Patent US1058693A successfully refreshed from Google Patents.
Patent US3923072A successfully refreshed from Google Patents.
US3923072A
Expired / Lapsed
US
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Apparatus for the treatment of parts by successive immersions in at least two baths
Assignee: BEAUD JEAN LOUIS
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Filing: 1974-09-05
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Granted: 1975-12-02
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Expires: 1994-09-05
Abstract
Abstract Apparatus for successively immersing articles in different baths, as in galvanoplasty or in cleaning parts by using a series of cleaning solutions. A treatment vessel is provided in which to immerse the parts first in one bath, then in another. The various baths are supplied to the treatment vessel through independent siphon conduits, each connected to one of a plurality of bath reservoirs located below the vessel so that when it is desired to empty the vessel, the bath liquid can be siphoned back to the reservoir from which it came through the same siphon conduit by which it was furnished the treatment vessel in the first place. In order to avoid the use of pumps, the baths are transferred from each of the reservoirs by individually pressurizing each reservoir, thereby forcing the bath up through its siphon conduit into the treatment vessel. By using siphons in this manner, accidental intermixing of the bath solutions is prevented.
Inventors
- 👤 Jean-Louis Beaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:07
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/02; B; B05; B05C; B05C3/00; B05C3/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
Apparatus for successively immersing parts in at least two baths comprising a treatment vessel in which the parts are immersed, a plurality of separate bath reservoirs disposed below said vessel such that a bath in said vessel can flow by gravity into said reservoirs, a plurality of siphon conduits each connecting one of said reservoirs with said vessel for siphoning a bath in said vessel to said one reservoir, and means for pressurizing each of said reservoirs in order to force the bath therein into said vessel through the corresponding one of said siphon conduits.
Claim 2
Dependent Claim
95 words
Apparatus for successively immersing parts in at least two baths comprising a treatment vessel in which the parts are immersed, a plurality of separate bath reservoirs disposed below said vessel such that a bath in said vessel can flow by gravity into said reservoirs, a plurality of siphon conduits each connecting one of said reservoirs with said vessel for siphoning a bath in said vessel to said one reservoir, and means for pressurizing each of said reservoirs in order to force the bath therein into said vessel through the corresponding one of said siphon conduits.
Claim 3
Dependent Claim
71 words
Apparatus as defined in claim 1, which further includes a plurality of capillary siphon tubes corresponding in number to said reservoirs, each said capillary siphon tube connecting one of said reservoirs with said treatment vessel, the mouth of each of said capillary siphon tubes at said treatment vessel being disposed as near as possible to the lowest point in said treatment vessel in order to thoroughly empty it of its contents.
Claim 4
Dependent Claim
88 words
Apparatus as defined in claim 1, wherein each of said siphon tubes terminates at said reservoir in a pair of branches, one of said branches being fitted with a check valve permitting the flow of the bath into said reservoir, and the other of said branches being fitted with a check valve permitting the flow of the bath into said treatment vessel, the mouth of said other branch being surrounded by a filter for filtration of the bath leaving the reservoir in the direction of the treatment vessel.
Claim 5
Dependent Claim
34 words
Apparatus as defined in claim 1, which further includes a siphon rinsing conduit that enters said treatment vessel both for supplying rinsing liquid thereto and for evacuating said rinsing liquid from said treatment vessel.
Claim 6
Dependent Claim
42 words
Apparatus as defined in claim 4, wherein said siphon rinsing conduit is connected to a drain and is provided with a pair of elbows intermediate the drain and said treatment vessel, said elbows being arranged to form a retention column between them.
Claim 7
Dependent Claim
37 words
Apparatus as defined in claim 5, which includes a venturi in said siphon rinsing conduit at the top of said retention column for injecting rinsing fluid into said rinsing conduit and propelling it toward said treatment vessel.
Claim 8
Dependent Claim
44 words
Apparatus as defined in claim 4, wherein the elbow of the siphon rinsing conduit is disposed higher than the elbows of said siphon conduits connection said reservoirs to said treatment vessel in order to prevent flow of the baths through said siphon rinsing conduit.
Claim 9
Dependent Claim
46 words
Apparatus as defined in claim 4, which further includes a capillary siphon rinsing tube having its mouth at said treatment vessel disposed as near as possible to the lowest point in said treatment vessel in order to thoroughly empty the rinsing liquid from said treatment vessel.
Claim 10
Dependent Claim
49 words
Apparatus as defined in claim 1, wherein said reservoirs comprise hermetically enclosed containers, each including an expansible air chamber accessible from outside said container so that when pressure is applied internally of said chamber its volume increases to pressurize said container forcing the bath therein into said treatment vessel.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |