Back to results
US 5,846,061 AGranted
Peristaltic metering pump
AssigneeBoard of Trustees of Michigan State University
InventorsRichard L. Ledebuhr, Gary R. Van Ee
Life of this patent
Estimating the term…
Abstract
A multiple channel peristaltic metering pump includes a base having a pair of spaced apart bearings, a rotor supported on the base and an occlusion member. The rotor includes a rotation shaft in the bearings and a plurality of rollers mounted thereon. A pair of occlusion rings, which are located concentrically with the rotation shaft by the bearings, position the occlusion member with respect to the rollers. Each of the rollers is rotated about a bearing which is located in an opening having sufficient size to allow expansion of lubricant under high operating temperatures. A hose expansion space adjacent the rotor takes up any elongation of the hoses in order to avoid crimping. Hose spacers in the expansion space prevent hose creep along the rotor.
Claims34
A multiple channel peristaltic pump, comprising:
- a base including a pair of spaced apart bearings;
- a rotor supported on said base, said rotor including a rotating drive shaft in said bearings and a plurality of rollers mounted thereon;
- an occlusion member spaced from said rotor by at least two occlusion rings in order to maintain a consistent separation distance between an occlusion surface of said occlusion member and said rollers, said occlusion rings located concentrically with said rotation shaft by said bearings;
- multiple hoses between said rotor and said occlusion surface;
- wherein said occlusion member is removably supported on said base to accommodate replacement of hoses;
- and
- a pivot supporting one end of said occlusion member and at least one removable clamp supporting an opposite end of said occlusion member.
4 more elements
A multiple channel peristaltic pump, comprising:
- a base including a pair of spaced apart bearings;
- a rotor supported on said base, said rotor including a rotating drive shaft in said bearings and a plurality of rollers mounted thereon;
- an occlusion member spaced from said rotor by at least two occlusion rings in order to maintain a consistent separation distance between an occlusion surface of said occlusion member and said rollers, said occlusion rings located concentrically with said rotation shaft by said bearings;
- multiple hoses between said rotor and said occlusion surface;
- an expansion cavity in said base extending to said rotor and configured to accommodate expansion of said hoses;
- and
- a manifold assembly including fittings for opposite ends of said hoses.
4 more elements
A multiple channel peristaltic pump, comprising:
- a base including a pair of spaced apart bearings;
- a rotor supported on said base, said rotor including a rotating drive shaft in said bearings and a plurality of rollers mounted thereon;
- an occlusion member spaced from said rotor by at least two occlusion rings in order to maintain a consistent separation distance between an occlusion surface of said occlusion member and said rollers, said occlusion rings located concentrically with said rotation shaft by said bearings;
- multiple hoses between said rotor and said occlusion surface;
- an expansion cavity in said base extending to said rotor and configured to accommodate expansion of said hoses;
- and
- hose spacers in said cavity for preventing axial creep of said hoses along said rotor.
4 more elements
A multiple channel peristaltic pump, comprising:
- a base including a pair of spaced apart bearings;
- a rotor supported on said base, said rotor including a rotating drive shaft in said pair of bearings, at least two hubs mounted to said shaft and a plurality of rollers mounted between said hubs, wherein each of said rollers includes a tubular member defining an opening in each end thereof and a bearing in each said opening receiving a pin extending from one of said hubs, wherein each said opening has sufficient volume to contain a sufficient amount of lubricant for the associated bearing and an expansion space to accommodate expansion of the lubricant;
- an occlusion member including an occlusion surface spaced from said rollers;
- and
- multiple hoses between said rotor and said occlusion surface.
2 more elements
A multiple channel peristaltic pump, comprising:
- a base including at least one bearing;
- a rotor supported on said base, said rotor including a rotation shaft in said at least one bearing and a plurality of rollers mounted thereon;
- an occlusion member including an occlusion surface spaced from said rollers;
- a plurality of hoses between said rollers and said occlusion member;
- and
- an expansion cavity in said base extending to said rotor wherein said hoses are constrained to form an angle sufficient to allow said hoses to bow in said expansion cavity and said expansion cavity is configured to accommodate expansion of hoses.
3 more elements
A multiple channel peristaltic pump, comprising:
- a base including at least one bearing;
- a rotor supported on said base, said rotor including a rotation shaft in said at least one bearing and a plurality of rollers mounted thereon;
- an occlusion member including an occlusion surface spaced from said rollers;
- a plurality of hoses between said rotor and said occlusion member;
- and
- hose spacers separate from said rotor and said occlusion member between adjacent pairs for preventing axial creep of hoses along the rotor.
3 more elements
A multiple channel peristaltic pump, comprising:
- a base including a pair of spaced apart bearings;
- a rotor supported on said base, said rotor including a rotation shaft in said bearings and a plurality of rollers mounted thereon;
- an occlusion member including an occlusion surface spaced from said rollers;
- a plurality of hoses between said rotor and said occlusion surface;
- a primary inlet for connection with a primary liquid source and at least one hose defining a primary channel and an auxiliary inlet valve for connection with an auxiliary liquid source, at least one of said hoses connected between said inlet valve and said inlet manifold selectively mixing in constant proportion an auxiliary liquid with the primary liquid when the inlet valve is open.
2 more elements
A multiple channel peristaltic pump, comprising:
- a base including at least one bearing;
- a rotor supported on said base, said rotor including a rotative drive shaft in said at least one bearing;
- an occlusion member spaced from said rotor and defining an occlusion surface;
- and
- a plurality of hoses between said occlusion member and said rotor;
- wherein said occlusion member and said base are joined at one portion by at least one pin on one of said occlusion member and said base in at least one slot on the other of said occlusion member and said base, and wherein said occlusion member and said base are joined at an opposite portion by at least one clamp between said occlusion member and said base, wherein said at least one slot is angled to draw said occlusion member toward said rotor so that said occlusion member is self-centering with respect to said rollers.
3 more elements
A multiple channel peristaltic pump, comprising:
- a base including at least one bearing;
- a rotor supported on said base, said rotor including a rotation shaft in said at least one bearing and a plurality of rollers mounted thereon;
- an occlusion member including an occlusion surface spaced from said rollers;
- a plurality of hoses between said rotor and said occlusion member;
- and
- an inlet manifold including hose fittings for one end of said hoses and a plurality of inlet fittings for connection with a source of fluid.
3 more elements
Dependencies are inferred from the claim text.