Patent ID: 7171886
Filing Date: 2007-02-06
Classification: F41A,F41F

Abstract:
1. A pipe mortar comprising: a pipe and a base that are screwed together, between which axial relative movements occur during firing; and a sealing element having a radially outwardly extending portion disposed between and contacting end surfaces of the pipe and the base, the sealing element having an elastic deformity that balances out axial relative movement between the pipe and the base, wherein the sealing element is an angle sealing ring with an L-shaped cross-section, and is pressed onto one of the pipe and the base with a loose press-fit, with one leg of the ring extending radially inwardly and being prestressed by the base end surface to produce a gas-tight connection when the pipe and the base are screwed together, and with another leg of the ring extending axially in the form of a sealing lip to elastically absorb changes in length between the pipe and the base that occur in the transverse (X)- and axial (Y)-axes during firing.