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:
Sep. 20, 1977
Filed:
Jul. 24, 1975
Applicant:
Inventors:
Jerold L Jacoby, Long Beach, CA (US);
William S Tierney, Palos Verdes Peninsula, CA (US);
James E Wright, Long Beach, CA (US);
Pravin G Bhuta, Torrance, CA (US);
Assignee:
TRW Inc., Redondo Beach, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03H / ; G02B / ; G03B / ;
U.S. Cl.
CPC ...
350-35 ; 354286 ;
Abstract
An improved holographic instrument for evaluating the structural integrity of a load-bearing structure by recording on a holographic recording medium two successive holograms of the structure under differing stress conditions to produce a holographic interferogram containing information defining a deformation fringe pattern representing the deformations in the structure resulting from the change in stress conditions. A holographic recording unit for the optical signature instrument and for general holographic recording use.