Bellows

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

Apparatus for covering the track joint (track joint cover) between the rotary plate and the bellows of a connection between two hinge-linked vehicle sections

Abstract: The invention relates to an apparatus ( 12 ) for covering the track joint between the rotary plate ( 7 ) and the bellows of the connection ( 1 ) between two hinge-linked vehicle sections ( 3 a, 3 b ), said bellows comprising two side walls ( 2 a ) that are joined together through a bellows roof ( 2 c ) at least, said track joint cover ( 12 ) having, like the bellows of said connection ( 1 ), singular corrugations or pleats ( 13 ), neighboring corrugations or pleats ( 13 ) being joined together by clamping ledges ( 16 ) in the region of their one apex at least, and the clamping ledges ( 16 ) being fastened at their one end at least to the side wall ( 2 a ) of the bellows ( 2 ) so as to be vertically movable.

Pneumatic spring with oscillation damper adjusted as a function of the support pressure

Abstract: Spring strut with a pneumatic spring and an oscillation damper which can be adjusted as a function of the support pressure. The pneumatic spring has a spring space bounded by a U-type bellows, which spring space is pneumatically connected to a damping device which can be adjusted as a function of a support pressure. A component which having a duct connects the spring space and the damping device is embodied without a hose and is integrated in the spring strut in such a way that it does not form any essential surface change in an unrolling piston associated with the U-type bellows and the unrolling piston forms at least a part of this duct.

Air assisted medical devices

Abstract: An air assisted device for positioning or moving a limb or a joint uses compressed air as a motive force. In a first embodiment, the air assisted device is a one piece air bag with bellows or accordion-like construction to allow controlled variable degrees of abduction. The bag is placed between a limb to be positioned and a relatively fixed body part or other surface. As compressed air enters the bag, the bag expands and moves the limb away from the body part or other surface. If the bag is maintained in an expanded condition, it immobilizes the limb relative to the body part or other surface. As the bag deflates, the limb returns to its original position. In a second embodiment, the device utilizes a pneumatic piston and cylinder unit to provide the motive force for positioning two relatively movable parts. As compressed air is forced into the cylinder, the piston moves outwardly, moving one of the relatively movable parts away from the other part. Relative movement of the parts moves the limb toward or away from the body part or other surface. The air assisted device may also be used to resist motion of a limb.

Hydraulic engine mount with air bellows tuning

Abstract: A hydraulic mount assembly is disclosed having a partition forming two hydraulic chambers and including a damping decoupler. A primary chamber is formed by an elastomeric member and a secondary chamber by a resilient diaphragm. During dynamic loading of the mount, fluid passes through an orifice between the two chambers of the mount causing expansion and contraction of the diaphragm. An expandable, pneumatic bellows is mounted within the primary chamber. A vent tube provides controlled fluid communication between the bellows and the atmosphere to provide a relatively soft mount for engine isolation. Air entry into the bellows is induced by the built-in spring memory of the bellows causing expansion. Air may be removed or partially removed from the bellows by an external vacuum source, causing a negative pressure and contraction. By controlling bellows expansion and contraction in this manner, the dynamic rate of the mount assembly may be selectively reduced at higher vibration frequencies; that is, those over 20 Hz. An assist spring may be provided in the bellows. Further, by evacuating the bellows, a relatively hard mount with standard operating parameters may be provided; i.e. a mount having relatively high damping and high rate for better control under extreme driving conditions. A control circuit with on-board transducers is provided to monitor vehicle operating and road conditions and modulate the pressure by controlling venting of the bellows and the vacuum in the bellows for maximum operating efficiency.

Dust collector for building engineering

Abstract: The utility model discloses a dust collector for building engineering, including mobile device, controlling means, sprinkler, the mobile device includes that automobile body, walking are taken turns,the pull rod, the bottom at the automobile body is installed to the walking wheel, sprinkler includes bellows, the storage water tank, bellows, the top of storage water tank is provided with the backup pad, the top surface of backup pad is fixed with two elevating gear, the last swing joint of elevating gear has the barrel, install the high -pressure pump on the storage water tank, the entrance point water tank of high -pressure pump is connected, the water delivery hose connection has three -way water valve, three -way water valve respectively with two elevating gear on the barrel in atomizerintercommunication, the inside of bellows is fixed with the fan, gas transmission hose connection has three -way air valve, three -way air valve respectively with two elevating gear on barrel sealingconnection, controlling means includes controller, audible -visual annunciator, dust sensor, controller and fan, high -pressure pump electric connection, dust sensor and controller electric connection, controller electric connection audible -visual annunciator.