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:
Oct. 13, 1981
Filed:
Nov. 20, 1979
Hiroyuki Amemori, Kawasaki, JP;
Masao Yamada, Kawasaki, JP;
Tokico Ltd., Kawasaki, JP;
Abstract
A turbine meter comprises an axle member supported by a support member within a conduit through which a fluid to be measured is passed and having a small-diameter axle part and an annular recess formed around the small-diameter axle part between a pair of opposed faces, a longitudinal flow passage formed in the axle member, a plurality of discharge holes formed in the axle member to connect communicatively the annular recess and the flow passage, a supply pipe inserted into the conduit through the wall thereof and functioning to supply a pressurized fluid from a pressurized fluid source disposed outside of the conduit to the flow passage in the axle member, a vane wheel comprising a hub disposed around the axle member and within the annular recess with minute gaps therebetween and adapted to rotate in a substantially non-contacting state relative to the small-diameter axle part and a plurality of vanes implantedly fixed at their root parts to the hub, the vane wheel being rotated by a portion of the fluid to be measured and flowing through the conduit, and a discharge passage one end thereof opening at least one of the pair of opposed faces so as to connect the annular recess and the other end thereof opening into the conduit at a position separated from the vanes of the vane wheel. The pressurized fluid passing from the discharge holes into the annular recess is discharged by way of the discharge passage into the conduit at a position separated from the vanes.