| 摘要 |
1518493 Ignition plugs ROBERT BOSCH GmbH 4 March 1977 [6 March 1976] 09121/77 Heading F1B [ Also in Division B3] In an ignition plug, e.g. a flame igniter or glow plug, a gas-tight connection between a thin-walled metallic heating rod shell 13, and the plug housing 11 is formed by providing an interference fit between the shell and a longitudinal bore 21 of the housing from which tooling marks have been removed, e.g. by spherical calibration, the shell and housing being assembled by pressing. |
