Controlling an underground object

Details Controlling an underground object Controlling an underground object

2005-12-27

2005-12-27

Wong, Albert K. (Department: 2635)

Communications: electrical

Wellbore telemetering or control

Selective control of subsurface equipment

C324S326000, C175S045000, C175S057000

Reexamination Certificate

active

06980123

ABSTRACT:
In order to control the sonde of an underground object, such as an underground boring tool, a predetermined sequence of rotation steps is applied to the object and that sequence is detected. The detection of the appropriate sequence causes the sonde to change its function, for example by changing the carrier frequency of the signal transmitted by the sonde on to change the data output sequence or transfer rate, or to change output power. While it is possible to use a single rotation step, the use of more than one step, with each step to be carried out within a predetermined time, reduces the risk of error.

REFERENCES:
patent: 3908453 (1975-09-01), Jeter
patent: 4345650 (1982-08-01), Wesley
patent: 4701189 (1987-10-01), Oliker
patent: 4763258 (1988-08-01), Engelder
patent: 4903245 (1990-02-01), Close et al.
patent: 4909336 (1990-03-01), Brown et al.
patent: 5103919 (1992-04-01), Warren et al.
patent: 5259468 (1993-11-01), Warren et al.
patent: 5318129 (1994-06-01), Wittrisch
patent: 5850624 (1998-12-01), Gard et al.
patent: 5917325 (1999-06-01), Smith
patent: 6237404 (2001-05-01), Crary et al.
patent: 6267185 (2001-07-01), Mougel et al.
patent: 6285190 (2001-09-01), Brune et al.
patent: 2002/0105331 (2002-08-01), Brune et al.
patent: 0172599 (1985-01-01), None
patent: 0588390 (1993-06-01), None
patent: 2356207 (1999-11-01), None
patent: 2352743 (2000-07-01), None
patent: 96/29615 (1996-09-01), None
Search Report of Nov. 9, 1999.
Search Report of Aug. 2, 2000.

Affiliated with

Also associated with

Rating

Controlling an underground object does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Controlling an underground object, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlling an underground object will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3504736