Device for administering a liquid product
First Claim
1. A device for the administration of a liquid product, comprising a receptacle for storing the product, a piston plug axially moveable in an advancing direction toward an outlet of the receptacle by an output member, and a connecting mechanism comprising a plurality of hook elements comprised of flexurally elastic bristles spaced about a non-threaded portion of an outer circumferential surface of the output member, wherein the flexurally elastic bristles are arranged in at least one ring and protrude obliquely away from the advancing direction of the output member, said connecting mechanism for releasably connecting the piston plug to the output member by way of the flexurally elastic bristles to secure a connection between piston plug and output member against axial displacement of the output member relative to the piston plug wherein the connection between the piston plug and output member is releasable by relative twisting between the piston plug and the output member.
3 Assignments
0 Petitions
Accused Products
Abstract
A device for dispensing a substance, including a receptacle for the product, a piston plug axially moveable in the receptacle, an output member associated with the device for causing the piston plug to move axially, and a connecting mechanism for detachably connecting the output member to the piston plug by axially displacement of the output member and the piston plug relative to each other, wherein, after being connected, the output member and piston plug may be separated by relative twisting.
28 Citations
26 Claims
- 1. A device for the administration of a liquid product, comprising a receptacle for storing the product, a piston plug axially moveable in an advancing direction toward an outlet of the receptacle by an output member, and a connecting mechanism comprising a plurality of hook elements comprised of flexurally elastic bristles spaced about a non-threaded portion of an outer circumferential surface of the output member, wherein the flexurally elastic bristles are arranged in at least one ring and protrude obliquely away from the advancing direction of the output member, said connecting mechanism for releasably connecting the piston plug to the output member by way of the flexurally elastic bristles to secure a connection between piston plug and output member against axial displacement of the output member relative to the piston plug wherein the connection between the piston plug and output member is releasable by relative twisting between the piston plug and the output member.
- 9. A device for administering a liquid product, comprising a receptacle for the product, a piston plug axially moveable by an output member in an advancing direction toward an outlet of the receptacle to cause product to be dispensed from the receptacle, and a connecting mechanism comprising a plurality of hook elements comprised of flexurally elastic bristles disposed on a non-threaded surface and arranged in at least one ring configuration arranged on one of the piston plug and an outer circumferential portion of the output member and a cavity defined by threaded walls disposed on the other of the piston plug and the outer circumferential portion of the output member, the connecting mechanism for releasably connecting the piston plug to the output member, wherein a connection between the piston plug and the output member is established by axial, linear displacement of the output member and the piston plug relative to one another, wherein when the piston plug and the output member are connected, said connecting mechanism prevents axial displacement of the output member and of the piston plug relative to one another, and wherein the connection is releasable by relatively twisting the piston plug and the output member.
- 11. A device for the administration of a liquid product, comprising a receptacle for storing the product, a piston plug comprising a cavity defined by screw-like threads, the piston plug axially moveable in an advancing direction toward an outlet of the receptacle by an output member to cause product to be dispensed from the receptacle, and a connecting mechanism comprising a plurality of hook elements formed of flexurally elastic bristles spaced about a non-threaded portion of an outer circumferential surface of the output member for releasably connecting the piston plug to the output member to secure a connection between piston plug and output member against axial displacement of the output member relative to the piston plug, the connection being established by engagement of one or more of the plurality of flexurally elastic bristles of the connecting mechanism with the screw-like threads of the piston plug, and the connection being releasable by relative twisting between the piston plug and the output member.
Specification