| Patents for F01L 13 - Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations (9,664) |
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| 04/29/1980 | US4200081 Valve selector |
| 03/25/1980 | US4194485 Throttling passageway to decrease coast-down time of lawn mower engines |
| 03/25/1980 | CA1074197A1 Valve timing mechanisms |
| 03/11/1980 | CA1073293A1 Engine de-compression mechanism |
| 02/19/1980 | US4188933 Apparatus for controlling operation of inlet and exhaust valves and supply of fuel to selected cylinders of all of multi-cylinder I. C. engine |
| 02/19/1980 | US4188925 Engine cylinder valve control mechanism and cylinder head and engine incorporating same |
| 02/12/1980 | US4187810 Poppet valve stroke adjusting device for, and combination with, an internal combustion valve in head engine |
| 02/05/1980 | CA1071046A1 Variable valve timing system for internal combustion engine |
| 01/29/1980 | US4185606 Decompression operatively connected type kick-starting device |
| 01/24/1980 | WO1980000094A1 Improved engine valve control mechanism |
| 01/22/1980 | US4184468 Decompression device for internal combustion engines |
| 01/15/1980 | USRE30188 Valve train for internal combustion engine |
| 01/15/1980 | US4183252 Ancillary valve rocker means |
| 01/08/1980 | US4182290 Variable ratio rocker arm |
| 01/08/1980 | US4182289 Variable valve timing system for internal combustion engine |
| 11/27/1979 | US4175534 Valve deactivator for internal combustion engines |
| 11/20/1979 | US4174687 Braking device for four-stroke cycle reciprocating piston internal combustion engine |
| 11/20/1979 | US4174683 High efficiency variable expansion ratio engine |
| 11/06/1979 | US4173209 Engine control system and valve deactivator thereof |
| 10/02/1979 | US4169449 Cylinder de-activator system |
| 09/18/1979 | US4167931 Apparatus to control fuel supply to a multicylinder internal combustion engine by disabling one or more engine cylinders in certain engine operating conditions |
| 08/28/1979 | US4165728 Decompressing device to be used in engines for prime mover-equipped bicycles and the like |
| 08/21/1979 | US4164917 Controllable valve tappet for use with dual ramp cam |
| 07/26/1979 | WO1979000476A1 Four cycle diesel engine |
| 07/17/1979 | US4161166 Device for selectively controlling the number of operative cylinders in multi-cylinder internal combustion engines |
| 06/19/1979 | US4158348 System for retarding engine speed |
| 06/13/1979 | EP0002379A1 A reversing mechanism for a reciprocating combustion engine |
| 06/12/1979 | CA1056241A1 Adjustable cam system for internal combustion engine |
| 05/08/1979 | US4153016 Valve control system |
| 05/01/1979 | US4151824 Valve train system of internal combustion engines |
| 05/01/1979 | US4151817 Engine valve control mechanism |
| 04/24/1979 | US4150640 Fluidic exhaust valve opening system for an engine compression brake |
| 04/03/1979 | CA1051672A1 External combustion engine |
| 03/13/1979 | US4143629 Speed controlled hydraulic lifter for internal combustion engines |
| 02/27/1979 | US4141333 Valve train systems of internal combustion engines |
| 02/13/1979 | US4138973 Piston-type internal combustion engine |
| 01/16/1979 | US4134371 Valve control system |
| 01/09/1979 | US4133332 Valve control mechanism |
| 12/26/1978 | US4131096 Valve timing mechanisms |
| 12/05/1978 | US4128085 Engine mechanical loss reducing system |
| 09/19/1978 | US4114643 Valve operating mechanism of internal combustion engine |
| 09/19/1978 | US4114588 Valve deactuator for internal combustion engines |
| 09/12/1978 | US4112884 Valve lifter for internal combustion engine |
| 09/05/1978 | US4111165 Valve operating mechanism of internal combustion engine |
| 08/15/1978 | US4106446 Internal combustion engine with auxiliary combustion chamber |
| 06/27/1978 | US4096845 System for reducing the number of cylinders used in a multi-cylinder engine |
| 04/18/1978 | US4084568 Decompression-type internal-combustion engine and method of improving the characteristics of such engine |
| 03/07/1978 | US4077369 Internal combustion engine valve stroke adjusting device and combination thereof with engine |
| 12/06/1977 | US4061215 Engine exhaust brake controlled by transmission and accelerator |
| 12/06/1977 | US4061123 Engine de-compression mechanism |
| 12/06/1977 | US4061115 Valve train for internal combustion engine |
| 10/18/1977 | US4054109 Engine with variable valve overlap |
| 09/27/1977 | US4050435 Valve control for cylinder cutout system |
| 08/02/1977 | US4038825 Pneumatic method and device for diesel engine braking and restarting in the reverse direction |
| 07/05/1977 | US4033304 Piston-type internal combustion engine |
| 05/31/1977 | US4026258 Or oil vapors which are delivered to the combustion chamber of an internal combustion |
| 04/19/1977 | US4018203 Decompressing device |
| 03/01/1977 | US4009695 Programmed valve system for internal combustion engine |
| 10/19/1976 | US3986484 Camshaft for controlling variably opening valves |
| 09/21/1976 | US3981289 Automatic compression relief mechanism for internal combustion engines |
| 07/06/1976 | US3967602 Hydraulic valve lifter for reciprocating internal combustion engines |
| 06/15/1976 | US3963379 Convertible engine-air compressor apparatus for driving a vehicle |
| 05/25/1976 | US3958900 Convertible engine-air compressor apparatus mounted on a vehicle for driving said vehicle |
| 03/23/1976 | US3945355 Camshaft device for an internal combustion engine having a variable distribution |