Scott Ray Maltby

US Patent:

20090053013, Feb 26, 2009

Filed:

Aug 18, 2008

Appl. No.:

12/193309

Inventors:

Scott R. Maltby - Bakersfield CA, US

International Classification:

E21B 19/15

US Classification:

414 2261

Abstract:

A pipe handling apparatus transfers successive lengths of drill pipe that are stored in a generally horizontal position on a pipe rack, to an elevated position on the rig deck of an oil and gas well drill rig. An elongated frame includes a base section with a folding section that can be inclined. Both the base and folding sections provide toothed racks. A trestle section travels from the base section toward the inclined section. Pinion gears at opposed end portions of the trestle section engage the toothed racks of the base and folding sections. The trestle section gradually increases in inclination as its front end portion travels toward and up hoisting rails of the inclined folding section. While the rear end of the trestle section remains on the base section, the front end portion of the trestle section climbs the toothed racks of the inclined rails.