US4284005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the metered feeding of ink to a ductor roll of an offset printing device
Assignee: Bauerle Mathias GmbH
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Filing: 1979-03-09
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Granted: 1981-08-18
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Expires: 1999-03-09
Abstract
Abstract An apparatus for a metered feeding of ink to a ductor roll of an offset printing device. The ductor roll is adapted to be dipped into an ink pool which is connected to a device for supplying metered amounts of ink. The device for supplying the metered amounts of ink is controlled by an installation for monitoring a level of ink in the ink pool. The monitoring installation includes a distance sensor which is constructed as a capacitive proximity switch.
Inventors
- 👤 Reinhold Weigele
- 👤 Wolfgang Pfeil
- 👤 Horst Purr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:21
CPC Classifications
B; B41; B41F; B41F31/00; B41F31/02; B41F31/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
140 words
An apparatus for metered feeding of ink to a revolvable ductor roll adapted to be dipped in an ink pool comprising: pump means for supplying a metered amount of ink to said ink pool; capacitive proximity sensor means for monitoring a level of ink in the ink pool and for providing a control signal to the pump means; control means including timer means for delaying a delivery of said control signal from said capacitive proximity sensor means to said pump means until a predetermined time after the ductor roll begins a revolution; wherein the capactive proximity sensor means is associated with an area of said ink bath where an ink bead forms upon revolution of the ductor roll, whereby a predetermined amount of ink is metered into said ink pool upon receipt of said control signal by said pump means.
Claim 2
Independent Claim
140 words
An apparatus for metered feeding of ink to a revolvable ductor roll adapted to be dipped in an ink pool comprising: pump means for supplying a metered amount of ink to said ink pool; capacitive proximity sensor means for monitoring a level of ink in the ink pool and for providing a control signal to the pump means; control means including timer means for delaying a delivery of said control signal from said capacitive proximity sensor means to said pump means until a predetermined time after the ductor roll begins a revolution; wherein the capactive proximity sensor means is associated with an area of said ink bath where an ink bead forms upon revolution of the ductor roll, whereby a predetermined amount of ink is metered into said ink pool upon receipt of said control signal by said pump means.
Claim 3
Dependent Claim
66 words
An apparatus according to claim 1, wherein the pump means includes at least two nozzle means for feeding ink to the ink pool, and in that the capacitive proximity sensor means is arranged essentially between the two ink feeding nozzle means, the two ink feeding nozzle means are disposed at a mutual distance corresponding at least approximately to one-half an axial length of the ductor roll.
Claim 4
Dependent Claim
26 words
An apparatus according to claim 2, wherein exchangeable distributor line means are provided for operatively connecting the two ink feeding nozzle means to the pump means.
Claim 5
Dependent Claim
65 words
An apparatus according to claim 2, wherein the pump means includes an exchangeable cartridge means for accommodating a supply of ink, a plunger means is provided in the cartridge means for displacing the predetermined amount of ink from the cartridge means to the ink pool, and in that means are provided for automatically advancing the plunger means in a stepwise fashion by a predetermined distance.
Claim 6
Dependent Claim
52 words
An apparatus according to claim 4, wherein the means for automatically advancing the plunger means includes an advance drive means and an actuating plunger stem operatively connected with the plunger means and advance drive means, and in that detent means are provided for holding the actuating plunger stem in respective advanced positions.
Claim 7
Dependent Claim
45 words
An apparatus according to claim 5, wherein a limit switch means is provided for sensing a position of the plunger stem and for interrupting a drive of the advance drive means upon the plunger stem reaching an advanced position corresponding to an empty cartridge means.
Claim 8
Independent Claim
30 words
An apparatus according to one of claims 4, 5 or 6, wherein the control means are operatively connected with the advance drive means and with the capacitive proximity sensor means.
Claim 9
Dependent Claim
65 words
An apparatus according to claim 1, wherein the pump means includes an exchangeable cartridge means for accommodating a supply of ink, a plunger means is provided in the cartridge means for displacing the predetermined amount of ink from the cartridge means to the ink pool, and in that means are provided for automatically advancing the plunger means in a stepwise fashion by a predetermined distance.
Claim 10
Dependent Claim
53 words
An apparatus according to claim 8, wherein the means for automatically advancing the plunger means includes an advance drive means and an actuating plunger stem operatively connected with the plunger means and the advance drive means, and in that detent means are provided for holding the actuating plunger stem in respective advanced positions.
Claim 11
Dependent Claim
45 words
An apparatus according to claim 9, wherein a limit switch means is provided for sensing a position of the plunger stem and for interrupting the drive of the advance drive means upon the plunger stem reaching an advanced position corresponding to an empty cartridge means.
Claim 12
Independent Claim
29 words
An apparatus according to one of claims 8, 9, or 10, wherein the control means are operatively connected with the advance drive means and the capacitive proximity sensor means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |