Resources Contact Us Home
Expanding bellows for expulsion tank

Image Number 4 for United States Patent #4213545.

A positive expulsion tank incorporates an expanding bladder in the form of a metal bellows, which is adapted to undergo elastic deformation during a product storage condition to provide for thermal cycling of a stored product, and plastic deformation, during a product expulsion operation to achieve high efficiency expulsion of product from the tank. Convolution crests of the bellows are internally reinforced by rings, whereby plastic deformation of the bellows is caused to occur primarily in the root areas during the expulsion operation. As a result, the root areas are displaced radially outwardly towards the wall of the tank incident to axially directed extension of the bellows to lie in essential alignment with their adjacent crests when the bellows has been fully extended to complete the expulsion operation, thereby providing for expulsion efficiencies in excess of 97 percent.

  Recently Added Patents
Arcuate motion control in electrostatic actuators
Transferring a document
Method for driving bistable display device
Level-shift circuit, electro-optical device, and level shift method
Multi-room user interface
Methods for processing 2Nx2N block with N being positive integer greater than four under intra-prediction mode and related processing circuits thereof
Method and apparatus for providing charging status information to subscriber of communication service
  Randomly Featured Patents
Schizophrenia related gene
Methods of immune modulation with death receptor-induced apoptosis
Formaldehyde synthesis
Method and apparatus for incorporating state information into a URL
Device and method for illuminating luminescent paintballs
Process for preparing alkali metal-doped fullerenes
Hyperfiltration membranes having separation layers of monomolecular films of surfactants
Carboxylic acid of cyclopentadiene derivative, salt thereof, or ester thereof and process for producing these compositions
Steering cylinder with integral servo and valve
Intelligent network and method for providing voice telephony over ATM and alias addressing