Safety system for smoke and fumes
First Claim
1. Safety apparatus for use in a space in an enclosure in which fumes occur and tend to accumulate, wherein the enclosure has a closer capable of being opened for providing a closable opening from the space to the exterior, electrically operated power means for moving the closer between open and closed positions, and an electrical circuit for operating the power means, comprising,electrically operated exhaust means for exhausting gas from said space,a detector unit in said space capable of detecting fumes of a predetermined concentration, and in response thereto producing an electrical signal of relatively low voltage,the electrical circuit including first control means operable in response to production of said electrical signal for operating said power means and moving the closer to open position, and constantly holding it in that position until the electrical circuit is activated in a reset step,the electrical circuit including second control means operable in response to production of a said electrical signal for operating said exhaust means, and constantly holding it in operating condition until the electrical circuit is activated in a reset step, andmanually activated reset means for placing the electrical circuit in the condition it assumed before production of said electrical signal.
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Accused Products
Abstract
A detector unit, for detecting fumes, including carbon monoxide, is located in a garage, and circuitry controlled thereby automatically opens the garage door, or operates an exhaust blower, or both. The door remains open, or the exhaust blower continues operating, or both, until the circuitry is manually reset.
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Citations
5 Claims
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1. Safety apparatus for use in a space in an enclosure in which fumes occur and tend to accumulate, wherein the enclosure has a closer capable of being opened for providing a closable opening from the space to the exterior, electrically operated power means for moving the closer between open and closed positions, and an electrical circuit for operating the power means, comprising,
electrically operated exhaust means for exhausting gas from said space, a detector unit in said space capable of detecting fumes of a predetermined concentration, and in response thereto producing an electrical signal of relatively low voltage, the electrical circuit including first control means operable in response to production of said electrical signal for operating said power means and moving the closer to open position, and constantly holding it in that position until the electrical circuit is activated in a reset step, the electrical circuit including second control means operable in response to production of a said electrical signal for operating said exhaust means, and constantly holding it in operating condition until the electrical circuit is activated in a reset step, and manually activated reset means for placing the electrical circuit in the condition it assumed before production of said electrical signal.
Specification