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US 6,888,466 B2Granted
Air filter timer
OwnerJohn Dermodyinventor
Life of this patent
Estimating the term…
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.
Claims20
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.
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.
3 more elements
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.
4 more elements
Dependencies are inferred from the claim text.