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Disposable rolling diaphragm filling unit

  • US 5,540,568 A
  • Filed: 09/27/1994
  • Issued: 07/30/1996
  • Est. Priority Date: 07/26/1993
  • Status: Expired due to Term
First Claim
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1. A filling unit for transporting a material from a source to a container comprising:

  • a housing having a base and a head mounted on said base;

    a flexible rolling diaphragm fixedly attached to said head and positioned to abut said base in a releasable sealable manner to define between said diaphragm and said head a working chamber in said housing;

    drive means within said base for reciprocating said diaphragm;

    port means on said head for providing material intake and discharge ports for said working chamber; and

    said head with fixedly attached diaphragm and port means forming an integral module removable as a unit from said base without detachment of the diaphragm.

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