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US4046101A Expired / Lapsed US ⏱️ 0.0 years remaining

Vacuum apparatus for treating articles, particularly a vacuum evaporator

Assignee: Balzers Patent und Beteiligungs AG
•
Filing: 1976-09-20
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Granted: 1977-09-06
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Expires: 1996-09-20
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Abstract

Abstract A vacuum apparatus for treating articles, particularly a vacuum evaporator, for applying coatings of material onto articles, such as lenses, comprises a housing which defines an interior treatment chamber. The chamber includes a support means for supporting a substance to be evaporated which includes means for electrically heating the substance located at a bottom wall and which includes an opposite top wall which carries a support for the article to be coated or treated. A foil material capable of being electrically heated is supported in the housing in spaced location from the side and the top walls at least and it is held in position by clamping elements which provide means for connecting the foil to an electrical supply source for supplying a heating current.

Inventors

  • 👤 Otto Winkler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 05:50
CPC Classifications
F; F04; F04B; F04B37/00; F04B37/02; C; C23; C23C; C23C14/00; C23C14/22; C23C14/56; C23C14/564

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 102 words
A vacuum apparatus for vapor deposition on articles, comprising a housing defining an interior treatment chamber with top, bottom and side walls, article support means in said chamber for supporting an article to be treated, evaporation material support means for supporting a substance to be evaporated spaced from said article support means, pump means connected to said housing for evacuating said housing chamber, a heatable vapor-deposit burner-foil material located in said chamber in spaced relationship to and shielding at least one of said walls, and support means for supporting said foil material within said chamber and for supplying electrical heating current thereto.
Claim 2
Dependent Claim 102 words
A vacuum apparatus for vapor deposition on articles, comprising a housing defining an interior treatment chamber with top, bottom and side walls, article support means in said chamber for supporting an article to be treated, evaporation material support means for supporting a substance to be evaporated spaced from said article support means, pump means connected to said housing for evacuating said housing chamber, a heatable vapor-deposit burner-foil material located in said chamber in spaced relationship to and shielding at least one of said walls, and support means for supporting said foil material within said chamber and for supplying electrical heating current thereto.
Claim 3
Dependent Claim 33 words
A vacuum apparatus, according to claim 1, wherein said support means comprise clamping devices, said foil comprising exchangeable thin metal foils, said support means including electrical current supply leads connected to said foil.
Claim 4
Dependent Claim 53 words
A vacuum apparatus, according to claim 1, wherein said foil material is supported on each of the sides and top wall of said chamber, said support means comprising clamping elements holding said foil material in spaced relationship to the interior wall and providing an insulated electrical connection to the exterior of said chamber.

References Cited (Backward Citations)

US2408614A Cited
US2557379A Cited
US2812411A Cited
US2884894A Cited
US2986115A Cited
US3757083A Cited
US3957547A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-05 1981-03-07 1981-09-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-05 1985-03-07 1985-09-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-05 1989-03-07 1989-09-06 $7700.00 Window Closed / Lapsed

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