Abstract: A tire sealant composition and fibers for use in tire sealant compositions include ceramic fibers composed mainly of alumina and silica, polyethylene fibers and cellulosic fibers. The sealant is of the type to be injected into pneumatic tires to seal future punctures.

Abstract: A low tire pressure indicator is hermetically sealed to a tire valve stem absent the valve core. The indicator includes an elongate body having a seal to the wall of the valve stem at a first end and a valve core at a free second end. The air canal of the stem is in communication with an annular air passage defined by the elongate body. A resilient element disposed intermediate the two ends is moved away from the long axis of the body by the air pressure in the annular air passage. A spring bias urges the element toward the axis. An electric switch mechanism actuated by the air pressure action on the resilient element is closed when the tire pressure is below a preset value, and open when the pressure is above that value. A light emitter such as a light emitting diode and a battery form a circuit with the switch mechanism to emit light when the pressure is low. The emitter and battery may be removed and replaced without disturbing the hermetic seal.

Abstract: Apparatus removes and replaces the valve core from the internally threaded valve stem of apparatus such as vehicular tires and air conditioning systems. Valve cores of the Shrader type have a rectangular outward projection. The device of the invention has a pair of opposed jaws that are movable toward and away from each other for removably grasping the lateral sides of the projection. The jaws are moved toward one another for grasping by a threaded rod with a tapered end that cooperates with sloping elements opposite the jaws. The jaws move away from each other for releasing the valve core by elastic bias. An optional embodiment includes a valve to enable removal and replacement of the core without the loss of fluid from the valve stem. The invention may be used to replace a valve core, or to add fluid such as refrigerant or tire sealant without interference from a valve core.

Abstract: The invention provides apparatus and methods for injecting fluid such as sealing and balancing fluid into tires while they are inflated and mounted on wheels and especially for two tires mounted on a dual rim wheel. The invention overcomes problems of limited access to the valve stems and includes tools for bending the stem in place to facilitate application of the apparatus.

Abstract: Apparatus injects fluid such as sealing and balancing fluid into inflated tires, even two tires on a dual rim wheel, while on a vehicle. It seals to the valve stem so that the valve core can be unscrewed and retracted under pressure, providing an unobstructed fluid injection path before replacing the core without significant pressure loss. Tools for bending tire stems in situ facilitate apparatus installation.

Abstract: A shroud to contain contaminants removed from a conveyor chain during cleaning with pressurized air. The shroud is substantially enclosed except for chain ingress and egress openings and a contaminant discharge opening. The shroud includes a top hinged to a bottom. The top supports the air nozzles and the bottom defines the discharge opening.