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. 28, 1976
Filed:
Mar. 28, 1975
Applicant:
Inventor:
Gary Norris Langlois, Richland, WA (US);
Assignee:
Holosonics, Inc., Richland, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01S / ;
U.S. Cl.
CPC ...
340 / ; 73 6 / ;
Abstract
An improved detector having a reflective surface which is substantially insensitive to vibration. The detection surface comprises a thin layer of liquid metal which is disposed over a substantially rigid, wettable substrate. In a presently preferred embodiment, the detector comprises a receptacle having disposed therein a rigid brass plate covered by a thin layer of mercury. The detector is submersed in a suitable fluid, such as water, to which an acidic substance has been added to reduce the pH of the fluid to the range of 5 to 6.