US3904352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly and method for supporting ceramics and the like during firing
Assignee: Coors Porcelain Co
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Filing: 1974-01-17
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Granted: 1975-09-09
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Expires: 1994-01-17
Abstract
Abstract In accordance with the invention a ceramic article is supported, during firing, by rollable bodies of high heat resistant material so that as shrinkage occurs in the ceramic article during firing there is no frictional drag between the article and its support.
Inventors
- 👤 Hans Thurnauer
- 👤 Lawrence E Coubrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:05
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/2469; B; B65; B65G; B65G7/00; B65G7/02; B65G7/04; C; C04; C04B; C04B35/00; C04B35/622; C04B35/64; Y; Y02; Y02P; Y02P40/00; Y02P40/60
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
93 words
A setter assembly for supporting, during firing, an article of sinterable powder material which shrinks during the firing, said setter assembly comprising a plurality of spaced refractory plates each having an upper surface for supporting said article during the firing, and at least one refractory rollable element bonded to the bottom surface of each of the plates by a bonding material which is destroyed at a temperature below that at which shrinkage commences in the article being fired whereby when said shrinkage commences said plates cease to be bonded to said rollable elements.
Claim 2
Dependent Claim
93 words
A setter assembly for supporting, during firing, an article of sinterable powder material which shrinks during the firing, said setter assembly comprising a plurality of spaced refractory plates each having an upper surface for supporting said article during the firing, and at least one refractory rollable element bonded to the bottom surface of each of the plates by a bonding material which is destroyed at a temperature below that at which shrinkage commences in the article being fired whereby when said shrinkage commences said plates cease to be bonded to said rollable elements.
Claim 3
Dependent Claim
61 words
A setter assembly as set forth in claim 1 wherein the refractory plates are held together by a bonding material which is destroyed at a temperature below that at which shrinkage commences in the article being fired whereby when said shrinkage commences said plates are no longer bonded to each other and are thereby free to move relative to each other.
Claim 4
Dependent Claim
30 words
A setter assembly as set forth in claim 1 wherein each of the refractory plates has at least three of the refractory rollable elements bonded to the bottom surface thereof.
Claim 5
Dependent Claim
15 words
A setter assembly as set forth in claim 1 wherein the rollable elements are spheres.
Claim 6
Dependent Claim
21 words
A setter assembly as set forth in claim 4 wherein the spheres have a diameter no greater than about 1/4 inch.
Claim 7
Dependent Claim
25 words
A setter assembly as set forth in claim 1 wherein the refractory plates have deposited thereon refractory powder against which the article being fired rests.
Claim 8
Dependent Claim
61 words
A setter assembly for supporting, during firing, an article of sinterable powder material which shrinks during the firing, said setter assembly comprising a refractory support surface, a plurality of laterally spaced refractory plates each having an upper surface for supporting the article to be fired, and at least one refractory rollable element between each of said plates and said support surface.
Claim 9
Dependent Claim
61 words
A setter assembly for supporting, during firing, an article of sinterable powder material which shrinks during the firing, said setter assembly comprising a refractory support surface, a plurality of laterally spaced refractory plates each having an upper surface for supporting the article to be fired, and at least one refractory rollable element between each of said plates and said support surface.
Claim 10
Dependent Claim
56 words
A setter assembly as set forth in claim 7 wherein the rollable elements are bonded to the support surface by a bonding material which is destroyed at a temperature below that at which shrinkage commences in the article being fired whereby when said shrinkage commences said rollable elements cease to be bonded to said support surface.
Claim 11
Dependent Claim
60 words
A setter assembly as set forth in claim 7 wherein the plates are held together by a bonding material which is destroyed at a temperature below that at which shrinkage commences in the article being fired whereby when said shrinkage commences said plates are no longer bonded to each other and are thereby free to move relative to each other.
Claim 12
Dependent Claim
15 words
A setter assembly as set forth in claim 7 wherein the rollable elements are spheres.
Claim 13
Dependent Claim
21 words
A setter assembly as set forth in claim 10 wherein the spheres have a diameter of less than about one-quarter inch.
Claim 14
Dependent Claim
20 words
A setter assembly as set forth in claim 10 wherein the spheres are in equally spaced relationship with each other.
Claim 15
Dependent Claim
23 words
A setter assembly as set forth in claim 10 wherein each of the plates is supported by at least three of the spheres.
Claim 16
Dependent Claim
41 words
A setter assembly as set forth in claim 7 wherein the support surface is a shallow concave depression whereby after said bonding material is destroyed the rollable elements are induced by gravity to roll toward the center of the support surface.
Claim 17
Independent Claim
83 words
A method for firing an article of sinterable powder material which shrinks during firing comprising supporting the article on a plurality of spaced refractory plates which are supported by refractory rollable elements which are in contact with a refractory support surface and which are permitted to roll with respect to the support surface during the firing, and firing the article while so supported whereby during the shrinkage of the article which occurs during the firing said rollable elements roll on said support surface.
Claim 18
Independent Claim
83 words
A method for firing an article of sinterable powder material which shrinks during firing comprising supporting the article on a plurality of spaced refractory plates which are supported by refractory rollable elements which are in contact with a refractory support surface and which are permitted to roll with respect to the support surface during the firing, and firing the article while so supported whereby during the shrinkage of the article which occurs during the firing said rollable elements roll on said support surface.
Claim 19
Dependent Claim
14 words
A method as set forth in claim 15 wherein The rollable elements are spheres.
Claim 20
Dependent Claim
53 words
A method as set forth in claim 15 wherein the rollable elements are bonded to the support surface by a bonding material which is destroyed at a temperature below that at which shrinkage of the article commences whereby when the shrinkage commences said rollable elements cease to be bonded to said support surface.
Claim 21
Dependent Claim
48 words
A method as set forth in claim 15 wherein said rollable elements are bonded to said plates by a bonding material which is destroyed at a temperature below that at which shrinkage commences whereby when the shrinkage commences the plates cease to be bonded to said rollable elements.
Claim 22
Dependent Claim
30 words
A method as set forth in claim 15 wherein each of the plates has deposited on the upper surface thereof a refractory powder against which the article being fired rests.
Claim 23
Dependent Claim
32 words
A method as set forth in claim 15 wherein the support surface is shaped to induce, by force of gravity, the rollable elements to roll toward the center of the support surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |