Penn-plax Plastics, Inc.

Arthur Gilmore

Marvin A Goldman

Jerome N Goldman

Silvio J Di Marchi

Silvio J DiMarchi

Kenneth Kaplan

Aquarium thermometer

Magnetic aquarium thermometer

Aquarium pump housing

Disclosed herein is a modular aquarium apparatus generally comprising a watertight housing which suspends a glass thermometer safely therein. The housing includes a ballast chamber carrying a weight of predetermined characteristics sufficient to provide the housing with sufficient negative bouyancy such that the housing, without more, will float at the top of an aquarium with the lower portions of the housing submerged. With the addition of a special sinking sub-assembly carrying additional ballast the aforementioned thermometer housing may be converted into a sinkable housing for measuring temperatures at the bottom of the aquarium. Alternatively, the housing may be provided with a special cap and hanger arrangement for converting the housing into a hanging thermometer assembly adapted to be suspended from the upper wall portions of an aquarium tank.

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.

Growing community of inventors

Greenlawn, NY, United States of America

Arthur Gilmore