Angle sensor using thermal conductivity for a steerable boring t

Details Angle sensor using thermal conductivity for a steerable boring t Angle sensor using thermal conductivity for a steerable boring t

1990-06-18

1992-07-28

Dang, Hoang C.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Tool position direction or inclination measuring or...

33366, 175 61, E21B 704, E21B 4702

Patent

active

051334178

ABSTRACT:
An angle sensor for determining the roll angle of a rotating member is provided. The angle sensor includes an array of paired electrical components, each electrical component having an electrical characteristic which varies as a function of temperature. A fluid responsive to the rotation of the rotating member causes the electrical characteristic of a first one of each pair of electrical components to be different than the electrical characteristic of a second one of each pair of electrical components. A comparator compares the electrical characteristics of the first and second ones of each pair of electrical components to determine the roll angle of the rotatable member.

REFERENCES:
patent: 2658284 (1953-11-01), Arps
patent: 2936411 (1960-05-01), Doty
patent: 3172212 (1965-03-01), Pappas
patent: 3434219 (1969-03-01), Bowman
patent: 3442023 (1969-05-01), Remington et al.
patent: 3461979 (1969-08-01), Newfarmer
patent: 3525405 (1970-08-01), Coyne et al.
patent: 3529682 (1970-09-01), Coyne et al.
patent: 3589454 (1971-06-01), Coyne
patent: 3712391 (1973-01-01), Coyne
patent: 3786472 (1974-01-01), Scopacasa
patent: 3906471 (1975-09-01), Shawhan
patent: 4028815 (1977-06-01), Buckley et al.
patent: 4167818 (1979-09-01), Cantarella et al.
patent: 4244117 (1981-01-01), Cantarella et al.
patent: 4422243 (1983-12-01), Brunson et al.
patent: 4438820 (1984-03-01), Gibson
patent: 4452075 (1984-06-01), Bockhorst et al.
patent: 4493155 (1985-01-01), Comeau et al.
patent: 4521973 (1985-06-01), Wiklund et al.
patent: 4528760 (1985-07-01), Plummer
patent: 4641434 (1987-02-01), Engler
patent: 4644662 (1987-02-01), Anderson et al.
patent: 4646277 (1987-02-01), Bridges et al.
patent: 4672753 (1987-06-01), Kent et al.
patent: 4674579 (1987-06-01), Geller et al.
patent: 4682129 (1987-07-01), Bakermans et al.
patent: 4710708 (1987-12-01), Rorden et al.
patent: 4714118 (1987-12-01), Baker et al.
patent: 4779353 (1988-10-01), Lopes et al.
patent: 4787463 (1988-11-01), Geller et al.
patent: 4811491 (1989-03-01), Phillips et al.
patent: 4812812 (1989-03-01), Flowerdew et al.
patent: 4875014 (1989-10-01), Roberts et al.
patent: 4907658 (1990-03-01), Stangl et al.
patent: 4937518 (1990-06-01), Donati et al.
patent: 4953638 (1990-09-01), Dunn
"Extended-Range Horizontal Boring System", Technology Profile, Nov. 1986.
"Horizontal Boring Technology", pp. 1-8, Winter, 1986/1987.

Affiliated with

Also associated with

Rating

Angle sensor using thermal conductivity for a steerable boring t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Angle sensor using thermal conductivity for a steerable boring t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Angle sensor using thermal conductivity for a steerable boring t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1682686