Abrégé

A carcass sleeve is situated in a radially external position with respect to a toroidal forming drum, arranged in a first radially contracted operative condition. The carcass sleeve is shaped according to a toroidal configuration while the forming drum is positioned inside the carcass sleeve. During shaping of the carcass sleeve, the forming drum is radially expanded up to a second radially expanded operative condition. Upon completed shaping, the carcass sleeve is coupled to the forming drum in the second operative condition. The forming drum, coupled to the shaped carcass sleeve, is arranged in proximity to at least one device for building at least one belt layer at a radially external position relative to the shaped carcass sleeve.

Classes IPC  ?

• B29D 30/36 - Expansion de pneumatiques à partir de la forme normale, p. ex. de pneumatiques fabriqués par le procédé du bandage à plat ou par recouvrement conjoint de deux tringles
• B29D 30/16 - Mise en place des couchesGuidage ou étirage des couches en cours d'application
• B29D 30/24 - Tambours
• B29D 30/26 - Accessoires ou détails, p. ex. membranes ou éléments de transfert
• B29D 30/08 - Fabrication des pneumatiques

Abrégé

Apparatus for applying noise-reducing elements to a tyre for vehicle wheels that has a radially inner surface with a service area and a circumferential dimension. The apparatus determines the position in circumferential direction of the service area, determines the position in circumferential direction of a target area on the radially inner surface of the tyre based on the position in circumferential direction of the service area, and applies a noise-reducing element the target area. The position in circumferential direction of the service area is determined by circumferentially inspecting the radially inner surface of the tyre starting from a reference position, detecting the angular position of the service area with respect to the reference position and determining the position in circumferential direction of the service area based on the angular position and on the circumferential dimension of the radially inner surface of the tyre.

Classes IPC  ?

• B32B 41/00 - Dispositions pour le contrôle ou la commande des procédés de stratificationDispositions de sécurité
• B29D 30/06 - Pneumatiques ou leurs parties constitutives
• B60C 19/00 - Autres structures ou éléments du pneumatique
• G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques
• G01M 17/02 - Pneumatiques

Abrégé

A sun tracker device (1), comprises a base frame (10) provided with a track (15) that is at least in part circular, a support structure (20) of at least one photoreceiver module (100), the support structure (20) being slidably associated with the track (15) and comprising a reference plane (R) for the coupling to said at least one photoreceiver module (100), a first motor group for controlling the movement of the support structure (20) on the- track (15) around a substantially vertical axis (Z-Z) and at least one movement member (85) of said at least one photoreceiver module (100) around a respective substantially horizontal axis (Y-Y). The reference plane (R) is tilted, with respect to a support plane of the device (1), by an angle of predetermined amplitude. An optimal compromise is achieved between maximisation of the energy yield and minimisation of the device size, at the same time ensuring an easy access to the components of the device for the maintenance operations.

Classes IPC  ?

• F24J 2/54 - spécialement adapté pour un mouvement de rotation
• H01L 31/042 - Modules PV ou matrices de cellules PV individuelles

Abrégé

In wireless communication networks, especially in WPAN/WSN networks, there is a need to limit power consumption of network nodes; in asynchronous duty-cycled networks special MAC protocols are used for this purpose. According to the present invention, a source node (N1) estimates not only the schedule time offset of the destination node (N2) but also the clock drift of the destination node (N2); in this way, the source node (N1) may choose very accurately the transmission start time of an information packet to this destination node (N2) so that typically only one very short preamble needs to be transmitted. The estimation of time offset and clock drift between two nodes (N1, N2) is achieved through one or more previous transmissions between these two nodes (N1, N2); in particular, information relating to these parameters are transmitted from the destination node (N2) to the source node (N1) in reply to a preamble transmitted by the source node (N1) to the destination node (N2).

Classes IPC  ?

• H04W 56/00 - Dispositions de synchronisation
• H04W 52/02 - Dispositions d'économie de puissance