner tapered surfaces for engaging the diverging bearing surfaces of the bearing mount.
20. The syringe pump of claim 14 wherein the bearing is biased outwardly into continuous contact with the inner surface of the connection tube.
21. The syringe pump of claim 20 wherein the second end of the lead screw comprises a bearing mount having outwardly diverging bearing surfaces;
the bearing is located at the bearing mount, the bearing engaging one or the other of the diverging surfaces in response to movement of the connection tube over the bearing in a particular direction; and
the bearing has an inner surface that is shaped in an approximate complementary shape to the diverging bearing surfaces;
whereby the bearing locates the second end of the lead screw in the approximate center of the connection tube.
22. A syringe pump having a lead screw, a nut device engaged with the lead screw that moves along the lead screw in response to rotation of the lead screw, and a drive head adapted to drive a syringe plunger into a syringe barrel, the syringe pump comprising:
a hollow connection tube located over the lead screw and connected between the nut device and the drive head such that movement of the nut device along the lead screw is communicated by the connection tube to the drive head, the connection tube having an inner surface;
wherein the lead screw is mounted at a first end to a frame;
wherein a second end of the lead screw is continuously located within the hollow connection tube and comprises a bearing mount having outwardly diverging bearing surfaces; and
a bearing located at the bearing mount, the bearing configured to engage the bearing surfaces of the bearing mount and the inner surface of the connection tube so as to centrally locate the second end of the lead screw in the connection tube during movement of the connection tube along the lead screw.
23. The syringe pump of claim 22 wherein the bearing is biased outwardly into contact with the inner surface of the connection tube and wherein the bearing engages one or the other bearing surface depending on which direction the connection tube is moving over the lead screw.
24. The syringe pump of claim 22 wherein the bearing has a larger outer diameter than an inner diameter of the connection tube within which it is mounted, the bearing having a discontinuity that permits the bearing to compress to thereby be mounted within the connection tube.
25. The syringe pump of claim 22 wherein the bearing has a notch formed in an outer surface so that the bearing will flex at a desired location.
26. The syringe pump of claim 22 wherein the bearing has a plurality of notches formed in the outer surface of the bearing so that the bearing will flex at desired locations.
27. The syringe pump of claim 22 wherein the bearing has inner tapered surfaces for engaging the diverging bearing surfaces of the bearing mount.
28. The syringe pump of claim 22 wherein the outwardly diverging bearing surfaces of the bearing mount diverge outwardly in axial directions from a bearing surface center location, the bearing engaging one or the other of the diverging bearing surfaces depending upon the direction of movement of the connection tube over the bearing.
29. The syringe pump of claim 22 wherein the bearing mount has a generally hourglass shape.
30. The syringe pump of claim 22 wherein:
the bearing has an inner surface that is shaped in an approximate complementary shape to the diverging bearing surfaces;
whereby the bearing locates the second end of the lead screw in the approximate center of the connection tube.
31. A lead screw mounting system for use in a syringe pump having a drive head adapted to drive a syringe plunger into the barrel of a syringe to expel fluid from the barrel, the lead screw mounting system comprising:
a lead screw mounted at a first end to a frame;
a nut device engaged with the lead screw that moves along the lead screw in response to rotation of the lead screw;
a hollow connection tube located over the lead screw and connected between the nut device and the drive head such that movement of the nut device causes movement of the connection tube over the lead screw and causes movement of the drive head, the connection tube having an inner surface;
wherein a second end of the lead screw is continuously located within the hollow of the connection tube;
wherein the second end of the lead screw comprises a bearing mount; and
a bearing located at the bearing mount, the bearing having at least one tapered inner surface engaging the bearing mount and an outer surface engaging the inner surface of the connection tube so as to centrally locate the second end of the lead screw in the connection tube during movement of the connection tube along the lead screw.
32. The lead screw mounting system of claim 31 wherein the bearing is biased outwardly into contact with the inner surface of the connection tube.
33. The lead screw mounting system of claim 31 wherein the bearing mount comprises two diverging mounting surfaces, the bearing engaging one or the other depending upon the direction of movement of the connection tube over the bearing.
34. The syringe pump of claim 31 wherein the bearing includes a bearing surface center location and outwardly diverging bearing surfaces that diverge outwardly in axial directions from the bearing surface center location, the at least one tapered inner surface bearing engaging the diverging bearing surfaces.
35. The syringe pump of claim 31 wherein the bearing has a larger outer diameter than the inner diameter of the hollow portion of the connection tube with which it is engaged, the bearing having a discontinuity that permits the bearing to compress to thereby be mounted within the connection tube.
36. The syringe pump of claim 35 wherein the bearing has a notch formed in the outer surface so that the bearing will bend at a desired location.
37. The syringe pump of claim 35 wherein the bearing has a plurality of notches formed in the outer surface of the bearing so that the bearing will bend at desired locations to provide a more uniform force against both the bearing and the inner surface of the connection tube to more accurately locate the second end of the lead screw within the connection tube.

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 heat sink with high heat transmission is characterized that the entire heat sink thereof is manufactured into various almost net shapes according to the need of the practical application; furthermore, ceramic grains are mixed in a proper ratio into the aluminum alloy of a main body of the entire structure so as to use the special nature of the aluminum alloy to mold the entire heat sink and to enhance the effect of heat dissipation of the heat sink of the same structure through the high heat transmission efficiency of the ceramic grains
2. The present invention of a heat sink with high heat transmission according to claim 1, wherein, the aluminum alloy is composed by freely grouping AlSi, AlSiCu, AlSiZn, AlSiMg, AlSiCuMg, AlGe, AlGeSi, AlCu, AlMn, AlLi, AlSn and AlPb.
3. The present invention of a heat sink with high heat transmission according to claim 1, wherein, the ceramic grains are grains of silicon carbide.
4. The present invention of a heat sink with high heat transmission according to claim 1, wherein, the sizes of grains of silicon carbides are preferred to be between 40-3000 m.
5. The present invention of a heat sink with high heat transmission according to claim 1, wherein, the ceramic grains occupy weight ratio 0.5-80% of the entire heat sink.
6. A structure and manufacture of a heat sink with high heat transmission mainly uses a shear stress caused by stirring to break or crush the solidified arborescent primary crystal at a solidliquid two-phase area of a aluminum alloy to form a slag fluid with ball-filled solid crushed grit; then ceramic grains are added in and dispersed by the solid grains scattered in the liquid-phase metal; through continuous stirring, the aluminum alloy becomes a fine mixed fluid of ceramic and aluminum alloy without arborescent forms; finally, the external configuration of a heat sink is accomplished through directly compression casting.

1. An apparatus (1) for the positioning of a measuring device (10) having an annular or arcuate track (11) on which the measuring device (10) is supported and for the positioning of the sensing head (100) of the measuring device (10) at a position radial to the track (11) characterised in that the apparatus has a crossbeam (14) which supports the measuring device (10), bearings (12, 13) arranged between the track (11) and the crossbeam (14) and a device for the changing of the position of the crossbeam (14) with the measuring device (10) in a radial direction to the track (11) with respect to the track (14).
2. An apparatus (1) in accordance with claim 1 wherein the bearings between the track (11) and the crossbeam (14) are swivelling bolsters (12, 13) which are movable towards one another, away from one another and in the same direction on the track (11) at the same or at different speeds and wherein at least one of the swivelling bolsters (12, 13), preferably both swivelling bolsters (12, 13), are displaceable with respect to the crossbeam (14).
3. An apparatus (1) in accordance with claim 1 or claim 2, wherein at least one of the swivelling bolsters (12, 13) has a drive motor, preferably an electric motor, in order to move the swivelling bolsters (12, 13) and the crossbeam (14) with the measuring device (10) on the track (11).
4. An apparatus (3) in accordance with claim 1 having an annular or ring segment-like track (31) which has two rings (311, 312) or segments which are displaceable relative to one another by turning and wherein the crossbeam (34) is doubly supported on the track (31) and one each of the bearings (32, 33) is connected to one of the two rings (311, 312) or segments.
5. An apparatus (3) in accordance with claim 4 having a device for the synchronous turning of the rings (311, 312) or segments of the track (31) andor for the synchronous turning or synchronous turning to and fro of the rings (311, 312) with the crossbeam (34).
6. An apparatus in accordance with one of claims 1 to 5 wherein the measuring device (10) is arranged displaceably in the longitudinal direction of the crossbeam (14).
7. An apparatus in accordance with one of claims 1 to 6 having a measuring device (10) with a support arm (101) on which the sensing head (100) of the measuring unit (10) is arranged and which is displaceably or telescopically extendable obliquely or transversely to the longitudinal direction of the crossbeam (14), preferably in a radial direction to the track (11).
8. An apparatus in accordance with one of claims 1 to 7 having a circular track (11) with a diameter in the range from one to eight meters and a crossbeam (14) with a length in the range from 0.5 to 8 meters.
9. An apparatus in accordance with one of claims 1 to 8 having a measuring unit (10) for measuring the thickness of plastic films and having a measuring system which operates capacitively using a Hall probe or with ionising radiation, in particular with or radiation.
10. An apparatus in accordance with one of claims 1 to 9 wherein the transmission of measuring and control signals from and to the measuring unit (10) is effected by modulation onto the supply voltage via the feed line andor via separate signal lines andor in a wireless manner.
11. An apparatus in accordance with one of claims 1 to 10 wherein the transmission of the electric feed and of measuring and control signals from andor to the movable measuring unit (10) is effected at least in part via sliding contacts.
12. An apparatus in accordance with one of claims 1 to 11 having a device (1213) which holds the measuring unit in a fixed spatial position on the crossbeam (14) or on the chord formed by the crossbeam (14) with the track (11), preferably at the centre of said chord.
13. An apparatus in accordance with one of claims 1 to 12 wherein each of the swivelling bolsters (12,13) or rings (311, 312) have one stepping motor each for the drive and a control for the exact independent controlling of the stepping motors, with the same frequency or with different frequencies, and for the moving of the swivelling bolsters (12, 13) or rings (311, 312) in the same direction or in different directions and at the same speed or at different speeds.
14. An apparatus in accordance with one of claims 1 to 13 wherein each of the swivelling bolsters (12, 13) or rings (311, 312) have a asynchronous motor, in particular a linear induction motor or a motor with a friction wheel for the drive, and an arrangement for determining the exact position of the swivelling bolsters (12,13) on the track (11) and a control for independently controlling the motors with the same frequency or different frequencies and for, with the same frequency or with different frequencies, and for the moving of the swivelling bolsters (12, 13) or rings (311, 312) in the same direction or in opposite directions and at the same speed or at different speeds.

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 lighting device for an electronic or electromechanical apparatus, the lighting device including:
a display device for displaying time-related data or data not related to time;
a light source arranged to light the display device and to measure intensity of ambient light;
a measurement stage that provides an electric signal representative of the ambient lighting conditions;
a memory stage that stores an electric state corresponding to a low or strong luminosity level as a function of the electric signal generated by the measurement stage; and
a third stage which, when a signal ordering the light source to be switched on is produced, adapts the intensity of the light provided by said light source as a function of the electric state stored in the memory stage.
2. The lighting device according to claim 1, wherein the measurement stage includes the light source associated with a transistor so as to form a current generator controlled by the ambient light intensity.
3. The lighting device according to claim 2, wherein the memory stage includes a capacitor connected in parallel to terminals of a resistor so as to form an RC circuit whose time constant value is adjusted as a function of the capacitance values of the capacitor and the resistor.
4. The lighting device according to claim 3, wherein the time constant value corresponds to the time necessary for the human eye to become accustomed to the dark.
5. The lighting device according to claim 3, wherein a circuit controlling the switching on of the light source includes a flip flop mounted following the circuit formed by the capacitor and the resistor, the high or low state of a logic input D of the flip flop being a function of the state of charge of the capacitor, this state being transferred to a logic output Q of the same flip flop upon reception of the control signal ordering the light source to be switched on, the output Q of said flip flop then controlling means capable of powering the light source with strong or weak current depending upon whether the logic state of said output Q is high or low.
6. The lighting device according to claim 5, wherein the means for controlling the intensity of the current powering the light source includes at least two series connected resistors, one of which short-circuits by a transistor arranged across the terminals of the one resistor when the transistor is made conductive.
7. The lighting device according to claim 5, wherein the control signal is generated by a timing circuit, this timing circuit ordering closure of switching means for connecting the light source to a power source and determining the time during which said light source will remain switched on.
8. The lighting device according to claim 7, wherein the switching means include a transistor.
9. The lighting device according to claim 7, wherein the light source is powered with a timing with respect to the transmission of the control signal for switching on said light source.
10. The lighting device according to claim 9, wherein the timing is generated by an RC circuit including a capacitor and a resistor.
11. The lighting device according to claim 5, wherein when the light source is switched off, a second timing circuit resets the logic output Q of the flip flop to zero.
12. The lighting device according to claim 3, Wherein the memory stage is separated from the measurement stage by an anti-return diode preventing the capacitor from discharging into said measurement stage.
13. The lighting device according to claim 3, wherein switching means are arranged between the measurement stage and the memory stage, these switching means being conductive for as long as the light source measures the ambient light intensity, and being non conductive upon reception of the signal ordering the light source to be switched on in order to avoid disturbing the state of charge of said memory stage.
14. The lighting device according to claim 13, wherein the switching means include a transistor.
15. A lighting method for a device displaying time-related data, or data not related to time, for an electronic or electromechanical apparatus, wherein the method includes the steps of:
providing an electronic or electromechanical apparatus having a display device for displaying time-related data, or data not related to time, wherein the apparatus includes
a light source arranged to light the display device and to measure the intensity of ambient light and
a programmable circuit connected to power the light source;

programming the programmable circuit with times for adapting the lighting of the light source to day and night vision conditions;
lighting the display device with the light source; and
measuring the intensity of ambient light using the light source.