×

Collapsible conduit for linear peristaltic pump and method of making the same

  • US 4,854,836 A
  • Filed: 02/18/1986
  • Issued: 08/08/1989
  • Est. Priority Date: 02/18/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. A conduit for transmitting fluids, comprising a one-piece, flexible, resilient, non-elastomeric, thermoplastic tube having an inlet portion, an outlet portion, and intermediate portion disposed between said inlet and outlet portions;

  • all of said portions being integral with each other;

    said inlet and outlet portions having flow passages of the same cross sectional area and walls of the same thickness, respectively;

    said intermediate portion including an enlarged section having a flow passage of substantially greater cross sectional area, a wall with at least a part thereof having substantially lesser thickness, and a substantially lower resistance to deformation, than those of said inlet and outlet portions;

    said enlarged section includes a cup-shaped body portion defining a cavity and an integral membrane portion extending over said cavity;

    said membrane portion having a wall thickness substantially less than that of said body portion; and

    said membrane portion generally extending along a plane parallel with the longitudinal axis of said conduit when said conduit is in a linear undeformed state.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×