US3353236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing acoustical tile
Assignee: US Perlite Corp
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Filing: 1965-02-10
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Granted: 1967-11-21
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Expires: 1985-02-10
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth K Stedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:28
CPC Classifications
B; B28; B28B; B28B23/00; B28B1/00; B28B1/52; B28B15/00; B28B15/005; B28B3/00; B28B5/00; B28B5/02; B28B5/021; B28B5/022; C; C04; C04B; C04B20/00; C04B20/10; C04B20/12; C04B28/00; C04B28/24; C04B28/26; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B1/84; E04B1/86; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; E04C2/18; E04B2001/8245; E04B2001/8457; E04B2001/8476; E04B2001/848; E04B2001/849; Y; Y10; Y10S; Y10S425/00; Y10S425/116; Y10S425/20; Y10S425/201
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
170 words
IN APPARATUS OF THE KIND DESCRIBED, AT LEAST A PAIR OF MIXERS RESPECTIVELY FOR MIXING INGREDIENTS IN TWO STAGES, TIMERS FOR PERIODICALLY OPERATING THE MIXING ELEMETS IN THE MIXERS, SAID MIXERS BEING SO POSITIONED THAT THE MATERIAL FIRST MIXED IN THE ONE MIXER WILL BE DISCHARGED BY GRAVITY INTO THE OTHER MIXER, A MOLD FILLING STATION, CONVEYOR MEANS TO CONVEY MATERIAL DISCHARGED FROM SAID OTHER MIXER TO SAID MOLD FILLING STATION, OTHER CONVEYOR MEANS TO CONVEY INDIVIDUAL MOLD TRAYS PAST SAID FILLING STATION WHEREAT SAID INDIVIDUAL MOLD TRAYS PAST SAID FILLING STAWITH SAID MATERIAL, SAID OTHER CONVEYOR MEANS EXTENDING TO A MOLD PRESSER STATION WHEREAT A RAM IS AFFORDED TO PRESS AND COMPACT THE MATERIAL DEPOSITED IN SAID MOLDS, SAID CONVEYOR EXTENDING TO STRIPPER STATION WHEREAT THE COMPACTED MATERIAL IS TO BE REMOVED FROM SAID MOLD TRAYS, AND MEANS AFFORDING PATH OF TRAVEL ADJACENT SAID STRIPPER STATION AND LEADING TO AN OVER AND ALONG WHICH THE COMPACTED MATERIAL REMOVED FROM THE MOLD TRAYS IS TO BE MOVED INTO THE OVEN.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |