Abstract: There is described a transmission belt for use in a constantly variable power transmission of the type utilizing pulleys of variable effective diameter, the transmission belt comprising a plurality of identical links of substantially trapezoidal form, having pulley-engaging traction surfaces (1, 32) at their non-parallel edges and being formed on each face with a series of aligned tunnel-like loops (3, 4, 30), the two series of loops on each link being complementary so that when two links are superposed, the loops on adjacent faces define a cylindrical cavity in which a pin (11, 14, 21) is receivable to provide a tension-transmitting articulation between the links. The links are also formed with compression-transmitting surfaces (7, 41, 57) on each of their faces, these surfaces abutting when the links are in a linear array. Optionally, the longer of the parallel sides (43) of each link may be adapted to carry a plain tension belt (40) to augment the power transmission capacity of the belt.

Abstract: There is described a charging and distributing device for a piston engine, the device including a variable displacement rotary compressor delivering through one of its shafts to a coaxial rotating distribution tube (1,25), the tube being formed with ports (4,29) which sequentially coincide with inlets (7,27) to the respective cylinders of the engine. A control system (14) to regulate the displacement of the compressor is disclosed, and the use of eccentrically weighted rotary pistons (10,12) and/or distribution tube to balance the engine as a whole is envisaged.