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:
Dec. 23, 1980
Filed:
Sep. 27, 1979
John F Nelson, New Lenox, IL (US);
Illinois Tool Works Inc., Chicago, IL (US);
Abstract
There is disclosed a new and improved combined liquid level indicator and hydrometer which includes a light transmitting member having an indicating surface and a reflector surface. The reflector surface is adapted to be submerged in liquid for reflecting light to the indicating surface when the liquid is below a predetermined level. The liquid level indicator and hydrometer further includes a chamber aligned with and partially receiving the reflector surface. The chamber confines and positions a float member relative to the reflector surface for being viewed through the indicating surface responsive to the relative specific gravity of the liquid. A connection means carried by the chamber supports the light transmitting member and aligns the reflector surface with respect to the chamber. The chamber is initially formed in an open condition adapted for accepting the float member therein and is lockable thereafter for capturing the float member within the chamber. As a result, the chamber is arranged to receive the float member and confine the float member therein independently of the mounting of the light transmitting member to the chamber.