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:
May. 05, 1987
Filed:
Apr. 30, 1985
Applicant:
Inventors:
Hiroshi Koh, Kyoto, JP;
Takashi Tokuyama, Souraku, JP;
Assignee:
Fujitec Co., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73655 ; 340601 ;
Abstract
The disclosure is directed to an improved a seismic detector comprising: a container for containing liquid therein, liquid means being contained in the bottom of the container, a source of light for illuminating the inside of the container, a sensor means having at least one photoelectric device for transforming the light inside the container into electric signals, and a signal processor means for generating an output when the output of the sensor means exceeds a predetermined value.