Viscous medium feeder
AssigneeMydata Automation AB
InventorsWilliam Holm, Kenth Nilsson, Peter Svalling
Life of this patent
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Abstract
A viscous medium feeder, which has an inlet, an outlet, a tubular portion, a rotatable cylindrical shaft arranged in and extending coaxially with the tubular portion, and a drive motor connected to the shaft. The tubular portion has an internal thread, which is connected, at one end thereof, to the inlet, and, at the other end thereof, to the outlet. Further, the tubular portion is elastic, and the shaft abuts the inner wall portions of the tubular portion.
Claims14
A viscous medium feeder for providing medium droplets having substantially even amounts, comprising:
- an inlet;
- an outlet;
- a tubular portion having an internal thread connected, at one end thereof, to said inlet, and connected, at the other end thereof, to said outlet, said tubular portion being elastic;
- a rotatable shaft having a cylindrical surface of constant radius arranged in and extending coaxially with said tubular portion, said shaft abutting inner wall portions of said tubular portion;
- and
- a drive motor connected to said shaft,
- wherein said inner wall portions comprise a substantially constant diameter portion and an adjacent portion with a ridge of said internal thread, an edge portion of said inlet is arranged in the substantially constant diameter portion at one end of the elastic tubular portion and extends through a side wall of the elastic tubular portion, and said substantially constant diameter inner wall portion being arranged for sealing abutment against said shaft;
- and wherein said inlet ends at the beginning of said internal thread.
A viscous medium jetting device for providing medium droplets having substantially even amounts, comprising:
- a viscous medium container;
- a viscous medium feeder connected to said viscous medium container;
- and an eject mechanism connected to said viscous medium feeder,
- wherein said viscous medium feeder comprises:
- an inlet;
- an outlet;
- a tubular portion having an internal thread connected, at one end thereof, to said inlet, and connected, at the other end thereof, to said outlet, said tubular portion being elastic;
- a rotatable shaft having a cylindrical surface of substantially constant radius arranged in and extending coaxially with said tubular portion, said shaft abutting inner wall portions of said tubular portion;
- and
- a drive motor connected to said shaft,
- wherein said inner wall portions comprise a substantially constant diameter portion and an adjacent portion with a ridge of said internal thread, an edge portion of said inlet is arranged in the substantially constant diameter portion at one end of the elastic tubular portion and extends through a side wall of the elastic tubular portion, and said substantially constant diameter inner wall portion being arranged for sealing abutment against said shaft;
- and wherein said inlet ends at the beginning of said internal thread.
Dependencies are inferred from the claim text.