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. 21, 1978
Filed:
Jun. 24, 1976
Applicant:
Inventor:
Adriaan B Mann, Delft, NL;
Assignee:
Goudsche Machinefabriek B.V., Gouda, NL;
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
73151 ;
Abstract
A probing device for investigating earth pressures including a drill tube having therein at least one linear displacement meter, including a feeler, inserted in an elastic measuring cylinder sensitive to earth pressure exerted on the drill tube, the feeler interacting with a stop element abutting the elastic measuring cylinder. The probing device includes a thrust cone for sensing soil pressure and a shiftable portion of the casing of the drill tube for sensing holding compression. An additional linear displacement meter and a continuously horizontal stop surface may be utilized for measuring inclination of the device.