US3589694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting plate for objects to be subjected to a thermal treatment
Assignee: US Philips Corp
•
Filing: 1969-08-19
•
Granted: 1971-06-29
•
Expires: 1989-08-19
Abstract
Abstract A supporting plate for objects to be subjected to a thermal treatment in a furnace, said plate being formed by substantially parallel thin supporting tubes or bars of ceramic material interconnected by transverse connecting elements.
Inventors
- 👤 Henderikus Gelling
- 👤 Wilhelmus Henricus Meulendijks
- 👤 Theodorus Gerhardus Stijntjes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:26
CPC Classifications
F; F27; F27D; F27D5/00; F27D3/00; F27D3/12; F27D2003/124
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
80 words
A supporting plate for supporting thereon objects to be subjected to heat treatment comprising a plurality of thin tubes spaced-apart in parallel relationship the upper surface thereof forming the supporting surface, a plurality of transverse connecting elements secured to each of said thin tubes by means of a heat resistant cement thereby interconnecting said parallel spaced thin supporting tubes to form a rigidly constructed supporting plate capable of withstanding temperature variations and usable in temperatures up to at least 1,400*C.
Claim 2
Dependent Claim
80 words
A supporting plate for supporting thereon objects to be subjected to heat treatment comprising a plurality of thin tubes spaced-apart in parallel relationship the upper surface thereof forming the supporting surface, a plurality of transverse connecting elements secured to each of said thin tubes by means of a heat resistant cement thereby interconnecting said parallel spaced thin supporting tubes to form a rigidly constructed supporting plate capable of withstanding temperature variations and usable in temperatures up to at least 1,400*C.
Claim 3
Dependent Claim
34 words
The supporting plate according to claim 1 wherein said transverse connecting elements comprises thin tubes of sintered material and are secured to the undersurface of said supporting tubes at at least two spaced-apart locations.
Claim 4
Dependent Claim
18 words
The supporting tube according to claim 2 wherein said heat-resistant cement comprises a mixture of silica and alumina.
Claim 5
Dependent Claim
18 words
The supporting plate according to claim 2 wherein said heat-resistant cement comprises a metallized paste formed of platinum.
Claim 6
Dependent Claim
25 words
The supporting plate according to claim 2 wherein each of said supporting tubes is attached to the supporting tube adjacent thereto by said heat-resistant cement.
Claim 7
Dependent Claim
28 words
The supporting plate according to claim 2 wherein said transverse connecting elements are secured to the undersurface of said supporting tubes and are spaced-apart at regular intervals thereacross.
Claim 8
Dependent Claim
32 words
The supporting plate according to claim 2 wherein said transverse connecting elements are secured to the undersurface of said supporting tubes and are located at the opposite ends of said supporting tubes.
Claim 9
Dependent Claim
45 words
The supporting plate according to claim 7 further comprising a support block of ceramic material secured to the undersurface of said transverse connecting elements by means of said heat-resistant cement so as to provide a means for stacking said supporting plates one on the other.
Claim 10
Dependent Claim
23 words
The supporting plate according to claim 1 wherein said supporting tubes are formed of a material containing at least 95 percent of Al2O3.
Claim 11
Dependent Claim
36 words
The supporting plate according to claim 1 wherein saId transverse connecting elements comprise beams of ceramic material have a single elongated slot extending longitudinally therethrough for receiving all of said supporting tubes in said single slot.
Claim 12
Dependent Claim
42 words
The supporting plate according to claim 2 further comprising a plurality of supporting tubes secured together by said heat-resistant cement and stacked to form upright collars along the longitudinal sides of said supporting plate for supporting bulk objects to be heat treated.
Claim 13
Dependent Claim
23 words
The supporting plate according to claim 2 further comprising a layer of ceramic material coated over the supporting surface of said support tubes.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |