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. 20, 1984
Filed:
Jan. 25, 1982
William G Karjalainen, Tallassee, AL (US);
Neptune Water Meter Company, Tallassee, AL (US);
Abstract
This compound flow meter includes a high capacity meter and a low capacity meter connected in parallel with it. The flow through the high capacity meter is controlled by a main valve subject to the pressure difference across the meter and biased closed by a spring. The flow through the low capacity meter is controlled by an auxiliary valve. Mounted on the main valve is a means responsive to the pressure difference across it and moving in the same direction as the main valve in response to that pressure difference. That pressure difference responsive means operates a piston which is aligned with the auxiliary valve, so that the operation of the auxiliary valve is determined by the sum of the movements of the main valve and the pressure difference responsive means.