Patent US4664800A successfully refreshed from Google Patents.
US4664800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micron chamber I.V. with support ring
Assignee: B Braun Medical Inc
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Filing: 1985-03-18
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Granted: 1987-05-12
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Expires: 2005-03-18
Abstract
Abstract A small micron filter unit comprising a main body connector unit, a single structure filter element, and an adapter unit for complementary engagement with the connector and for receiving and holding the single filter element. Preferably, the adapter unit is of soft material, such as flexible PVC, which allows the adapter unit to expand and receive a ring with ridge of the single filter element within a recess thereof. The ridge on the external circumference of the filter element ring forms a resilient indent in the flexible PVC material of the adapter. The compressive force exerted by the adapter around the filter ring functions to securely retain it in place and also forms a fluid and air axial seal. After assembly of the adapter unit within the connector body unit, an overall leakproof component filter device is formed. For further assurance of leakproofness, a plastic solvent such as THF can be applied between the adapter and connector units externally at the junction thereof for forming a permanently bonded component filter device.
Inventors
- 👤 Kenneth Raines
- 👤 John McGaughey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:33
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
117 words
A micron filter device comprising: rigid connector means for attachment to a liquid supply; a single integral filter means; a soft base adapter means for receiving and holding said single integral filter means; multiple means for retaining said connector means, filter means and base adapter means together in an assembled relationship; said rigid connector means comprising a cylindrical main body member having at least one cup-like portion for receiving said single integral filter means and said soft base adapter means therewithin; said single integral filter means including a support ring together with a central filter membrane completely across the inside of said support ring; and said support ring being completely around the circumference of the filter membrane.
Claim 2
Dependent Claim
117 words
A micron filter device comprising: rigid connector means for attachment to a liquid supply; a single integral filter means; a soft base adapter means for receiving and holding said single integral filter means; multiple means for retaining said connector means, filter means and base adapter means together in an assembled relationship; said rigid connector means comprising a cylindrical main body member having at least one cup-like portion for receiving said single integral filter means and said soft base adapter means therewithin; said single integral filter means including a support ring together with a central filter membrane completely across the inside of said support ring; and said support ring being completely around the circumference of the filter membrane.
Claim 3
Dependent Claim
57 words
The micron filter device defined in claim 1, wherein said multiple means for retaining said components together includes a ridge formed on the support ring of said single filter means around the circumference thereof, and said soft base adapter means expanding and contracting around said ridge when the filter means and base adapter means are assembled together.
Claim 4
Dependent Claim
37 words
The micron filter device defined in claim 2, wherein said multiple means further includes said rigid connector means exerting a compression force on said soft base adapter means after said single filter means has been mounted therewith.
Claim 5
Dependent Claim
39 words
The micron filter device defined in claim 3, together with plastic solvent added at the external junction between said rigid connector means and said soft base adapter means for preventing any axial movement therebetween after the final assembly thereof.
Claim 6
Dependent Claim
36 words
The micron filter device defined in claim 1, wherein said soft base adapter means includes a pair of cup-like cylinders back-to-back, with one of said cup-like cylinders being provided with a single filter receiving means therewithin.
Claim 7
Dependent Claim
41 words
The micron filter device defined in claim 5, wherein said single filter receiving means of said one cup-like cylinder comprises a recess provided in said one cup-like cylinder for the purpose of receiving said ring of the single filter means therewithin.
Claim 8
Dependent Claim
30 words
The micron filter device defined in claim 1, wherein said main body member further includes a pair of spaced cylinders on the main body member opposite to said cup-like portion.
Claim 9
Dependent Claim
29 words
The micron filter defined in claim 1, wherein said membrane has pores of approximately 15 micron size, and both said membrane and support ring are integrally molded from nylon.
Claim 10
Dependent Claim
6 words
A 15 micron filter device comprising:
Claim 11
Dependent Claim
6 words
A 15 micron filter device comprising:
Claim 12
Dependent Claim
59 words
a connector unit for use as a main body of the filter, a base adapter for complementary reception within said connector unit, a single integral filter element having a circumferential support ring completely therearound mounted between said connector unit and said base adapter, and multiple means cooperating with said filter ring for retaining said components together in assembled relationship.
Claim 13
Dependent Claim
59 words
a connector unit for use as a main body of the filter, a base adapter for complementary reception within said connector unit, a single integral filter element having a circumferential support ring completely therearound mounted between said connector unit and said base adapter, and multiple means cooperating with said filter ring for retaining said components together in assembled relationship.
Claim 14
Dependent Claim
22 words
The 15 micron filter device defined in claim 9, wherein said single integral filter element is molded in one piece of nylon.
Claim 15
Dependent Claim
18 words
The 15 micron filter device defined in claim 9, wherein said connector unit is formed of rigid PVC.
Claim 16
Dependent Claim
18 words
The 15 micron filter device defined in claim 9, wherein said base adapter is formed of soft PVC.
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |