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:
Jul. 27, 2004
Filed:
Dec. 18, 2001
Applicant:
Inventor:
James P. O'Shea, Riverside, RI (US);
Assignee:
MIJA Industries, Inc., Rockland, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 2/356 ; G01F 2/336 ; G01F 2/330 ; G08B 2/100 ;
U.S. Cl.
CPC ...
G01F 2/356 ; G01F 2/336 ; G01F 2/330 ; G08B 2/100 ;
Abstract
A tank liquid level or volume gauge for use with volatile materials, such as propane, stored under pressure as liquid and released as gas, includes a float with a float magnet that couples with a liquid level indicator magnet across a fluid impermeable wall to provide indication of tank liquid level or volume. In another embodiment, when a predetermined tank liquid level or volume is reached during filling, the float actuates an inlet closure valve to increase inlet flow resistance, creating a shutoff signal.