Automatic switchable low threshold current power supply

• US 9,060,594 B2
• Filed: 12/19/2013
• Issued: 06/23/2015
• Est. Priority Date: 12/21/2012
• Status: Expired due to Fees

• Current Assignee: Murray W. Davis
• Original Assignee: Murray W. Davis
• Inventors: Davis, Murray W.
• Primary Examiner(s): PATEL, PARESH H
• Application Number:
  US14/133,811
• Publication Number:
  US 20140176275A1
• Time in Patent Office: 551 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A46B 2200/3073 Brush for cleaning specific unusual places not otherwise covered, e.g. gutters, golf clubs, tops of tin cans, corners
• CPC Class Codes: A46B 9/028 Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
• CPC Class Codes: G01B 11/0616 of coating
• CPC Class Codes: G01D 11/30 Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
• CPC Class Codes: G01K 13/00 Thermometers specially adapted for specific purposes
• CPC Class Codes: G01N 27/223 for determining moisture content, e.g. humidity rain detectors on vehicle windows B60S1/0825
• CPC Class Codes: G01R 1/20 Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
• CPC Class Codes: G01R 1/22 Tong testers acting as secondary windings of current transformers
• CPC Class Codes: G01R 15/186 using current transformers with a core consisting of two or more parts, e.g. clamp-on type G01R15/142 - G01R15/16 take precedence; tong testers G01R1/22
• CPC Class Codes: G01R 19/0084 measuring voltage only all subgroups of G01R19/00 take precedence
• CPC Class Codes: G01R 19/0092 measuring current only all subgroups of G01R19/00 take precedence
• CPC Class Codes: G01R 31/08 Locating faults in cables, transmission lines, or networks
• CPC Class Codes: G01R 31/086 in power transmission or distribution networks, i.e. with interconnected conductors
• CPC Class Codes: G01R 31/40 Testing power supplies testing photovoltaic devices H02S50/10
• CPC Class Codes: G01W 1/14 Rainfall or precipitation gauges measuring volume in general G01F
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/22 Cooling by heat conduction through solid or powdered fillings
• CPC Class Codes: H01F 38/30 Constructions
• CPC Class Codes: H01R 4/28 Clamped connections, spring connections made by means of terminals specially adapted for contact with, or insertion into, printed circuits H01R12/00
• CPC Class Codes: H02G 1/02 for overhead lines or cables
• CPC Class Codes: H04N 23/51 : Housings
• CPC Class Codes: H04N 7/181 : for receiving images from a plurality of remote sources
• CPC Class Codes: Y02E 10/50 : Photovoltaic [PV] energy
• CPC Class Codes: Y10T 29/49117 : Conductor or circuit manufacturing

Abstract

A device connectable to a power line conductor includes an electrically conductive insulated first winding of wire wound into at least two turns having a first end and a second end. The first end is configured to be attached to a first power line conductor. An electrically conductive insulated second winding of wire wound into at least one turn. The second winding of wire includes a first end connected to the second end of the first winding of wire and a second end is configured to be attached to a second power line conductor. An automatic switchable connecting device is configured to move between a first position with the first winding of wire in series with the first and the second power line conductors and a second position with the first and the second power line conductors and the first and second windings of wire in series.

Claims

1. A device connectable to an electric power line conductor comprising:

an electrically conductive insulated first winding of wire wound into at least two turns having a first end and a second end, wherein the first end is configured to be attached to a first power line conductor;

an electrically conductive insulated second winding of wire wound into at least one turn, the second winding of wire having a first end connected to the second end of the first winding of wire and a second end configured to be attached to a second power line conductor; and

an automatic switchable connecting device including a rotary by-pass switch blade and rotary tap selector switch blade mounted on a common shaft configured to move between a first position with the first winding of wire in series with the first power line conductor and the second power line conductor in response to a first power line current profile and a second position with the first power line conductor, the first winding of wire, and the second winding of wire connected to the second power line conductor in series in response to a second power line current profile.

2. The device of claim 1 wherein the automatic switchable connecting device is configured to move between a third position connecting the first power line conductor in series with the second power line conductor in response to a third current profile.

3. The device of claim 2 wherein the automatic switchable connecting device includes a reversible motor and a gear train for moving between the first position, the second position and the third position.

4. The device of claim 1 wherein the automatic switchable connecting device includes a rotary tap selector and moveable between engaging a first set of contact fingers and a second set of contact fingers.

5. The device of claim 4 wherein the automatic switchable connecting device includes a reversible motor configured to rotate the rotary tap selector.

6. The device of claim 5 wherein the automatic switchable connecting device includes a power supply transformer configured to power the reversible motor.

7. The device of claim 1 including a current sensing module and a motor control power supply transformer configured to power a reversible motor in mechanical connection with a gear train configured to move the automatic switchable connecting device between the first position and the second position.

8. The device of claim 1 wherein the automatic switchable connecting device includes a motor and a motor control power supply transformer having a primary formed by a power line conductor and a secondary configured to provide power to a reversible motor and a logic circuit for controlling the reversible motor.

9. The device of claim 1 wherein the rotary by-pass switch blade is configured to overlap a first set of by-pass switch contact fingers or a second set of by-pass switch contact fingers when the rotary tap selector blade moves between contacting a first set of tap selector contact fingers and a second set of tap selector contact fingers.