Rear Compression
- Fuel to crankcase (Class 123/73A)
- Ported piston (Class 123/73AA)
- Inlet valve in head (Class 123/73AB)
- Varies compression space (Class 123/73AC)
- Lubricant oil and fuel mixing devices (Class 123/73AD)
- Auxiliary piston moves synchronously with piston to enlarge volume of crankcase or incoming charge (Class 123/73AE)
- Crankcase compression with auxiliary pump means (Class 123/73AF)
- Fuel to bypass (Class 123/73B)
- Fuel to cylinder (Class 123/73C)
- Disc valves (Class 123/73D)
- Reentrant cylinder head (Class 123/73E)
- Stepped piston (Class 123/73F)
- Supercharging of crankcase (Class 123/73S)
- Valves for crankcase (Class 123/73V)
- Returns charge to crankcase or rejects to exhaust (Class 123/73SC)
- Distinct passages from crankcase to cylinder (Class 123/73PP)
- Slow-speed operation (Class 123/73SP)
- Fuel to rear of piston (Class 123/74A)
- Reduced portion of piston acts as guide (Class 123/74AP)
- Cross head between piston and crank (Class 123/74AC)
- Enclosed crankcase (Class 123/74AE)
- Lengthwise bypass (Class 123/74B)
- Lengthwise cylinder combustion space (Class 123/74C)
- Slide valve between chamber of pump and crankcase (Class 123/74D)
There are no patents to show for this class.