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:
Aug. 31, 1982
Filed:
Mar. 24, 1980
Nils O Rosaen, Hazel Park, MI (US);
Other;
Abstract
A flow meter is provided having a housing with inlet and outlet ports respectively adapted to be connected with a source of fluid pressure and a fluid user. A semicircular vane member mounted within the housing is movable in response to a change in the flow rate between the inlet and outlet ports to rotate a shaft to which the vane member is attached. The shaft, in turn, extends externally of the housing and is operatively coupled to an indicator for providing an external visual indication of the rate of fluid flow through the flow meter. The improvement, however, comprises a unitary spring seal having a first portion rigidly secured to the housing and a second portion which extends between the housing and the vane shaft. This second portion extends along the shaft within the housing and is resiliently urged against the outer peripheral surface of the shaft in order to prevent fluid leakage between the vane shaft and the housing.