Tire assemblies are disclosed. In one embodiment a tire insert assembly includes an elastomeric tire insert constructed to be received within a tire, the tire having sidewalls and a tread portion. An upper crown surface of the tire insert and a lower surface of the tire define an outer chamber and the tire insert defines an inner chamber. The tire insert may be configured to support a substantial portion of the sidewall of the tire when the inner chamber is inflated.

A lifesaving device and a lifesaving control method are provided. Wherein, the lifesaving device includes: at least one first detection module (200) configured for detecting human body biological characteristic information, a lifesaving device body (100) capable of being worn on a body of a user, and at least one first gasbag module (300) arranged on the lifesaving device body (100); after the first gasbag module (300) is activated, a lifesaving gasbag (1) can be popped up; the first detection module (200) is in signal connection with the first gasbag module (300) and is configured for activating the first gasbag module (300) when the biological characteristic information detected meets a first preset condition.

The present invention overcomes the shortcomings of the current trial and error method in deflating tires. The controlled tire deflation valve system allows for tires to automatically and accurately deflate to the desired pressure. The present invention comprises a shaft, a spring and a piston wherein the shaft runs through the spring until the spring rests on the shaft spring seat. The shaft spring seat is effective in restricting the movement of the spring.

Adapter, tyre parameter monitoring system and method for mounting a tyre parameter monitoring system onto a wheel rim In an embodiment, a tyre parameter monitoring system (2) is provided that comprises an electronic module (4) with a fitting (6) for a snap-in valve, a ball stud (8) coupled to the fitting (6) and a valve stem (10) for a clamp-in valve. The valve stem (10) has a ball socket (12) that is coupled to the ball stud (8) for form a ball joint such that the valve stem (10) is positionable at different angles to the electronic module (4).

Valves for inflating tires of tired wheels, in particular tires for vehicles, wherein the term “vehicles” refers to motor vehicles, vans, trucks, motorcycles or in general elements of locomotion on tires. More in detail, a metal valve (1) of the clamp-in type for inflating tires (2) associable with a TPMS transducer (3) by a locking screw (4) and arranged to be mounted, by a fixing system including a nut (5) adapted to screw onto a thread (18) provided on the stem (8) of the valve (1), on a rim (6) of a wheel, wherein the fixing system includes an element (7) that irreversibly yields when a preset tightening torque is reached for the locking nut (5), and wherein the element (7) that irreversibly yields is associated with the stem (8) of the valve (1).

A thin air bag/bladder, which when packaged and attached to an air valve system is inserted into an inflatable boat, or inflatable structure to repair a puncture or leak. This valve and adapter system is used to fasten and lock the valve structure in place during use. After attachment to the air valve system, the packaged bag is inserted into the inflatable structure with a collapsible tent pole/stick through the pre-existing valve opening with newly installed adapter. A valve system and bag/bladder will be needed for each separate air chamber of the boat design, whatever the length, diameter, or number of individual chambers. This will allow a replacement bag to be user retrofitted at any later time, whenever needed to repair a puncture or leakage, in any inflatable boat, life-raft or inflatable device.

A wheel assembly rotational position identifying apparatus includes an acceleration detector, a control section, and a battery. The control section identifies the rotational position of the wheel assembly based on an acceleration detected by the acceleration detector. The control section operates in a control mode that is a selected one of a normal mode and a power saving mode, in which a power consumption associated with identification of the rotational position of the wheel assembly is smaller than that in the normal mode. The control section switches the control mode to the normal mode when an initiation condition is met in accordance with an input from outside. The control section also switches the control mode to the power saving mode when a termination condition is met in the normal mode.

An air maintenance tire assembly includes a tire having a tire cavity bounded by first and second sidewalls extending to a tire tread region, air pumping means for generating pressurized air for maintaining air pressure within the tire cavity at a preset pressure level, the air pumping means including a soft tubing and compression fittings for mitigating dynamic loading on the compression fittings, and a valve housing disposed adjacent an outward end of the valve stem and operative to selectively open and close pressurized air flow from the valve stem internal passageway into the tire cavity. The valve housing is connected to the air pumping means by the soft tubing and compression fittings for mitigating dynamic loading on the compression fittings.

A pressure and temperature compensated valve assembly includes a flow valve allowing inflation flow from a control port to a tire port and controlling deflation flow from the tire port to the control port. A throttle valve restricts deflation flow between the tire port and the control port when deflating the tire at high flow rates or when tire pressure is high, thus enabling the flow valve to be closed. The throttle valve includes a throttle diaphragm that throttles in response to flow from the tire port and which does not restrict inflation flow from the control port. The valve assembly further includes a temperature responsive member engaging the flow valve, and which deforms in response to a change in temperature in the valve assembly, thus negating temperature effects on the flow valve, allowing the flow valve to close at a consistent force across a range of operating temperatures.

A vent valve for a buoyancy control device (“BCD”) suitable for divers, where the valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained. An automatic buoyancy control device suitable for free-swimming divers, providing the functions that may include a controlled ascent rate, controlled descent rates, the imposition of a maximum depth limit, the facility to hold a set depth and to follow a dive profile or decompression profile. The device, control process and subsystems provide a high safe failure fraction.