Tool and kit for electrical fishing

• US 3,971,543 A
• Filed: 04/17/1975
• Issued: 07/27/1976
• Est. Priority Date: 04/17/1975
• Status: Expired due to Term

• Current Assignee: William F. Shanahan
• Original Assignee: William F. Shanahan
• Inventors: Shanahan, William F.
• Primary Examiner(s): Smith, Al Lawrence
• Assistant Examiner(s): Watson, Robert C.
• Application Number:
  US05/569,146
• Time in Patent Office: 467 Days
• Field of Search: 254/134.3 R, 166/65, 294/65.5, 335/306, 335/207
• US Class Current: 254/134.30R
• CPC Class Codes: H02G 1/08 through tubing or conduit, e.g. rod or draw wire for pushing or pulling inserting electrical cables into tubes using wallbores E21B17/206; for optical cables G02B6/4401
• CPC Class Codes: Y10S 174/13 High voltage cable, e.g. above 10kv, corona prevention

Abstract

A tool for fishing electrical wires through walls includes a magnetically attractable sensor assembly having a contactor element secured through a connecting sleeve to one end of a length of chain. The other end of the chain carries a fastener member which can be secured to a line or wire or the like for suspending the sensor assembly within a wall. A substantially hollow cylindrical member which serves as a housing for the sensor assembly when the tool is not in use has a magnet fixed within one end thereof. In use, the end of the cylindrical housing member which carries the magnet is inserted through a small hole in the wall to attract the sensor assembly which is suspended within the wall.

Claims

1. A tool for fishing for electrical wires and the like comprising a magnet means and a multi-part sensor assembly;

said sensor assembly comprising a chain and a rod-shaped contactor connected to one end of said chain, said chain and said rod-shaped contactor being comprised of magnetically attractable materials and being connected by a connecting sleeve which encompasses part of said contactor and part of said one end of said chain;

at least some of the parts of said sensor assembly having differing magnetic properties whereby varying forces are encountered when said sensor assembly is drawn across said magnet means.

2. A tool as claimed in claim 1 wherein said magnet means comprises a cylindrically-shaped substantially hollow housing member having a magnet inserted into and closing one end thereof, said housing member being adapted to house said sensor assembly when said tool is not in use.

3. A tool as claimed in claim 1 wherein said sensor assembly includes a fastener member at the other end of said chain.

4. A tool as claimed in claim 1 wherein said entire sensor assembly is magnetically attractable, that portion of the assembly encompassed by said connecting sleeve being the least magnetically attractable and said contactor being the most magnetically attractable of said parts.