US6716266B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust filter
Assignee: BREATHECLEAN Pty Ltd
•
Filing: 2001-09-07
•
Granted: 2004-04-06
•
Expires: 2021-09-07
Abstract
Abstract A dust filter for a ducted air delivery system has a frame, a filter, an extension of rubbery thermoplastic material, and an integral lip. The frame defines an open mouth and a body portion formed of rubbery thermoplastics material reinforced with one or more stiffening elements. The filter material extends from sides of the frame to cover the open mouth. The intermediate extension of rubbery thermoplastic material extends outwardly from a joint with the body portion. The integral lip of flexible resilient material is joined to the intermediate extension. The lip of flexible resilient material is shaped to make a friction fit within the outlet of a duct to hold the dust filter therein.
Inventors
- 👤 Craig Douglas McNaughton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:30
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0002; B01D46/0005; B01D46/0084; B01D46/0086; B01D46/10; B01D2279/00; B01D2279/50; Y; Y10; Y10S; Y10S55/00; Y10S55/31
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
212 words
A dust filter for a ducted air delivery system comprising, a frame defining an open mouth, the frame having a body portion formed of rubbery thermoplastics material reinforced with one or more stiffening elements, a filter material extending from the-sides of the frame to cover the open mouth, an intermediate extension of rubbery thermoplastic material extending outwardly from a join with the body portion, and an integral lip of flexible resilient material joined to the intermediate extension at a location outwardly displaced from the join with the body portion the integral lip extending outwardly from the body portion in a different direction to the intermediate extension so that it makes an angle with the intermediate extension, the integral lip being less than half the thickness of the body portion over at least half of its extent, wherein the lip of flexible resilient material is shaped so that it may make a friction fit within the outlet of a duct to hold the dust filter therein, and upper and lower layers of the rubbery thermoplastic material extend above and below the one or more stiffening elements to form a four layer composite comprising the under and lower layers of rubbery thermoplastics material, the stiffening elements and a peripheral edge of the filter material.
Claim 2
Dependent Claim
212 words
A dust filter for a ducted air delivery system comprising, a frame defining an open mouth, the frame having a body portion formed of rubbery thermoplastics material reinforced with one or more stiffening elements, a filter material extending from the-sides of the frame to cover the open mouth, an intermediate extension of rubbery thermoplastic material extending outwardly from a join with the body portion, and an integral lip of flexible resilient material joined to the intermediate extension at a location outwardly displaced from the join with the body portion the integral lip extending outwardly from the body portion in a different direction to the intermediate extension so that it makes an angle with the intermediate extension, the integral lip being less than half the thickness of the body portion over at least half of its extent, wherein the lip of flexible resilient material is shaped so that it may make a friction fit within the outlet of a duct to hold the dust filter therein, and upper and lower layers of the rubbery thermoplastic material extend above and below the one or more stiffening elements to form a four layer composite comprising the under and lower layers of rubbery thermoplastics material, the stiffening elements and a peripheral edge of the filter material.
Claim 3
Dependent Claim
49 words
A dust filter according to claim 1 wherein the one or more stiffening elements are retained in one or more recesses formed in the body portion and the intermediate extension extends outwardly from the join with the body portion at an angle to a plane defining the open mouth.
Claim 4
Dependent Claim
19 words
A dust filter according to claim 1 wherein the dust filter is square or rectangular with cut off corners.
Claim 5
Dependent Claim
23 words
A dust filter according to claim 1 including a plurality of integrally moulded tabs extending from an outer edge of the integral lip.
Claim 6
Dependent Claim
33 words
A dust filter according to claim 1 having a unitary stiffening element which extends around the frame and the body portion has been moulded directly onto the stiffening element which is retained therein.
Claim 7
Dependent Claim
17 words
A dust filter according to claim 1 wherein the filter material and frame are heat welded together.
Claim 8
Dependent Claim
31 words
A dust filter according to claim 1 wherein the filter material is bonded to an integrally formed internal ledge extending from a body portion of the frame around the open mouth.
Claim 9
Dependent Claim
17 words
A dust filter according to claim 1 wherein the intermediate extension and lip together form a V-shape.
Claim 10
Dependent Claim
17 words
A dust filter according to claim 1 wherein the filter material comprises a batt of non-woven fibres.
Claim 11
Dependent Claim
20 words
A dust filter according to claim 9 wherein the fibres are comprised of polyester, fibreglass, wool, cotton arylamides or arylimides.
Claim 12
Dependent Claim
39 words
A dust filter according to claim 1 including an indicator which is adapted to indicate that the filter requires replacement or has expired after a predetermined time or amount of use or that the filter is blocked by dust.
Claim 13
Dependent Claim
40 words
A dust filter according to claim 1 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 14
Dependent Claim
37 words
A dust filter according to claim 1 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 15
Dependent Claim
17 words
A dust filter according to claim 2 wherein the filter material and frame are heat welded together.
Claim 16
Dependent Claim
40 words
A dust filter according to claim 2 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 17
Dependent Claim
40 words
A dust filter according to claim 3 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 18
Dependent Claim
40 words
A dust filter according to claim 4 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 19
Dependent Claim
40 words
A dust filter according to claim 5 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 20
Dependent Claim
40 words
A dust filter according to claim 8 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 21
Dependent Claim
40 words
A dust filter according to claim 9 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 22
Dependent Claim
40 words
A dust filter according to claim 10 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 23
Dependent Claim
40 words
A dust filter according to claim 11 wherein the frame comprises a body portion provided with a recess and the filter material is retained in the recess in abutment with one or more stiffening elements also retained in the recess.
Claim 24
Dependent Claim
37 words
A dust filter according to claim 3 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 25
Dependent Claim
37 words
A dust filter according to claim 4 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 26
Dependent Claim
37 words
A dust filter according to claim 5 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 27
Dependent Claim
36 words
A dust filter according to claim 7 wherein the lip extends laterally with respect to the frame and is joined to the body portion an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 28
Dependent Claim
37 words
A dust filter according to claim 8 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 29
Dependent Claim
37 words
A dust filter according to claim 9 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 30
Dependent Claim
37 words
A dust filter according to claim 10 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 31
Dependent Claim
37 words
A dust filter according to claim 11 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
Claim 32
Dependent Claim
28 words
A dust filter according to claim 11 wherein the lip extends laterally with respect to the frame and is joined to the body portion by a ramp portion.
Claim 33
Dependent Claim
37 words
A dust filter according to claim 2 wherein the lip extends laterally with respect to the frame and is joined to the body portion by an intermediate extension which extends outwardly and upwardly away from the frame.
References Cited (Backward Citations)
US1739372A
Cited
US2252724A
Cited
US3635001A
Cited
US3869392A
Cited
US4356791A
Cited
US4277267A
Cited
AU8553882A
Cited
US4854953A
Cited
US5240487A
Cited
US5472380A
Cited
US5707411A
Cited
AU4095796A
Cited
US6162272A
Cited
CA2168085A1
Cited
WO1997040919A1
Cited
US5902361A
Cited
US5800588A
Cited
US5776218A
Cited
WO1999002926A1
Cited
WO1999002927A1
Cited
US6045598A
Cited
US6183526B1
Cited
US6267796B1
Cited
US6203592B1
Cited
US6406509B1
Cited
US6200465B1
Cited
US6454826B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-04-06 | 2007-10-06 | 2008-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-04-06 | 2011-10-06 | 2012-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-04-06 | 2015-10-06 | 2016-04-06 | $7700.00 | Window Closed / Lapsed |