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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
19 Feb 2010
TL;DR: In this article, the authors describe an implantable fluid delivery system that includes a fluid reservoir configured to hold a supply of fluid, to dispense that fluid under the control of an actuator, and to be implanted within the body of a living host.
Abstract: An implantable fluid delivery system may include a fluid reservoir configured to hold a supply of fluid, to dispense that fluid under the control of an actuator, and to be implanted within the body of a living host. An actuator within the fluid reservoir may cause the fluid to be controllably dispensed from the fluid reservoir. The actuator may include a bellows configured to expand in a direction when inflated. The bellows may have folds with surfaces which run substantially perpendicular to the direction of expansion in a collapsed state and which define a stacked set of convolutions. Each convolution may have a collapsed height of no more than 1 mm and a width perpendicular to the direction of expansion of no more than 8 mm. Electrodes may be configured to come in electrical contact with an electrolyte within the bellows and to cause electricity to run through the electrolyte, thereby causing the electrolyte to break down into a gas and, in turn, to cause the bellows to expand. Methods of making the bellows which utilize stacked sheets are also disclosed.

34 citations

Patent
07 Dec 1995
TL;DR: A connecting means for an exhaust pipe of a vehicle includes a bellows member made of metallic material and cylindrically corrugated for absorbing the deformation force due to the expansion and contraction of the exhaust pipe.
Abstract: A connecting means for an exhaust pipe of a vehicle includes a bellows member made of metallic material and cylindrically corrugated for absorbing the deformation force due to the expansion and contraction of the exhaust pipe, an interlock member spirally formed on the inside of the bellows member and having spiral grooves for absorbing the deformation force due to the expansion and contraction of the exhaust pipe, a braid member for surrounding the outside of the bellows member, a cap for pressing an end part of the braid member, and a fixing member for combining the end parts of the bellows member and the interlock member. The fixing member includes a ring-shaped intermediate member one end part of which is welded under one end part of the bellows member, and the other end part of which is extended to be overlapped with the end part of the interlock member and provided with spiral protuberances to be fitted into the spiral grooves of the interlock member. Thereby, the service life of the connecting means is extended and product reliability is improved.

33 citations

Patent
10 Mar 1982
TL;DR: In this article, the authors measured the system level of a LIQUID in a tank with two pressure sensors and showed that the water level in the tank was different at different levels between the two sensors.
Abstract: MEASURING SYSTEM LEVEL OF A LIQUID IN A TANK FOR EXAMPLE THE WATER LEVEL IN BOILER WITH TWO PRESSURE SENSORS BELLOWS 18, 20 MONTES IN BOILER OF DIFFERENT LEVELS RESPECTIVELY THE LIMITS THEREOF LOWER AND UPPER L2, L3 BEACH VARIATION LEVEL L1 LIQUID BOOTS 24, 24 bEING FILLED FLUID AND CONNECTED BY A PIPE VERTICAL 70 AND MOVEMENT SENSOR 62 BELLOWS LOWER 24 PROVIDING AN ELECTRICAL SIGNAL PROPORTIONAL PRESSURE DIFFERENCE BETWEEN THE TWO BOOTS, SO THE WATER LEVEL IN THE BOILER TO PREVENT oVERHEATING THE REFERENCE IN THE LINE COLUMN 70 AND DESTRUCTION OF POSSIBLE BELLOWS 24, 24 IN SUCH THAT 350C TEMPERATURE AND PRESSURE 15 BARS, FLUID REFERENCE COMPRISES AN INSTRUCTOR SUBSTANCE LIQUID, AS NAK REMAINS IN LIQUID PHASE VERY HIGH TEMPERATURES EVEN THERE PRESSURE DROP IN THE BOILER NAK BEING EXTREMELY REACTIVE WITH WATER, BELLOWS 24, 24 ARE MOUNTED IN A SEALED ENVELOPE 26, 26 FILLED SUBSTANCE INERTE, SUCH AS ALLOY SnPb, SOLID STATE ROOM TEMPERATURE AND LIQUID PHASE FROM 86C, THIS ENVELOPE WITH A bELLOWS OUTSIDE 34, 34 FILLED WITH THE SAME SUBSTANCE IN COMMUNICATION WITH THE INTERIOR 46 50 ENVELOPE

33 citations

Patent
17 Apr 1997
TL;DR: In this article, a turbine air sealing and condenser air removal system for use in steam plant equipment is arranged to increase steam plant efficiency, reduce oxygen concentration in condensate being returned to the steam generators, and simplify system arrangement and maintenance.
Abstract: A turbine air sealing and condenser air removal system for use in steam plant equipment is arranged to increase steam plant efficiency, reduce oxygen concentration in condensate being returned to the steam generators, and simplify system arrangement and maintenance. This system incorporates dry running shaft seals at the high and low pressure turbine shaft glands. The turbine shaft glands are exhausted to a vacuum header which is exhausted by vacuum pumps. Air from the condenser is also exhausted to the common vacuum header. Non-rotating air seals on the turbine such as valve stem seals, which must only accommodate linear movement, can incorporate metallic bellows or conventional packings to prevent air leakage into the steam path or steam leakage out into the surrounding environment. The bellows seals may also incorporate stem glands which are exhausted to the turbine exhaust trunk to minimize the internal pressure of the bellows and prevent catastrophic failure which might occur if the bellows were to be pressurized with high pressure steam.

33 citations

Patent
Paul S. Weber1
04 Aug 1983
TL;DR: In this article, an internal cylindrical weir or sleeve is used to define an inner flushing chamber adjacent the expansion bellows wherein connections are provided on the exterior wall of the expansion joint body to allow the admission of a chemical solution or treating fluid directly onto the inside surface of the bellows from an external connection to the expansion joints.
Abstract: A novel bellows expansion joint design and method of preventing stress corrosion cracking incorporates an internal cylindrical weir or sleeve which defines an inner flushing chamber adjacent the expansion bellows wherein connections are provided on the exterior wall of the expansion joint body to allow the admission of a chemical solution or treating fluid directly onto the inside surface of the bellows from an external connection to the expansion joint. In addition, a further connection is provided to a second flushing chamber surrounding the exterior of the bellows so that a similar solution may be admitted and allowed to overflow from an upper portion of the chamber.

33 citations


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