Abstract: A device management apparatus manages a device. The device management apparatus includes a contract information acquiring unit that acquires contract information on quality assurance of the device; a state information acquiring unit that acquires state information indicating a state of the device; a determining unit that determines whether the state of the device satisfies a content of a contract based on the contract information and the state information; and a notifying unit that notifies a determination result.

Abstract: A data acquisition apparatus is connectable via a network to a data management apparatus, and acquires data requested from the data management apparatus. The data acquisition apparatus has a storage to store the acquired data, and a control unit to send the acquired data that is stored in the storage and is requested by an external data acquisition request by adding transfer information to the acquired data that is sent. The control unit sends the acquired data in divisions if an amount of the acquired data stored in the storage exceeds a predetermined amount, by adding, as the transfer information, transfer start information to the acquired data sent in the divisions first, and adding transfer complete information to the acquired data that is sent last in the divisions or, sends the transfer complete information when there is no more unsent acquired data stored within the storage.

Abstract: In an inscribed meshing planetary gear construction provided with a carrier pin (a carrier member) 116, rigidity and stability are improved and its entire length is shortened, resulting in that in particular, the connection between an input shaft 101 and an eccentric body 103 can be improved so as to reduce the number of component parts and the number of assembling steps. In order to realize this object, a flange part 114 of an output shaft 102, a carrier pin 116 and a support ring 117 are supported at both ends by a pair of bearings 115a and 115b, and then a reduction gear mechanism is disposed between bearings 115a and 115b. The input shaft 101 is formed with a D-cut part of cross section by cutting a part of its outer circumference in parallel with its axial direction. This cut part is utilized so as to set a circumferential position (a stop of rotation) between the input shaft 101 and an eccentric body 103.