Patent US3170872A successfully refreshed from Google Patents.
US3170872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic block filter drier
Assignee: Parker Hannifin Corp
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Filing: 1962-08-03
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Granted: 1965-02-23
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Expires: 1982-08-03
Abstract
No abstract record available.
Inventors
- 👤 Balogh Stephen
- 👤 Ronald M Wilber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/003; B01D29/00; B01D29/11; B01D29/31; B01D29/33; B01D35/00; B01D35/02; B01D2201/00; B01D2201/02; Y; Y10; Y10S; Y10S210/00; Y10S210/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING: AN ELONGATED HOLLOW BODY OF RIGID POROUS CERAMIC MATERIAL HAVING A CLOSED END AND AN OPEN END, A QUANTITY OF DESICCANT MATERIAL IN SAID BODY, A JACKET SURROUNDING AND SPACED FROM SAID BODY AND HAVING INWARDLY REDUCED END PORTIONS FORMING SHOULDERS THEREWITH, AN INLET FITTING IN THAT END PORTION OF SAID JACKET ADJACENT THE CLOSED END OF SAID BODY, AN OUTLET FITTING AT THE OTHER END PORTION OF SAID JACKET, A COMPRESSION SPRING INTERPOSED BETWEEN THE CLOSED END OF SAID BDY AND THE ADJACENT REDUCED PORTION OF SAID JACKET, AN INTEGRALLY FORMED OUTWARDLY EXTENDING ANNULAR FLANGE AT THE OPEN END PORTION OF SAID BODY, A PERFORATED METALLIC AP HAVING A FLANGE OVERLYING THE FLANGE OF SAID BODY AND ACTING TO CONTAIN SAID DESICCANT MATERIAL WITHIN SAID BODY, AND A FINE WOVEN TRAINER DISC GRIPPED MARGINALLY BETWEEN SAID CAP AND THE ADJACENT REDUCED END PORTION OF SAID JACKET, SAID BODY FLANGE BE-
Claim 2
Independent Claim
158 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING: AN ELONGATED HOLLOW BODY OF RIGID POROUS CERAMIC MATERIAL HAVING A CLOSED END AND AN OPEN END, A QUANTITY OF DESICCANT MATERIAL IN SAID BODY, A JACKET SURROUNDING AND SPACED FROM SAID BODY AND HAVING INWARDLY REDUCED END PORTIONS FORMING SHOULDERS THEREWITH, AN INLET FITTING IN THAT END PORTION OF SAID JACKET ADJACENT THE CLOSED END OF SAID BODY, AN OUTLET FITTING AT THE OTHER END PORTION OF SAID JACKET, A COMPRESSION SPRING INTERPOSED BETWEEN THE CLOSED END OF SAID BDY AND THE ADJACENT REDUCED PORTION OF SAID JACKET, AN INTEGRALLY FORMED OUTWARDLY EXTENDING ANNULAR FLANGE AT THE OPEN END PORTION OF SAID BODY, A PERFORATED METALLIC AP HAVING A FLANGE OVERLYING THE FLANGE OF SAID BODY AND ACTING TO CONTAIN SAID DESICCANT MATERIAL WITHIN SAID BODY, AND A FINE WOVEN TRAINER DISC GRIPPED MARGINALLY BETWEEN SAID CAP AND THE ADJACENT REDUCED END PORTION OF SAID JACKET, SAID BODY FLANGE BE-
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |