CPC Main Group
F01L 3/00 Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
10 direct subcodes
Child Classifications
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- F01L 3/02 Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
- F01L 3/06 Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge (for rotating lift-valves F01L1/32)
- F01L 3/08 Valves guides; Sealing of valve stem, e.g. sealing by lubricant
- F01L 3/10 Connecting springs to valve members
- F01L 3/12 Cooling of valves
- F01L 3/20 Shapes or constructions of valve members, not provided for in preceding subgroups of this group
- F01L 3/22 Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
- F01L 3/24 Safety means or accessories, not provided for in preceding sub- groups of this group