Drill pipe handling and placement apparatus

Patent 4547109 Issued on October 15, 1985. Estimated Expiration Date:

June 8, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1518561

3177944

3181630

3581506

3750769

Guide head for pipe rackers
Patent #: 3937514
Issued on: 02/10/1976
Inventor: Langowski

Self-centering clamp for down-hole tubulars
Patent #: 4403897
Issued on: 09/13/1983
Inventor: Willis

Gripping device
Patent #: 4423998
Issued on: 01/03/1984
Inventor: Inaba , et al.

Streamlined multi-axis robot wrist assembly with partially enclosed hydraulic and electrical lines to minimize the wrist envelope Patent #: 4459898
Issued on: 07/17/1984
Inventor: Harjar , et al.

Inventors

Application

No. 06/502088 filed on 06/08/1983

US Classes:

414/22.53, For nonvertical drilling175/85, WITH ORIENTING OR RACKING MEANS FOR UNCONNECTED TOOLS OR SECTIONS OF SHAFT OR CASING294/103.1, Fixed and moveable jaw294/81.62, Slideable gripping element414/736, Movable grab support has plurality of grabs attached thereto414/776Arm for orienting article is swingable about its transverse axis and is rotatable about its longitudinal axis

Examiners

Primary: Paperner, Leslie J.
Assistant: Kimms, Lyle

Attorney, Agent or Firm

Shlesinger, Arkwright, Garvey & Fado

International Classes

E21B 15/00 (20060101)
E21B 15/04 (20060101)
E21B 19/00 (20060101)
E21B 19/15 (20060101)

Abstract

A cylindrical goods lifting and placement apparatus comprises a platform, an angularly disposable frame pivotably connected to the platform and having a drill pipe holding system for holding a length of drill pipe. An angularly displaceable member is pivotably connected to the platform and has a cylinder and piston assembly for angularly displacing the member from a first position substantially adjacent the holding system. Drill pipe grippers are connected to the member and the grippers are rotatable on an axis from a first position to a second position substantially aligned with the holding system. A drive system for rotating the pipe grippers is provided. Similarly, a drive system for operating the grippers is provided.