Robert C Welker

US Patent:

7093822, Aug 22, 2006

Filed:

Jun 29, 2004

Appl. No.:

10/880399

Inventors:

Robert E. Welker - Arnold MO, US

International Classification:

B66F 3/00
G10H 3/00

US Classification:

2541343R, 2541343 FT

Abstract:

A magnetic wire pulling system advances wire through a house or other structure around obstacles with a string tied to a pulling cord then tied to the wire. The system has small, medium, and large magnets, and tools attracted to the magnets. The round small and medium magnets are tied upon strings wound upon spools. The spools have pins to secure magnets. The tools comprise a retrieval tool, a manual release tool, an insertion tool, an automatic release tool, a transfer tool, an extensible prop, and a telescoping pole with magnet. The tools deliver a magnet into the structure of a house, retrieve a magnet from the structure, or transfer a magnet from one tool to another tool. In operation, a bigger magnet attracts a smaller magnet or a magnet attracts a tool to advance a string beyond an obstacle to continue pulling wire.

US Patent:

7758021, Jul 20, 2010

Filed:

Jul 11, 2007

Appl. No.:

11/776145

Inventors:

Robert E. Welker - Arnold MO, US

International Classification:

H02G 1/08

US Classification:

2541343R, 2541343 FT, 81429, 279143

Abstract:

A tool has a cylinder with a pair of magnets, diametrically spaced apart upon the sides of the cylinder and of opposite polarity. In cooperation with a compass, the magnets identify the tool thus indicating its location when concealed prior to pulling wire through a house or other structure. The tool also spaces a bit extension tool away from interior faces of adjacent drywall panels. A setscrew secures the cylinder upon the shank of a bit extension for rotation of the tool. The magnets are integrated into the cylinder of the tool to survive ordinary handling, drilling through wooden structures, and rotation. The tool emanates a magnetic field from within a concealed location that deflects a compass for revealing the location of the tool.

US Patent:

20050285089, Dec 29, 2005

Filed:

Mar 10, 2005

Appl. No.:

11/076673

Inventors:

Robert Welker - Arnold MO, US

International Classification:

B66F003/00

US Classification:

2541343FT

Abstract:

A magnetic wire pulling system advances wire through a house or other structure around obstacles with a string tied to a pulling cord then tied to the wire. The system has small, medium, and large magnets, and tools attracted to the magnets. The round small and medium magnets are tied upon strings wound upon spools. The spools have pins to secure magnets. The tools comprise a retrieval tool, a manual release tool, an insertion tool, an automatic release tool, a transfer tool, an extensible prop, and a telescoping pole with magnet. The tools deliver a magnet into the structure of a house, retrieve a magnet from the structure, or transfer a magnet from one tool to another tool. In operation, a bigger magnet attracts a smaller magnet or a magnet attracts a tool to advance a string beyond an obstacle to continue pulling wire.

US Patent:

20060124910, Jun 15, 2006

Filed:

Jan 27, 2006

Appl. No.:

11/341070

Inventors:

Robert Welker - Arnold MO, US

International Classification:

H02G 1/08

US Classification:

2541343FT

Abstract:

A magnetic wire pulling system advances wire through a house or other structure around obstacles with a string tied to a pulling cord then tied to the wire. The system has small, medium, and large magnets, and tools attracted to the magnets. The round small and medium magnets are tied upon strings wound upon spools. The spools have pins to secure magnets. The tools comprise a retrieval tool, a manual release tool, an insertion tool, an automatic release tool, a transfer tool, an extensible prop, and a telescoping pole with magnet. The tools deliver a magnet into the structure of a house, retrieve a magnet from the structure, or transfer a magnet from one tool to another tool. In operation, a bigger magnet attracts a smaller magnet or a magnet attracts a tool to advance a string beyond an obstacle to continue pulling wire.

US Patent:

20070127994, Jun 7, 2007

Filed:

Dec 19, 2006

Appl. No.:

11/567611

Inventors:

ROBERT WELKER - Arnold MO, US

International Classification:

B23B 51/00

US Classification:

408226000

Abstract:

The magnetized drill bit extension provides a socket that accepts bits of various diameters and indicates its location when concealed, as within a wall. The invention has a socket at the end of a drill bit extension with a strong magnet integrated into the socket. The socket accepts round, square, and square corner rounded shanks of bits. The magnet within the socket endures drilling through wood. The socket emanates a magnetic field from within a concealed location that deflects a compass, thus revealing the location of the extension within a wall. Alternatively, a magnet is joined to the spade of a drill bit to reveal its location when concealed.