US3738797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kiln chain hanger
Assignee: Esco Corp
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Filing: 1972-03-01
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Granted: 1973-06-12
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Expires: 1992-03-01
Abstract
Abstract A kiln chain hanger for supporting kiln chains along a helical path in a rotary kiln. The hanger includes a generally planar base portion adapted to be secured to the wall of the rotary kiln and a shackle portion adapted to support one or more chainsupporting shackles. The shackle portion includes a generally planar attaching lug for each shackle which extends angularly with respect to the base portion and connecting portions which extend between adjacent lugs. An opening for a shackle pin is provided through each lug, the axis of the opening extending perpendicularly to the plane of the lug. The base is adapted to be secured to the rotary kiln along the helical path, and the angle between the axis of each shackle pin opening and the base is such that the axis extends perpendicularly to the direction of the force exerted by the hanging chain. If the hanger is to be used in a curtain hung system, the axis of each pin opening, and therefore the shackle pin, will extend parallel to the axis of the rotary kiln. If the hanger is to be used in a garland hung system, the axis of each opening will extend angularly with respect to the kiln axis and perpendicular to the direction of the chain pull.
Inventors
- 👤 G Robinson
- 👤 F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:02
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/14; F27B7/18; Y; Y10; Y10S; Y10S366/00; Y10S366/607
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A kiln chain hanger for supporting a kiln chain in a rotary kiln, the hanger having a base portion adapted to be secured to the rotary kiln and a shackle portion extending from the base portion and having a pair of spaced-apart generally planar parallel surfaces extending angularly with respect to the base portion, the shackle portion having an opening extending perpendicularly through the planar surfaces whereby when the base portion is secured to the rotary kiln along a helical path a shackle pin extending through the opening will extend generally perpendicularly to the force exerted by the weight of the chain.
Claim 2
Dependent Claim
102 words
A kiln chain hanger for supporting a kiln chain in a rotary kiln, the hanger having a base portion adapted to be secured to the rotary kiln and a shackle portion extending from the base portion and having a pair of spaced-apart generally planar parallel surfaces extending angularly with respect to the base portion, the shackle portion having an opening extending perpendicularly through the planar surfaces whereby when the base portion is secured to the rotary kiln along a helical path a shackle pin extending through the opening will extend generally perpendicularly to the force exerted by the weight of the chain.
Claim 3
Dependent Claim
76 words
The structure of claim 1 in which the shackle portion is provided with a second pair of spaced-apart generally planar surfaces which extend parallel to the first-mentioned planar surfaces, the second pair of planar surfaces having an opening extending perpendicularly therethrough, the two pairs of planar surfaces being offset from each other in the direction of the axes of the openings and being joined by a connecting portion extending angularly with respect to the base portion.
Claim 4
Dependent Claim
25 words
The structure of claim 2 in which the base portion is generally planar and the openings lie along the median line of the base portion.
Claim 5
Dependent Claim
40 words
The structure of claim 1 in which the base portion is generally planar and the angle between the planar surfaces and the base portion is complementary to the angle between the helical path and the axis of the rotary kiln.
Claim 6
Dependent Claim
242 words
In a curtain hung rotary kiln assembly having an elongated generally cylindrical rotary kiln rotatable about the central longitudinal axis thereof and a plurality of kiln chains secured to the wall of the kiln along a generally helical path, an improved kiln chain hanger comprising a base portion secured to the wall of the kiln and a shackle portion extending from the base portion and having a plurality of pairs of spaced-apart parallel planar surfaces, the planar surfaces of each pair extending generally perpendicularly to the axis of the rotary kiln, the shackle portion being provided with an opening extending through each pair of planar surfaces, tHe axis of each opening extending generally parallel to the axis of the rotary kiln, a shackle pin extending through each opening, a bifurcated shackle for each opening having a pair of spaced-apart attaching ends and a looped chain-supporting end, the attaching ends of each shackle straddling one of the pairs of planar surfaces and being rotatably supported by one of the shackle pins, the chain-supporting end of each shackle supporting a kiln chain, the pairs of planar surfaces being offset in a direction parallel to the axis of the kiln so that each opening lies generally along the helical path whereby the kiln chain supported by the hanger hangs freely downwardly when the hanger is positioned at the top of the kiln and may rotate freely with respect to the hanger as the kiln rotates.
Claim 7
Dependent Claim
242 words
In a curtain hung rotary kiln assembly having an elongated generally cylindrical rotary kiln rotatable about the central longitudinal axis thereof and a plurality of kiln chains secured to the wall of the kiln along a generally helical path, an improved kiln chain hanger comprising a base portion secured to the wall of the kiln and a shackle portion extending from the base portion and having a plurality of pairs of spaced-apart parallel planar surfaces, the planar surfaces of each pair extending generally perpendicularly to the axis of the rotary kiln, the shackle portion being provided with an opening extending through each pair of planar surfaces, tHe axis of each opening extending generally parallel to the axis of the rotary kiln, a shackle pin extending through each opening, a bifurcated shackle for each opening having a pair of spaced-apart attaching ends and a looped chain-supporting end, the attaching ends of each shackle straddling one of the pairs of planar surfaces and being rotatably supported by one of the shackle pins, the chain-supporting end of each shackle supporting a kiln chain, the pairs of planar surfaces being offset in a direction parallel to the axis of the kiln so that each opening lies generally along the helical path whereby the kiln chain supported by the hanger hangs freely downwardly when the hanger is positioned at the top of the kiln and may rotate freely with respect to the hanger as the kiln rotates.
Claim 8
Dependent Claim
34 words
The structure of claim 5 in which the base portion is generally planar and extends generally along the helical path, the shackle portion including a connecting portion extending between adjacent pairs of planar surfaces.
Claim 9
Dependent Claim
197 words
In a garland hung rotary kiln assembly having an elongated generally cylindrical rotary kiln rotatable about the central longitudinal axis thereof and a plurality of kiln chains, each chain having each end thereof secured to the wall of the kiln at spaced points along a generally helical path, an improved kiln chain hanger comprising a base portion secured to the wall of the kiln and a shackle portion extending from the base portion and having a plurality of pairs of spaced-apart parallel planar surfaces, each pair of planar surfaces having an opening extending perpendicularly therethrough, a shackle pin extending through each opening, a bifurcated shackle for each opening having a pair of spaced-apart attaching ends and a looped chain-supporting end, the attaching ends of each shackle straddling one of the pairs of planar surfaces and being rotatably supported by one of the shackle pins, the chain-supporting end of each shackle supporting one end of a kiln chain, the planar surfaces of each pair extending generally parallel to the direction of the force exerted by the chain supported by the associated shackle pin whereby the shackles may rotate freely with respect to the hanger as the kiln rotates.
Claim 10
Dependent Claim
197 words
In a garland hung rotary kiln assembly having an elongated generally cylindrical rotary kiln rotatable about the central longitudinal axis thereof and a plurality of kiln chains, each chain having each end thereof secured to the wall of the kiln at spaced points along a generally helical path, an improved kiln chain hanger comprising a base portion secured to the wall of the kiln and a shackle portion extending from the base portion and having a plurality of pairs of spaced-apart parallel planar surfaces, each pair of planar surfaces having an opening extending perpendicularly therethrough, a shackle pin extending through each opening, a bifurcated shackle for each opening having a pair of spaced-apart attaching ends and a looped chain-supporting end, the attaching ends of each shackle straddling one of the pairs of planar surfaces and being rotatably supported by one of the shackle pins, the chain-supporting end of each shackle supporting one end of a kiln chain, the planar surfaces of each pair extending generally parallel to the direction of the force exerted by the chain supported by the associated shackle pin whereby the shackles may rotate freely with respect to the hanger as the kiln rotates.
Claim 11
Dependent Claim
34 words
The structure of claim 7 in which the base portion is generally planar and extends generally along the helical path, the shackle portion including a connecting portion extending between adjacent pairs of planar surfaces.
Claim 12
Dependent Claim
24 words
The structure of claim 7 in which the base portion is generally planar and the openings lie along the midplane of the base portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |