| 摘要 |
An improved vehicle tire deflator that is a foldable and can be deployed by pushing it or pulling it to an extended attitude across at least one full traffic lane, and includes a number of rocker arms that are pivotally coupled to base supports to form a frame that is collapsible and when extended, includes a stop arrangement for holding the rocker arms apart. Which rocker arms each include a plurality of actuators and spaced spike base bosses, with each spike boss center holed and countersunk to accommodate an end of a hollow spike and attached resilient grommet fitted therein. With a tire rolling onto which rocker arm actuator, the rocker arm is canted towards the rolling tire tread surface, pointing a hollow spike sharp end at that tire tread to pierce and lodge therein as the tire rolls over it, and with continued tire rolling the hollow spike is pulled from its spike base boss seat and travels fully into which tire, allowing air from within that tire to vent to atmosphere. Alternatively, for penetrating a steel belted tire, or the like, an insert formed of a hard steel, or the like, and having a pointed end is fitted longitudinally into and maintained in which hollow spike without blocking the air passage through which hollow spike, the insert pointed end extending beyond the hollow spike pointed end to first contact the tread of a tire rolling thereover. The resilient grommet absorbs forces as are exerted by the tire rolling over the hollow spike pointed end that would otherwise distort and deform the sides of the spike base boss seat, thereby maintaining the shape of which seat to allow for the replacement of hollow spikes, with or without inserts, fitted therein, providing for deflator reuse.
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