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Through the use of finite-element modeling, pressure patterns on the underside of seat foam can be computed for a variety of occupants and seating positions. A design tool has been created which allows an engineer to evaluate different layouts for a pressure-sensing bladder in just minutes....

The Issue: The trade-off to using low temperature bladder compounds in mobile hydraulic applications is higher gas permeation rates through the bladder at working temperature....

Add unbalanced mass to the surface of any rotating machine element and you present a challenge to the element's bearing system. That was the situation facing Agfa Corp. designers working on external drum plate-setters for a web-type printing press. They needed a clamp to hold down the flexible...

When drilling for oil, small amounts of high-pressure natural gas trapped in oil, shale, and other geological formations must be safely vented or burned off. In some cases, the oil contains dangerously high amounts of gas - essentially an explosive bubble - which cannot be safely trapped or burned....

A leading pipe rehabilitation contractor approached Fenner Precision to develop and manufacture a reusable, non-stick, expansion bladder that could be employed as part of their trenchless CIPP renewal system for sewer pipes....

...the clamp or just make it better for a small added cost? Maybe you should be thinking of a bladder clamp, which is essentially a rubber pillow that inflates and deflates on command. Bladder clamps reduce breakage in ice-cream cone bakeries, lug 500lb engine blocks around foundries, and manipulate...

Many species of fish use a gas bladder to control their buoyancy. The simple process of regulating the amount of gas in this bladder lets them float at any given depth without expending energy. The floating ocean monitors needed a similar technique if they were to record data for the longest...

...and open-cell foam surrounding three air-tight bladders. The bladders are made of Combitherm, a material widely used to pack food. An inner layer, which also serves as the living quarters' outer walls, is fireproof Nomex and protects the bladders from scuffs and scratches. The shell is strong enough...

...accumulators with separating elements are further divided into bladder, diaphragm, and piston designs. consist of a pressure vessel and an internal elastomeric bladder that contains the gas. The bladder is charged through a gas valve at the top of the accumulator, while a poppet valve at the bottom...

Buoyant-float designs have capabilities that go beyond the best bladder accumulators. Blowout preventer units deliver larger volumes of high-pressure fluid to stop oilwell blowouts. They can contain from 20 to 100 highpressure accumulators. Buoyant-float accumulators are a good alternative when...

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