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:
Mar. 11, 1980
Filed:
Jul. 17, 1978
Applicant:
Inventors:
Donald H Van Steenwyk, San Marino, CA (US);
John R Cash, Pasadena, CA (US);
Paul W Ott, Pasadena, CA (US);
Assignee:
Applied Technologies Associates, San Marino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; G01C / ;
U.S. Cl.
CPC ...
33313 ; 33323 ;
Abstract
Survey apparatus and method employs a free gyroscope for fast determination of azimuth, free gyroscope alignment being periodically corrected by a rate gyroscope which is periodically rotated for accurate azimuth determination. An accelerometer is also usable in conjunction with the gyroscopes for tilt determination.