The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1977
Filed:
Jul. 07, 1975
Theodore B Houck, Tulsa, OK (US);
Parker Drilling Company, Inc., Tulsa, OK (US);
Abstract
An improved portable drilling rig for drilling deep boreholes in the earth, in which the table or working floor of the rig, on which the rotary table and draw works are supported, is on a separate framework supported on and attached to a structural frame or base, for the drilling rig. The floor structure is broken down into a plurality of parts for ease in transportation, each of which have independent columns and cross-bracing. The central portion of the floor which supports the rotary table, and which must support the full weight of the drill pipe, has special heavy columns which are supported on a structural base in substantially the same position as the base connection of the mast, when in a raised position. Therefore, weight can be transferred from the rotary table to the crown block and vice versa, and the weight is still applied to the base frame in substantially the same position.