Bellows

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

End construction for bellows type envelopes and the like

Abstract: An end construction for a bellows type envelope that is particularly designed to be manufactured on automatic machinery, in which each side wall of the envelope has at its base angle, an isosceles triangle-shaped area defined by fold lines; the isosceles triangle-shaped area is folded inwardly on the altitude of the triangle, with the apex of the triangle coincident with the intersection of the planes defined by the side wall and the bottom wall of the envelope; the equal parts of the triangle on opposite sides of the altitude are secured together.

Thermostatically controlled mixing valve - has compensating spool built into main spool to allow for supply pressure fluctuations

Abstract: A thermostatically controlled regulating valve for constant temperature mixing of water has a pressure compensating stage to minimise the effects of supply pressure fluctuations. The main mixing control is effected by two orifices formed by the displacement of a floating valve poppet positioned by a bimetallic bellows stack operating against a coil compression spring. Temperature setting is dependent upon the position of a disc coupled to a spindle that may be moved axially by rotation of the input setting knob. Two supply valves for hot and cold are actuated by a lever operated actuator sleeve. Hot and cold water flows separately over the control orifices from separate paths through a pressure compensating spool in the valve base.

Bellows for aircraft access gangway - has sliding extension on guide rollers, with pivoted hydraulic ram and bumper

Abstract: The bellows is mounted on a sliding floor extension (2) to the gangway (4), with the free end of the bellows attached to a bumper (7) pivoted about a vertical axis on the extension. The upper end of the bumper is linked to a servo ram (8) mounted on the sliding floor, and the bumper frame is flexible to adapt to the shape of the aircraft. The bumper is stiffened by separately tensioned segments, the force between adjacent segments being adjustable. The single ram on each side of the gangway provides a simple fitting to replace the complex, heavy, crossed levers drive on conventional gangways.

Sound emitting and wetting doll

Abstract: A toy doll has a mouth opening adapted to receive a simulated nursing bottle from which water is fed to the interior of the doll, some of such water producing a wetting action. The doll is also adapted to produce a burping sound when its back is patted, and simultaneously to spit up through the mouth opening some of the water previously fed from the bottle. The burping sound is produced by a bellows in the body portion of the doll which is successively compressed upon patting the back of the doll and which progressively feeds air into another bellows located in the head of the doll until the head bellows reaches an expanded position. An actuating member then automatically releases the air from the expanded head bellows, which air flows in a sudden controlled flow through a sound producing device. Some of this released air also causes liquid to be emitted from the mouth opening to produce the spitting-up effect.

Flexible tube element for exhaust systems

Abstract: A flexible tube element for an exhaust pipe of a vehicle engine includes a first end and an opposite, second end; a circumferentially corrugated metal bellows extending between the first and second ends; a first stripwound metal hose arranged coaxially with the bellows between the first and second ends; a second stripwound metal hose arranged coaxially with the bellows and the first stripwound metal hose between the first and second ends; and first and second generally cylindrical connection fittings arranged at the first and second ends, respectively, and being coaxial with the bellows.