Bellows

About: Bellows is a research topic. Over the lifetime, 15312 publications have been published within this topic receiving 73914 citations.

Convenient fast pulsed molecular beam valve

Abstract: We describe a fast electromagnetic valve for generation of a pulsed supersonic molecular beam. The valve produces 70 μs pulses with typical intensities in the neighborhood of 1×1022 molecules sr−1 s−1 at frequencies to 35 Hz. It is triggered by a low voltage–low current pulsed power supply which activates externally‐mounted coils, minimizing problems of heat dissipation and electrical and magnetic interference. It also features a corrosion resistant gas reservoir isolated from the driving mechanism by a stainless steel bellows.

Reciprocating bellows operated exercise machine

Abstract: Foot treadle operated exercising apparatus of this invention provides for transfer of air from one foot treadle operated vertically disposed bellows to another through a restricted pathway adjustable in size by an adjustable valve to select a desired work load A stroke length adjustment is featured for changing the length of the stroke This is achieved with bellows that are biassed to return to an extended condition in the presence of atmospheric air Thus with a closed air system, a manually operated air admission and venting valve will increase the bellows height when opened to admit atmospheric air and will decrease the bellows height when opened and pedals are depressed to vent air The foot treadles are operable from a standing, sitting or lying position An auxiliary arm exercise harness operates in conjunction with the foot operated treadles by means of hand manipulated lines cross connected so that the left hand will depress a right foot treadle and visa versa The entire work load is effected by the transfer of air from one bellows to the other when the treadles are operated in a riding, jogging or climbing action One embodiment provides for bicycle riding type of exercise activity

Distributing device for liquid preparations

Abstract: In a distributing device for liquid preparation composed of three parts forming a single unit consisting of a receptacle, an intermediate part of a flexible texture forming a bellows fixed on the neck of the receptacle and an upper part mounted on the top of the bellows forming a reservoir finished by a nozzle closed at its ends. The intermediate part is composed of a flexible sleeve formed of several concentric rings joined together, inside which are arranged two impervious membranes separated by a rigid member having two sharpened extremities arranged vertically, perpendicular to each of the two membranes.

Bellows medical construct and apparatus and method for using same

Abstract: A medical construct particularly useful as a stent, comprising an axially compressible bellows of a material and dimensions sufficient to provide negligible resistance to flexure transverse to the axis and negligible recoil under compression or expansion along the axis, and apparatus and a method for deploying the same.

Bellows type shock absorber

Abstract: A bellows type shock absorber comprises a sealed bellows, a shock absorbing column which is provided with a chamber around it inside the bellows and which is along the axial line of the bellows and combined with the bellows so that it physically varies in conjunction with expansion and contraction of the bellows. Also, the bellows type shock absorber may have a through hole which communicates the internal chamber and the outside, and preferably the shock absorbing column is made of a kind of gelled material with a penetration value of approximately 50 to 200. In addition, another shock absorber is provided with the main bellows and a sub-bellows having a spring constant differing from that of the main bellows and a through hole which communicates the internal chamber of the main bellows and the internal chamber of the sub-bellows.