US4957629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Obstetrical filter and trap
Assignee: Individual
•
Filing: 1988-11-28
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Granted: 1990-09-18
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Expires: 2008-11-28
Abstract
Abstract A filter for obstetrical fluids and particulate matter having an enclosure containing a first chamber and a second chamber is disclosed. The first chamber has a solid partition forming first and second cavities in the first chamber. The first cavity has an inlet and the second cavity has an outlet. The second chamber contains a filter and the edge of the partition is pressed against the surface of the filter.
Inventors
- 👤 Lawrence M. Smith
- 👤 Emily M. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:32
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D35/00; A; A61; A61M; A61M2202/00; A61M2202/04; A61M2202/0494
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
87 words
A filter for obstetrical fluids and particulate matter, comprising: a. an enclosure containing a first chamber and a second chamber; 1. said first chamber having therein: A. a solid partition having an edge, said partition forming first and second cavities in said first chamber; I. said first cavity having an inlet thereinto; II. said second cavity having an outlet therefrom; 2. said second chamber containing a filter means having a surface thereon; and 3. said edge of said partition pressing against said surface of said filter means.
Claim 2
Dependent Claim
87 words
A filter for obstetrical fluids and particulate matter, comprising: a. an enclosure containing a first chamber and a second chamber; 1. said first chamber having therein: A. a solid partition having an edge, said partition forming first and second cavities in said first chamber; I. said first cavity having an inlet thereinto; II. said second cavity having an outlet therefrom; 2. said second chamber containing a filter means having a surface thereon; and 3. said edge of said partition pressing against said surface of said filter means.
Claim 3
Dependent Claim
15 words
The filter of claim 1, wherein said filter means fits snugly in said second chamber.
Claim 4
Dependent Claim
31 words
The filter of claim 1, wherein said first chamber is positioned substantially vertically above said second chamber, and said filter means is spaced away from the sidewall of said second chamber.
Claim 5
Dependent Claim
98 words
A filter for obstetrical fluids and particulate matter, comprising: a. an enclosure containing a first chamber and a second chamber; 1. said first chamber having therein: A. a solid partition having an edge, said partition forming first and second cavities in said first chamber; I. said first cavity having an inlet thereinto; II. said second cavity having an outlet therefrom; 2. said second chamber wholly occupied by filter means having a surface; and 3. said edge of said partition pressing against said surface of said filter means, forcing all of said fluid to flow through said filter means.
Claim 6
Dependent Claim
98 words
A filter for obstetrical fluids and particulate matter, comprising: a. an enclosure containing a first chamber and a second chamber; 1. said first chamber having therein: A. a solid partition having an edge, said partition forming first and second cavities in said first chamber; I. said first cavity having an inlet thereinto; II. said second cavity having an outlet therefrom; 2. said second chamber wholly occupied by filter means having a surface; and 3. said edge of said partition pressing against said surface of said filter means, forcing all of said fluid to flow through said filter means.
Claim 7
Dependent Claim
13 words
The filter of claim 1, 2, 3, 4, wherein said enclosure is separable.
Claim 8
Dependent Claim
21 words
The filter of claim 1, 2, 3, 4, wherein said enclosure is separable into said first chamber and said second chamber.
Claim 9
Dependent Claim
22 words
The filter of claim 1, 2, 3, 4, wherein said first cavity is adjacent to said second cavity in said first chamber.
Claim 10
Dependent Claim
14 words
The filter of claim 1, 2, 3, 4, wherein said filter means is replacable.
Claim 11
Dependent Claim
106 words
A filter for obstetrical fluids and particulate matter, comprising: a. an enclosure separable into a first chamber and a second chamber; 1. said first chamber having therein: A. a solid partition having an edge, said partition forming first and second adjacent cavities in said first chamber; I. said first adjacent cavity having inlet means thereinto; II. said second adjacent cavity having outlet means therefrom; 2. said second chamber removably receiving replacable filter means having a surface thereon; and 3. said edge of said partition pressing against said surface of said replacable filter means when said first and said second chambers are assembled to form said enclosure.
Claim 12
Dependent Claim
106 words
A filter for obstetrical fluids and particulate matter, comprising: a. an enclosure separable into a first chamber and a second chamber; 1. said first chamber having therein: A. a solid partition having an edge, said partition forming first and second adjacent cavities in said first chamber; I. said first adjacent cavity having inlet means thereinto; II. said second adjacent cavity having outlet means therefrom; 2. said second chamber removably receiving replacable filter means having a surface thereon; and 3. said edge of said partition pressing against said surface of said replacable filter means when said first and said second chambers are assembled to form said enclosure.
Claim 13
Dependent Claim
15 words
The filter of claim 9, wherein said filter means fits snugly in said second chamber.
Claim 14
Dependent Claim
31 words
The filter of claim 9, wherein said first chamber is positioned substantially vertically above said second chamber, and said filter means is spaced away from the sidewall of said second chamber.
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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) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |