摘要:
An air maintenance tire assembly includes an air pumping passageway located within a tire sidewall to generate compressed air. An outlet screw assembly includes an elongate screw body residing within a profiled sidewall bore. The screw body extends through an axial span of the first sidewall to the tire cavity to conduct air from the sidewall air passageway to the tire cavity. The screw body has enlarged sectional end components to deter radial dislodging of the screw body from the sidewall bore during operation.
摘要:
Apparatus and method of assembling an elongate air pumping tube into an elongate tire sidewall groove includes engaging the tire sidewall outward surface with an impact wheel at an impact location proximally adjacent and above the elongate groove as the tire is rotated. The groove is thereby spread segment-by-segment for segment-by-segment synchronous insertion of the tube into the groove. The groove is closed segment-by-segment as each spread segment is returned to its original narrower dimension utilizing elastomeric material composition properties of the tire sidewall.
摘要:
An air maintenance tire and air pump assembly is provided including a tire and an elongate tubular air passageway enclosed within a flexing region of a tire sidewall. A plurality of check valve devices are spaced apart and positioned along the air passageway into multiple air passageway segments. A check valve membrane opens to allow pressurized air to directionally pass through the check valve device from an upstream passageway segment to a downstream passageway segment and closes to prevent air from passing in an opposite direction through the check valve from the downstream segment to the upstream segment.
摘要:
A self-inflating tire assembly includes an air tube connected to a tire and defining an air passageway, the air tube being composed of a flexible material operative to allow an air tube segment opposite a tire footprint to flatten, closing the passageway, and resiliently unflatten into an original configuration. The air tube is sequentially flattened by the tire footprint in a direction opposite to a tire direction of rotation to pump air along the passageway to an inlet device for exhaust from the passageway or to an outlet device for direction into the tire cavity.
摘要:
A chamber is provided that works as a peristaltic pump for the pressure correction in the tire, which is a part of the tire or of an ancillary structure placed between the rim and the tire bead and is connected with the tire internal space at one end and with the external environment at the other end. The chamber is in the shape of a curved hollow channel, where at least one enclosing wall is at least partially formed by at least a pair of surfaces coplanar with the longitudinal direction of the chamber. When the tire is mounted on the rim, the pair of surfaces are pressed together thus hermetically closing the chamber. When the chamber is closed during rotation of the wheel, the surfaces can slightly slide on one another taking internal wall tensions onto themselves thus decreasing the possibility of wall damage through ripping.
摘要:
A tire for a self-inflating tire system includes a tire carcass having an annular air tube-receiving groove formed within a tire carcass wall and a pump assembly within the groove. The pump assembly includes an air tube having an axial air passageway; an inlet device positioned along the air tube, the inlet having a tubular inlet body having an internal air passageway aligned with the air tube and having at least one inlet opening extending through the inlet body for admitting air into the tubular inlet body. The inlet device further includes an air filtering sleeve at least partially surrounding the inlet opening of the inlet device, the sleeve having a tubular sleeve body at least partially surrounding and in co-axial relationship the tubular inlet body. The pump assembly further includes an outlet device positioned in-line along the air tube, the outlet device having a tubular outlet body and an axial passageway in-line with the air tube and having at least one outlet passage tube from the outlet device through the carcass wall to the tire cavity.
摘要:
This invention is directed to a method for inhibiting particulate material in a pneumatic tire from adversely affecting operation of a tire valve assembly The method involves inserting a filter element into a valve stem passage of the valve assembly while the valve assembly is connected to the wheel assembly, and then installing a sealing valve in the valve stem passage. The invention also relates to a tool for inserting the filter element into the valve assembly to inhibit particulate material from passing into the valve assembly while allowing fluid to pass therethrough. The tool comprises a body selectively attachable to the valve assembly. The body has a plurality of passages therein, including a plunger passage, a filter passage and a fluid passage, and a selector valve having two bores therein for selective registry with the plurality of passages. The selector valve is movable between a first position in which the fluid passage is in fluid communication with the valve stem passage and a filter element is loaded into one of the bores in the selector valve through the filter passage, and a second position in which the fluid passage is blocked against fluid communication with the valve stem passage and a plunger is adapted to move through the plunger passage and the bore loaded with the filter element to push the filter element into the valve stem passage.
摘要:
A central tire deflation system for emergency vehicles, such as fire trucks, rescue vehicles located at airports, enabling the operator to deflate all of the tires of the emergency vehicle to a predetermined minimum pressure while traveling to a crash site so that the "footprint" of the tires is increased at or about the time the vehicle reaches soft terrain. The minimum tire pressure is obtained by a minimum pressure valve which senses tire pressure as the tires are being deflated and stops deflation of the tires when the predetermined minimum pressure is sensed.
摘要:
A valve structure for heavy duty applications in connection with off-the-road or agricultural vehicle tires. Such applications involve a substantial increase in the weight of tires so that the vehicles will acquire stability in maneuvering; e.g. in the case of muddy, rocky, hilly conditions or the like.