US5279733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter candle apparatus
Assignee: Bekaert NV SA
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Filing: 1992-08-31
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Granted: 1994-01-18
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Expires: 2012-08-31
Abstract
Abstract A filter candle apparatus is provided comprising an elongated mesh pack defining an axial opening therethrough and having an end cap fixedly secured to one end and an end fitting fixedly secured to the opposite end, the end fitting defining an opening therethrough which is coaxial with the axial opening of the mesh pack, a hollow core tube defining a plurality of openings therein positioned within the axial opening of the mesh pack and being removably slidable therethrough, the core tube having an end member surrounding one end thereof that engage the end fitting of the mesh pack, a ring-shaped bearing recessedly held within and by the end fitting of the mesh pack and engaging the core tube proximate the end member, and an outer guard defining apertures therein adjacently surrounding the mesh pack.
Inventors
- 👤 Paul Heymans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:48
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/96; B01D2201/00; B01D2201/04; B01D2201/0407
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
A filter candle apparatus comprising: an elongated mesh pack defining an axial opening therethrough, said mesh pack having an end cap fixedly secured to one end and an end fitting fixedly secured to an end opposite said end cap, said end fitting defining an opening therethrough co-axial with said axial opening of said mesh pack and having a recess defined therein; a hollow core tube defining a plurality of openings therein positioned within said axial opening of said mesh pack and being removably slidable therethrough, said core tube having an end member surrounding one end thereof, said end member engaging said end fitting on said mesh pack; and a ring-shaped bearing recessedly held within and by said recess of said end fitting circumjacent to said opening defined by said end fitting, said ring-shaped bearing engaging said core tube proximate said end member; wherein material can be filtered through said mesh pack and said core tube to pass into said core tube and exit through an axial opening defined in one end thereof.
Claim 2
Dependent Claim
172 words
A filter candle apparatus comprising: an elongated mesh pack defining an axial opening therethrough, said mesh pack having an end cap fixedly secured to one end and an end fitting fixedly secured to an end opposite said end cap, said end fitting defining an opening therethrough co-axial with said axial opening of said mesh pack and having a recess defined therein; a hollow core tube defining a plurality of openings therein positioned within said axial opening of said mesh pack and being removably slidable therethrough, said core tube having an end member surrounding one end thereof, said end member engaging said end fitting on said mesh pack; and a ring-shaped bearing recessedly held within and by said recess of said end fitting circumjacent to said opening defined by said end fitting, said ring-shaped bearing engaging said core tube proximate said end member; wherein material can be filtered through said mesh pack and said core tube to pass into said core tube and exit through an axial opening defined in one end thereof.
Claim 3
Dependent Claim
21 words
A filter candle apparatus according to claim 1 further including an outer guard defining apertures therein adjacently surrounding said mesh pack.
Claim 4
Dependent Claim
26 words
A filter candle apparatus according to claim 2 wherein said outer guard, said mesh pack and said core tube are securely held together by fastening means.
Claim 5
Dependent Claim
16 words
A filter candle apparatus according to claim 1 wherein said ring-shaped bearing defines an arcuate surface.
Claim 6
Dependent Claim
55 words
A filter candle apparatus according to claim 4 wherein said arcuate surface curves downward toward said end fitting of said mesh pack to provide a tight seal between said end fitting and said end member on said core tube, whereby said seal becomes tighter as pressure of material passing through said core tube is increased.
Claim 7
Dependent Claim
14 words
A filter candle apparatus according to claim 1 wherein said core tube is perforated.
Claim 8
Dependent Claim
21 words
A filter candle apparatus according to claim 1 wherein said core tube is threaded on said end proximate said end member.
References Cited (Backward Citations)
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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) | 1997-01-17 | 1997-07-19 | 1998-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-17 | 2001-07-19 | 2002-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-17 | 2005-07-19 | 2006-01-18 | $7700.00 | Window Closed / Lapsed |