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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
Josef Merkle1
13 Nov 1978
TL;DR: A pneumatic spring for motor vehicles is described in this article, which includes two supports as well as closed spring volumes and two spring surfaces of different sizes which surfaces are subjected to pressure in opposite directions and which are variable as a function of road clearance.
Abstract: A pneumatic spring for motor vehicles which includes two supports as well as closed spring volumes and two spring surfaces of different sizes which surfaces are subjected to pressure in opposite directions and which are variable as a function of road clearance. The surfaces are supported coaxially against one another with the spring volume being formed by two roll bellows defining a common chamber. Effective spring surfaces of the bellows facing away from each other are supported upon spring pistons of different diameters which are connected together. The spring pistons and a casing associated with the roll bellows form the two supports.

40 citations

Patent
27 Feb 1978
TL;DR: In this paper, the authors describe an approach for transferring pulverulent or granular material from an opening at the lower end of a silo into a vessel which is moved to a position below such opening.
Abstract: Apparatus for transferring pulverulent or granular material from an opening at the lower end of a silo into a vessel which is moved to a position below such opening has a vertical duct with a rigid upper section which is affixed to the silo, a rigid lower section which is surrounded by and is rigidly connected to a downwardly tapering funnel and serves to discharge flowable material into the vessel by way of an opening in the top wall of the vessel, and a bellows which is disposed between and is separably connected with the two rigid sections. The lower section and the funnel are movable up and down by means of a winch and several cables or chains whose lower end portions are attached to the funnel and/or to the lower section. A cover which normally overlies the open upper side of the funnel is movable to a raised position in which it surrounds the upper section of the duct. This provides room for insertion of an outer bellows whose lower end portion is sealingly connectable with the upper end portion of the funnel and whose upper end portion is connectable with the marginal portion of the cover. Air which is expelled from the vessel flows between the funnel and the lower section of the duct in the lower position of the cover; such air escapes by way of a pipe on the cover. When the cover is raised and the outer bellows surrounds the bellows of the duct, the compartment admits air into the annular space between the two bellows, and the air again escapes by way of the aforementioned pipe on the cover.

40 citations

Patent
04 Jul 1986
TL;DR: A hydraulically damping bearing as discussed by the authors consists of two bearing halves adapted to be axially inserted into one another which include elastic bellows halves connected with the outer and inner bushing.
Abstract: A hydraulically damping bearing which includes an inner bushing arranged in an outer bushing and an elastic element inserted therebetween. Chambers are provided within the elastic element which are filled with a damping medium and are connected with each other hydraulically by way of throttling channels extending in the area of the outer bushing. The throttling channels terminate in the chambers which, like the throttling channels, are sealed off against the outside. The bearing consists of two bearing halves adapted to be axially inserted into one another which include elastic bellows halves connected with the outer and inner bushing. The bellows halves include mutually opposite annular beads projecting into the interior of the chamber, between which is arranged an enclosed overflow channel.

40 citations

Patent
29 Mar 1996
TL;DR: An improved system for determining the collapse of a bellows within a canister as part of a ventilator system for delivering breaths to a patient via a patient circuit is presented in this article.
Abstract: An improved system for the determining the collapse of a bellows within a canister as part of a ventilator system for delivering breaths to a patient via a patient circuit. The system measures the pressure in the bellows canister external of the bellows and measures the pressure within the interior of the bellow. A processor compares the pressures and determines when the pressure within the canister exceeds a predetermined offset in excess of the pressure within the interior of the bellows to conclude that the bellows is in a collapsed condition. In the preferred embodiment, the processor also uses, as input data, the flow delivered by the ventilator to the bellows canister to determine that offset value. When a bellows empty condition is determined, various actions can be taken, among them to signal an alarm and also to change various functions of the ventilator to prevent further difficulties in the overall system. In addition, the recognition of a bellows collapsed condition and an alarm or remedial action provides a safety measure to the patient in the event the pressure sensor that measures the pressure in the patient breathing circuit is missing or fails to a zero level.

40 citations

Patent
24 Apr 1981
TL;DR: In this paper, a two chambered support for a bearing, shaft or mounting which dampens vibration by hydraulic movement against a diaphragm and a flexible bellows is described.
Abstract: A two chambered support for a bearing, shaft or mounting which dampens vibration by hydraulic movement against a diaphragm and a flexible bellows is described.

40 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202358
2022118
202194
2020195
2019344
2018614