US3157718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sintering ceramic shapes
Assignee: Individual
•
Filing: 1962-11-14
•
Granted: 1964-11-17
•
Expires: 1982-11-14
Abstract
No abstract record available.
Inventors
- 👤 William J O'leary
- 👤 Eugene A Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/51; B; B22; B22F; B22F3/00; B22F3/10; C04B35/622; C04B35/64; G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; B22F2003/1042; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF MAINTAINING THE STAIGHTNESS AND ROUNDNESS DURING FIRING OF AN ELONGATED CIRCULAR SHAPE, COMPRISING PLACING IT WITHIN AN UPRIGHT TRUNCATED-VSHAPED TROUGH THEREBY SUPPORTING IT ALONG THE TWO STRAIGHT PARALLEL LINES WHERE THE CIRCUMFERENCE OF THE SHAPE RESTS AGAINST SIDES OF THE TROUGH, AND AS THE DIAMETER OF THE SHAPE DECREASES TO ITS MINIMUM DUE TO SHRINKAGE DURING THE FIRING, SUPPORTING IT FROM BELOW ALONG A THIRD STRAIGHT LINE PARALLEL WITH ITS AXIS FORMED BY CONTACT OF IT CIRCUMFERENCE WITH THE BOTTOM OF THE TROUGH; MEANWHILE PLACING ABOVE THE SHAPE AN INVERTED TRUNCATED-V-SHAPED TROUGH, THEREBY EXERTING DOWNWARDLY COMPRESSIVE FORCES ALONG THE TWO STRAIGHT PARALLEL LINE WHERE THE SIDES OF THE INVERTED TROUGH REST AGAINST THE CIRCUMFERENCE OF THE SHAPE, AND AS THE DIAMETER OF SAID SHAPE DECREASES TO ITS MINIMUM DUE TO SHRINKAGE DURING THE FIRING, SUPPORTING THE OUTER EDGES OF THE INVERTED V-SHAPED TROUGH ON THOSE OF THE UPRIGHT TROUGH, THEREBY ABATING THE DOWNWARDLY COMPRESSIVE FOCES EXERTED THEREBY.
Claim 2
Independent Claim
160 words
A METHOD OF MAINTAINING THE STAIGHTNESS AND ROUNDNESS DURING FIRING OF AN ELONGATED CIRCULAR SHAPE, COMPRISING PLACING IT WITHIN AN UPRIGHT TRUNCATED-VSHAPED TROUGH THEREBY SUPPORTING IT ALONG THE TWO STRAIGHT PARALLEL LINES WHERE THE CIRCUMFERENCE OF THE SHAPE RESTS AGAINST SIDES OF THE TROUGH, AND AS THE DIAMETER OF THE SHAPE DECREASES TO ITS MINIMUM DUE TO SHRINKAGE DURING THE FIRING, SUPPORTING IT FROM BELOW ALONG A THIRD STRAIGHT LINE PARALLEL WITH ITS AXIS FORMED BY CONTACT OF IT CIRCUMFERENCE WITH THE BOTTOM OF THE TROUGH; MEANWHILE PLACING ABOVE THE SHAPE AN INVERTED TRUNCATED-V-SHAPED TROUGH, THEREBY EXERTING DOWNWARDLY COMPRESSIVE FORCES ALONG THE TWO STRAIGHT PARALLEL LINE WHERE THE SIDES OF THE INVERTED TROUGH REST AGAINST THE CIRCUMFERENCE OF THE SHAPE, AND AS THE DIAMETER OF SAID SHAPE DECREASES TO ITS MINIMUM DUE TO SHRINKAGE DURING THE FIRING, SUPPORTING THE OUTER EDGES OF THE INVERTED V-SHAPED TROUGH ON THOSE OF THE UPRIGHT TROUGH, THEREBY ABATING THE DOWNWARDLY COMPRESSIVE FOCES EXERTED THEREBY.
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |