Abstract: A device for training purposes or recreational activities using structures having a range of properties. The training device may include a board made of wood (or other material such as metal, rubber, plastic, or a combination thereof) and one or more suspension assemblies coupled to the bottom surface of the board. The assembly is adapted to be coupled to a longitudinal or a lateral slot on the board. The slots allow a user to longitudinally and laterally move the assembly without uncoupling it from the board, thereby allowing the user to easily position and re-position the assembly on the board to change the performance of the training device. Each of the assemblies may include an inflatable base having a polygon or circular shape. The base is for providing a cushioning effect when the board impacts the ground after a user performs an aerial maneuver.

Abstract: A device for training purposes or recreational activities using structures having a range of properties. The training device may include a board made of wood (or other material such as metal, rubber, plastic, or a combination thereof) and one or more suspension assemblies coupled to the bottom surface of the board. The assembly is adapted to be coupled to a longitudinal or a lateral slot on the board. The slots allow a user to longitudinally and laterally move the assembly without uncoupling it from the board, thereby allowing the user to easily position and re-position the assembly on the board to change the performance of the training device. Each of the assemblies may include an inflatable base having a polygon or circular shape. The base is for providing a cushioning effect when the board impacts the ground after a user performs an aerial maneuver.

Abstract: A system and method are disclosed which may include a training board including a plank made of wood (or other material such as metal, rubber or plastic) and deformable or non-deformable structures coupled to a bottom thereof, thereby enabling the board to rotate about as many as three rotational axes upon having force applied thereto by a user. The training board may enable a user to use to the board for training purposes or recreational activities using structures having a range of properties.

Abstract: A system and method are disclosed which may include a training board including a plank made of wood (or other material such as metal, rubber or plastic) and deformable or non-deformable structures coupled to a bottom thereof, thereby enabling the board to rotate about as many as three rotational axes upon having force applied thereto by a user. The training board may enable a user to use to the board for training purposes or recreational activities using structures having a range of properties.

Abstract: A method of reinstating a start winding is disclosed wherein the start winding is disconnected when the main winding motor current reaches a predetermined value, but is only reinstated when the start winding voltage has a predetermined relationship to the main winding motor current. The method uses a solid state induction motor starter circuit which requires little or no adjustment during the life of the motor.

Abstract: A start circuit for an induction motor having a main winding and a start winding includes a sensor of main-winding current. A detector detects the level of main-winding current sensed by the sensor. The start circuit includes a reference generator driven by the level detector and providing a reference level proportional to an average value of main-winding current. The reference level can vary slowly in accordance with a long-term drift in magnitude of the main-winding current. A switch energizes and deenergizes the start winding in accordance with relative values of a signal of the detector and the reference level, thereby allowing for automatic restarting in the event of a sudden increase of current due to a motor stall.