Oilfield elevator

Details Oilfield elevator Oilfield elevator

2011-01-11

2011-01-11

Kramer, Dean J (Department: 3652)

Handling: hand and hoist-line implements

Grapple

Collar-engaging

C294S102200

Reexamination Certificate

active

07866721

ABSTRACT:
An oilfield elevator including a locking mechanism operable by axial movement of the elevator's first body segment relative to its second body segment to control pivotal rotation about a hinge between the body segments; and an actuation lever positioned between the first body segment and the second body segment, the actuation lever including a protrusion thereon and being moveable to drive the protrusion against the first body segment to drive the first body segment axially relative to the second body segment.

REFERENCES:
patent: 1527534 (1925-02-01), Black
patent: 1599144 (1926-09-01), Paulsen
patent: 1646981 (1927-10-01), Rick
patent: 1670048 (1928-05-01), Rick
patent: 1766556 (1930-06-01), Smith
patent: 1782754 (1930-11-01), Wilcox
patent: 2065781 (1936-12-01), Wilson
patent: 2215649 (1940-09-01), Mullinkx
patent: 2264775 (1941-12-01), Spang
patent: 2392462 (1946-01-01), Coe
patent: 2722450 (1955-11-01), Nelson
patent: 2957724 (1960-10-01), Bujold
patent: 3358341 (1967-12-01), Burstall
patent: 3884519 (1975-05-01), McFadden
patent: 4396216 (1983-08-01), Hamilton
patent: 5340182 (1994-08-01), Busink et al.
patent: 7434614 (2008-10-01), Nelson et al.

Affiliated with

Also associated with

Rating

Oilfield elevator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Oilfield elevator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oilfield elevator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2738998