F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16N—LUBRICATING
F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
F16N21/06—Covering members for nipples, conduits or apertures
Landscapes
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Closing And Opening Devices For Wings, And Checks For Wings
(AREA)