Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent
1990-10-31
1992-04-07
Neuder, William P.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Sectional guide or shaft having means to lock sections in...
175256, E21B 708
Patent
active
051019140
ABSTRACT:
An orientatable adjustable bent housing consisting of a tubular inner housing which is telescopically received within a tubular outer housing. A sleeve is provided which has an angular offset end face. The sleeve is axially slidable along the inner housing between a coupled position wherein spline non-rotatably couple the sleeve with the inner housing and an orientatable position wherein the sleeve is disengaged from the spline permitting respective rotational positioning of the sleeve and the inner housing. In the coupled position the sleeve is further slidable between an inoperative position wherein the sleeve is spaced from the outer housing and an operative position. In the operative position the angularly offset end face of the sleeve is brought in face to face relation with an angularly offset end face of the outer housing thereby creating a bend the magnitude of which is dependent upon the relative rotational positioning of the outer housing and the inner housing. An overlapping splined engagement couples the inner housing to the outer housing when the sleeve is in the operative position. A locking nut maintains the sleeve in the operative position.
REFERENCES:
patent: 4067404 (1978-01-01), Crase
patent: 4077657 (1978-03-01), Trzeciak
patent: 4220214 (1980-10-01), Benoit
patent: 4286676 (1981-10-01), Nguyen
patent: 4303135 (1981-12-01), Benoit
patent: 4745982 (1988-05-01), Wenzel
patent: 4811798 (1989-03-01), Falgout, Sr. et al.
patent: 4813497 (1989-03-01), Wenzel
patent: 4817740 (1989-04-01), Beimgraben
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