A hose assembly defines a longitudinal axis and includes an inner core tube, a thermal distribution element, and a heating element. The thermal distribution element surrounds the inner core tube, the thermal distribution element including a metalized coated film. The heating element surrounds the inner core tube, the heating element being in thermal contact with the metalized coated film.

A hose assembly defines a longitudinal axis and includes an inner core tube, a thermal distribution element, and a heating element. The thermal distribution element surrounds the inner core tube, the thermal distribution element including a metalized coated film. The heating element surrounds the inner core tube, the heating element being in thermal contact with the metalized coated film.

A rubber hose includes a distinctly colored inner wear indicator integrated into its liner, wherein a distance b of the inner wear indicator from the inner surface of the liner is less than 40% of the liner's thickness v, and height h of the wear indicator, measured perpendicularly to a longitudinal axis of the hose, falls between 1% to 90% of liner thickness v, or even from 10% to 40% of the liner thickness v. The inner wear indicator may have concentric sectional surface area of the inner wear indicator may even gradually decrease in the radial direction as a function of distance from the longitudinal axis. The rubber hose may be connected at one end to a plunger pump and connected at a second to a common manifold, in an oilfield pump system, or used in any hose application in an oilfield fluid pump system.

The invention relates to a thermoplastic elastomeric bellow duct (10) having a corrugated duct segment (12) interposed between two elbowed segments (14, 18), wherein at least one of the elbowed segments (18) is made of thermoplastic elastomeric and connected to an end section (22) of the corrugated duct segment (12) by overmolding the elbowed segment (18) over the end section (22) of the corrugated duct segment (12), and wherein the end section (22) of the corrugated duct segment (12) includes a guiding and sealing arrangement (50) pointing away from the corrugated duct segment (12) in a radial direction (32). The invention further relates to an air duct (80) having such a thermoplastic elastomeric bellow duct (10).

A highly extendable and retractable dual elastic hose comprises a tubular inner fluid conduit made of an elastomeric material and an elastic tubular outer sleeve of interwoven webbing made out of braided strands of textile yarns wherein embedded a plurality of evenly distributed highly elastic rubber strings extending horizontally along its longitudinal length. The inner tube is secured to the tubular outer sleeve only at an inlet coupler and an outlet coupler. Both the inner tube member and the outer tube sleeve can automatically expand longitudinally up to five times its unexpanded or contracted length resulting from pressurized fluid within the hose. To provide a linearly extendable and retractable dual elastic hose constructed with elastic materials both in the inner tube and the outer sleeve, it shows advantages of an improvement in expandable ratio of the outer sleeve and a reduction of strain forces required for the inner elastic tube to elongate the outer sleeve. A prolonged service life of the dual elastic hose is expected due to an effective reduction of frictional contacts and frictional resistance between the internal wall of the outer sleeve and the outer wall of the inner tube from less relative movements a lubricant layer between the two walls.

A self-sealing hose includes an inner rubber layer comprising a first rubber material; and an outer rubber layer comprising a second rubber material. The second rubber material has an ultimate strain of at least 100% and an elastic limit of at least about 7 MPa. The first rubber material has a modulus measured at 250% elongation of less than about 10 kPa.

A self-sealing hose includes an inner rubber layer comprising a first rubber material; and an outer rubber layer comprising a second rubber material. The second rubber material has an ultimate strain of at least 100% and an elastic limit of at least about 7 MPa. The first rubber material has a modulus measured at 250% elongation of less than about 10 kPa.

The present disclosure contains embodiments of an apparatus, system and method designed to facilitate learning or efficient multitasking involving movement and solar energy where users' movement devices process or respond to different stimuli to facilitate users moving while learning, working, or participating in a simulation. In some embodiments this may be accomplished with the aid of a circular treadmill, spherical walkway, or combinable modular trackpads that may be linked to allow a user to lay the apparatus in a path suited for a plurality of environments. The embodiments of the disclosure involve the user moving while processing information and receiving feedback, assistance related to that movement, processing, or any combination thereof while combining the motion of the movement device with the feedback loop sent from sensor relays a user may receive an optimal experience for learning while moving. Some embodiments make efficient use of solar energy for classroom education management.

The present disclosure contains embodiments of an apparatus, system and method designed to facilitate learning or efficient multitasking involving movement and solar energy where users' movement devices process or respond to different stimuli to facilitate users moving while learning, working, or participating in a simulation. In some embodiments this may be accomplished with the aid of a circular treadmill, spherical walkway, or combinable modular trackpads that may be linked to allow a user to lay the apparatus in a path suited for a plurality of environments. The embodiments of the disclosure involve the user moving while processing information and receiving feedback, assistance related to that movement, processing, or any combination thereof while combining the motion of the movement device with the feedback loop sent from sensor relays a user may receive an optimal experience for learning while moving. Some embodiments make efficient use of solar energy for classroom education management.

A drain configured to evacuate leaks of fluid, such as fuel, from a leak collecting system of an aircraft, the drain comprising a rigid tube secured to a plate, the plate being configured to be attached to an external wall of the aircraft, a flexible pipe configured to join the collecting system to the rigid tube, one end of the flexible pipe being received within the rigid tube. The rigid tube comprises a channel, the channel being configured to allow separation of the rigid tube from the plate at the location of the channel.