Patent US3076550A successfully refreshed from Google Patents.
US3076550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throwaway liquid filter
Assignee: Purolator Products Inc
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Filing: 1959-08-24
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Granted: 1963-02-05
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Expires: 1979-08-24
Abstract
No abstract record available.
Inventors
- 👤 John R Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:50
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/08; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
224 words
A FILTER COMPRISING AN OPEN END CYLINDRICAL FILTER SHELL, AN OPEN END CUP SHAPED HEAD HAVING A HORIZONTAL LIP ADJACENT ITS OPEN END, LATERALLY DISPOSED THREADED BOSSES IN THE OPPOSITE SIDES OF SAID HEAD PROVIDING AN INLET AND OUTLET FOR PASSING FUEL TO BE FILTERED THERETHROUGH, A CYLINDRICAL OPEN END CASING IN SAID HEAD HAVING AN OUTWARDLY INCLINED PORTION ADJACENT ITS OPEN END TERMINATING IN A HORIZONTAL LIP SECURED TO SAID HEAD LIP, THE TOP OF SAID CASING BEING SPACED FROM THE CLOSED END OF SAID HEAD, A FLAT PORTION PROVIDED IN THE SIDE OF SAID CASING OPPOSITE SAID OUTLET AND SPACED THEREFROM TO DEFINE AN OUTLET CHAMBER WITH SAID SPACED CLOSED ENDS, SAID CASING HAVING AN OPENING IN THE SIDE THEREOF OPPOSITE SAID OUTLET, SAID INLET BOSS EXTENDING THROUGH SAID OPENING AND SECURED TO THE CASING AROUND SAID OPENING, A CENTER TUBE EXTENDING THROUGH THE CASING AND SECURED TO THE TOP THEREOF, SAID TUBE EXTENDING BELOW THE OPEN ENDS OF SAID CASING AND HEAD, AN INTERNALLY THREADED CYLINDRICAL ADAPTER MEMBER DISPOSED IN SAID CASING SPACED FROM THE INNER SURFACE THEREOF, THE LOWER END OF SAID MEMBER BEING PROVIDED WITH AN OUTWARDLY INCLINED PORTION ABUTTING SAID OUTWARDLY INCLINED CASING PORTION AND TERMINATING IN A HORIZONTAL LIP SECURED TO SAID CASING LIP, SAID MEMBER HAVING A CENTRAL OPENING IN THE TOP THEREOF THROUGH WHICH SAID
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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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |