US3902883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a stack of plates
Assignee: Electrovac AG
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Filing: 1973-06-07
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Granted: 1975-09-02
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Expires: 1993-06-07
Abstract
Abstract A method of the production of a stack of glass plates which comprises the steps of covering a first plate of glass with grains (particles) of a grain fraction (particle-size fraction), limited to no more than 25 microns with no more than 25% of the particles being of the upper grain-size limit, whereby the grains are spacedly disposed in a single layer; at distances surpassing the average grain size. The second plate of glass is applied to the first plate of glass, and the process is repeated until the desired number of glass plates have been stacked, and the stack is heated with application of pressure, and finally the stack is cooled.
Inventors
- 👤 Helmut Bayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:32
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B23/207; C03B23/203; C03B23/24; C03B23/245; H; H01; H01G; H01G4/00; H01G4/30; H01M; H01M50/00; H01M50/50; H01M50/528; H01M8/00; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A METHOD OF MAKING A PLATE STACK COMPRISING THE STEPS OF: A. APPLYING TO A SURFACE OF A GLASS PLATE A THIN-LAYER ELECTRODE, B. THEREAFTER DEPOSITING ON SAID SURFACE A SINGLE LAYER OF GLASS GRAINS HAVING A MAXIMUM PARTICLE SIZE OF ABOUT 100 MICRONS AND A MINIMUM INTERPARTICLE SPACING AT LEAST 10 TIMES GREATER THAN THE MINIMUM PARTICLE SIZE, THE PARTICLE SIZE VARIATION OF THE GRAINS BEING NO MORE THAN SIX MICRONS FOR GRAINS OF AN UPPER PARTICLE SIZE OF TWENTY FIVE MICRONS AND BEING NO MORE THAN 25% OF THE UPPER PARTICLE SIZE FOR GRAINS HAVING AN UPPER PARTICLE SIZE GREATER THAN TWENTY FIVE MICRONS, C. APPLYING A SECOND GLASS PLATE HAVING A THIN-LAYER ELECTRODE ON A SURFACE THEREOF CONFRONTING THE FIRST MENTIONED GLASS PLATE TO SAID LAYER OF GRAINS THEREON,
Claim 2
Independent Claim
132 words
A METHOD OF MAKING A PLATE STACK COMPRISING THE STEPS OF: A. APPLYING TO A SURFACE OF A GLASS PLATE A THIN-LAYER ELECTRODE, B. THEREAFTER DEPOSITING ON SAID SURFACE A SINGLE LAYER OF GLASS GRAINS HAVING A MAXIMUM PARTICLE SIZE OF ABOUT 100 MICRONS AND A MINIMUM INTERPARTICLE SPACING AT LEAST 10 TIMES GREATER THAN THE MINIMUM PARTICLE SIZE, THE PARTICLE SIZE VARIATION OF THE GRAINS BEING NO MORE THAN SIX MICRONS FOR GRAINS OF AN UPPER PARTICLE SIZE OF TWENTY FIVE MICRONS AND BEING NO MORE THAN 25% OF THE UPPER PARTICLE SIZE FOR GRAINS HAVING AN UPPER PARTICLE SIZE GREATER THAN TWENTY FIVE MICRONS, C. APPLYING A SECOND GLASS PLATE HAVING A THIN-LAYER ELECTRODE ON A SURFACE THEREOF CONFRONTING THE FIRST MENTIONED GLASS PLATE TO SAID LAYER OF GRAINS THEREON,
Claim 3
Dependent Claim
36 words
The method defined in claim 1, further comprising the step of deforming an edge portion of at least one plate of each pair to hermetically seal the space between each pair of plates during step (e).
Claim 4
Dependent Claim
27 words
The method defined in claim 1, further comprising the step of inserting spacer strips between each pair of plates in addition to the respective layers of grains.
Claim 5
Dependent Claim
21 words
The method defined in claim 3 wherein said strips have thicknesses in excess of the average particle size of said grains.
Claim 6
Dependent Claim
24 words
The method defined in claim 3 wherein said strips are composed of a material having a greater coefficient of thermal expansion than said grains.
Claim 7
Dependent Claim
26 words
The method defined in claim 3 wherein said strips are composed of electrically conductive material and make electrical contact with at least one of said layers.
Claim 8
Dependent Claim
44 words
The method defined in claim 1 wherein said grains and said plates are composed of materials having different 15-hour destraining temperatures, said stack being heated in step (e) to a temperature above the lower 15-hour destraining temperature but below the upper 15-hour destraining temperature.
Claim 9
Dependent Claim
24 words
The method defined in claim 1, further comprising the step of bending the plates of said stack under heat and pressure in step (e).
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |