US3759661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kiln cars
Assignee: Steetley Engineering Ltd
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Filing: 1972-01-20
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Granted: 1973-09-18
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Expires: 1992-01-20
Abstract
Abstract A low thermal mass kiln car having a wheeled base on which is superposed a thermal barrier means composed of layers of lightweight non-load-bearing thermally insulating material, and a plurality of posts supported from the base of the kiln car and projecting upwardly through the thermal barrier means, the posts being supported with lateral stability by sockets on the base and carrying an upper deck for supporting the ware.
Inventors
- 👤 N Barsby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:55
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/12; F27D3/123; C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C09; C09K; C09K15/00; C09K15/04; C09K15/16; C09K15/18; C10; C10M; C10M3/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
94 words
In a kiln car comprising a base having wheels for running on a kiln track, a car top superposed on the base, a non-load bearing thermal barrier means overlying the base, upright supports extending through said thermal barrier means, and an upper ware supporting deck carried by said supports, the improvement wherein: a. the supports comprise thin-walled support elements of nonmetallic material; b. receiving elements for the support elements are disposed at least predominantly below, and thermally protected by said thermal barrier means; and c. the support elements interfit vertically with the receiving elements.
Claim 2
Dependent Claim
94 words
In a kiln car comprising a base having wheels for running on a kiln track, a car top superposed on the base, a non-load bearing thermal barrier means overlying the base, upright supports extending through said thermal barrier means, and an upper ware supporting deck carried by said supports, the improvement wherein: a. the supports comprise thin-walled support elements of nonmetallic material; b. receiving elements for the support elements are disposed at least predominantly below, and thermally protected by said thermal barrier means; and c. the support elements interfit vertically with the receiving elements.
Claim 3
Dependent Claim
18 words
A kiln car according to claim 1, wherein said support elements releasably interfit with the corresponding receiving elements.
Claim 4
Dependent Claim
44 words
A kiln car according to claim 2, wherein said receiving elements comprise sockets and the support elements comprise hollow posts, and wherein the lower ends of the posts are loosely interfitted with said sockets to minimise heat transference between the posts and the sockets.
Claim 5
Dependent Claim
31 words
A kiln car according to claim 3 wherein said thermal barrier means rests on metal plates extending between and resting on or connected to said sockets adjacent to their upper ends.
Claim 6
Dependent Claim
31 words
A kiln car according to claim 4 wherein said base comprises superposed sets of spaced parallel beams, at least one set thereof extending between and connecting said sockets with each other.
Claim 7
Dependent Claim
70 words
A kiln car according to claim 1 wherein at each end said car top incorporates: a. non-metallic refractory elements having end faces of complementary stepped profile in vertical longitudinal cross-section. b. abutment members adapted to engage the corresponding abutment members on an adjacent car to maintain separation between complementary ones of said end faces on adjacent cars respectively and hence maintain a passageway of stepped profile between said adjacent cars.
Claim 8
Dependent Claim
50 words
A kiln car according to claim 1 wherein said barrier means is composed at its upper and lateral boundaries of relatively dense plate like elements providing protection against and able to withstand environmental conditions at these localities in the kiln and an interior composed of less dense heat insulating material.
Claim 9
Dependent Claim
37 words
A kiln car according to claim 1 wherein the mass per unit area in plan of a main central portion of said thermal barrier means excluding peripherally extending elements thereof does not substantially exceed 0.010 Kg/sq. centimetre.
Claim 10
Dependent Claim
69 words
A kiln car according to claim 1 wherein each support element is a hollow post the dimensions of which are such that the ratio of its transverse cross-sectional area relative to its circumscribed area is between 0.3 and 0.8, to reduce conductive transmission of the heat to said base of said kiln car to an acceptably low level while providing the required mechanical strength to support the ware load.
Claim 11
Dependent Claim
27 words
A kiln car according to claim 9 wherein said barrier means is composed of a material which is shape holding around apertures through which said posts extend.
Claim 12
Dependent Claim
23 words
A kiln car according to claim 1, wherein the thermal barrier means includes an upper plate-like layer which is resistant to flame impingement.
Claim 13
Dependent Claim
15 words
A kiln car according to claim 11, wherein the thermal barrier means includes ceramic supports.
Claim 14
Dependent Claim
35 words
A kiln car according to claim 1, wherein the support elements comprise hollow posts, including sleeves provided on said posts and arranged to surround apertures in the thermal barrier means through which said posts extend.
Claim 15
Dependent Claim
21 words
A kiln car according to claim 1, wherein the thermal barrier means comprises a plurality of layers of thermal insulation material.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |