Abstract: A use condition of gas equipment is monitored. An abnormality determination unit 26 determines whether or not a use flow volume obtained by detecting a flow velocity obtained by measuring a signal transfer time in a medium using a flow velocity detection unit 17 and converting the detected flow velocity into a flow volume using a flow volume calculation unit 25. When the shutoff unit 27 shuts off a fluid path 1 when it is determined that there is abnormality, a return signal is output from a return unit 28 to a shutoff unit 27 in order to use the gas again by opening the fluid path. Simultaneously, when a return time-counting unit 29 starts the time-counting operation, and then, a predetermined time period has been elapsed, the flow volume calculation unit 25 determines whether or not a predetermined flow volume of greater flows in order to identify whether or not all of the gas plugs of the gas equipment connected to the downstream of the gas shutoff apparatus 27 are closed.

Abstract: A use condition of gas equipment is monitored. An abnormality determination unit 26 determines whether or not a use flow volume obtained by detecting a flow velocity obtained by measuring a signal transfer time in a medium using a flow velocity detection unit 17 and converting the detected flow velocity into a flow volume using a flow volume calculation unit 25. When the shutoff unit 27 shuts off a fluid path 1 when it is determined that there is abnormality, a return signal is output from a return unit 28 to a shutoff unit 27 in order to use the gas again by opening the fluid path. Simultaneously, when a return time-counting unit 29 starts the time-counting operation, and then, a predetermined time period has been elapsed, the flow volume calculation unit 25 determines whether or not a predetermined flow volume of greater flows in order to identify whether or not all of the gas plugs of the gas equipment connected to the downstream of the gas shutoff apparatus 27 are closed.

Abstract: Disclosed herein is a plastic wheel cover for a road wheel. The wheel cover comprises a cover proper; a series of lugs integrally formed on an inboard face of the cover proper, each lug having a latching pawl which is to be latchingly engageable with an annular ridge formed on a wheel disc of a road wheel; a resilient wire ring held by the lugs and biasing the same radially outwardly; and a series of stoppers integrally formed on the inboard face of the cover proper, the stoppers being arranged to alternate with the lugs. Each of the stoppers comprises at least one radially extending wall which has an upper surface sloped. The height of the wall is gradually reduced as the distance from an inboard end of the wall increases.

Abstract: A MacPherson strut front suspension is provided with an upper spring seat assembly which retains the upper end of a front coil spring and is rotatable together with the coil spring and a strut outer tube relative to a vehicle body. The upper spring seat assembly comprises concentric inner and outer tubular members, a spring seat rubber interconnecting the inner and outer tubular members, and a shallow dish-shaped abutment member which is attached to the inner tubular member to be rotatable together therewith and abuttingly engageable to limit upward movement of the outer tubular member relative to the inner tubular member.