F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16N—LUBRICATING
F16N13/00—Lubricating-pumps
F16N13/02—Lubricating-pumps with reciprocating piston
Transformation or rotary movement to linear movement - uses threaded shaft to displace nut linearly and has transformers or capacitive detectors to measure nut movement