US3838996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a secondary-emissive channel plate comprising curved channels
Assignee: US Philips Corp
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Filing: 1973-01-15
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Granted: 1974-10-01
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Expires: 1993-01-15
Abstract
Abstract So as to obtain curved channels in a channel plate having secondary electron emission, a non-uniform temperature distribution is realized in at least one thickness portion of a channel plate in which the said channels are to be formed. This non-uniform temperature distribution is such that the glass is in a state between the elastic state and the viscous state, while at the same time the plate is subjected to a mechanical stress which acts on the plate surfaces at an angle.
Inventors
- 👤 R Polaert
- 👤 V Duchenois
- 👤 M Monnier
- 👤 J Bunel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:28
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B23/0302; C03B37/00; C03B37/10; C03B37/14; C03B37/15; H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
148 words
A METHOD OF MANUFACTURING A CHANNEL PLATE COMPRISING CURVED CHANNELS, COMPRISING THE STEPS OF: A. PROVIDING A PLATE COMPRISING SUBSTANTIALLY STRAIGHT FIBERS COMPRISING A GLASS MATERIAL AND SUBSTANTIALLY PARALLEL FIRST AND SECOND SURFACES, B. ADJUSTING THE TEMPERATURE IN SAID PLATE TO PROVIDE IN AT LEAST A FIRST PORTION OF THE PLATE THICKNESS A TEMPERATURE DIFFERENTIAL PRESENT ALONG A PERPENDICULAR TO THE PLATE FACES AND PROVIDING AT THE INTERIOR OF SAID PLATE VARIOUS PLANES THAT ARE SUBSTANTIALLY ISOTHERMAL, SAID DIFFERENT TEMPERATURES IN SAID THICKNESS PORTION BEING WITHIN THE TEMPERATURE RANGE WHERE THE PART OF SAID GLASS LOCATED THEREAT IS IN A STATE BETWEEN THE VISCOUS STATE AND THE ELASTIC STATE AND THE GLASS IN ANY OTHER THICKNESS PORTIONS BEING CPMPLETELY OUT OF THE VISCOUS STATE, AND THEN C. SUBJECTING SAID PLATE TO MECHANICAL STRESS WHICH COMPRISES A FORCE THAT ACTS ON SAID PLATE SURFACES AT AN ABLIQUE ANGLE THERETO.
Claim 2
Independent Claim
148 words
A METHOD OF MANUFACTURING A CHANNEL PLATE COMPRISING CURVED CHANNELS, COMPRISING THE STEPS OF: A. PROVIDING A PLATE COMPRISING SUBSTANTIALLY STRAIGHT FIBERS COMPRISING A GLASS MATERIAL AND SUBSTANTIALLY PARALLEL FIRST AND SECOND SURFACES, B. ADJUSTING THE TEMPERATURE IN SAID PLATE TO PROVIDE IN AT LEAST A FIRST PORTION OF THE PLATE THICKNESS A TEMPERATURE DIFFERENTIAL PRESENT ALONG A PERPENDICULAR TO THE PLATE FACES AND PROVIDING AT THE INTERIOR OF SAID PLATE VARIOUS PLANES THAT ARE SUBSTANTIALLY ISOTHERMAL, SAID DIFFERENT TEMPERATURES IN SAID THICKNESS PORTION BEING WITHIN THE TEMPERATURE RANGE WHERE THE PART OF SAID GLASS LOCATED THEREAT IS IN A STATE BETWEEN THE VISCOUS STATE AND THE ELASTIC STATE AND THE GLASS IN ANY OTHER THICKNESS PORTIONS BEING CPMPLETELY OUT OF THE VISCOUS STATE, AND THEN C. SUBJECTING SAID PLATE TO MECHANICAL STRESS WHICH COMPRISES A FORCE THAT ACTS ON SAID PLATE SURFACES AT AN ABLIQUE ANGLE THERETO.
Claim 3
Dependent Claim
28 words
A method as in claim 1, wherein said plate thickness first portion in which the temperature differential is present extends over substantially the entire thickness of said plate.
Claim 4
Dependent Claim
64 words
A method as in claim 1, comprising the step of providing to said plate a body comprising two parts which slide on each other, each said part contacting at least respective ones of said plate surfaces, after which said stress is produced by a pressure force exerted via said body, whereby said body parts prevent the bending and circumferential swelling phenomena of the plate.
Claim 5
Dependent Claim
18 words
A method as in claim 3, wherein said parts further contact respective side surface portions of said plate.
Claim 6
Dependent Claim
129 words
A method as in claim 3, wherein the interior of each said part of said body corresponds in shape to the shape of the plate, and said parts respectively comprise side edges that can contact side surface portions of said plate, said side edges each having a variable height which is maximum in that normal section of the plate containing the plate diameter which is perpendicular to the shift direction of one body part with respect to the other during the deformation, and which is minimum in that normal section of the plate containing the plate diameter which is parallel to the shift direction in that part situated upwards from the shift, said height continuously decreasing elsewhere from one section to another in the upward direction of said shift.
Claim 7
Dependent Claim
90 words
A method as recited in claim 3, wherein said step of providing said body comprises welding two relatively rigid blocks to respective said plate surfaces, said blocks comprising material having both a softening temperature exceeding said temperature at said plate thickness first portion and a thermal expansion coefficient substantially equal to that of said glass material and, wherein after said application of said stress, removing said blocks by dissolving one of the weld material, on one hand, and the jacket glass and the core glass thereof on the other hand.
Claim 8
Dependent Claim
22 words
A method as recited in claim 6, wherein said blocks essentially consist of one of an iron-nickel alloy and an iron-chromium alloy.
Claim 9
Dependent Claim
13 words
A method as claimed in claim 6, wherein said blocks are of glass.
Claim 10
Dependent Claim
36 words
A method as claimed in claim 8, wherein said glass of said welded joint, the glass of said fiber cores, and said glass material of said blocks are each susceptible to attack by a common reagent.
Claim 11
Dependent Claim
35 words
A method as in claim 1, wherein at least one plate thickness portion there is present a non-uniform temperature distribution, said distribution being symmetrical with respect to the center plane of said one thickness portion.
Claim 12
Dependent Claim
17 words
A method as in claim 10, wherein said temperature is at a maximum at said center plane.
Claim 13
Dependent Claim
17 words
A method as in claim 10, wherein said temperature is at a minimum at said center plane.
Claim 14
Dependent Claim
42 words
A method as in claim 1, wherein at at least one thickness portion of said plate said temperature is non-uniform and is distributed such that said temperature increases along the thickness direction of said plate from one plate edge to the other.
Claim 15
Independent Claim
164 words
A method of simultaneously manufacturing a plurality of plates comprising curved channels, comprising the steps of: a. forming a stack containing alternately disposed blocks and plates having straight fibers, both ends of said stack being formed by respective ones of said blocks, said blocks being connected to respective plate surfaces by welded joints, said plates consisting essentially of first material that is at a first temperature range in a state between the viscous state and the elastic state and said blocks consisting essentially of second material having a softening temperature exceeding said first temperature range; b. adjusting the temperature in said plate to provide in at least a first portion of the plate thickness a temperature differential extending along a perpendicular to the plate faces and providing at the interior of said plate various planes that are substantially isothermal, and c. applying parallel forces of substantially the same value on the respective blocks, the direction of these forces successively changing from block to block.
Claim 16
Independent Claim
164 words
A method of simultaneously manufacturing a plurality of plates comprising curved channels, comprising the steps of: a. forming a stack containing alternately disposed blocks and plates having straight fibers, both ends of said stack being formed by respective ones of said blocks, said blocks being connected to respective plate surfaces by welded joints, said plates consisting essentially of first material that is at a first temperature range in a state between the viscous state and the elastic state and said blocks consisting essentially of second material having a softening temperature exceeding said first temperature range; b. adjusting the temperature in said plate to provide in at least a first portion of the plate thickness a temperature differential extending along a perpendicular to the plate faces and providing at the interior of said plate various planes that are substantially isothermal, and c. applying parallel forces of substantially the same value on the respective blocks, the direction of these forces successively changing from block to block.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |