|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

ENGINES AND PUMPS

|  | F01 |
MACHINES OR ENGINES IN GENERAL (combustion engines Fulltext... Hierarchy... Expanded...F02; machines for liquids Fulltext... Hierarchy... Expanded...F03, Fulltext... Hierarchy... Expanded...F04); ENGINE PLANTS IN GENERAL; STEAM ENGINES

|  | F01L |
CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES (valves in general Fulltext... Hierarchy... Expanded...F16K)

|  | F01L |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01, especially Note 2 (b). As regards Note 2 (b), attention is drawn to Fulltext... Hierarchy... Expanded...F01B 3/10, Fulltext... Hierarchy... Expanded...F01B 15/06, Fulltext... Hierarchy... Expanded...F01C 21/12, Fulltext... Hierarchy... Expanded...F02B 53/06, Fulltext... Hierarchy... Expanded...F03C 1/08, Fulltext... Hierarchy... Expanded...F04B 1/18, Fulltext... Hierarchy... Expanded...F04B 7/00, Fulltext... Hierarchy... Expanded...F04B 39/08, Fulltext... Hierarchy... Expanded...F04B 39/10, and Fulltext... Hierarchy... Expanded...F04C 15/02, Fulltext... Hierarchy... Expanded...F04C 29/08.

|  | F01L 1/00 - F01L 13/00 |
Valve-gear for internal-combustion piston engines or for other machines or engines with positive working-fluid displacement (valve-gear specially for steam engines or specially for other machines or engines with variable fluid distribution Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01L 15/00-F01L 35/00)

|  | F01L 1/00 |
Valve-gear or valve arrangements, e.g. lift-valve gear (lift valve and valve seat assemblies per se Fulltext... Hierarchy... Expanded...F01L 3/00; slide-valve gear Fulltext... Hierarchy... Expanded...F01L 5/00; actuated non-mechanically Fulltext... Hierarchy... Expanded...F01L 9/00; valve arrangements in working piston or piston-rod Fulltext... Hierarchy... Expanded...F01L 11/00; modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations Fulltext... Hierarchy... Expanded...F01L 13/00)

|  | F01L 1/02 |
· | Valve drive (transmitting-gear between valve drive and valve Fulltext... Hierarchy... Expanded...F01L 1/12)

|  | F01L 1/04 |
· · | by means of cams, camshafts, cam discs, eccentrics, or the like (Fulltext... Hierarchy... Expanded...F01L 1/10 takes precedence)

|  | F01L 1/06 |
· · · | the cams, or the like, rotating at a higher speed than that corresponding to the valve cycle, e.g. operating four-stroke engine valves directly from crankshaft

|  | F01L 1/08 |
· · · | Shape of cams

|  | F01L 1/10 |
· · | by means of crank- or eccentric-driven rods

|  | F01L 1/12 |
· | Transmitting-gear between valve drive and valve (simultaneously operating two or more valves Fulltext... Hierarchy... Expanded...F01L 1/26)

|  | F01L 1/14 |
· · | Tappets; Push-rods

|  | F01L 1/16 |
· · · | Silencing impact; Reducing wear

|  | F01L 1/18 |
· · | Rocking arms or levers

|  | F01L 1/20 |
· | Adjusting or compensating clearance

|  | F01L 1/22 |
· · | automatically, e.g. mechanically

|  | F01L 1/24 |
· · · | by fluid means, e.g. hydraulically

|  | 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 Fulltext... Hierarchy... Expanded...F01L 1/28)

|  | F01L 1/28 |
· | characterised by the provision of coaxial valves; characterised by the provision of valves co-operating with both intake and exhaust ports

|  | F01L 1/30 |
· | characterised by the provision of positively opened and closed valves, i.e. desmodromic valves

|  | F01L 1/32 |
· | characterised by the provision of means for rotating lift valves, e.g. to diminish wear

|  | F01L 1/34 |
· | characterised by the provision of means for changing the timing of the valves without changing the duration of opening

|  | F01L 1/36 |
· | peculiar to machines or engines of specific type other than four-stroke cycle

|  | F01L 1/38 |
· · | for engines with other than four-stroke cycle, e.g. with two-stroke cycle (Fulltext... Hierarchy... Expanded...F01L 1/26, Fulltext... Hierarchy... Expanded...F01L 1/28 take precedence)

|  | F01L 1/40 |
· · | for engines with scavenging charge near top dead-centre position, e.g. by overlapping inlet and exhaust time (scavenging aspects Fulltext... Hierarchy... Expanded...F02B)

|  | F01L 1/42 |
· · | for machines or engines characterised by cylinder arrangement, e.g. star or fan

|  | F01L 1/44 |
· | Multiple-valve gear or arrangements, not provided for in preceding sub-groups, e.g. with lift and different valves

|  | F01L 1/46 |
· | Component parts, details, or accessories, not provided for in preceding sub-groups

|  | F01L 3/00 |
Lift valves, 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

|  | F01L 3/02 |
· | Selecting particular materials for valve members or valve seats; Valve members or valve seats composed of two or more materials

|  | F01L 3/04 |
· · | Coated valve members or valve seats

|  | 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 Fulltext... Hierarchy... Expanded...F01L 1/32)

|  | F01L 3/08 |
· | Valve 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 3/14 |
· · | by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve

|  | F01L 3/16 |
· · | by means of a fluid flowing through or along valve, e.g. air (for sealing only Fulltext... Hierarchy... Expanded...F01L 3/08)

|  | F01L 3/18 |
· · · | Liquid cooling of valve

|  | F01L 3/20 |
· | Shapes or constructions of valve members, not provided for in preceding sub-groups of this group

|  | F01L 3/22 |
· | Valve seats not provided for in preceding sub-groups of this group; Fixing of valve seats

|  | F01L 3/24 |
· | Safety means or accessories, not provided for in preceding sub-groups of this group

|  | F01L 5/00 |
Slide-valve gear or valve arrangements (with pure rotary or oscillatory movement Fulltext... Hierarchy... Expanded...F01L 7/00)

|  | F01L 5/02 |
· | with other than cylindrical, sleeve, or part-annularly-shaped valves, e.g. with flat-type valves

|  | F01L 5/04 |
· | with cylindrical, sleeve, or part-annularly-shaped valves

|  | F01L 5/06 |
· · | surrounding working cylinder or piston

|  | F01L 5/08 |
· · · | Arrangements with several movements or several valves, e.g. one valve inside the other (with part-annularly-shaped valves Fulltext... Hierarchy... Expanded...F01L 5/12)

|  | F01L 5/10 |
· · · · | with reciprocating and other movement of same valve

|  | F01L 5/12 |
· · · | Arrangements with part-annularly-shaped valves

|  | F01L 5/14 |
· | characterised by the provision of valves with reciprocating and other movements (surrounding working cylinder or piston Fulltext... Hierarchy... Expanded...F01L 5/06)

|  | F01L 5/16 |
· · | with reciprocating and other movement of same valve, e.g. longitudinally and in cross direction of working cylinder

|  | F01L 5/18 |
· · | with reciprocatory valve and other slide valve

|  | F01L 5/20 |
· | specially for two-stroke engines (Fulltext... Hierarchy... Expanded...F01L 5/06 and Fulltext... Hierarchy... Expanded...F01L 5/14 take precedence)

|  | F01L 5/22 |
· | Multiple-valve arrangements (with valves surrounding working cylinder or piston Fulltext... Hierarchy... Expanded...F01L 5/06; with reciprocatory and other slide valves Fulltext... Hierarchy... Expanded...F01L 5/18; specially for two-stroke engines Fulltext... Hierarchy... Expanded...F01L 5/20)

|  | F01L 5/24 |
· | Component parts, details, or accessories, not provided for in preceding sub-groups of this group

|  | F01L 7/00 |
Rotary or oscillatory slide-valve gear or valve arrangements (slide valves with combined rotary and non-rotary movements, combinations of rotary and non-rotary slide valves Fulltext... Hierarchy... Expanded...F01L 5/00)

|  | F01L 7/02 |
· | with cylindrical, sleeve, or part-annularly-shaped valves (of disc type Fulltext... Hierarchy... Expanded...F01L 7/06; of conical type Fulltext... Hierarchy... Expanded...F01L 7/08)

|  | F01L 7/04 |
· · | surrounding working cylinder or piston

|  | F01L 7/06 |
· | with disc-type valves

|  | F01L 7/08 |
· | with conically- or frusto-conically-shaped valves

|  | F01L 7/10 |
· | with valves of other specific shape, e.g. spherical

|  | F01L 7/12 |
· | specially for two-stroke engines (Fulltext... Hierarchy... Expanded...F01L 7/04 takes precedence)

|  | F01L 7/14 |
· | Multiple-valve arrangements (with valves surrounding working cylinder or piston Fulltext... Hierarchy... Expanded...F01L 7/04; specially for two-stroke engines Fulltext... Hierarchy... Expanded...F01L 7/12)

|  | F01L 7/16 |
· | Sealing or packing arrangements specially therefor

|  | F01L 7/18 |
· | Component parts, details, or accessories, not provided for in preceding sub-groups of this group

|  | F01L 9/00 |
Valve-gear or valve arrangements actuated non-mechanically

|  | F01L 9/02 |
· | by fluid means, e.g. hydraulic

|  | F01L 9/04 |
· | by electric means

|  | F01L 11/00 |
Valve arrangements in working piston or piston-rod

|  | F01L 11/02 |
· | in piston

|  | F01L 11/04 |
· · | operated by movement of connecting-rod

|  | F01L 11/06 |
· · · | operating oscillatory valve

|  | F01L 13/00 |
Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations

|  | F01L 13/02 |
· | for reversing

|  | F01L 13/04 |
· | for starting by means of fluid pressure

|  | F01L 13/06 |
· | for braking

|  | F01L 13/08 |
· | for decompression, e.g. during starting; for changing compression ratio

|  | F01L 15/00 - F01L 31/00 |
Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, specially for steam engines, or specially for other machines or engines with variable working-fluid distribution

|  | F01L 15/00 - F01L 31/00 |
Note(s) The groups under this guide heading do not fully embrace subject-matter restricted to rotary, oscillatory, or lift-valve gear or valve arrangements, classified in groups Fulltext... Hierarchy... Expanded...F01L 33/00 and Fulltext... Hierarchy... Expanded...F01L 35/00. However, the present groups do embrace the following subject-matter thereof: valve drives or means external to valves for adjustment during operation, tripping-gear, reversing-gear, use of pistons or piston-rods as valves or as valve-supporting elements, valve-gear or valve arrangements peculiar to free-piston machines or engines.

|  | F01L 15/00 |
Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01L 17/00-F01L 29/00 (valve drive or external valve-adjustment during operation, see the relevant groups, e.g. Fulltext... Hierarchy... Expanded...F01L 31/00; tripping-gear or tripping of valves Fulltext... Hierarchy... Expanded...F01L 31/00)

|  | F01L 15/02 |
· | with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves

|  | F01L 15/04 |
· · | main valve being combined with auxiliary valve (of drag-valve type Fulltext... Hierarchy... Expanded...F01L 15/10)

|  | F01L 15/06 |
· · · | of Meyer or Rider type, i.e. in which the expansion is varied at the expansion valve itself

|  | F01L 15/08 |
· | with cylindrical, sleeve, or part-annularly-shaped valves; Such main valves combined with auxiliary valves

|  | F01L 15/10 |
· | with main slide valve and auxiliary valve dragged thereby

|  | F01L 15/12 |
· | characterised by having means for effecting pressure equilibrium between two different cylinder spaces at idling

|  | F01L 15/14 |
· | Arrangements with several co-operating main valves, e.g. reciprocatory and rotary

|  | F01L 15/16 |
· · | with reciprocatory slide valves only

|  | F01L 15/18 |
· | Valve arrangements not provided for in preceding sub-groups of this main group

|  | F01L 15/20 |
· | Component parts, details, or accessories, not provided for in preceding sub-groups of this group

|  | F01L 17/00 |
Slide-valve gear or valve arrangements with cylindrical, sleeve, or part-annularly-shaped valves surrounding working cylinder or piston

|  | F01L 17/02 |
· | Drive, or adjustment during operation, peculiar thereto, e.g. for reciprocating and oscillating movements or for several valves one inside the other

|  | F01L 19/00 |
Slide-valve gear or valve arrangements with reciprocatory and other movement of same valve, other than provided for in group Fulltext... Hierarchy... Expanded...F01L 17/00, e.g. longitudinally of working cylinder and in cross direction

|  | F01L 19/02 |
· | Drive, or adjustment during operation, peculiar thereto

|  | F01L 21/00 |
Use of working pistons or piston-rods as fluid-distributing valves or as valve-supporting elements, e.g. in free-piston machines

|  | F01L 21/02 |
· | Piston or piston-rod used as valve member

|  | F01L 21/04 |
· | Valves arranged in or on piston or piston-rod

|  | F01L 23/00 |
Valves controlled by impact of piston, e.g. in free-piston machines

|  | F01L 25/00 |
Drive, or adjustment during operation, of distribution or expansion valves by non-mechanical means

|  | F01L 25/02 |
· | by fluid means

|  | F01L 25/04 |
· · | by working fluid of machine or engine, e.g. free-piston machine

|  | F01L 25/06 |
· · · | Arrangements with main and auxiliary valves, at least one of them being fluid-driven

|  | F01L 25/08 |
· | by electric or magnetic means

|  | F01L 27/00 |
Distribution or expansion-valve gear peculiar to free-piston machines or engines and not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01L 21/00-F01L 25/00

|  | F01L 27/02 |
· | the machine or engine having rotary or oscillatory valves

|  | F01L 27/04 |
· | Delayed-action controls, e.g. of cataract- or dash-pot-type

|  | F01L 29/00 |
Reversing-gear (equally usable for control of degree of working fluid admission, and reversing being of secondary importance Fulltext... Hierarchy... Expanded...F01L 31/00)

|  | F01L 29/02 |
· | by displacing eccentric

|  | F01L 29/04 |
· | by links or guide rods

|  | F01L 29/06 |
· | by interchanging inlet and exhaust ports

|  | F01L 29/08 |
· | specially for rotary or oscillatory valves

|  | F01L 29/10 |
· | Details, e.g. drive

|  | F01L 29/12 |
· · | Powered reverse gear

|  | F01L 31/00 |
Valve drive, valve adjustment during operation, or other valve control, not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01L 15/00-F01L 29/00 (sensing elements measuring the variable or condition to be controlled or regulated Fulltext... Hierarchy... Expanded...F01B)

|  | F01L 31/02 |
· | with tripping-gear (for oscillatory valves Fulltext... Hierarchy... Expanded...F01L 31/06); Tripping of valves

|  | F01L 31/04 |
· · | with positively-driven trip levers

|  | F01L 31/06 |
· | with tripping-gear specially for oscillatory valves; Oscillatory tripping-valves, e.g. of Corliss type

|  | F01L 31/08 |
· | Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear

|  | F01L 31/10 |
· · | the drive being effected by eccentrics (Fulltext... Hierarchy... Expanded...F01L 31/14 takes precedence)

|  | F01L 31/12 |
· · · | Valve adjustment by displacing eccentric

|  | F01L 31/14 |
· · | Valve adjustment by links or guide rods, e.g. in valve-gears with eccentric drive

|  | F01L 31/16 |
· · | the drive being effected by specific means other than eccentric, e.g. cams; Valve adjustment in connection with such drives

|  | F01L 31/18 |
· · | specially for rotary or oscillatory valves

|  | F01L 31/20 |
· · · | Valve adjustment

|  | F01L 31/22 |
· · | specially for lift valves

|  | F01L 31/24 |
· · · | Valve adjustment

|  | F01L 33/00 - F01L 35/00 |
Rotary or oscillatory slide-valve gear or lift-valve gear or such valve arrangements specially for steam engines or specially for other machines or engines with variable working-fluid distribution (drive, adjustment during operation, tripping-gear, reversing-gear, use of working pistons or piston-rods as valves or as valve-supporting elements, valve-gear or valve arrangements peculiar to free-piston machines or engines Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01L 15/00-F01L 31/00)

|  | F01L 33/00 |
Rotary or oscillatory slide-valve gear or valve arrangements

|  | F01L 33/02 |
· | rotary

|  | F01L 33/04 |
· | oscillatory

|  | F01L 35/00 |
Lift-valve gear or valve arrangements

|  | F01L 35/02 |
· | Valves

|  | F01L 35/04 |
· | Arrangements of valves in the machine or engine, e.g. relative to working cylinder