US5771885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercise filter
Assignee: TRI-PACT ENTERPRISES Inc
•
Filing: 1996-02-22
•
Granted: 1998-06-30
•
Expires: 2016-02-22
Abstract
Abstract An exercise filter assembly comprises a housing with removable filters and two one-way valves. The filters remove any particulate matter three microns or greater from the air stream. The one-way valves, positioned in a unique manner, prevent undesired air flows from entering an individual's respiratory tract. The filter assembly is comprised of a lightweight sturdy plastic which is easy and comfortable to wear.
Inventors
- 👤 Andrew C. Putrello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:57
CPC Classifications
A; A62; A62B; A62B23/00; A62B23/02; A62B7/00; A62B7/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
133 words
A filter assembly comprising: a hollow body formed from upper and lower body sections attached along a center line defining an enclosed cavity having an inlet port, a first removable filter, a second removable filter, and a first one way valve in series for uni-directionally allowing the flow of air through the body such that air passes through the first filter, the second filter and the first one way valve; an exhaust port having an open end and a second one way valve for unidirectionally exhausting air from the body; at least one slot formed between a plurality of bosses extending inwardly from the inner surface of the body, and the first one way valve comprising a flap sheet inserted into a slot in the upper housing section approximately behind the second filter.
Claim 2
Dependent Claim
133 words
A filter assembly comprising: a hollow body formed from upper and lower body sections attached along a center line defining an enclosed cavity having an inlet port, a first removable filter, a second removable filter, and a first one way valve in series for uni-directionally allowing the flow of air through the body such that air passes through the first filter, the second filter and the first one way valve; an exhaust port having an open end and a second one way valve for unidirectionally exhausting air from the body; at least one slot formed between a plurality of bosses extending inwardly from the inner surface of the body, and the first one way valve comprising a flap sheet inserted into a slot in the upper housing section approximately behind the second filter.
Claim 3
Dependent Claim
23 words
The filter assembly as defined in claim 1 further comprising a front inlet port that is open to permit air to pass therethrough.
Claim 4
Dependent Claim
25 words
The filter assembly as defined in claim 1 further comprising a first curved slot defined by the bosses into which a filter may be inserted.
Claim 5
Dependent Claim
26 words
The filter assembly as defined in claim 1 further comprising a second slot defined by the bosses extending inwardly from the inner surfaces of the body.
Claim 6
Dependent Claim
25 words
The filter assembly as defined in claim 4 whereby the second slot is formed in an area of the body having a substantially constant width.
Claim 7
Dependent Claim
15 words
The filter assembly as defined in claim 1 whereby the bosses are triangular in shape.
Claim 8
Dependent Claim
25 words
The filter assembly as defined in claim 1 whereby the first filter has a curved flexible frame or cartridge carrying an activated carbon mesh filter.
Claim 9
Dependent Claim
25 words
The filter assembly as defined in claim 1 whereby the second filter comprises a generally rigid housing member or frame carrying a glass fiber filter.
Claim 10
Dependent Claim
36 words
The filter assembly as defined in claim 1 whereby the second one way valve comprises a rubber sheet attached to the lower body section and forms a seal with the leading edge of the exhaust port.
Claim 11
Dependent Claim
21 words
The filter assembly as defined in claim 9 whereby a mouthpiece is attached to the mouthpiece receiving neck of the body.
Claim 12
Dependent Claim
37 words
The filter assembly as defined in claim 1 whereby the body terminates in a small mouthpiece receiving neck having a tapered annular ring at the proximal end thereof for receiving and securing a mouthpiece to the neck.
Claim 13
Dependent Claim
14 words
The filter assembly as defined in claim 1 whereby the body is trumpet shaped.
Claim 14
Dependent Claim
26 words
The filter assembly as defined in claim 12 whereby the filter cartridge includes a pin to securely lock the cartridge into the aperture of the body.
Claim 15
Dependent Claim
27 words
The filter assembly as defined in claim 1 whereby a filter cartridge includes both the first and second filters and the first one way valve in series.
Claim 16
Dependent Claim
14 words
The filter assembly as defined in claim 1 whereby the body includes an aperture.
Claim 17
Dependent Claim
22 words
The filter assembly as defined in claim 1 whereby the first and second filters include a small handle for grasping the filters.
Claim 18
Dependent Claim
22 words
The filter assembly as defined in claim 1 whereby the first and second filters include air tight gasket seals at thier ends.
Claim 19
Dependent Claim
19 words
The filter assembly as defined in claim 1 whereby the body is comprised of a sturdy, lightweight, molded plastic.
Claim 20
Dependent Claim
14 words
The filter assembly as defined in claim 1 wherein the flap sheet is rubber.
Claim 21
Dependent Claim
114 words
A filter assembly comprising: a hollow body defining an enclosed cavity having an inlet port, a first removable filter, a second removable filter, and a first one way valve in series for unidirectionally allowing the flow of air through the body such that air passes through the first filter, the second filter and the first one way valve; an exhaust port having an open end and second one way valve for unidirectionally exhausting air from the body; at least one slot located on the inner surface of the body; and a first one way valve comprising a flap sheet inserted into at least one slot in the hollow body approximately behind the second filter.
Claim 22
Dependent Claim
114 words
A filter assembly comprising: a hollow body defining an enclosed cavity having an inlet port, a first removable filter, a second removable filter, and a first one way valve in series for unidirectionally allowing the flow of air through the body such that air passes through the first filter, the second filter and the first one way valve; an exhaust port having an open end and second one way valve for unidirectionally exhausting air from the body; at least one slot located on the inner surface of the body; and a first one way valve comprising a flap sheet inserted into at least one slot in the hollow body approximately behind the second filter.
References Cited (Backward Citations)
US3548823A
Cited
US4141703A
Cited
US4071026A
Cited
US4098270A
Cited
US4231364A
Cited
US4677976A
Cited
US4688567A
Cited
US5086768A
Cited
US5080094A
Cited
US5033507A
Cited
US5226412A
Cited
US5331957A
Cited
US5386825A
Cited
US5427092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |