A hose arrangement includes an outer tube of flexible material and an inner tube of an elastic material for carrying fluid. Due to an action of the elastic inner tube, the hose has a shorter length in a contracted state in the absence of fluid pressure in the interior of the inner elastic tube and a longer length in an expanded state when the fluid pressure is applied to the interior of the elastic inner tube. The tube has an undulating state in the contracted state and controls and contains expansion of the inner tube when the hose is in the expanded state. At least one sleeve portion is provided between the elastic inner tube and the outer tube along a part of the elastic inner tube where undulation of the outer tube occurs in the contracted state for protecting the elastic inner tube from abrasion undulations of the outer tube.

A reinforced hose includes an inner layer, a reinforcing intermediate layer, and an outer layer. The inner layer has and inwardly projecting sealing rib extending circumferentially on an inner surface thereof. The inner surface may also have an end stop to be engaged by a fitting received in the hose. The outer layer has a pair of annular clamp guides projecting outwardly which are axially spaced from an end of the hose. The sealing rib is positioned between the clamp guides to indicate an optimum location for a hose clamp.

The present invention relates to a telescopic drainpipe assembly, which includes a spiral telescopic pipe body and a first adapter connected to one end of the spiral telescopic pipe body. The first adapter includes a hollow first adapter seat and a first pipe connector connected to the first adapter seat, the first pipe connector is spirally provided, and the first pipe connector is in threaded connection to the spiral telescopic pipe body. The telescopic drainpipe assembly is capable of increasing the drainage length as required, or shortening the length as required for storage. Moreover, the first adapter is capable of being installed to the spiral telescopic pipe body through threaded connection. The structure is reasonable, easy to disassemble and assemble, convenient for replacing the spiral telescopic pipe body as needed, and the first adapter can be reused, thereby effectively saving usage, costs.

A converter hose includes a self-sealing connector coupled to a hose. Related methods include attaching the converter hose to a shower head, faucet or spigot.

A converter hose includes a self-sealing connector coupled to a hose. Related methods include attaching the converter hose to a shower head, faucet or spigot.

A mask system and an air delivery conduit for use in the treatment of respiratory disorders. The air delivery conduit may comprise a textile having an airtight arrangement. A support structure may be provided to the conduit to provide form.

Polyarylene sulfide compositions are described that exhibit high strength and flexibility. Methods for forming the polyarylene sulfide compositions are also described. Formation methods include dynamic vulcanization of a polyarylene sulfide composition that includes an impact modifier dispersed throughout the polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier throughout the composition. The crosslinking agent reacts with the impact modifier to form crosslinks within and among the polymer chains of the impact modifier. The compositions can exhibit excellent physical characteristics at extreme temperatures and can be used to form, e.g., tubular member such as pipes and hoses and fibers.

Polyarylene sulfide compositions are described that exhibit high strength and flexibility. Methods for forming the polyarylene sulfide compositions are also described. Formation methods include dynamic vulcanization of a polyarylene sulfide composition that includes an impact modifier dispersed throughout the polyarylene sulfide. A crosslinking agent is combined with the other components of the composition following dispersal of the impact modifier throughout the composition. The crosslinking agent reacts with the impact modifier to form crosslinks within and among the polymer chains of the impact modifier. The compositions can exhibit excellent physical characteristics at extreme temperatures and can be used to form, e.g., tubular member such as pipes and hoses and fibers.

A wear-resistant multi-layer retractable water pipe, comprising a retractable inner pipe; a one- or multi-layer retractable fabric sleeve; and a retractable wear-resistant protective layer, wherein the retractable inner pipe is nested in the fabric sleeve, and the fabric sleeve is nested in the retractable wear-resistant protective layer. The present disclosure has the following advantages: the pressure bearing capacity of the water pipe is improved; second, the fabric sleeve is not easily worn and scratched, and the service life of the water pipe is prolonged; even if the inner pipe is broken, the outermost wear-resistant protective layer has a certain pressure resistance, ensuring that the water pipe can continue to be used, the service life of the water pipe is prolonged; and, the outermost wear-resistant protective layer has a smooth surface and therefore is easy to clean.

A converter hose includes a self-sealing connector coupled to a hose. Related methods include attaching the converter hose to a shower head, faucet or spigot.