US4243385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End block
Assignee: Resco Products Inc
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Filing: 1979-02-26
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Granted: 1981-01-06
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Expires: 1999-02-26
Abstract
Abstract An end block adapted for use on a kiln car includes a refractory body having a transverse projection at a front end and a transverse recess at a rear end. The recess is dimensioned to receive therewithin a projection on the front end of another block with a loose fit therebetween. A sealing layer of resilient refractory material may be disposed within the recess for contact with the front end projection of another block.
Inventors
- 👤 Ernest H. Jeffries, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:52
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/04; F27D3/00; F27D3/12; F27D3/123; F27D99/00; F27D99/0073
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
207 words
Apparatus comprising a kiln car, a row of end blocks aligned adjacent an end of said car, each of said end blocks comprising a refractory body having a horizontal transverse recess extending into a face of said block adjacent said end of said car, said recess having a shape wherein the innermost surface of said recess has a vertical dimension greater than the vertical dimension of any other portion of said recess, said row being formed of blocks wherein said recess of each block is aligned with said recess of each adjacent block, and a layer of resilient refactory material retained in said recesses of said blocks without the use of fastening means by retaining means comprising said shape of said recess, said refractory material having a length sufficient to be threaded through all of said recesses, and further comprising one other row of end blocks aligned adjacent an opposite end of said car, each of said end blocks of said other row comprising a refractory body having a horizontally transverse projection extending from an end face adjacent said opposite end of said car and vertically aligned with said recess, the smallest vertical dimension of said recess being greater than the largest vertical dimension of said projection.
Claim 2
Dependent Claim
207 words
Apparatus comprising a kiln car, a row of end blocks aligned adjacent an end of said car, each of said end blocks comprising a refractory body having a horizontal transverse recess extending into a face of said block adjacent said end of said car, said recess having a shape wherein the innermost surface of said recess has a vertical dimension greater than the vertical dimension of any other portion of said recess, said row being formed of blocks wherein said recess of each block is aligned with said recess of each adjacent block, and a layer of resilient refactory material retained in said recesses of said blocks without the use of fastening means by retaining means comprising said shape of said recess, said refractory material having a length sufficient to be threaded through all of said recesses, and further comprising one other row of end blocks aligned adjacent an opposite end of said car, each of said end blocks of said other row comprising a refractory body having a horizontally transverse projection extending from an end face adjacent said opposite end of said car and vertically aligned with said recess, the smallest vertical dimension of said recess being greater than the largest vertical dimension of said projection.
Claim 3
Dependent Claim
63 words
Apparatus in accordance with claim 1 wherein each block also includes a horizontally transverse projection extending from the face of said block opposite said face containing said recess, the smallest vertical dimension of said recess being greater than the largest vertical dimension of said projection so that a corresponding projection on another block can enter a vertically aligned recess with a loose fit.
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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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |