Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...
Patent
1981-05-05
1983-02-22
Corbin, David H.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Tool position direction or inclination measuring or...
175 74, E21B 708
Patent
active
043745474
ABSTRACT:
An auxiliary locking device for a crank connector of the type including two tubular members interconnected by a shaft having an axis of rotation different from the axes of rotation of the two tubular members. The shaft being rotatably secured to one of the two tubular members, and capable of moving between a first rotatably secured position and a second rotatably disengaged position with respect to the other of said two tubular members for causing the other of the two tubular members to rotate about the axis of rotation of the shaft. The rotation about the axis of the shaft defines acute angles between the axes of rotation of the tubular members and the axis of rotation of the shaft at a point where all three axes intersect. An auxiliary locking means includes at least one retractable finger located in a housing in either one of the shaft and the tubular member disengageable from the shaft, and corresponding grooves located in the other of the shaft and tubular member disengageable from the shaft. The at least one retractable finger extending from its housing when the shaft and corresponding tubular member are disengaged so as to engage the grooves to prevent undesired rotation of the disengaged tubular member after having been rotated about a desired angle, until the shaft and disengaged tubular member reengage thereby forcing the retractable finger to disengage the grooves and retract into its housing.
REFERENCES:
patent: 2336333 (1943-12-01), Zublin
patent: 3141512 (1964-07-01), Gaskell et al.
patent: 3457999 (1969-07-01), Massey
patent: 3593810 (1971-07-01), Fields
patent: 3888319 (1975-06-01), Bourne, Jr. et al.
patent: 4040495 (1977-08-01), Kellner et al.
patent: 4077657 (1978-03-01), Trzeciak
Cendre Andre
Laval Emmanuel
Nguyen Jean-Paul
Corbin David H.
Institut Francais du Pe'trole
LandOfFree
Crank connector for directional drilling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Crank connector for directional drilling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crank connector for directional drilling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1370629