Abstract: A brake auxiliary device is proposed, including a resilient mechanism having an upper support member mounted on a bottom surface of a vehicle, and a lower support member properly spaced apart from the upper support member at a position above a wheel shaft of the vehicle; a transmission mechanism positioned between the upper and lower support members of the resilient mechanism, and rotatably abutting against the lower support member; and a drive mechanism coupled to the transmission mechanism, for outputting power to operationally drive the transmission mechanism. The transmission mechanism is adapted to operate to induce displacement of the lower support member with respect to the upper support member, and to generate up and down movement for the vehicle, so as to raise vertical upright pressure applied from wheels of the vehicle to the ground, and thereby increase friction between the wheels and the ground in favor of braking implementation.

Abstract: A brake auxiliary device is proposed, including a resilient mechanism having an upper support member mounted on a bottom surface of a vehicle, and a lower support member properly spaced apart from the upper support member at a position above a wheel shaft of the vehicle; a transmission mechanism positioned between the upper and lower support members of the resilient mechanism, and rotatably abutting against the lower support member; and a drive mechanism coupled to the transmission mechanism, for outputting power to operationally drive the transmission mechanism. The transmission mechanism is adapted to operate to induce displacement of the lower support member with respect to the upper support member, and to generate up and down movement for the vehicle, so as to raise vertical upright pressure applied from wheels of the vehicle to the ground, and thereby increase friction between the wheels and the ground in favor of braking implementation.

Abstract: An air leakage warning device for a pneumatic tire is described which comprises a housing member including in longitudinal direction a cylindrical intermediate section, an enlarged cylindrical lower section connected to the cylindrical intermediate section through a shoulder portion, and a four-sided upper section having a circular at the outmost end; a cylinder or tubular member containing a perforated piston means and a coil spring responsive to a predetermined pressure within the tire, the upper end of the cylinder member being inter-connected with the lower section of the housing member while the lower end thereof is secured to a base member which is adapted to be secured to the air filling valve stem of the pneumatic tire; a rubber ball being freely movable in the space defined by the housing member and the upper end of the cylinder member; and a rubber sack forming a receiver for escaping tire air and adapted to be ruptured by its contained air pressure so as to give an audible signal, the rubber sack h