US3828529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for filtering oil vapors
Assignee: Knecht Filterwerk GmbH
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Filing: 1973-02-20
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Granted: 1974-08-13
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Expires: 1993-02-20
Abstract
Abstract Apparatus for filtering oil vapors exhausted from the crank case of a motor or the like, comprising a housing having a frontal cover disk and a star shaped pleated filter element located in the housing. An inlet member comprises a tubular connection having a pair of clamping means spaced from each other and adapted to clamp over a pleat, is formed integrally with the cover disk. The clamping means span a defined sector of the filter element.
Inventors
- 👤 G Frey
- 👤 H Kalberer
- 👤 A Nikolaus
- 👤 W Ebing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:29
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10209; F02M35/10222; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F02M25/00; F02M25/06; F02M35/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/19; Y10S55/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
Apparatus for filtering oil vapors exhausted from the crank case of a motor or the like, comprising an enclosed housing, a star shaped pleated filter element located in said housing, an inlet member impermeable to oil vapors comprising a tubular connection extending into said housing having a pair of clamping means integrally extending therefrom and spaced from each other, said tubular connection spanning a defined sector of said filter element and each of said clamping means clamping over a pleat to block flow of oil vapor out of said sector.
Claim 2
Dependent Claim
90 words
Apparatus for filtering oil vapors exhausted from the crank case of a motor or the like, comprising an enclosed housing, a star shaped pleated filter element located in said housing, an inlet member impermeable to oil vapors comprising a tubular connection extending into said housing having a pair of clamping means integrally extending therefrom and spaced from each other, said tubular connection spanning a defined sector of said filter element and each of said clamping means clamping over a pleat to block flow of oil vapor out of said sector.
Claim 3
Dependent Claim
95 words
The apparatus according to claim 1 wherein said filter element is surrounded by a perforated protecting jacket and said inlet member comprises a shoulder plate integral with said tube having a shape conforming to that of said jacket, said clamping means comprising a resilient split wall extending from opposed ends of said shoulder, each wall being adapted to engage over the closed end of a pleat, and including a retaining member adapted to be inserted in the open end of each of the pleats and cooperaging with said split wall to hold said pleat therein.
Claim 4
Dependent Claim
20 words
The apparatus according to claim 2, wherein said inlet member is formed of plastic and molded together with said jacket.
Claim 5
Dependent Claim
19 words
The apparatus according to claim 2 wherein said split wall and said cooperating retaining member include mating detent means.
Claim 6
Dependent Claim
30 words
The apparatus according to claim 4 wherein said retaining member has a longitudinal bead on each side and said split wall is provided with a groove for receiving the same.
Claim 7
Dependent Claim
26 words
The apparatus according to claim 4 including a seal ring surrounding said tubular connection adapted to be located between the housing and the surrounding protective jacket.
Claim 8
Dependent Claim
32 words
The apparatus according to claim 2 wherein spacer means is provided on the under surface of said shoulder plate to maintain said plate a fixed distance from the edges of said pleats.
Claim 9
Dependent Claim
32 words
The apparatus according to claim 2 wherein said tubular connection is offset from the center of said shoulder plate and extends in a line angular to the surface of the shoulder plate.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |