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US4852595A
Expired / Lapsed
US
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Machine for etching objects
Assignee: Hollmuller Hans Maschinenbau GmbH and Co
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Filing: 1988-05-12
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Granted: 1989-08-01
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Expires: 2008-05-12
Abstract
Abstract In a machine for etching objects, a nozzle assembly carries out an oscillating movement transverse to the conveying direction, in which the objects to be etched are guided through the machine. The device, which produces the oscillating movement, comprises a drive motor, whereof the rotary movement is converted by means of a cam disc into the oscillating movement of the nozzle assembly. The cam disc, on whose outer contour pressure engagement members of the nozzle assembly bear against two diametrically opposed points, has the contour of a cardioid. Due to this, a particularly linear displacement-time characteristic of the oscillation movement between the reversing points is achieved, which contributes to making the etching process more uniform.
Inventors
- 👤 Dietfried Baier
- 👤 Ivan Grasa
- 👤 Rainer Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:15
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K3/068; C; C23; C23F; C23F1/00; C23F1/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
182 words
A machine for etching objects, in particular for the production of plates for electronic circuits which includes (a) a housing (1), (b) at least one nozzle assembly (20) mounted within said housing, said assembly including a plurality of nozzles which are adapted to spray a liquid etching medium in a specific spray pattern, (c) means to guide the objects through the spray pattern formed by the liquid etching medium, (d) an oscillation device operatively connected to said nozzle assembly which sets the nozzle assembly in an oscillating movement, said oscillation device including a drive motor (37), having a rotary movement and a cam disc (39) operatively connected both to each other and to the nozzle assembly whereby rotary movement of the drive motor (37) is by means of the cam disc (39) converted into an oscillating movement of the nozzle assembly (20), said oscillating movement having an effective outer contour that is heart-shaped, and (e) two engagement members (40, 41) operatively connected to the nozzle assembly (20) and engageable with diametrically opposed points of the outer contour of said cam disc (39).
Claim 2
Dependent Claim
182 words
A machine for etching objects, in particular for the production of plates for electronic circuits which includes (a) a housing (1), (b) at least one nozzle assembly (20) mounted within said housing, said assembly including a plurality of nozzles which are adapted to spray a liquid etching medium in a specific spray pattern, (c) means to guide the objects through the spray pattern formed by the liquid etching medium, (d) an oscillation device operatively connected to said nozzle assembly which sets the nozzle assembly in an oscillating movement, said oscillation device including a drive motor (37), having a rotary movement and a cam disc (39) operatively connected both to each other and to the nozzle assembly whereby rotary movement of the drive motor (37) is by means of the cam disc (39) converted into an oscillating movement of the nozzle assembly (20), said oscillating movement having an effective outer contour that is heart-shaped, and (e) two engagement members (40, 41) operatively connected to the nozzle assembly (20) and engageable with diametrically opposed points of the outer contour of said cam disc (39).
Claim 3
Dependent Claim
15 words
A machine according to claim 1 wherein said pressure engagement member (40, 41) are rollers.
Claim 4
Dependent Claim
16 words
A machine according to claim 1 wherein the shape of the cam disc (39) is cardioid.
Claim 5
Dependent Claim
31 words
A machine according to claim 1 wherein the pressure engagement members (40, 41) are arranged on a support frame (9) said support frame (9) being attached to said nozzle assembly (20).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |