Delivery device
First Claim
1. A delivery device for delivering predetermined amounts of fluid, comprising:
- a body;
a container filled with fluid to be delivered, wherein the container is arranged inside the body and comprises an opening for expelling the fluid and a wall movable inside the container;
a threaded, unitary plunger rod movably arranged within a threaded central passage inside the body in a longitudinal direction and a front end of the threaded, unitary plunger rod in contact with the movable wall;
a manually operated push mechanism movable in the longitudinal direction and arranged to, upon operation, move the plunger rod toward the movable wall, thereby expelling fluid; and
a movement transformer arrangement configured to transform a generally linear movement of the push mechanism into an axial and rotational movement of the plunger rod,wherein the movement transformer comprises a first set of surfaces arranged to the manually operated push mechanism inclined with respect to the longitudinal direction and co-acting with a second set of inclined surfaces arranged on a rotatable drive mechanism rotatably locked to the plunger rod.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a delivery device for delivering predetermined amounts of fluid, comprising a body (10), a container (16) filled with fluid to be delivered arranged inside said body, said container comprising an opening for expelling said fluid and a wall (18) movable inside said container (16), a threaded plunger rod (46) arranged movable inside said body (10) in the longitudinal direction and in contact with said movable wall (18), a manually operated push means (14, 60) movable in the longitudinal direction capable of, upon operation, move said plunger rod (46) towards said movable wall (18), thereby expelling fluid, and means for transforming a generally linear movement of said push means (14, 60) to a rotational movement of said plunger rod (46).
8 Citations
14 Claims
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1. A delivery device for delivering predetermined amounts of fluid, comprising:
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a body; a container filled with fluid to be delivered, wherein the container is arranged inside the body and comprises an opening for expelling the fluid and a wall movable inside the container; a threaded, unitary plunger rod movably arranged within a threaded central passage inside the body in a longitudinal direction and a front end of the threaded, unitary plunger rod in contact with the movable wall; a manually operated push mechanism movable in the longitudinal direction and arranged to, upon operation, move the plunger rod toward the movable wall, thereby expelling fluid; and a movement transformer arrangement configured to transform a generally linear movement of the push mechanism into an axial and rotational movement of the plunger rod, wherein the movement transformer comprises a first set of surfaces arranged to the manually operated push mechanism inclined with respect to the longitudinal direction and co-acting with a second set of inclined surfaces arranged on a rotatable drive mechanism rotatably locked to the plunger rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification