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:
Jun. 07, 1983
Filed:
Mar. 19, 1981
Harrison C Smith, Richardson, TX (US);
William J McDonald, Houston, TX (US);
Tele-Drill, Inc., Richardson, TX (US);
Abstract
An insulated point gap assembly for a toroidal coupled telemetry system wherein a drill collar (38), operable to be connected to a lower portion of a drill string (32), carries a toroidal core having primary windings (88) and secondary windings (130). An aperture (154) is laterally fashioned through the drill collar. A conductor (150) is connected to one end of the secondary and extends through the aperture and the other end of the secondary is connected to the drill collar. The conductor is surrounded by an electrical insulation member (152). In a preferred embodiment, an axially extending sleeve of insulating material (156) is applied about the drill collar at the location of the conductor (150) to further isolate the conductor 15 from the drill collar.