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:
Feb. 27, 1979
Filed:
Nov. 29, 1976
Arthur Lenk, Essen-Borbeck, DE;
STEAG Aktiengesellschaft, Essen, DE;
Abstract
A flow-limiting device for a pipe carrying a fluid or gaseous medium, comprising a flap, means mounting the flap in the pipe for pivotal movement in a manner to vary the cross-sectional area of flow through the pipe, and spring means urging the flap in a direction to increase the cross-sectional area of flow and against the direction of flow through the pipe, so that the flap varies the cross-sectional area of flow through the pipe in dependence on the kinetic energy differential of the medium upstream and downstream of the flap. The spring means comprise a leaf spring one end of which is mounted in an upper part of a housing for insertion in the pipe and the other end of which carries the flap. There is a clearance beneath the lower edge of the flap to permit the passage of deposits in the medium past the flap in all positions thereof.