Patent · US Expired

Shutoff valve with a conical valve seat

US4607822A · kind A · utility

16Cited by

2References

3Claims

0Family size

Assignee

Kraftwerk Union Aktiengesellschaft · DE

Inventors

Hans-Peter Schabert
Max Heller · Uttenreuth, DE
Erwin Laurer
Hans Leinweber · Schwabach, DE

Key dates

Filing date	May 7, 1984
Grant date	Aug 26, 1986
Priority date	—
Expiry date	May 7, 2004

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K1/12
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A shutoff valve, includes a conical valve seat, and a valve disc movable toward the valve seat in a given direction, the valve disc including a base body covering the valve seat, an annular projection projecting from the base body in the given direction, and a rim formed on the outside of the projection resting against the valve seat in a closed position of the valve, the projection having a region with a given wall thickness in vicinity of the base body and the projection having a free end reinforced to at least 1.5 times the given thickness in the radial direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.