Smoke detectors utilizing a hydrophilic substance
First Claim
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1. An ambient condition detector comprising:
- a housing which defines a sensing region;
a source for projecting a beam of radiant energy into the region;
a sensor carried by said housing for converting scattered radiant energy incident thereon to a corresponding electrical signal wherein the housing carries an element which is selected from a class which includes a surfactant containing plastic, a surfactant coated plastic, and a porous plastic which incorporates a hydrophilic substance.
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Abstract
A smoke detector incorporates a porous plastic material which carries a hydrophilic agent alone or in combination with a surfactant which can be sprayed or deposited onto structural elements of the detector. The detector can include a molded removable plastic element that carries a hydrophilic agent. The element can be arranged to surround a light beam injected into a sensing region of a photoelectric detector.
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Citations
24 Claims
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1. An ambient condition detector comprising:
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a housing which defines a sensing region; a source for projecting a beam of radiant energy into the region; a sensor carried by said housing for converting scattered radiant energy incident thereon to a corresponding electrical signal wherein the housing carries an element which is selected from a class which includes a surfactant containing plastic, a surfactant coated plastic, and a porous plastic which incorporates a hydrophilic substance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A smoke detector comprising:
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a housing which defines an internal region; a smoke sensor carried at least in part within the housing wherein the housing carries a hydrophilic substance.
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15. A detector comprising:
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a housing which defines an internal region; an ambient condition sensor carried at least in part within the housing wherein the housing carries a hydrophilic substance. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification