Topic
Bellows
About: Bellows is a research topic. Over the lifetime, 15312 publications have been published within this topic receiving 73914 citations.
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Patent•
16 Aug 1988TL;DR: A hand-held air sampling pump can be operated with one hand to consistently sample an exact, predetermined volume of air by causing a bellows to compress and then elongate to form a vacuum inside of the bellows.
Abstract: A hand-held air sampling pump can be operated with one hand to consistently sample an exact, predetermined volume of air by causing a bellows to compress and then elongate to form a vacuum inside of the bellows to draw an air sample through a detector tube and into the bellows.
27 citations
Patent•
05 May 1989TL;DR: In this paper, the second stage interface is independently engaged by means of a bolted flange and a bellows, and a soft metal such as indium is employed at the contact surfaces of the heat stations.
Abstract: Demountable cryocoller cold heads must make reliable contacts having low thermal resistance at cryogenic temperatures for cooling such devices as radiation shields used in superconducting magnets. Cryostat vacuum and a bellows is utilized in order to engage the cold head second stage interface, while the first stage interface is independently engaged by means of a bolted flange and a bellows. A soft metal such as indium is employed at the contact surfaces of the heat stations.
27 citations
TL;DR: In this paper, an electrostatic microactuator was developed by using a novel fabrication technique which combines excimer laser ablation and polymer/metal film deposition, the actuator consists of ∼2.5 μm thick parylene (poly- para -xylelene) polymer bellows and gold electrodes.
Abstract: The bellows-shape electrostatic microactuator was developed by using a novel fabrication technique which combines excimer laser ablation and polymer/metal film deposition. The actuator consists of ∼2.5 μm thick parylene (poly- para -xylelene) polymer bellows and gold electrodes. The actuator is 1.2 mm in diameter and the bellows part is a hollow screw thread the pitch of which is 23 μm. Parylene and gold electrode are evaporated on the screw-shape polyimide core mold made by excimer laser ablation. At the end of the fabrication, the core mold is removed by wet etching. The actuator is driven by DC voltage and the displacement is 30 μm (3.4% of the length of the actuator) and the actuation speed exceeded 20 μm/ms when applied 100 V.
27 citations
Patent•
25 Apr 2006TL;DR: A tubular radiation absorbing device designed for a solar heating application is described in this article, which has a metal central tube and a glass tubular jacket surrounding the central tube, and a folding bellows is connected between them.
Abstract: A tubular radiation absorbing device ( 1 ) designed for a solar heating application is described The tubular radiation absorbing device has a metal central tube ( 3 ) and a glass tubular jacket ( 2 ) surrounding the central tube ( 3 ) A folding bellows ( 11 ) is connected between the central tube ( 3 ) and the tubular jacket ( 2 ), so that the tubular jacket and the central tube are movable relative to each other A connecting element ( 20 ) connects an inner end of the folding bellows ( 11 ) with the central tube ( 3 ) and extends from the inner end of the folding bellows ( 11 ) through an inner annular space ( 30 ) between the folding bellows ( 11 ) and the central tube ( 3 ) The connecting element includes at least a part of a hydrogen window ( 50 ) A getter ( 6 ) is arranged in an outer annular space ( 33 ) between the folding bellows ( 11 ) and the tubular jacket ( 2 )
27 citations