US 11,926,108 B2
Method and apparatus for sealing a test space in a workpiece
Joerg Juskowiak, Dirlewang (DE); Michael Klausner, Buchloe (DE); and Christian Lisiecki, Kaufbeuren (DE)
Assigned to GROB-WERKE GmbH & Co. KG, Mindelheim (DE)
Filed by GROB-WERKE Gmbh & Co. KG, Mindelheim (DE)
Filed on Apr. 2, 2021, as Appl. No. 17/221,198.
Claims priority of application No. 102020109576.7 (DE), filed on Apr. 6, 2020.
Prior Publication US 2021/0308957 A1, Oct. 7, 2021
Int. Cl. B29C 65/00 (2006.01); F16J 15/06 (2006.01)
CPC B29C 66/83 (2013.01) [B29C 66/816 (2013.01); F16J 15/06 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An apparatus for sealing a test space in a workpiece, the workpiece having at least one open end face, via which the test space is open to the environment of the workpiece, and the open end face having a flat surface with one or more indentations in the workpiece, using a sealing mat having a planar basic body for sealing the flat surface of the open end face of the workpiece, wherein one or more arcuate sealing elements are provided on a side of the sealing mat facing the workpiece for sealing the one or more indentations in the flat surface of the open workpiece end face, the apparatus comprising:
a pressing mechanism for pressing the one or more arcuate sealing elements into the one or more indentations with pressing forces in several directions radial to the arcuate shape of the sealing elements;
said pressing mechanism comprising a pressing shell being insertable into the sealing element through a recess in the basic body of the sealing mat in the area of the sealing element to exert the radial pressing forces onto the arcuate sealing element against the curved surface of the indentation via this pressure shell; and
said pressing mechanism comprising a holder and a pressure spring between the holder and a summit of the pressing shell.