Patent · US Active

Non-return valve for a resin injection system and resin injection system incorporating same

US9570894B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Bernd Schubert · Cologne, DE
Werner Roehling · Neuss, DE
Rolf Karkowski · Neuss, DE

Key dates

Filing date	Mar 1, 2013
Grant date	Feb 14, 2017
Priority date	—
Expiry date	Nov 20, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2045/14557
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The present invention provides a non-return valve for a resin injection system, especially for use in electrical cable joints, comprising: a valve housing which includes an outlet for a fluid flowing through the valve; and a valve body which is held by the valve housing and is freely movable between a closed position, in which the outlet is substantially sealed or closed to fluid flow by the valve body, and an open position, in which the outlet is substantially open to fluid flow. Thus, with the present invention, the valve body can be loosely held by the valve housing and the valve need not include any spring means to bias the valve body to the closed position. The invention also provides a resin injection system for sealing a localized breach in an object, such as an electrical cable joint.

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