US5283039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-well filtration apparatus
Assignee: 3M Co
•
Filing: 1993-01-06
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Granted: 1994-02-01
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Expires: 2013-01-06
Abstract
Abstract A multi-well filtration apparatus is provided that has a housing, a multi-well filtration plate, and a pivotable member. The pivotable member secures the multi-well filtration plate to the housing and is associated with a resilient member. When the multi-well filtration plate is pressed against the pivotable member, it pivots, and the resilient member compresses to allow the pivotable member to instantaneously engage the multi-well filtration plate to secure it to the housing. The pivotable member can quickly release the multi-well filtration plate by simply exerting a force on a surface of the pivotable member.
Inventors
- 👤 James E. Aysta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:25
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5025; B01L3/50255; B01L2200/00; B01L2200/04; B01L2400/00; B01L2400/04; B01L2400/0475; B01L2400/0487; B01L2400/049; B01L9/00; B01L9/52; B01L9/523
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
73 words
An apparatus for supporting a multi-well filtration plate, which comprises: (a) a housing; and (b) a means for securing a multi-well filtration plate to the housing, the securing means being attached to the housing and including at least one pivotable member and being capable of permitting the multi-well filtration plate to be secured to the housing by pressing the multi-well filtration plate against the at least one pivotable member of the securing means.
Claim 2
Independent Claim
73 words
An apparatus for supporting a multi-well filtration plate, which comprises: (a) a housing; and (b) a means for securing a multi-well filtration plate to the housing, the securing means being attached to the housing and including at least one pivotable member and being capable of permitting the multi-well filtration plate to be secured to the housing by pressing the multi-well filtration plate against the at least one pivotable member of the securing means.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1, wherein the securing means has a resilient means that permits the multi-well filtration plate to be snapped into securement to the apparatus.
Claim 4
Dependent Claim
35 words
The apparatus of claim 1, further comprising a means for quickly releasing the multi-well filtration plate from the housing, the quick releasing means operating by exerting a force on a surface of the pivotable member.
Claim 5
Dependent Claim
38 words
The apparatus of claim 1, wherein the housing is adapted to accommodate a plurality of collecting containers for receiving liquids filtered through a multi-well filtration plate having a plurality of wells that each have a filter located therein.
Claim 6
Dependent Claim
63 words
The apparatus of claim 4, wherein the housing has a vacuum chamber, the vacuum chamber assisting in drawing liquid through each filter in the wells of the multi-well filtration plate when the multi-well filtration plate is secured to the housing, the liquid drawn through each filter passing into a separate collecting container when the plurality of collecting containers are disposed in the housing.
Claim 7
Dependent Claim
32 words
The apparatus of claim 1, wherein the securing means has a stationary flange for retaining a first flange of the multi-well filtration plate when the multi-well filtration is secured to the housing.
Claim 8
Dependent Claim
45 words
The apparatus of claim 6, wherein the pivotable member of the securing means is in functional contact with a resilient means that compresses when the pivotable member pivots in a first direction in response to a force exerted upon a surface of the pivotable member.
Claim 9
Dependent Claim
105 words
The apparatus of claim 1, wherein the securing means includes first and second pivotable members for receiving first and second opposing flanges of the multi-well filtration plate, respectively, the securing means including first and second resilient means in functional contact with the first and second pivotable members, respectively, to allow the securing means to pivot in a first direction in response to a force from the multi-well filtration plate so that the securing means can receive the first and second opposing flanges, respectively, of the multi-well filtration plate, and to pivot in a second direction to instantaneously secure the multi-well filtration plate to the housing.
Claim 10
Dependent Claim
52 words
The apparatus of claim 8, wherein the first and second pivotable members each have first and second surfaces that force the multi-well filtration plate towards the housing, the first and second surfaces overlapping the first and second opposing flanges when the multi-well filtration plate is secured to the housing of the apparatus.
Claim 11
Dependent Claim
29 words
The apparatus of claim 1, wherein the securing means includes a guiding surface, and the securing means progressively opens in response to a force received by the guiding surface.
Claim 12
Dependent Claim
53 words
The apparatus of claim 10, wherein the pivotable member pivots in a first direction about an axis in response to a force received by the guiding surface to open the securing means, and, when that force is no longer applied to the guiding surface, the pivotable member instantaneously pivots in a second direction.
Claim 13
Independent Claim
65 words
An apparatus for performing a filtration, which comprises: (a) a housing; and (b) a means for securing a filter-containing member to the housing, the securing means being attached to the housing and including at least one pivotable member, the securing means having the ability to permit the filter-containing member to be instantaneously secured to the housing by pressing the filter-containing member against the pivotable member.
Claim 14
Independent Claim
65 words
An apparatus for performing a filtration, which comprises: (a) a housing; and (b) a means for securing a filter-containing member to the housing, the securing means being attached to the housing and including at least one pivotable member, the securing means having the ability to permit the filter-containing member to be instantaneously secured to the housing by pressing the filter-containing member against the pivotable member.
Claim 15
Dependent Claim
26 words
The apparatus of claim 12, wherein the securing means has a resilient means that permits the filter-containing member to be snapped into securement to the apparatus.
Claim 16
Dependent Claim
34 words
The apparatus of claim 12, further comprising a means for quickly releasing the filter-containing member from the housing, the quick releasing means operating by exerting a force on a surface of the pivotable member.
Claim 17
Independent Claim
83 words
An apparatus for supporting a multi-well filtration plate, which comprises: (a) a housing having an opening for receiving a multi-well filtration plate; and (b) a pivotable member secured to the housing, the pivotable member having (i) a guiding surface for directing a multi-well filtration plate to the opening, (ii) a surface for engaging a multi-well filtration plate to secure the multi-well filtration plate to the housing, and (iii) a surface for receiving a force to disengage a multi-well filtration plate from the housing.
Claim 18
Independent Claim
83 words
An apparatus for supporting a multi-well filtration plate, which comprises: (a) a housing having an opening for receiving a multi-well filtration plate; and (b) a pivotable member secured to the housing, the pivotable member having (i) a guiding surface for directing a multi-well filtration plate to the opening, (ii) a surface for engaging a multi-well filtration plate to secure the multi-well filtration plate to the housing, and (iii) a surface for receiving a force to disengage a multi-well filtration plate from the housing.
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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) | 1997-01-31 | 1997-08-02 | 1998-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-31 | 2001-08-02 | 2002-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-31 | 2005-08-02 | 2006-02-01 | $7700.00 | Window Closed / Lapsed |