Patent US4086314A successfully refreshed from Google Patents.
US3672009A
Expired / Lapsed
US
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Method of autoclaving building blocks
Assignee: STRUTHERS SCIENT AND INTERN CO
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Filing: 1970-10-20
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Granted: 1972-06-27
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Expires: 1990-10-20
Abstract
Abstract An indirectly heated autoclave for building blocks has a heating tank containing coils which are used for the indirect heating of water in the heating tank when the indirect heating capacity is not needed for the autoclave. This provides a source of heated water to shorten time between autoclaving cycles.
Inventors
- 👤 John W Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:00
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/24; B28B11/245; B01; B01J; B01J3/00; B01J3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
In apparatus for autoclaving concrete building blocks and like articles, the combination of a. at least one closed autoclave chamber for the introduction of blocks therein containing a reservoir for water, said reservoir containing coils; b. means supporting said blocks out of contact with liquid water within said at least one chamber; c. means heating a non-aqueous heat transfer fluid outside said at least one chamber; d. means transferring heated heat transfer fluid to said at least one chamber and through said coils in said reservoir to generate steam under pressure within said at least one chamber and to maintain heat within said chamber; e. a heating tank for water external to said at least one chamber; f. means within said heating tank for heating said water with said heat transfer fluid; g. means for conducting said heated water from said heating tank to said at least one chamber; and h. means exhausting steam from said at least one chamber at the end of an autoclave cycle.
Claim 2
Dependent Claim
167 words
In apparatus for autoclaving concrete building blocks and like articles, the combination of a. at least one closed autoclave chamber for the introduction of blocks therein containing a reservoir for water, said reservoir containing coils; b. means supporting said blocks out of contact with liquid water within said at least one chamber; c. means heating a non-aqueous heat transfer fluid outside said at least one chamber; d. means transferring heated heat transfer fluid to said at least one chamber and through said coils in said reservoir to generate steam under pressure within said at least one chamber and to maintain heat within said chamber; e. a heating tank for water external to said at least one chamber; f. means within said heating tank for heating said water with said heat transfer fluid; g. means for conducting said heated water from said heating tank to said at least one chamber; and h. means exhausting steam from said at least one chamber at the end of an autoclave cycle.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |