F01L 1/00 Valve-gear or valve arrangements, e.g. lift-valve gear (lift-valve and valve-seat assemblies per se F01L3/00; slide-valve gear F01L5/00; actuated non-mechanically F01L9/00; valve arrangements in working piston or piston rod F01L11/00; modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations F01L13/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Valve-gear or valve arrangements, e.g. lift-valve gear
CPC: Valve-gear or valve arrangements, e.g. lift-valve gear (lift-valve and valve-seat assemblies per se F01L3/00; slide-valve gear F01L5/00; actuated non-mechanically F01L9/00; valve arrangements in working piston or piston rod F01L11/00; modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations F01L13/00)
Full Title
Full titles differ between systems:
Valve-gear or valve arrangements, e.g. lift-valve gear
Valve-gear or valve arrangements, e.g. lift-valve gear (lift-valve and valve-seat assemblies per se F01L3/00; slide-valve gear F01L5/00; actuated non-mechanically F01L9/00; valve arrangements in working piston or piston rod F01L11/00; modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations F01L13/00)
IPC and CPC are identically structured here. All 11 subcodes exist in both systems.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
Navigate with arrow keys, Enter to open
- F01L 1/02 Valve drive (transmitting-gear between valve drive and valve F01L1/12) +4 CPC IPC+CPC Available in IPC and CPC
- F01L 1/12 Transmitting gear between valve drive and valve (simultaneously operating two or more valves F01L1/26) IPC+CPC Available in IPC and CPC
- F01L 1/26 characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder (with coaxial valves F01L1/28) +3 CPC IPC+CPC Available in IPC and CPC
- F01L 1/28 characterised by the provision of coaxial valves; characterised by the provision of valves co-operating with both intake and exhaust ports +1 CPC IPC+CPC Available in IPC and CPC
- F01L 1/30 characterised by the provision of positively opened and closed valves, i.e. desmodromic valves IPC+CPC Available in IPC and CPC
- F01L 1/32 characterised by the provision of means for rotating lift valves, e.g. to diminish wear IPC+CPC Available in IPC and CPC
- F01L 1/34 characterised by the provision of means for changing the timing of the valves without changing the duration of opening IPC+CPC Available in IPC and CPC
- F01L 1/36 peculiar to machines or engines of specific type other than four-stroke cycle IPC+CPC Available in IPC and CPC
- F01L 1/44 Multiple-valve gear or arrangements, not provided for in preceding subgroups, e.g. with lift and different valves +2 CPC IPC+CPC Available in IPC and CPC
- F01L 1/46 Component parts, details, or accessories, not provided for in preceding subgroups +2 CPC IPC+CPC Available in IPC and CPC