Fluid delivery apparatus
OwnerFreddie Eng Hwee Leeinventor
Life of this patent
Estimating the term…
Abstract
A pump apparatus that exerts a constant force on a bag of fluid to provide a uniform flow rate compared to elastomeric pumps. The apparatus comprises a first and a second block member positioned over a plate, which are moveable to define an opening to receive a wedge member attached on the plate. The block members are coupled by a resilient means that is extendable when the wedge member is urged into the opening. The extended resilient means is retractable such that the plate exerts a constant force on the bag to expel fluid in a uniform flow rate.
Claims13
An apparatus for fluid delivery from a flexible container, the apparatus comprising:
- a bottom casing;
- a top casing attached to the bottom casing;
- a wedge member disposed between the bottom casing and the top casing, the wedge member comprising a first edge contactable with an edge of a first block member, and a second edge contactable with an edge of a second block member, the first and second edges of the wedge member forming a curvilinear profile;
- the flexible container disposed between the wedge member and the bottom casing;
- the first and the second block members arranged between the wedge member and the top casing, a narrow end of the wedge member is disposed between the first and second block members;
- and
- a resilient means coupled to at least one of the first and second block members,
- wherein the resilient means causes the first and second block members to move towards each other by which the wedge member moves towards the bottom casing to squeeze the fluid out of the flexible container.
A kit of parts for assembling a pump apparatus for fluid delivery, the kit of parts comprising:
- a bottom casing;
- a plate having a first and a second surface;
- at least a first and a second block member;
- a wedge member attachable to the second surface of the plate, the wedge member comprising a first edge contactable with an edge of the first block member, and a second edge contactable with an edge of the second block member, the first and second edges of the wedge member forming a curvilinear profile;
- a resilient means for coupling the first and second block members, the first and second block members moveable to define at least an opening for receiving the wedge member;
- and
- a top casing attachable to the bottom casing, the top casing for supporting the first and second block members when attached to the bottom casing.
Dependencies are inferred from the claim text.