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:
Mar. 06, 1984
Filed:
Sep. 04, 1981
Borje O Rosaen, Ann Arbor, MI (US);
Other;
Abstract
A fluid flow meter is provided for indicating the fluid flow rate in two or more predetermined flow ranges. The flow meter comprises a housing having an inlet open to a cylindrical inlet chamber and an outlet open to a cylindrical outlet chamber. At least two cross passages in the housing interconnect the inlet and outlet chambers at axially spaced positions. A piston is slidably mounted within the inlet chamber and sequentially opens the cross passages to the inlet chamber in dependence upon the fluid flow rate into the housing inlet. The position of the piston is visible exteriorly of the housing and its position within the inlet chamber provides a visual signal of the fluid flow rate through the flow meter. The piston can be spherical, cylindrical, etc. in shape.