Patent · US Expired

Squeezed tube valve

US4369951A · kind A · utility

3Cited by

6References

3Claims

0Family size

Assignee

Hans List · AT

Inventors

Hermann Marsoner · St. Johann in Tirol, AT
Erich Kleinhappl · Graz, AT

Key dates

Filing date	Aug 5, 1981
Grant date	Jan 25, 1983
Priority date	—
Expiry date	Aug 5, 2001

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K7/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In a squeezed tube valve which comprises a valve block with a longitudinal groove to guide a flexible tube and a transverse groove for an electromagnetically actuated clamping bolt to shut off the tube, the crossing between the longitudinal and the transverse groove is rounded off at its edges, and the clamping force exerted by the bolt rises from zero according to an asymptotic rise function over the duration of the shutting action.

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