Back to results
US 7,478,999 B2Granted
Peristaltic pump
AssigneeCole-Parmer Instrument Company
InventorRobert F. Limoges
Life of this patent
Estimating the term…
Abstract
A peristaltic pump for pumping fluids through a flexible tube has a pump body, a support structure, a tube retaining mechanism and a linkage mechanism. Locating features make sure that the support structure is at a fixed location with respect to the pump body when the pump is in the closed position. The support structure controls movement of the retaining mechanism. The linkage mechanism applies the necessary force to move the support structure so that the pump is moved from an open position to a closed position.
Claims34
A peristaltic pump selectively movable between an open position and a closed position, comprising:
- a pump body;
- a rotor assembly supported by said pump body;
- and
- a support structure having an arcuate working surface confronting said rotor assembly and being movable relative to said pump body, wherein said pump body and said support structure are in a facing relationship with each other, at least one of said pump body and said support structure including locating features each defining a horizontal planar first support surface and the other of said pump body and said support structure including at least one alignment member defining a horizontal planar alignment surface, said at least one alignment member engaging said locating features when said pump is in the closed position so that said support structure is at a fixed location with respect to said pump body when said pump is in the closed position and wherein as said support structure moves with respect to said pump body, said pump moves between said open position and said closed position.
1 more element
A peristaltic pump comprising:
- a pump body;
- a rotor assembly supported by said pump body;
- and
- a support structure movable relative to said pump body, wherein said support structure includes
- a front face;
- an arcuate working surface extending away from said front face and confronting said rotor assembly;
- a rear face;
- a bearing track extending away from said rear face in a direction opposite said front face, said bearing track including an arcuate surface, a centerpoint of both said arcuate working surface and said bearing track being coincident with one another;
- and
- an opening, said opening including sloped lateral edges approaching an apex toward a bottom edge of said support structure.
7 more elements
A peristaltic pump comprising:
- a pump body;
- a rotor assembly supported by said pump body;
- a support structure having an arcuate working surface confronting said rotor assembly and being movable relative to said pump body;
- and
- a tube retaining mechanism including a retainer carrier movable in a vertical direction relative to the pump body and having a fixed retainer and a movable retainer each carried by the retainer carrier and movable therewith in the vertical direction relative to the pump body;
- selective movement of said movable retainer being determined by selective movement of said support structure relative to said pump body.
3 more elements
A peristaltic pump comprising:
- a pump body;
- a rotor assembly supported by said pump body;
- a support structure movable relative to said pump body, wherein said support structure includes
- a front face;
- an arcuate working surface extending away from said front face and confronting said rotor assembly;
- a rear face;
- a bearing track extending away from said rear face in a direction opposite said front face, said bearing track including an arcuate surface, a centerpoint of both said arcuate working surface and said bearing track being coincident with one another;
- and
- an opening, said opening including sloped lateral edges approaching an apex toward a bottom edge of said support structure;
- a tube retaining mechanism including a retainer carrier having a fixed retainer and a movable retainer each carried by the retainer carrier;
- selective movement of said movable retainer being determined by selective movement of said sloped lateral edges of said support structure;
- and
- a linkage mechanism, said linkage mechanism including an actuating lever and a link arm, a pivot point permitting said actuating lever to pivot about said link arm;
- wherein a first end of said linkage mechanism is selectively connected to said bearing track and a second end of said linkage mechanism is selectively connected to said pump body, said pivot point being disposed between said first end and said second end;
- and
- wherein when said actuating lever is in a closed position, said linkage mechanism locks said support structure to said pump body to lock said pump.
13 more elements
Dependencies are inferred from the claim text.