WO2000067041A1 - Method and indicator detecting grounded metal - Google Patents
Method and indicator detecting grounded metal Download PDFInfo
- Publication number
- WO2000067041A1 WO2000067041A1 PCT/CA1999/000393 CA9900393W WO0067041A1 WO 2000067041 A1 WO2000067041 A1 WO 2000067041A1 CA 9900393 W CA9900393 W CA 9900393W WO 0067041 A1 WO0067041 A1 WO 0067041A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bulb
- grounded metal
- metal
- fuse
- grounded
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Definitions
- This invention relates to a method and indicator detecting grounded metal.
- the system can operate either with or without a
- One end of the wire co ing from the bulb 2 is connected in series to the fuse 1 .
- the fuse 1 is connected to the phase 5.
- Another end from the bulb 2 is connected to the metal body of the mechanical
- incandescent lamp incandescent lamp, light-emitting diodes,
- gaseous-discharge lamps (fluorescent, neon, metal halide lamp).
Abstract
In the process of drilling a concrete in a buildings many times accidentally can damage existing electrical conduit and the wires in side or plumbing pipes. All this damages can be avoid with devise which can indicate a grounded metal. As a grounded metal I consider any metal object which is grounded to the existing electrical system in the building, such as conduit, plumbing pipes, supporting frames or metal beam.
Description
SPECIFICATION
Title: Method and indicator detecting grounded metal.
This invention relates to a method and indicator detecting grounded metal.
None of the drills on the market are equipped with a device to detect grounded
metal. This creates huge problems and a lost of money ,when the conduit
and the wires inside are damaged in the process of drilling holes in the concrete .
I have found that these disadvantages can be solved with detecting any grounded
metal and preventing from further damages on a conduit ,water pipe or drill bit .
DESCRIPTION
The method of indicating a grounded metal works on a closing power circuit
between the phase and the neutral line .
As a indicator I am using a neon bulb 125 V, 1/3W .
To prevent eventual short circuit between the hot wire from our circuit to possible
hot wire from damaged conduit or any other source I am using 2 A , 125V fuse
connected in series to the bulb. The system can operate either with or without a
fuse. All connections can be done inside the drill .(See drawing 1/1).
One end of the wire co ing from the bulb 2 is connected in series to the fuse 1 .
The fuse 1 is connected to the phase 5.
Another end from the bulb 2 is connected to the metal body of the mechanical
drilling mechanism 3, which will provide neutral signals from the electrical
network , when the drill bit touch the grounded metal 4 . In this case the neutral
signal coming from the grounded metal 4 going through the drill bit and the metal
body on mechanical drilling mechanism 3 and from there through the wire 7
connecting this mechanism 3 with the bulb 2 the neutral signal going to the bulb
2 which will flash because the electrical circuit- is closed .
Wh n the light is Hashing it means that the drill bit is touching the grounded
metal
and the person who is drilling should stop in order to prevent damaging this metal
object which can be electrical conduit, plumbing pipe or damaging the drill bit.
As a indicator which will show the moment of touching the grounded metal
can be use any type of bulb as: incandescent lamp, light-emitting diodes,
gaseous-discharge lamps(fluorescent, neon, metal halide lamp).
Claims
1. A method of detecting tlie grounded metal .
2. The neon bulb with or without the fuse connected in series as a grounded metal
indicator.
3. The way of which the bulb is connected to perform as a grounded metal
indicator ,as shown on drawing 1/1. In which one end of tlie wire (6)coming from
the bulb(2) is connected in series to the fuse ( l).The fuse ( 1) is connected to the
phase of the power supply cable (5), which supply power to the electrical motor
(8)an the drill . Another wire(7) from the bulb (2)is connected to the metal body
of the mechanical drilling mechanism (3). which will provide the neutral signal
from tl e electrical network . when tlie drill bit touch the grounded metal (4).
4. A bulb as defined in claim 2 can be : incandescent lamp, light-emitting diodes,
gaseous-discharge lamps(iluorescent .neon .metal halide lamp).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CA1999/000393 WO2000067041A1 (en) | 1999-04-30 | 1999-04-30 | Method and indicator detecting grounded metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CA1999/000393 WO2000067041A1 (en) | 1999-04-30 | 1999-04-30 | Method and indicator detecting grounded metal |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09743253 A-371-Of-International | 1999-04-30 | ||
| US10/431,660 Continuation-In-Part US6867703B2 (en) | 2001-03-07 | 2003-05-09 | Safety-protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000067041A1 true WO2000067041A1 (en) | 2000-11-09 |
Family
ID=4173366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CA1999/000393 WO2000067041A1 (en) | 1999-04-30 | 1999-04-30 | Method and indicator detecting grounded metal |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2000067041A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2747154A (en) * | 1953-09-30 | 1956-05-22 | Du Pont | Concrete tool immobilizing circuit |
| US4089031A (en) * | 1977-03-24 | 1978-05-09 | Stevens Troy Franklin | Safety protection circuit |
-
1999
- 1999-04-30 WO PCT/CA1999/000393 patent/WO2000067041A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2747154A (en) * | 1953-09-30 | 1956-05-22 | Du Pont | Concrete tool immobilizing circuit |
| US4089031A (en) * | 1977-03-24 | 1978-05-09 | Stevens Troy Franklin | Safety protection circuit |
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