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. 08, 1979
Filed:
Sep. 22, 1977
Applicant:
Inventors:
Helmut Winnacker, Burgdorf, DE;
Jurgen Dierssen, Barsinghausen, DE;
Assignee:
Preussag Aktiengesellschaft, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G01S / ;
U.S. Cl.
CPC ...
354 64 ; 340 / ; 181124 ;
Abstract
An underwater camera in a pressure tight housing and a release mechanism for releasing the shutter at a predetermined distance from the sea bed. The release mechanism includes a transducer on the housing exterior for transmitting ultrasonic signals and receiving echo signals and an electronic circuit on the interior of the housing for opening the shutter in response to the echo signals when the camera has reached the predetermined distance from the sea bed.