초록 ▼

A rolling foot-powered apparatus mounted for movement on rotatable rollers and including at least one upper movable assembly, a lower stationary assembly, and at least one motion-conversion mechanism or an alternatively retractable motion-conversion mechanism. The movable assembly, which is provided

A rolling foot-powered apparatus mounted for movement on rotatable rollers and including at least one upper movable assembly, a lower stationary assembly, and at least one motion-conversion mechanism or an alternatively retractable motion-conversion mechanism. The movable assembly, which is provided with mounted means for movement therewith, and the lower stationary assembly, are cooperatively associated one with another and with the assistance of the motion conversion mechanism or alternatively retractable motion-conversion mechanism are operative such that an oscillating motion of the movable assembly or alternatively a linear motion of the movable assembly is converted either to a continuous circular motion of the rotatable shaft or alternatively to the rotatable rollers for the purpose of imparting a continuous linear motion of the rolling foot-powered apparatus. Motion is imparted to the movable assembly by virtue of the forces produced either by a human body through gravity or alternatively by the dynamic thrust that is applied to the movable assembly by a human foot which is either rigidly or flexibly restrained or by means of simple contact therewith. The linear motion or alternatively oscillating motion of the movable assembly is converted by the motion conversion mechanism or alternatively by the retractable motion-conversion mechanism into a continuous circular motion for the rotatable rollers of the rolling foot-powered apparatus. The outer cylindrical surface of the rotating rollers of the rolling foot-powered apparatus are in constant contact with the adjacent ground surface such as to thereby generate frictional forces, which urge the rolling foot-powered apparatus to move forward with a linear motion.

대표청구항 ▼

A rolling foot-powered apparatus mounted for movement on rotatable rollers and including at least one upper movable assembly, a lower stationary assembly, and at least one motion-conversion mechanism or an alternatively retractable motion-conversion mechanism. The movable assembly, which is provided

A rolling foot-powered apparatus mounted for movement on rotatable rollers and including at least one upper movable assembly, a lower stationary assembly, and at least one motion-conversion mechanism or an alternatively retractable motion-conversion mechanism. The movable assembly, which is provided with mounted means for movement therewith, and the lower stationary assembly, are cooperatively associated one with another and with the assistance of the motion conversion mechanism or alternatively retractable motion-conversion mechanism are operative such that an oscillating motion of the movable assembly or alternatively a linear motion of the movable assembly is converted either to a continuous circular motion of the rotatable shaft or alternatively to the rotatable rollers for the purpose of imparting a continuous linear motion of the rolling foot-powered apparatus. Motion is imparted to the movable assembly by virtue of the forces produced either by a human body through gravity or alternatively by the dynamic thrust that is applied to the movable assembly by a human foot which is either rigidly or flexibly restrained or by means of simple contact therewith. The linear motion or alternatively oscillating motion of the movable assembly is converted by the motion conversion mechanism or alternatively by the retractable motion-conversion mechanism into a continuous circular motion for the rotatable rollers of the rolling foot-powered apparatus. The outer cylindrical surface of the rotating rollers of the rolling foot-powered apparatus are in constant contact with the adjacent ground surface such as to thereby generate frictional forces, which urge the rolling foot-powered apparatus to move forward with a linear motion. e aperture of the base sheet. When clamped between flange surfaces, the edge coating engages, conforms to, and seals against the flange surfaces to provide a seal against both interfacial and intersticial migration of fluid past the gasket. At the same time, the inherently good compression failure resistance of the compressible gasket material of the base sheet is preserved. Thus, a gasket with enhanced sealability and compression failure resistance is provided. A unique method of making such an edge coated gasket is also disclosed.