Abstract: A tire abnormality detecting device has a first unit to be provided on a vehicle body side and a second unit to be provided on a tire side. The first unit includes an electrical signal generating source for generating a specific electrical signal, a first coil device for generating an induction voltage in receipt of the electrical signal, and a device for detecting a change in the induction voltage of the first coil device. The second unit includes a second coil device adapted to be magnetically connected to the first coil device, a third coil device having a magnetic core formed of a temperature sensing magnetic material to form a resonance circuit in cooperation with the second coil device, and a switch mechanism for changing a time constant of the resonance circuit in response to a change in air pressure in a tire. With this construction, the abnormal reduction in air pressure in the tire and/or the abnormal increase in temperature of the tire can be detected.

Abstract: This is a sealing means to form a tight seal between two members opposed to each other, one of which has a flat contact surface formed for contacting one end of a frustoconical metal gasket. The other member is provided with a groove opening toward the contact surface, hold the metal gasket on the other end portion within the groove and is also provided with a wall surface for contacting the surface of the first sealing end. The wall surface is arranged as required so as to be movable in the direction in which the sealing force acts.