Wells – Expansible anchor or casing
Patent
1989-06-08
1990-05-22
Novosad, Stephen J.
Wells
Expansible anchor or casing
166 664, E21B 2300, E21B 4700
Patent
active
049269372
ABSTRACT:
A compound linkage arm assembly for providing a substantial force to initially extend an arm assembly from a sonde without increasing the driving force in the opening mechanism. A linear drive mechanism initially acts upon a linkage within an arm assembly of the tool. The links unseat and force the arm away from the tool without much force from the drive mechanism. Once the arm is moved away from the tool by the full extension of the links, push rods act directly upon the arm to contact the bore hole wall. The advantage of this arrangement is that the linear drive mechanism is not required to exert a great amount of lateral force upon the arm to obtain the initial extension. The links acting between the arm and the sonde body provide the lateral force necessary to extend the arm. Once the links have been fully extended, the linear drive mechanism is able to act directly upon the arm the remainder of the distance since sufficient later forces are generated by the geometry between the drive, the push rod and the arm pivot points.
REFERENCES:
patent: 3295604 (1967-01-01), Cordary et al.
patent: 3353622 (1967-11-01), Erikson
patent: 3426865 (1969-02-01), Henry
patent: 3811529 (1974-05-01), Crawford
patent: 3978939 (1976-09-01), Trouiller
patent: 4120353 (1978-10-01), Roesner
patent: 4130816 (1978-12-01), Vogel et al.
patent: 4428422 (1984-01-01), Laurent
patent: 4435978 (1984-03-01), Glatz
patent: 4480186 (1984-10-01), Wolk
patent: 4506219 (1985-03-01), Lee
patent: 4514809 (1985-04-01), Johnson et al.
patent: 4523640 (1985-06-01), Wilson et al.
patent: 4549630 (1985-10-01), Brown
patent: 4563757 (1986-01-01), DeCorps
patent: 4575831 (1986-03-01), DeCorps
patent: 4610309 (1986-09-01), O'Brien et al.
patent: 4614250 (1986-09-01), Panetta
patent: 4715469 (1987-12-01), Yasuda et al.
patent: 4715470 (1987-12-01), Paulsson
patent: 4751688 (1988-06-01), Paulsson
patent: 4757873 (1988-07-01), Linyaev et al.
Kane Barry C.
Novosad Stephen J.
Western Atlas International Inc.
LandOfFree
Compound linkage-arm assembly for use in bore-hole tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compound linkage-arm assembly for use in bore-hole tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compound linkage-arm assembly for use in bore-hole tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2127067