Abstract: The present invention relates to controlling a removable electric propulsion system for a rolling object. In this method, a signal representative of the torque at a wheel driven by an electric machine of the electric propulsion system is measured (MES). This measurement is compared (COMP), over different time increments, with two thresholds, and the electric machine is controlled according to this comparison. The invention also relates to a propulsion system suited for this method and to a coupled assembly comprising the propulsion system and a rolling object.

Abstract: A panoramic camera having an ovoid-shaped housing with top and bottom ends. The camera has a lens near the top end of the housing, a display screen at the bottom end of the housing and an image sensor unit within the housing for capturing images. The camera also has a switch on the housing, where this switch is activatable by an operator of the camera for causing the camera to take a photograph or video. The panoramic camera is configured to be held in one hand by the camera operator when taking a photograph, with the switch being activatable by the same hand.

Abstract: A packaging box is provided wherein the product in the box can be well presented and easily removable from the box when the box is opened. A four bar mechanism is made of a series of paperboards hinged to each other. When the box is opened, the egg-shaped product is pushed up and moved to a more prominent or exposed presentation position.