PERISTALTIC PUMP

• US 3,756,752 A
• Filed: 12/20/1971
• Issued: 09/04/1973
• Est. Priority Date: 12/20/1971
• Status: Expired due to Term

• Current Assignee: G H Stenner & Company Incorporated
• Original Assignee: Gustav H. Stenner
• Inventors: Stenner, Gustav H.
• Primary Examiner(s): Croyle, Carlton R.
• Assistant Examiner(s): Gluck, Richard E.
• Application Number:
  US05/209,605
• Time in Patent Office: 624 Days
• Field of Search: 417/474,475,476,477,63 418/45 226/91
• US Class Current: 417/477.1
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A peristaltic pump including a readily replaceable tube with nipples affixed to the tube ends and which fit and are anchored by sockets in the pump casing, and a rotor disk provided with a tube guide for guiding a replacement tube into operative position in the casing.

Claims

1. In a peristaltic pump comprising a pump body with an internal generally cylindrical wall between an open front side to a back side of said body, said wall defining a generally cylindrical pumping chamber in said body, said body comprising a tube anchoring socket communicating with said chamber and an opening through said body into said chamber and said opening being laterally exposed through the front side of said body, said opening being peripherally displaced around said wall from said socket, a pumping tube, anchoring means at one end of said tube for anchoring engagement in said socket, a rotatable shaft coaxial with said cylindrical chamber, a tube compressing element carried by said shaft disposed within said chamber for traversingly compressing said tube against said wall upon rotation of said shaft, tube inserting guide means fixed to said shaft and rotatable therewith, said guide means comprising a finger portion extending generally radially from said shaft toward said wall and disposed between said socket and said open front side, said finger portion being adapted and arranged upon rotation of said shaft to feed said tube, when its said anchoring means is so anchored in said socket, into said chamber along said wall from said socket to said opening.

2. The combination according to claim 1 wherein said opening comprises a second socket and the other end of said tube is provided with anchoring means for anchoring engagement therein.

3. The combination according to claim 2 wherein said anchoring means and sockets include interfitting surfaces forming respective tongue and groove connections for retaining said tube ends against longitudinal movement therein.

4. The combination according to claim 1 wherein said guide means comprises a disk of which said finger portion comprises a lip of a tube-passing notch extending into the peripheral edge portion of the disk, and wherein said disk mounts said element and at least one additional tube compressing element.

5. The combination according to claim 4 wherein said body is proviDed with transparent front cover means removably attached thereto and wherein said disk is transparent.