Abstract: A back-mirror device for small-sized vehicles of the type that a back-mirror is mounted to an upper side portion of a fairing which covers a front portion of a vehicle body by the intermediary of an arm member projecting from the side portion. The arm member is provided with an opening which penetrates through the arm member in the direction of running of the vehicle, hence upon running of the vehicle, running wind blows through the opening from the forth to the rear, and thereby an air resistance is reduced. Among two arm portions separated to the above and the below by the opening, one arm portion is may be made to be able to avoid an external load by separation or bending in the event that an external load exceeding a predetermined amount is applied thereto, and the other arm portion could be provided with a flexible vibration-absorptive member.

Abstract: A front wheel supporting member comprises a steering handle, a member supporting a single front wheel, an arm which supports the front wheel supporting member on a motor vehicle body, and a link assembly by which the steering handle and the front wheel supporting member are angularly movable coupled to each other. The link assembly includes a first universal joint operatively coupled to the steering handle and a second universal joint operatively coupled to the front wheel supporting member. The second universal joint has a center on the axis of angular movement of the front wheel supporting member.

Abstract: A motorcycle [1; 101; 201] includes an engine unit [2] disposed centrally in the motorcycle [1; 101; 201], front swing arms [14, 18] having rear ends operatively connected to the engine unit [2] for vertical swinging movement, with a steering arm [26] which supports a front wheel [15] being attached to the front ends of the front swing arms [14, 18], and a rear swing arm [33] supporting a rear wheel [34] on a rear end thereof and having a front end operatively connected to the engine unit [2[ for vertical swinging movement. The motorcycle [1; 101; 201] further includes a front subframe [5; 205] detachably mounted on a front portion of the engine unit [2], the rear ends of the front swing arms [14, 18] being pivotally coupled to the front subframe for vertical swinging movement. The motorcycle [101] further includes a support frame [110] attached to the front subframe [5] and supporting a steering post [8], the support frame [110] having an air cleaner case [113].

Abstract: A Stirling engine which has an expansion cylinder and a compression cylinder with an expansion piston and a compression piston, respectively, that have a fixed phase difference between them, where the expansion cylinder and the compression cylinder are connected through a heater, a regenerator, and a cooler, a fixed amount of working fluid is sealed in the expansion cylinder and a compression cylinder, and the engine is driven by heating or cooling the working fluid with the heater or the cooler, and in the above Stirling engine, the heater for heating the working fluid includes a combustion chamber attached to the expansion cylinder, a burner for jetting a combustible substance into the combustion chamber, a plurality of heat exchanger pipes for forming a plurality of passages for the working fluid to connect through between the expansion cylinder and the regenerator by turning back on themselves, in order to heat the working fluid with the high temperature gas from the burner, and a cylinder head for instal

Abstract: Disclosed are a catalyst carrier for purification of waste gas which comprises a carrier comprising a calcined clay material composed of 1 to 5% by weight of lithium oxide (Li.sub.2 O), not less than 20% by weight of aluminum oxide (Al.sub.2 O.sub.3) and not less than 60% by weight of silicon dioxide (SiO.sub.2), the total thereof being substantially 100; an aluminum oxide supported on the surface of the said clay material; and a platinum group element having further supported on said aluminum oxide; and a process for preparing the same.