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•
20 May 1971
TL;DR: In this paper, the authors describe a system in which a pair of tanks are divided into two chambers by a bellows and the oil being received by one of the chambers is part of a separate insulating oil circuit.
Abstract: Pumping apparatus having a lubricating oil pumping circuit including a pump therefor and means for reversing the direction of flow, either means for reversing the pump or a reversing valve. The lubricating oil is pumped into or out of a pair of tanks, each divided into two chambers by a bellows and the oil being received by one of said chambers. The other of the chambers in each tank is part of a separate insulating oil circuit and by virtue of contraction and expansion of the bellows, pumps the insulating oil through check valves into a cable, compensating insulating oil being supplied from a storage tank through check valves to the other chambers and excess insulating oil being returned to the storage tank through an over pressure valve.
19 citations
Patent•
08 Jul 1999
TL;DR: In this article, a flexible tube of an exhaust pipe for motor vehicles is presented. But the tube is not made of metal, and it is made of a cylindrically corrugated bellows.
Abstract: This invention relates to a flexible tube of an exhaust pipe for motor
vehicles. The flexible tube includes a cylindrically corrugated bellows
member(10) made of metallic material; an interlock member(20) spirally formed
and positioned with a prescribed gap from the bellows member(10), and for
absorbing the displacements due to the various motions of the exhaust pipe; a
braid member(30) for surrounding the outside of the bellows member(10); two
caps(40) for pressing both end parts of the braid member(30); two ring-shaped
intermediate members(50) respectively having one end fixed to the bellows
member(10) and the other end fixed to be overlapped with the interlock
member(20) outside of the intermediate members; and an isolating member(60)
positioned in a gap between the bellows member(10) and the interlock
member(20) to prevent the bellows member(10) and the interlock member(20)
from directly contacting, wherein the isolating member(60) protects the bellows
member(10) from abrasion and damage to prevent leakage of gas, and absorbs
the extension, compression and bending displacements. Therefore, this
invention can increase its lifetime.
19 citations
Patent•
16 Nov 1988
TL;DR: In this article, a T-flanges are used to connect the bellows to different size disks corresponding to different universal joints, and intermediate sections have graduated diameters such that connections can be made with various size shafts and various size universal joints.
Abstract: A bellows for protecting knuckle joints structured so that a narrower end can be connected to a shaft and a wider end can be connected to a universal joint. Additionally, intermediate sections have graduated diameters such that connections can be made with various size shafts and various size universal joints. The bellows includes a number of T-flanges in oder to connect the bellows to different size disks corresponding to different universal joints.
19 citations
Patent•
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TL;DR: In this article, a variable orifice valve is employed as the operating valve in a single point injection well assembly with tubing pressure (fluid) operated unloading valves acting above it to provide a continuous flow system.
Abstract: A casing pressured operated, variable orifice valve is employed as the operating valve in a single point injection well assembly with tubing pressure (fluid) operated unloading valves acting above the operating valve to provide a continuous flow system. The operating valve includes a throttling range which extends between optimum injection gas pressure levels based on the amount of injection gas pressure available at the well head to thereby increase the overall efficiency of the system. The variable orifice valve includes a pressure charged bellows and a coil spring in series to produce a linear resultant load rate which in turn cooperates with contoured closure surfaces in the valve to produce a linear relationship between orifice size and injection gas pressure. Gas is thus injected into the production column or tubing at a rate which is linearly related primarily to the casing pressure with the throttling range of the operating valve producing a broad response in the gas injection rate. The injection rate is surface regulated by controlling the injection gas pressure at the well head.
19 citations