Patent US6888466B2 successfully refreshed from Google Patents.
US6888466B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter timer
Assignee: Individual
•
Filing: 2003-04-10
•
Granted: 2005-05-03
•
Expires: 2023-04-10
Abstract
Abstract A novel air filter and timer for alerting persons responsible for changing or cleaning the air filter that it is time for servicing. An audible alarm is provided on the timer to emit a prolonged or intermittent audible alarm to indicate the need for servicing. The alarm can be incorporated into the filter or made separately and affixable to an air filter. The alarm sounds after a set time period to alert the user to change the filter.
Inventors
- 👤 John Dermody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:49
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0084; B01D46/0086; B01D46/42; B01D46/429; F; F24; F24F; F24F13/00; F24F13/28; F24F11/00; F24F11/30; F24F11/32; F24F11/39; F24F11/50; F24F11/61
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
68 words
An air filter for mounting in an air treatment system comprising: an air filter consisting substantially of a filtering media and a substantially rigid filter media border connected to and retaining said filtering media in a taut position; a timer mounted to said air filter for counting between a start position and an alarm position; said timer having an alarm activated when the timer reaches said alarm position.
Claim 2
Dependent Claim
68 words
An air filter for mounting in an air treatment system comprising: an air filter consisting substantially of a filtering media and a substantially rigid filter media border connected to and retaining said filtering media in a taut position; a timer mounted to said air filter for counting between a start position and an alarm position; said timer having an alarm activated when the timer reaches said alarm position.
Claim 3
Dependent Claim
17 words
The air filter alarm system according to claim 1 , wherein said alarm is an audible alarm.
Claim 4
Dependent Claim
39 words
The air filter alarm system according to claim 1 , wherein said timer is a count down filter, and said timer start position is preselected to be substantially the number of days between recommended servicings of said air filter.
Claim 5
Dependent Claim
20 words
The air filter alarm system according to claim 1 , wherein said timer is affixed to said filter media border.
Claim 6
Dependent Claim
23 words
The air filter alarm system according to claim 1 , wherein said timer is activated by depressing a start button on said timer.
Claim 7
Dependent Claim
21 words
The air filter alarm system according to claim 1 , wherein said air filter is incorporated into an air conditioning system.
Claim 8
Dependent Claim
103 words
An air filter alarm system for an air conditioning system having an air conditioning housing, comprising: an air filter consisting substantially of a timer, a filtering media and a filter media border; a timer affixed to said filter media border and having an alarm and a timing circuit; said alarm having an off position and an on position; said timer timing circuit for timing a preselected time period; said timer moving said alarm from said off position to said on position after the elapse of said preselected time period; said alarm emitting an alert signal when said alarm is in said on position.
Claim 9
Dependent Claim
103 words
An air filter alarm system for an air conditioning system having an air conditioning housing, comprising: an air filter consisting substantially of a timer, a filtering media and a filter media border; a timer affixed to said filter media border and having an alarm and a timing circuit; said alarm having an off position and an on position; said timer timing circuit for timing a preselected time period; said timer moving said alarm from said off position to said on position after the elapse of said preselected time period; said alarm emitting an alert signal when said alarm is in said on position.
Claim 10
Dependent Claim
22 words
An air filter according to claim 7 , wherein said preselected time period is substantially the cleaning cycle of said air filter.
Claim 11
Dependent Claim
17 words
An air filter according to claim 7 , further including a starter for initiating said timing circuit.
Claim 12
Dependent Claim
28 words
An air filter according to claim 7 , wherein said timer further includes a display for displaying the amount time until the elapse of said preselected time period.
Claim 13
Dependent Claim
24 words
An air filter according to claim 7 , wherein said timer further includes means for inputting said preselected timer period into said timing circuit.
Claim 14
Dependent Claim
26 words
An air filter according to claim 7 , wherein said timer further includes a key pad for inputting said preselected timer period into said timing circuit.
Claim 15
Dependent Claim
23 words
An air filter according to claim 7 , wherein said alarm emits an audible signal when said alarm is in said on position.
Claim 16
Dependent Claim
27 words
An air filter according to claim 7 , wherein said timer includes a reset button for moving said alarm from said on position to said off position.
Claim 17
Dependent Claim
106 words
An air conditioning system an air conditioning system housing, an air filter having a filtering media and a fibrous filter media border, and removably housed within said air conditioning system housing, a timer mounted to the air filter border and having an alarm and a timing circuit; said alarm having an off position and an on position; said timer timing circuit for timing a preselected time period; said timer moving said alarm from said off position to said on position after the elapse of said preselected time period on said timing circuit; said alarm emitting an alert signal when said alarm is in said on position.
Claim 18
Dependent Claim
106 words
An air conditioning system an air conditioning system housing, an air filter having a filtering media and a fibrous filter media border, and removably housed within said air conditioning system housing, a timer mounted to the air filter border and having an alarm and a timing circuit; said alarm having an off position and an on position; said timer timing circuit for timing a preselected time period; said timer moving said alarm from said off position to said on position after the elapse of said preselected time period on said timing circuit; said alarm emitting an alert signal when said alarm is in said on position.
Claim 19
Dependent Claim
22 words
An air filter according to claim 15 , wherein said preselected time period is substantially the cleaning cycle of said air filter.
Claim 20
Dependent Claim
35 words
An air filter according to claim 15 , further including a start button for initiating said timing circuit and a reset button for selectively moving said alarm from said on position to said off position.
Claim 21
Dependent Claim
28 words
An air filter according to claim 15 , wherein said timer further includes a display for displaying the amount time until the elapse of said preselected time period.
Claim 22
Dependent Claim
17 words
An air filter according to claim 15 , wherein said timer is replaced with each filter replacement.
Claim 23
Dependent Claim
23 words
An air filter according to claim 7 , wherein said alarm includes a speaker and said alert signal is an audible alarm signal.
References Cited (Backward Citations)
JPH02211261A
Cited
US5289362A
Cited
US4998228A
Cited
US5378254A
Cited
US5914453A
Cited
US6284129B1
Cited
US5935426A
Cited
US6106705A
Cited
US6149801A
Cited
US6040777A
Cited
US6239694B1
Cited
US6355177B2
Cited
US6494940B1
Cited
US6448896B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-05-02 | 2008-11-01 | 2009-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-05-02 | 2012-11-01 | 2013-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-05-02 | 2016-11-01 | 2017-05-03 | $7700.00 | Window Closed / Lapsed |