Abstract: Starter motor for internal combustion engines which operates mechanically using stored spring energy as the power source whereby the spring comprises a spiral power spring.

Abstract: A self-winding spring starter for rotating data storage devices. The spring is fixed on one end to a chassis or a cowling. The spring selectively engages the rotating assembly at its other end via a clutch when the rotating assembly is being stopped. The assembly stops, reverses, and fully stops again before being locked into place by a brake. The spring thus winds, unwinds, and re-winds, cocking itself in the appropriate direction for re-start.

Abstract: A model internal-combustion engine having a rotatable shaft driven by an engine, a propeller secured to said shaft, and a combined self-starting mechanism and propeller drive in the form of a plastic cylindrical connector mounted coaxially on the shaft with one end thereof in driving relation against the propeller, the connector including a metal hub imbedded therein, the hub being fixedly mounted on said shaft for driven rotation therewith and having a knurled end thereof bearing against said propeller to drive the same, the connector having ramp-defining walls adjacent a spring-engaging element at one of its ends, and a helically wound spring surrounding the shaft, anchored at one end to a stationary part of the engine and having a free end bearing against the ramp-defining walls of the connector with a hook formed thereon to automatically engage the spring-engaging element of the connector and thereby energize the spring when the propeller and connector are rotated in a contra-normal direction and to other

Abstract: A model internal-combustion engine having a rotatable shaft driven by an engine, a propeller secured to said shaft, and a self-starting mechanism in the form of a cylindrical hub mounted coaxially on the shaft against the propeller and having at one end an axially extending drive element at its periphery by means of which it drives the propeller and ramp-defining walls adjacent a spring-engaging element at its other end, and a helically wound spring surrounding the shaft, anchored at one end to a stationary part of the engine, and having a free end bearing against the hub with a hook formed thereon to automatically engage the spring-engaging element of the cylindrical hub and energize the spring when the propeller and hub are rotated in a contra-normal direction and to otherwise ride on the ramps of the hub in non-engaging relation to its spring-engaging element.

Abstract: An engine starting device for starting an engine by connecting an output member on the side of a spiral spring and an input member on the side of the engine with each other when the force accumulation by the spring is released. A driving member is driven by the output of the engine. An automatic force accumulating operation mechanism for the spiral spring is driven by the driving member. A one-way clutch connects the automatic force accumulating operation mechanism in a winding pressure accumulating mechanism for the spiral spring with each other.

Abstract: An engine starter with a rotatable drum, a spring, and a planetary gear. An axially extending clutch bushing is permanently connected to one end of the motor shaft. The clutch bushing is via a clutch connectable to the sun gear, the clutch not engaging until the bushing exceeds a predetermined number of revolutions. Thus the spring of the engine starter is not retensioned for a new start until the engine has come well into operation. When the torque of the engine starter has reached a predetermined level the clutch disengages so that the spring is not broken.

Abstract: An improved engine starting device for a motorcycle of the kick pedal type is provided which is easy to operate, does not require any large force of operation and is thus particularly suitable for an unskilled and powerless person such as a woman or girl to operate. To this end, the device includes a spiral spring which is operatively associated with an engine crankshaft and with a pedal arm so that it can rotate the crankshaft for engine cranking by releasing its spring force or energy previously accumulated by several repetitive swing motions of the pedal arm due to the rider's foot operation. The device also provides improved safety in engine starting operation by preventing the motorcycle from starting to run unintendedly even where the engine is started with the engine throttle valve being opened excessively.