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
Storage system, control method therefor, and program
ASICs having programmable bypass of design faults
Non-visual presentation of information on an electronic wireless device
Method of estimating remaining constant current/constant voltage charging time
DRAM refresh method and system
Sensor apparatus and information processing apparatus
Selected alert delivery in a distributed processing system
  Randomly Featured Patents
Variable doping of metal plugs for enhanced reliability
Certified transmission system
UV protected electrochromic device
Side dump trailer for particulate material
Apparatus for making rubberless tire bead assemblies
Processes for the preparation of linezolid intermediate
Garment for occupants of personal recreational vehicles
Stable adenoviral vectors and methods for propagation thereof
Method and apparatus for closing a powered closure of a vehicle
Continuous production process of tertiary alcohols by radical addition of secondary alcohols to alkenes