1. A powered driver for rotating a threaded connector, the driver comprising:
a head housing a drive transfer assembly operating a rotatable socket engageable at the threaded connector;
means for applying motive force to said drive transfer assembly;
a reaction unit engageable at a utility related to the threaded connector, said reaction unit movably maintained at said head and biased toward said rotatable socket at least during rotation of an engaged threaded connector in one direction; and
switching with components associated with both said reaction unit and said head that are operatively associated to provide triggering at selected relative location of said reaction unit and said head to decouple said means for applying motive force.
2. The driver of claim 1 wherein said switching includes a probe held at one of said reaction unit and said head and extending through the other of said reaction unit and said head, and a link at said other of said reaction unit and said head positioned to be contactable by said probe.
3. The driver of claim 2 wherein said link is a roller switch.
4. The driver of claim 2 wherein said probe length is adjustable.
5. The driver of claim 1 further comprising a controller and user actuatable controls for user selectivity of operational modes, direction and extent of rotation of said socket.
6. The driver of claim 1 wherein said rotatable socket is a split socket, said driver further comprising means for selectively rotating said split socket to a selected line release position.
7. The driver of claim 1 wherein said means for applying motive force is an electric motor, said driver further comprising torque amplifying drive train modules between said motor and said drive transfer assembly at said head.
8. A powered driver for line fittings comprising:
a head housing a rotatable socket;
a motor operatively associated with said rotatable socket;
a reaction unit including a fitting engagement attached to at least one rail guide movably maintained through said head;
at least a first biasing unit maintained at said head and operatively associated with said rail guide of said reaction unit to bias said fitting engagement of said reaction unit toward said rotatable socket;
a probe connected to said reaction unit; and
a switch operatively associated with said motor and mounted at said head at a position to be contactable by said probe.
9. The driver of claim 8 wherein said probe is receivable through an opening at said head.
10. The driver of claim 8 further comprising a cam associated with said rotatable socket and a follower operative with said cam and connected to a switch for determining individual rotations of said socket.
11. The driver of claim 10 further comprising a controller and user actuatable controls for user selectivity of operational modes, direction and extent of rotation of said socket, and data accumulation.
12. The driver of claim 8 further comprising a pneumatic reaction unit reset operatively associated with said reaction unit and said biasing unit.
13. The driver of claim 8 further comprising a safety switch at said head allowing motor actuation only when a line fitting is correctly positioned at said driver.
14. A method for reliably repeatable rotation of threaded line fitting nuts to a selected tightness comprising:
engaging the nut at a rotatable socket and rotating the nut in one direction;
engaging another part of the line fitting at a reaction unit movably maintained adjacent to the socket and biasing the reaction unit toward the socket during rotation of the engaged nut in said one direction;
gauging relative location of the reaction unit and the socket during rotation in said one direction; and
responsive to said gauging, causing cessation of rotation when a selected relative location of the reaction unit and the socket is achieved corresponding to selected nut tightness.
15. The method on claim 14 further comprising the step of momentarily automatically reversing direction of rotation after cessation of rotation in said one direction to thereby relieve system tension without changing nut torque.
16. The method of claim 14 further comprising the step of sensing correct positioning of said line fitting at the socket before enabling rotation of said socket in said one direction.
17. The method of claim 14 wherein the step of gauging relative location includes probing distance between the reaction unit and the socket during rotation in said one direction.
18. The method of claim 17 wherein the step of probing distance includes attaching a probe to the reaction unit and selectively adjusting relative length of said probe.
19. The method of claim 18 wherein the step of causing cessation of rotation includes contact by said probe with a switch maintained adjacent to the socket.
20. The method of claim 14 further comprising pneumatically resetting position of said reaction unit after cessation of rotation.
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 boost switching power supply, comprising:
a first magnetic element having a coil wound on a first magnetic core and a first diode that are serially connected between one terminal of a power source and one terminal of a first capacitor for smoothing;
a first switching element connected between a first node where the first magnetic element and the first diode are connected and the other terminal of the power source;
a second magnetic element and a second switching element that are serially connected between the first node and the other terminal of the power source;
a second diode and a second capacitor that are serially connected between a second node where the second magnetic element and the second switching element are connected and the first node; and
a third magnetic element having a coil wound on the first magnetic core and connected between the first node and the second magnetic element, the first magnetic element and the third magnetic element having coils wound on the first magnetic core and the polarities of the first and third magnetic element being opposite to each other causing energy that is in the third magnetic element to be regenerated via the first core as input power to the first magnetic element upon the second switching element transitioning from an ON state to an OFF state.
2. The boost switching power supply as claimed in claim 1 wherein an inductance of the first magnetic element is greater than that of the third magnetic element.
3. The boost switching power supply as claimed in claim 1, further comprising a third diode connected between a third node where the second diode and the second capacitor are connected and the one terminal of the first capacitor.
4. The boost switching power supply as claimed in claim 1, further comprising a fourth diode inserted between the second node and the second diode and a third capacitor connected between a fourth node where the second diode and the fourth diode are connected and the other terminal of the power source.
5. The boost switching power supply as claimed in claim 1 wherein an inductance of the first magnetic element is greater than that of the third magnetic element.
6. The boost switching power supply as claimed in claim 1, further comprising a control circuit for controlling conductive states of the first and second switching elements, the control circuit turning the second switching element ON before turning the first switching element ON and turning the first switching element ON when a voltage at the first node becomes lower than a voltage at the other terminal of the power source.
7. The boost switching power supply as claimed in claim 3, further comprising a control circuit for controlling conductive states of the first and second switching elements, the control circuit turning the second switching element ON before turning the first switching element ON and turning the first switching element ON when a voltage at the first node becomes lower than a voltage at the other terminal of the power source.
8. The boost switching power supply as claimed in claim 7, further comprising a fourth diode connected in parallel with the first switching element, the control circuit monitoring electric current flowing through the fourth diode to detect when the voltage at the first node becomes lower than the voltage at the other terminal of the power source.
9. The boost switching power supply as claimed in claim 8, further comprising a third capacitor connected in parallel with the fourth diode.
10. The boost switching power supply as claimed in claim 7, further comprising a fourth diode connected in parallel with the first switching element and a voltage detection element for detecting a voltage across terminals of the fourth diode, the control circuit detecting when the voltage at the first node becomes lower than the voltage at the other terminal of the power source based on a voltage detected by the voltage detection element.
11. The boost switching power supply as claimed in claim 1 wherein the first and second switching elements are one switch selected from the group consisting of a bipolar transistor, MOSFET, IGBT, and BSIT.
12. A boost switching power supply, comprising:
a first magnetic element having a coil wound on a first magnetic core and a first diode that are serially connected between one terminal of a power source and one terminal of a first capacitor for smoothing;
a first switching element connected between a first node where the first magnetic element and the first diode are connected and the other terminal of the power source;
a second magnetic element having a coil wound on a second magnetic core and a second switching element that are serially connected between the first node and the other terminal of the power source;
a control circuit for controlling conductive states of the first and second switching elements,
the control circuit turning the first switching element ON while the second switching element is in an ON state;
a second diode and a second capacitor that are serially connected between the second node where the second magnetic element and the second switching element are connected and the first node; and
a third magnetic element having a coil wound on the first magnetic core and connected between the first node and the second magnetic element, the first magnetic element and the third magnetic element having coils wound on the first magnetic core and polarities of the first and third coil windings of the magnetic elements being opposite to each other causing energy that is in the third magnetic element to be regenerated via the first core as input power to the first magnetic element upon the second switching element transitioning from an ON state to an OFF state.
13. The boost switching power supply as claimed in claim 12, further comprising a third diode connected between a third node where the second diode and the second capacitor are connected and the one terminal of the first capacitor.