US4287067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water filter for radiators
Assignee: BERSTEIN
•
Filing: 1980-02-04
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Granted: 1981-09-01
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Expires: 2000-02-04
Abstract
Abstract A water filter for radiators is provided which is characterized by the fact that it is fitted with a thick internal cylindrical mesh inserted into another cylindrical mesh similar to the foregoing but with a finer mesh. Both meshes are fixed by supports placed by pressure between both means and a coupling flange.
Inventors
- 👤 Moises Dyner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:28
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/56; B01D29/58; B01D29/11; B01D29/117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
An automobile radiator water filter comprising: a generally cup-shaped external filter screen having a generally cylindrical sidewall and a generally hemispherical base wall and having a relatively fine mesh width and an open end; a generally cup-shaped internal filter screen having a generally cylindrical sidewall and a generally hemispherical base wall and having a relatively larger mesh width than that of said external filter screen, said internal filter being disposed within said external filter and having an open end; support means disposed between said screens for maintaining them in a fixed, spaced-apart relationship to one another, said support means including side supports disposed between the sidewalls of said screens and a base support disposed between the base walls of said screens; and a flat, annular coupling flange disposed across and joining together the open ends of said screens, said flange having an annular lip projecting laterally beyond the open end of said external screen which serves to mount said filter in a radiator inlet.
Claim 2
Dependent Claim
164 words
An automobile radiator water filter comprising: a generally cup-shaped external filter screen having a generally cylindrical sidewall and a generally hemispherical base wall and having a relatively fine mesh width and an open end; a generally cup-shaped internal filter screen having a generally cylindrical sidewall and a generally hemispherical base wall and having a relatively larger mesh width than that of said external filter screen, said internal filter being disposed within said external filter and having an open end; support means disposed between said screens for maintaining them in a fixed, spaced-apart relationship to one another, said support means including side supports disposed between the sidewalls of said screens and a base support disposed between the base walls of said screens; and a flat, annular coupling flange disposed across and joining together the open ends of said screens, said flange having an annular lip projecting laterally beyond the open end of said external screen which serves to mount said filter in a radiator inlet.
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) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |