Bellows

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

Bearing assembly systems

Abstract: A mid-span bearing support for the power take-off shaft of a fan type gas turbine engine is described. The power take-off shaft extends radially through frame struts in the core engine inlet and fan ducts of the engine. These struts are separated by a gap in which a bearing assembly is mounted to journal the power take-off shaft. This assembly includes a spring bellows which permits the height of the assembly to be reduced by a rotatable sleeve to permit retraction of interdigitating locating means in the installation and removal of the assembly. The spring bellows also provides sealing pressure of the assembly against opposed surfaces of the gap so that oil may flow through the struts and assembly for return to the engine's oil pump.

Flexible conduit for vehicle engine coolant circuits

Abstract: A flexible conduit for vehicle engine coolant circuits, which conduit comprises a series of at least a first relatively rigid portion and a second relatively deformable bellows portion capable of being deformed at least into a curved portion; and an inner and outer wall made of different plastic materials.

Load lock chamber for vertical type heat treatment apparatus.

Abstract: The title chamber has no elevating device which requires the provision of lubricating oil which is a source of particles causing contamination in the chamber. Below a treatment chamber (1) an intermediate chamber (30) is arranged. A supporting stand (34) is provided below the boat table (6) for supporting the objects to be processed, which can be loaded into or unloaded from the treatment chamber (1) gastightly through the intermediate chamber (30). The supporting stand (34) is mounted on a movable member movable vertically by means of a ball screw (13'). A bellows (22) is mounted between the intermediate chamber (30) and the movable member (12').

Frictionless hydraulic damper and damper-snubber

Abstract: A frictionless hydraulic damper including a cylinder having end walls mounting the opposite ends of a shaft with a clearance in labyrinth seals, bellows seals between each end wall and the portions of the shaft extending beyond each end wall, a piston head on the shaft within the cylinder, hydraulic fluid in the cylinder and in both bellows seals, an orifice construction located relative to the piston head for permitting flow of hydraulic fluid past the piston head to produce damping, and a conduit in the shaft for effecting communication between the two bellows. The damper as described above also functions as a snubber by including a valve construction which selectively closes the orifice construction.

An apparatus for advancing an object through a body passage

Abstract: An intestinal probe comprises a bladder (15) and an axially expandable bellows (14) connected with said bladder and being designed such that it changes its dimensions reversibly in its axial direction dependent on the pressure in its interior, and a tube (10) provided with a lumen (11) for the supply and removal of inflation medium to the bladder (15) and bellows (14), the bladder (15) and the bellows (14) being interconnected through a throttling valve (17). The throttling valve (17) ensures that the inflation of the bladder (15) is delayed relative to the axial expansion of the bellows (14), and that the deflation of the bladder (15) is delayed relative to an axial contraction of the bellows (14), and so that the intestinal probe by using one lumen (11) only for inflation medium can be advanced stepwise through a gastro-intestinal canal.