Abstract:
A method of selective growth without catalyst on a semi-conducting structure. According to the method, which is applicable in electronics in particular: a semi-conducting structure is formed from first gaseous or molecular flows; at a same time or subsequently, at least one second gaseous or molecular flow is added thereto, to selectively in situ grow a dielectric layer on the structure; and then another semi-conducting structure is grown thereon from third gaseous or molecular flows.
Abstract:
A local area wireless communications network includes an MCU which generally operates to manage the placement of audio and other information into frames that are transmitted to a base station which serves to convert the frames from one signal format to another signal format and broadcast the frames over a wireless medium to associated mobile communications devices. The wireless communications system operates in a way that permits the broadcasting of new software files from the base stations to associated mobile communications devices in a parallel manner without having a detrimental affect on the operation of the communications system. The MCU operates to place download alert information and download payload information into the frames in such a format and into certain positions in the frame that this information can be recognized and stored by the mobile phones which use it to update their current software.
Abstract:
An elevator call button senses the position of a push button by means of a photoreflective sensor, thereby eliminating the need for a mechanical switch.
Abstract:
A method of selective growth without catalyst on a semi-conducting structure. According to the method, which is applicable in electronics in particular: a semi-conducting structure is formed from first gaseous or molecular flows; at a same time or subsequently, at least one second gaseous or molecular flow is added thereto, to selectively in situ grow a dielectric layer on the structure; and then another semi-conducting structure is grown thereon from third gaseous or molecular flows.
Abstract:
Ball screw system comprising a screw having an external threading, a nut having an internal threading and a series of balls being engaged in the threadings to link the screw and the nut, the nut comprising ball recirculation means comprising at least one ball deflection element inserted into a through hole of the wall of the nut, from outside to inside as far as abutment means, in which the nut is equipped with a retaining means which bears on a peripheral wall of this nut, over at least a part of its length, and which bears on an external face of the deflection element, the permanent retaining means being self-held and ensuring that the deflection element is held permanently in the through hole.
Abstract:
An elevator call button transmits infrared radiation into the space adjacent an elevator, and a call request is recognized by infrared radiation reflected from a potential passenger to an infrared receiver. Thus not only is contact with the button not required, the use of a finger or like-sized object is not required in order to place a call.
Abstract:
An apparatus for determining if an elevator car is level with respect to a landing in a hoistway comprises a transceiver for transmitting a signal, a first reflector having a varying reflectance between a maximum reflectance end and a minimum reflectance end, a second reflector having a varying reflectance between a maximum reflectance end and a minimum reflectance end, and a processor. The first reflector transmits a first reflected signal in response to the signal transmitted by the transceiver and the second reflector transmits a second reflected signal in response to the signal transmitted by the transceiver. The first reflector and the second reflector are adjacently aligned such that the maximum reflectance end of the first reflector is adjacent to the minimum reflectance end of the second reflector, and the minimum reflectance end of the first reflector is adjacent to the maximum reflectance end of the second reflector. The processor determines if the elevator car is level with respect to the landing in response to the first and second reflected signals.
Abstract:
Ball screw assembly comprising a screw (2) provided with an outer thread (3); a nut (4) provided with an inner thread (5); a series (6) of balls (7) able to circulate along a circulating path (10) between the screw and the nut, along which the balls are engaged in the threads thereof; and recirculating means (8) defining a recirculating channel (9) to carry balls from one end to the other end of said circulating path (10); The recirculating channel (9) comprising a return channel (14) provided on the nut and, between the ends of this return channel and the corresponding ends of said circulating path, deflecting channels (27, 28) which are defined respectively between surfaces (25) of deflecting elements (20, 21) engaged in respective holes (11, 12) of the nut (4) and local zones (26) of surfaces (16) of these respective holes.
Abstract:
A plurality of cells is provided within a wireless network coverage area. An information element is broadcast to at least one of the cells. The information element identifies a position of the cell relative to the wireless network coverage area.
Abstract:
A local area wireless communications network includes an MCU which generally operates to manage the placement of audio and other information into frames that are transmitted to a base station which serves to convert the frames from one signal format to another signal format and broadcast the frames over a wireless medium to associated mobile communications devices. The wireless communications system operates in a way that permits the broadcasting of new software files from the base stations to associated mobile communications devices in a parallel manner without having a detrimental affect on the operation of the communications system. The MCU operates to place download alert information and download payload information into the frames in such a format and into certain positions in the frame that this information can be recognized and stored by the mobile phones which use it to update their current software.