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:
Oct. 02, 1979
Filed:
Jun. 19, 1978
Marvin A Goldman, Great Neck, NY (US);
Jerome N Goldman, New York, NY (US);
Arthur Gilmore, Greenlawn, NY (US);
Silvio J DiMarchi, Wychoff, NJ (US);
Penn-Plax Plastics, Inc., Garden City, NY (US);
Abstract
An aquarium thermometer is provided which may be selectively, horizontally positioned at a plurality of depths along a wall of an aquarium tank for comparing the temperatures at different levels to ascertain and to monitor temperature gradients in the tank. The thermometer assembly of the invention includes a water tight house having spaced ferrous components or magnets adjacent the opposite ends of the thermometer scale. A separate positioning handle, having similarly spaced, registerable magnets at its opposite ends, is adapted to cooperate with the thermometer housing on the wall, to cause the thermometer inside the tank to move correspondingly with the handle. The positioning handle and the thermometer housing may mount pairs of oppositely polarized magnets.