| 摘要 |
1. An ancillary control device for a closed hydraulic system, in particular for a lifting means for frontmounted equipment on tractors, comprising at least one control spool (10, 11) whose travel movement is restricted by a screwthreaded pin (12, 13) which projects through an opening (16, 17) in the housing of the ancillary control device, characterised in that for the purposes of arresting the adjustable screwthreaded pin (12, 13) when set to a given position in the opening (16, 17) in the housing and for sealing off the opening (16, 17) in the housing with respect to oil issuing therefrom there is exclusively provided an at least region wise coating (18, 19) of microencapsulated permanently plastic synthetic resin on the screwthread (14, 15) of the screwthreaded pin (12, 13). |
