Sondes for locating underground pipes and conduits

Details Sondes for locating underground pipes and conduits Sondes for locating underground pipes and conduits

2007-11-20

2007-11-20

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Conductor identification or location

Inaccessible

C324S326000, C324S329000, C324S260000

Reexamination Certificate

active

11683553

ABSTRACT:
A sonde includes an elongate flexible ferromagnetic core and a coil surrounds an intermediate segment of the core. A housing surrounds and supports the coil. An electronic drive circuit is mounted in the housing for supplying the coil with an electric signal that will induce the core to emit electromagnetic signals at a predetermined strength and frequency that can be remotely detected. Self-contained battery powered float-type and pill-type sondes are also disclosed.

REFERENCES:
patent: 2601249 (1952-06-01), Brenholdt
patent: 2820959 (1958-01-01), Bell
patent: 2908863 (1959-10-01), Neff
patent: 3597680 (1971-08-01), Haddon
patent: 3718930 (1973-02-01), McCullough et al.
patent: 3746106 (1973-07-01), McCullough et al.
patent: 4674579 (1987-06-01), Geller et al.
patent: 4907658 (1990-03-01), Stangl et al.
patent: 5337002 (1994-08-01), Mercer
patent: 5530357 (1996-06-01), Cosman et al.
patent: 5633589 (1997-05-01), Mercer
patent: 5872703 (1999-02-01), Williams et al.
patent: 6088580 (2000-07-01), Powlousky
patent: 6260634 (2001-07-01), Wentworth et al.
patent: 6452396 (2002-09-01), Ott et al.
patent: 6644421 (2003-11-01), Long
U.S. Appl. No. 10/061,887 (Fig. 6 & pp. 7-9), filed Jan. 31, 2002.
Prototek AT-12 and FT-8 transmitter data sheets from the Internet (4 pages), no date provided.
Prototek FV-40 transmitter data sheet from the Internet, no date provided.
Prototek FMJ transmitter data sheet from the Internet, no date provided.

Affiliated with

Also associated with

Rating

Sondes for locating underground pipes and conduits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sondes for locating underground pipes and conduits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sondes for locating underground pipes and conduits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3806253