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. 15, 1976
Filed:
Oct. 11, 1974
Applicant:
Inventor:
Samuel J Sero, Pittsburgh, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
52158 ; 52159 ; 61 4 / ; 85 65 ; 166 63 ;
Abstract
An apparatus is provided for expandably engaging the walls of an earthen hole in order to resist movement urged by an external force. After placement of the apparatus into an earthen hole at a location where some external force is to be restrained, the detonation of an explosive charge drives a piston out of an explosion chamber, and by a wedging action, forces an axially segmented cylinder outwardly against the surrounding earth. A substantially stable connecting foundation is thus created in order to resist either tensile or compressive forces.