Patent US5264824A successfully refreshed from Google Patents.
US5264824A
Expired / Lapsed
US
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Audio emitting tread mat system
Assignee: Individual
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Filing: 1992-04-21
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Granted: 1993-11-23
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Expires: 2012-04-21
Abstract
Abstract A sound-giving tread mat has a bag-like tread mat, a foam rubber sheet interposed in the tread mat, one or more buzzers partly adhered on the inner surface of the lower layer of the tread mat, and a sound-giving electric unit to give out sounds. The buzzer(s) is electrically connected with the sound-giving unit placed on a corner surface of the tread mat or somewhere inside a door in a house. When the tread mat is treaded on with a shoe of a visitor, the buzzer(s) can be vibrated by the compressed air in the tread mat to give out an electric signal, and then the sound-giving electric unit amplifies the electric signal coming from the buzzer(s) and gives out sounds.
Inventors
- 👤 Jin-rong Hour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:35
CPC Classifications
G; G08; G08B; G08B3/00; G08B3/10; G08B13/00; G08B13/02; G08B13/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
An audio emitting tread mat system comprising: (a) a substantially enclosed bag-shaped tread mat having at least one opening formed therethrough for passage of at least a pair of lead wires; (b) a foam rubber sheet located within said substantially enclosed bag-shaped tread mat; (c) at least one pressure actuated transducer positionally located between a lower surface of said foam rubber sheet and an inner surface of said bag-shaped tread mat; (d) a sound device located on an outer surface of said bag-shaped tread mat coupled to said air pressure actuated transducer by said lead wires, said foam rubber sheet being compressibly displaceable for increasing pressure transient within said bag-shaped tread mat allowing air to pass external to said tread mat through said opening and simultaneously actuating said air pressure actuated transducer for developing an electrical signal applied to said sound device through said lead wires, said air pressure actuated transducer being located within a recess formed within said lower surface of said foam rubber sheet providing an air gap between said inner surface of said tread mat and said air pressure actuated transducer for receiving vibrations of said compressed air responsive to a loading force applied to said foam rubber sheet.
Claim 2
Dependent Claim
202 words
An audio emitting tread mat system comprising: (a) a substantially enclosed bag-shaped tread mat having at least one opening formed therethrough for passage of at least a pair of lead wires; (b) a foam rubber sheet located within said substantially enclosed bag-shaped tread mat; (c) at least one pressure actuated transducer positionally located between a lower surface of said foam rubber sheet and an inner surface of said bag-shaped tread mat; (d) a sound device located on an outer surface of said bag-shaped tread mat coupled to said air pressure actuated transducer by said lead wires, said foam rubber sheet being compressibly displaceable for increasing pressure transient within said bag-shaped tread mat allowing air to pass external to said tread mat through said opening and simultaneously actuating said air pressure actuated transducer for developing an electrical signal applied to said sound device through said lead wires, said air pressure actuated transducer being located within a recess formed within said lower surface of said foam rubber sheet providing an air gap between said inner surface of said tread mat and said air pressure actuated transducer for receiving vibrations of said compressed air responsive to a loading force applied to said foam rubber sheet.
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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) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |