Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F16
ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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F16K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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31/00
Actuating devices;; Operating means; Releasing devices
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F16K31/44
Mechanical actuating means
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F16K31/50
with screw-spindle; or internally threaded actuating means
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F16K31/504
the actuating means being rotable, rising, and having internal threads which co-operate with threads on the outside of the valve body
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