Peristaltic pump with one piece tubing insert and one piece cover
First Claim
1. A peristaltic pump, comprising:
- a first member, a surface carrying member including means defining a surface at a predetermined location with respect to said first member, means supporting a plurality of elements on said first member for movement in succession along a path which passes near said surface, a tube supporting member removably supported on said first member, and a flexible tube secured to said tube supporting member, said tube extending adjacent said surface and being resiliently compressed between said surface and each said element moving along said portion of said path of movement, said first member having first and second slots and respective projecting flanges which each project partially over one end of each said slot, wherein said surface carrying member has first and second L-shaped flanges each slidable disposed in a respective said slot at said one end thereof having said respective projecting flange so that said projecting flanges retain said L-shaped flanges in said slots, sliding movement of said L-shaped flanges lengthwise within said slots toward an opposite end of said slots causing said surface on said surface carrying member to move away from said movable elements.
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0 Petitions
Accused Products
Abstract
A peristaltic pump includes a panel member having a rotatably driven rotor with roller elements on it, two projections which each have insert-receiving slots, two cover-supporting slots each extending away from a respective projection, and an orientation tab disposed between the projections. A one-piece insert has a platelike portion with ends slidably received in the insert-receiving slots, a recess which receives the orientation tab, and two pairs of aligned projections on opposite sides thereof, the insert further including a flexible tube extending around the rotor and having its ends engaging respective projections on one side of the platelike portion. A cover member is removably supported on the panel member by flanges which slidably engage the cover-receiving slots and by locking surfaces thereon which engage locking surfaces on the projections, the cover member including a curved surface adjacent and facing the roller elements on the rotor, and serving as a cover for the tube and rotor.
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Citations
23 Claims
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1. A peristaltic pump, comprising:
- a first member, a surface carrying member including means defining a surface at a predetermined location with respect to said first member, means supporting a plurality of elements on said first member for movement in succession along a path which passes near said surface, a tube supporting member removably supported on said first member, and a flexible tube secured to said tube supporting member, said tube extending adjacent said surface and being resiliently compressed between said surface and each said element moving along said portion of said path of movement, said first member having first and second slots and respective projecting flanges which each project partially over one end of each said slot, wherein said surface carrying member has first and second L-shaped flanges each slidable disposed in a respective said slot at said one end thereof having said respective projecting flange so that said projecting flanges retain said L-shaped flanges in said slots, sliding movement of said L-shaped flanges lengthwise within said slots toward an opposite end of said slots causing said surface on said surface carrying member to move away from said movable elements.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A peristaltic pump, comprising:
- a first member and a cover member, said cover member being removably supported on said first member, said cover member having a surface which is at a predetermined location with respect to said first member when said cover member is removably supported on said first member, means supporting a plurality of elements on said first member for movement in succession along a path, said path being near said surface with said cover member removably supported on said first member, and a flexible tube supported on said first member, said tube extending adjacent said surface and being resiliently compressed between said surface and each said element moving along said path of movement with said cover member removably supported on said first member, said first member having first and second slots and respective projecting flanges which each project partially over one end of each said slot, said cover member having first and second L-shaped flanges each slidably disposed in a respective said slot at said one end thereof having said projecting flange so that said projecting flanges retain said L-shaped flanges in said slots, sliding movement of said L-shaped flanges lengthwise within said slots toward an opposite end of said slots causing said surface on said cover member to move away from said movable elements.
- View Dependent Claims (12, 13, 14)
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15. A peristaltic pump, comprising:
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a first member rotatably supporting a peristaltic pump rotor and opposed slots adjacent said rotor, and a platelike insert fixedly carrying and extending substantially perpendicular to the plane of a generally U-shaped flexible tube and being rearwardly slidably inserted edgewise in said opposed slots in said first member so that said U-shaped tube partly surrounds said rotor; a cover member fixed in front of said first member and inserted for covering id platelike insert and blocking forward movement of said platelike insert edgewise out of said opposed slots in said first member. - View Dependent Claims (16, 17, 18)
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19. A peristaltic pump, comprising:
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a rotor supporting member having a front surface; a rotor protruding from said front surface and rotatable in a plane parallel to said front surface and having an orbiting peripheral portion; a peristaltic pumping tube unit comprising a tube mounting member and a u-shaped tube having a U-shaped mid-portion and end portions extending from opposite sides of said mid-portion to fixed engagement with said tube mounting member; a cover having a concave U-shaped surface for firmly holding said U-shaped mid-portion of said U-shaped tube against said rotor peripheral portion in a peristaltic pumping position, namely a position for peristaltic pumping upon rotation of said rotor with respect to said U-shaped tube, said cover having a portion resiliently bendable with respect to said rotor supporting member, said cover and rotor supporting member integrally incorporating in one piece relation therewith cooperative releasable locking means of resilient snap fit type for precisely and fixedly locating said cover in a peristaltic pumping position on said rotor supporting member, said locking means being free of separate fasteners on said cover and rotor supporting member, said locking means being hand lockable and releasable without tools, said locking means including said resiliently bendable portion of said cover, said snap fit locking means including (1) ramp means on at least one of said cover and rotor supporting member slidable on ramp engaging means on the other of said cover and rotor supporting member for automatic resilient bending of said resiliently bendable portion of said cover with respect to said rotor supporting member during sliding of said cover on said rotor supporting member towards said peristaltic pumping position, and (2) step means ending said ramp means and ramp engaging means for snap fit locking of said cover in said peristaltic pumping position on said rotor supporting member, said cover and rotor supporting member integrally incorporating cooperative slide guide means for guiding said sliding of said cover on said rotor supporting member and therewith guiding movement of (1) said concave U-shaped surface of said cover toward said rotor and simultaneously (2) said locking means of said cover toward said locking means of said rotor supporting member. - View Dependent Claims (20, 21, 22, 23)
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Specification