Patent US4128408A successfully refreshed from Google Patents.
US4128408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter for motor vehicle carburetor
Assignee: Individual
•
Filing: 1977-05-09
•
Granted: 1978-12-05
•
Expires: 1997-05-09
Abstract
Abstract An air filter for a motor vehicle carburetor includes a filter body having a pair of rings spaced apart in an axial direction by spacers which occupy a relatively small proportion of the space between the rings. An annular filter cloth surrounds the space between the rings and has edges overlapping the radially outer edges of the rings in a radially inward direction to retain the filter cloth thereon. The edges of the filter cloth are resilient to enable the filter cloth to be readily assembled with and removed from the filter body, and the filter cloth having a weave which prevents passage of undesirable solid matter therethrough without unduly restricting air flow.
Inventors
- 👤 Walter D. Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:48
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2411; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
An air filter for a motor vehicle carburetor including a filter body comprising a pair of rings spaced apart in an axial direction by spacing means between said rings and occupying a relatively small proportion of the space between the rings, said rings having flat axially opposed surfaces, and an annular filter cloth surrounding the space between the rings and having edges overlapping the radially outer edges of the rings in a radially inward direction to engage the outer flat surfaces of the rings and retain the filter cloth in assembly with the filter body, the edges of the filter cloth being resilient to enable the filter cloth to be readily assembled with and removed from the filter body, and the filter cloth having a weave which prevents passage of undesirable solid matter therethrough without unduly restricting air flow.
Claim 2
Dependent Claim
139 words
An air filter for a motor vehicle carburetor including a filter body comprising a pair of rings spaced apart in an axial direction by spacing means between said rings and occupying a relatively small proportion of the space between the rings, said rings having flat axially opposed surfaces, and an annular filter cloth surrounding the space between the rings and having edges overlapping the radially outer edges of the rings in a radially inward direction to engage the outer flat surfaces of the rings and retain the filter cloth in assembly with the filter body, the edges of the filter cloth being resilient to enable the filter cloth to be readily assembled with and removed from the filter body, and the filter cloth having a weave which prevents passage of undesirable solid matter therethrough without unduly restricting air flow.
Claim 3
Dependent Claim
45 words
A filter according to claim 1 wherein the filter cloth has folded-over edges providing pockets, each pocket containing a length of elastic material to render the respective edge resilient, each resilient edge engaging the outer flat surface of the respective ring of the filter body.
Claim 4
Dependent Claim
19 words
An air filter according to claim 1 wherein the spacing means comprises a series of circumferentially spaced apart struts.
Claim 5
Dependent Claim
15 words
An air filter according to claim 3 wherein the struts have radially oriented flat sides.
References Cited (Backward Citations)
US2555742A
Cited
US3208202A
Cited
US3290870A
Cited
FR1387618A
Cited
US3406502A
Cited
US3633757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |