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US 5,132,668 AGranted
Heat sensing alarm ashtray
OwnerTekung Leeinventor
Life of this patent
Estimating the term…
Abstract
An ashtray provided with a heat sensing element, an IC plate and an amplifier for emitting an alarm sound when a cigarette supported on the ashtray has burned down close to the edge of the ashtray.
Claims3
A heat sensing alarm ashtray comprising:
- a) a bottom tank;
- b) an upper cover for attachment to the bottom tank;
- c) at least one slot on a top portion of the upper cover for supporting a burning cigarette;
- d) a sonic alarm carried by a bottom portion of the upper cover, which alarm includes a heat sensing element positioned adjacent the slot for transmitting a signal when activated by the heat of the burning cigarette, an IC plate for receiving the signal from the heat sensing element and converting the signal into an acoustic signal, and an amplifier for receiving the acoustic signal from the IC plate and producing a corresponding alarm sound.
1 more element
Dependencies are inferred from the claim text.