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US 10,376,636 B2Granted
Compact mechanical pump
AssigneeRepro-Med Systems, Inc.
InventorAndrew I Sealfon
Life of this patent
Estimating the term…
Abstract
A compact mechanical pump is provided. The pump is adjustable between a compact form and an expanded form, where the pump can be reduced to a compact form for ease of portability and storage and to the expanded form for use as a pump.
Claims31
A pump enclosure assembly comprising:
- an expandable base having a proximal end and a distal end, the base comprising:
- a first base section and a second base section, wherein the first base section is in sliding engagement with the second base section such that the first base section and the second base section are slidably movable relative to each other between a compacted position and an expanded position, wherein the base in the expanded position is adapted to seat a chamber body having a plunger, wherein the chamber body defines a bore and an outlet, and the plunger is slidably disposed within the bore;
- a pusher in sliding engagement with the base, wherein the pusher is dimensioned to contact the head of the plunger;
- a puller in sliding engagement with the base;
- a spring comprising a first end portion and a second end portion, wherein the first end portion is connected to the puller and the second end portion is connected to the pusher, whereby slidably moving the puller distally when the chamber body having the plunger is seated in the base causes the pusher to contact and exert force on the head of the plunger;
- and
- an expandable cover pivotally connected to the proximal end of the base, a linkage pivotally coupled between the cover and the puller and structured and arranged to translate the opening of the cover to the movement of the puller and pusher towards the proximal end, and the closing of the cover when the chamber body has been disposed engages the pusher against the plunger and moves the puller towards the distal end and tensions the spring;
- wherein the expandable base and expandable cover enclose the chamber body, the spring, puller, and pusher structured and arranged to provide force to the plunger of the chamber body providing a pressure pump.
5 more elements
A pump enclosure assembly, comprising:
- a housing having a distal end and a proximal end, the housing comprising:
- (a) an expandable base comprising a first base section and a second base section, wherein the first base section is in sliding engagement with the second base section such that the first base section and the second base section are slidably movable relative to each other between a compacted position and an expanded position, wherein the base in the expanded position is adapted to seat a chamber body having a plunger, wherein the chamber body defines a bore and an outlet, and the plunger is slidably disposed within the bore;
- (b) an expandable cover comprising a first cover section and a second cover section, wherein the first cover section is in sliding engagement with the second cover section, and wherein the cover is pivotally connected to the base at a position allowing the cover to open and close, and such that slidably moving the second base section relative to the first base section moves together the second cover section relative to the first cover section when the cover is in the closed position;
- a pusher in sliding engagement with the base, wherein the pusher is dimensioned to contact the head of the plunger;
- a puller in sliding engagement with the base;
- a spring comprising a first end portion and a second end portion, wherein the first end portion is connected to the puller and the second end portion is connected to the pusher;
- and
- a first linkage pivotally coupled to the cover and the puller, wherein the pivots of the first linkage are located to move the puller towards the distal end when the cover is lowered and move the puller towards the proximal end when the cover is raised,
- whereby moving the puller towards the distal end by lowering the cover when the chamber body having the plunger is seated in the base causes the pusher to contact and exert force on the head of the plunger, the spring, puller, and pusher structured and arranged to providing force to the plunger of the chamber body providing a pressure pump.
6 more elements
Dependencies are inferred from the claim text.