US3093583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filters and processes for manufacturing the same
Assignee: Robert Bosch GmbH
•
Filing: 1958-10-14
•
Granted: 1963-06-11
•
Expires: 1978-10-14
Abstract
No abstract record available.
Inventors
- 👤 Stoll Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:29
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21; B01D29/216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A FILTER BODY COMPRISING A TUBULAR WINDING OF THERMOPLASTIC CRINKLED FILAMENTARY MATERIAL HAVING WINDINGS PROVIDED WITH CRINKLES WHICH ENGAGE EACH OTHER AT A PLURALITY OF PLACES WHILE AT THE SAME TIME DEFINING SMALL HAPHAZARD PASSAGES THROUGH THE WALL OF THE TUBULAR FILTER BODY, SAID CRINKLES COHERING AT SAID PLACES WHERE THEY ENGAGE EACH OTHER; AND A PAIR OF ANNULAR CLOSURE MEANS RESPECTIVELY LOCATED AT THE ENDS OF SAID TUBULAR WINDING AND CLOSING THE WALL THEREOF AT THE ENDS OF SAID WALL SO THAT THE MEDIUM WHICH IS FILTERED MUST FLOW SUBSTANTIALLY RADIALLY THROUGH SAID PASSAGES OF THE WALL OF SAID BODY.
Claim 2
Dependent Claim
101 words
A FILTER BODY COMPRISING A TUBULAR WINDING OF THERMOPLASTIC CRINKLED FILAMENTARY MATERIAL HAVING WINDINGS PROVIDED WITH CRINKLES WHICH ENGAGE EACH OTHER AT A PLURALITY OF PLACES WHILE AT THE SAME TIME DEFINING SMALL HAPHAZARD PASSAGES THROUGH THE WALL OF THE TUBULAR FILTER BODY, SAID CRINKLES COHERING AT SAID PLACES WHERE THEY ENGAGE EACH OTHER; AND A PAIR OF ANNULAR CLOSURE MEANS RESPECTIVELY LOCATED AT THE ENDS OF SAID TUBULAR WINDING AND CLOSING THE WALL THEREOF AT THE ENDS OF SAID WALL SO THAT THE MEDIUM WHICH IS FILTERED MUST FLOW SUBSTANTIALLY RADIALLY THROUGH SAID PASSAGES OF THE WALL OF SAID BODY.
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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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |