Abstract:
A punched metal plate 51 is constructed so as to be in a ring shape covering a space between the outside wall of the combustor basket 2a and the inside wall of the external cylinder 2c and at the same time is constructed to be a perforated plate having a plurality of holes. In addition, ribs 52 are provided in a radial pattern against the axis of a combustor in a manner that both ends of a rib 52 are in contact with the outside wall of the combustor basket 2a and the inside wall of the external cylinder 2c. Additionally, ribs 52 are provided in a plural number, and the plurality of ribs 52 are arranged so as to be equally spaced in the circumferential direction of a combustor and connected to the external cylinder 2c, thereby supporting the combustor basket 2a.
Abstract:
There is disclosed a method of vehicle construction for improving the rate of production of two assemblies of a motorcycle. The two assemblies can be made simultaneously on separate assembly lines and connected together by placing the power unit in fitting engagement with the vehicle frame and, more particularly, with a shell structure forming part of the vehicle frame. In the second assembly including the power unit, the rear fork is pivotally connected with the power unit on an axis substantially aligned with that of the output shaft of the latter.
Abstract:
The mud guard system for a chain of a motorcycle in which a drive chain is made to run on both a front sprocket connected to an engine and a sprocket connected to a rear wheel at the trailing end of a rear fork, comprises a mud guard member having a cylindrical shape for allowing the chain to run therethrough and disposed at one side of the rear wheel and a link or another connecting member for coupling the mud guard member floatingly to the rear fork so that the mud guard member can move in the longitudinal direction of the chain.
Abstract:
A vehicle tire having first areas of a higher degree of rigidity and second areas of a lower degree of rigidity, the first and second areas having different degrees of radially inward recession upon contact of the tire with the ground and being alternately arranged in the circumferential direction of the tire. Each of the second areas comprises a central projection and a plurality of projections surrounding the central projection in spaced relation and spaced from each other. Some of the projections which are located at the tread edges have side surfaces extending substantially parallel to a radial plane through the tire. The outermost projections disposed adjacent to the projections at the tread edges have side surfaces facing the ground and extending substantially perpendicularly relative to the side surfaces of the projections at the tread edges. With this arrangement, the tire can be driven with an increased degree of driving force on rough ground or terrain, such as sand and/or gravel.
Abstract:
A punched metal plate 51 is constructed so as to be in a ring shape covering a space between the outside wall of the combustor basket 2a and the inside wall of the external cylinder 2c and at the same time is constructed to be a perforated plate having a plurality of holes. In addition, ribs 52 are provided in a radial pattern against the axis of a combustor in a manner that both ends of a rib 52 are in contact with the outside wall of the combustor basket 2a and the inside wall of the external cylinder 2c. Additionally, ribs 52 are provided in a plural number, and the plurality of ribs 52 are arranged so as to be equally spaced in the circumferential direction of a combustor and connected to the external cylinder 2c, thereby supporting the combustor basket 2a.
Abstract:
To provide a rotational speed adjusting device for a pneumatic rotational tool in which even if high air pressure is supplied, rotational frequency thereof does not exceed the maximum allowable rotational frequency so as to prevent occurrence of breakage of a processing tool. A speed adjusting shaft 30 is secured to one end of a rotor 26, and a speed adjusting member 32 capable of being displaced with respect to the speed adjusting shaft 30 is mounted externally of the speed adjusting shaft 30. The speed adjusting shaft 30 is provided with a ball 44 movable in a radial direction, and the speed adjusting member 32 is axially displaced with respect to the speed adjusting shaft 30 by a centrifugal force applied to the ball 44. In the displaced position of the speed adjusting member 32 in the case where the rotational frequency of the rotor 26 reaches the allowable rotational frequency, a section of an air introducing passage 12 formed by the speed adjusting member 32 and a venturi portion 48 of a main body 10 is restricted so as to reduce a quantity of supplied air passing therethrough. By the restricted quantity of air, the rotational frequency of the rotor 26 is so restricted as not to exceed the allowable rotational frequency of a processing tool 16. A space 62 is formed between an end closing portion 52 of the speed adjusting member 32 and an end surface of the speed adjusting shaft 30. A small through hole 58 formed in a projection portion 54 of the end closing portion 52 of the speed adjusting shaft 30 has one part communicated with the space 62 and the other communicated with the air introducing passage 12. The axial expansible vibration of the speed adjusting member 32 is prevented by the resistance of air which moves in and out of the space 62 passing through the small through hole 58.
Abstract:
There is disclosed a method of vehicle construction for improving the rate of production of two assemblies of a motorcycle. The two assemblies can be made simultaneously on separate assembly lines and connected together by placing the power unit in fitting engagement with the vehicle frame and, more particularly, with a shell structure forming part of the vehicle frame. In the second assembly including the power unit, the rear fork is pivotally connected with the power unit on an axis substantially aligned with that of the output shaft of the latter.
Abstract:
A pair of split rim members are secured to the outer periphery of a wheel disc, and are provided with at least one projection piece which forms a space between it and the outer periphery of the wheel disc. An elastic sealing ring is inserted in such space to maintain airtightness, with the sealing ring having a normal width which is greater than the width of such space.
Abstract:
The present invention discloses a cowling structure of thin sheet material which forms a part of the vehicle frame in which the opposite side sections of the cowling firmly interconnected through the medium of the power propelling unit. Formed in one, or preferably both, of the opposite side sections of the cowling structure is an air outlet opening in which a radiator unit is fitted and a bifurcated air passage duct is defined in the cowling structure by an air-flow dividing guide plate so that an ample air supply is obtained through the front opening of the cowling to the pair of right and left radiator units during vehicle travel. In this manner, a cooling system of highly increased capacity is obtainable without any increase in air resistance of the vehicle. The guide plate also serves to strengthen the cowling structure without any substantial increase in weight.