|Publication number||USD519136 S1|
|Application number||US 29/208,314|
|Publication date||Apr 18, 2006|
|Filing date||Jun 24, 2004|
|Priority date||Jun 7, 2004|
|Also published as||USD523210, USD532798, USD533196|
|Publication number||208314, 29208314, US D519136 S1, US D519136S1, US-S1-D519136, USD519136 S1, USD519136S1|
|Inventors||Robert Alden Folk, Steven Lorne Folk|
|Original Assignee||Varco I/P, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Non-Patent Citations (9), Classifications (1) |
|External Links: USPTO, USPTO Assignment, Espacenet|
Swivel body for a top drive in a wellbore derrick
US D519136 S1
The ornamental design for a swivel body for a top drive in a wellbore derrick, as shown and described.
FIG. 1 is a perspective view of a design for a swivel body according to the present invention.
FIG. 2 is a top view of the swivel body of FIG. 1.
FIG. 3 is a first side view of the swivel body of FIG. 1.
FIG. 4 is a bottom view of the swivel body of FIG. 1.
FIG. 5 is a second side view of the swivel body of FIG. 1, opposite the first side shown in FIG. 3.
FIG. 6 is a front view of the swivel body of FIG. 1; and,
FIG. 7 is a rear view of the swivel body of FIG. 1.
|1||1000 Ton AC Top Drive-TDS-1000, Varco Systems, 2 pp., 2002.|
|2||500 Ton DC Top Drive IDS-1, Varco Systems, 2 pp., 2002.|
|3||750 Ton DC Top Drive TDS-45, Varco Systems, 2 pp., 2002.|
|4||AC Top Drive Technology Update #2, Varco Systems, 1 p. Prior to 2002.|
|5||An Overview of Top-Drive Drilling Systems Applications and Experiences, G.I. Boyadjieff, IADC/SPE 14716, 8 pp. 1986.|
|6||Challenger Rig & Mfg., Inc., Doghouse, Composite Catalog 1982-83, p. 1984-C, 1982.|
|7||Top Drive Drilling System TD 500 PAC Variable Frequency AC Top Drive, National Oilwell, 6 pp., 2002.|
|8||Varco Pioneers AC Top Drive, Engineering Award Winners, AC Top Drive Technology Update #1, Hart's Petroleum Engineer, 4 pp., Apr. 1997.|
|9||Varco's Top Drive Systems are advancing the technology of drilling, Varco Systems, 8 pp., 2001.|