Patent · US Expired

Dispensing valve

US4061254A · kind A · utility

27Cited by
7References
2Claims
0Family size

Assignee

Inventor

Key dates

Filing dateApr 1, 1975
Grant dateDec 6, 1977
Priority date—
Expiry dateApr 1, 1995

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB65D47/2081
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A valve intended to open in response to a pressure difference between the interior of the valve and the exterior thereof comprises a diaphragm which in its closing position is conical. The diaphragm has an opening which is normally closed by means of a valve stem. Arrangements are made to prevent communication between the interior of the valve and the exterior thereof until said diaphragm has been deformed to a substantially planar shape.

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