Boring or penetrating the earth – With above-ground means to feed tool
Patent
1990-09-19
1991-08-06
Dang, Hoang C.
Boring or penetrating the earth
With above-ground means to feed tool
166 775, 166 78, 173164, 175170, E21B 302, E21B 1916
Patent
active
050369270
ABSTRACT:
An apparatus for gripping a down hole tubular for rotation in a drilling machine includes a support member adapted for connection to the quill of the drilling machine. The support member supports three or more guides which converge toward one another in a selected direction. A clamping dog or engaging member is mounted to slide in each of the guides to move into engagement with a down hole tubular when positioned toward a first end of the guide and out of engagement with the down hole tubular when positioned toward a second end of the guide. A linkage interconnects the engaging members, and includes an acutating member exposed at an upper portion of the support member. This actuating member moves vertically along an axis between open and closed positions, which causes the engaging members to release or engage the tubular. The actuating member itself bears against an additional element on the top head drive assembly of the drilling machine which can be moved vertically to cause the clamping dogs to engage or release the tubular.
REFERENCES:
patent: 1200612 (1916-10-01), Helm
patent: 1292747 (1919-12-01), Foster
patent: 1687808 (1927-05-01), Thomas et al.
patent: 1740377 (1928-05-01), Snyder et al.
patent: 1843537 (1932-02-01), Bickerstaff
patent: 1981656 (1931-12-01), Masters et al.
patent: 2016652 (1932-12-01), Poole
patent: 2181641 (1938-08-01), Hicks
patent: 3129013 (1960-05-01), Thompson et al.
patent: 3278220 (1965-01-01), Wilson
patent: 3371562 (1965-10-01), Kelley
patent: 3550485 (1969-05-01), Dickmann
patent: 3610640 (1971-10-01), Bollin et al.
patent: 3623558 (1971-11-01), Brown
patent: 3722603 (1973-03-01), Brown
patent: 3722607 (1973-03-01), Ray
patent: 3734212 (1973-05-01), Perlewitz
patent: 3747675 (1973-07-01), Brown
patent: 3766991 (1973-10-01), Brown
patent: 3776320 (1973-12-01), Brown
patent: 3793913 (1974-02-01), Wilms
patent: 3915244 (1975-10-01), Brown
patent: 4291598 (1981-09-01), Cherry
patent: 4357843 (1982-11-01), Peck et al.
patent: 4386544 (1983-06-01), Fuminier
patent: 4511169 (1985-04-01), Willis
patent: 4522439 (1985-06-01), Haney
patent: 4570706 (1986-02-01), Pugner
patent: 4576254 (1986-03-01), Cox
patent: 4589503 (1986-05-01), Johnson et al.
patent: 4650236 (1987-03-01), Haney et al.
patent: 4660634 (1987-04-01), Johnson, Jr.
patent: 4667752 (1987-05-01), Berry et al.
patent: 4709604 (1987-12-01), Rogers
patent: 4711310 (1987-12-01), Luen
patent: 4762187 (1988-08-01), Haney
patent: 4821814 (1989-04-01), Willis et al.
patent: 4867236 (1989-09-01), Haney et al.
Weatherford Oilfield Power Equipment, pp. 12 and 13.
Dang Hoang C.
W-N Apache Corporation
LandOfFree
Apparatus for gripping a down hole tubular for rotation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for gripping a down hole tubular for rotation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for gripping a down hole tubular for rotation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1980577