Abstract: A movable crankpin, variable-compression ratio, piston engine with movable counterweights so as to eliminate engine imbalance during displacement and compression ratio change. Compression ratio may be changed manually or automatically without stopping and restarting the engine.

Abstract: A retainer for securing electrical components such as IC's to a PCB requiring low or zero insertion force formed having spring biasing locking means for applying retaining contact pressure between the leads or contacts of the IC and a connector. In the preferred embodiment the retainer is in the form of a channel having a plurality of depending legs, each of which is adapted to engage the contacts in an operative position. In other embodiments, the spring retainer may be an elastomeric pad. In still another embodiment the retainer includes a lip or flange engageable with one portion of the component and the spring by contacts associated with the connector which apply an opposite biasing force. In still other embodiments the spring retainer is integrally formed in the depending contact lead, the IC or component.

Abstract: A fuel delivery system for an internal combustion engine. A fuel supply chamber is located adjacent the combustion chamber and is in communication with the combustion chamber. A fuel supply line communicates with the fuel chamber. A valving piston is movable in said fuel chamber and a fuel port or pocket is formed between the valving piston and the fuel chamber. The valving piston is actuable to place the fuel port in communication with the combustion chamber to deliver discrete quantities of fuel to support combustion. The valving piston may be mechanically, hydraulically, pneumatically or electrically operated. Means are also disclosed which cooperate with the valving piston to expel fuel from the port in the fuel delivery position.