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US 2019/0336801 A1Published application
Smoke screen apparatus with manual egress capability
OwnerSteven Alan Edwards, Herb Kaupinventors
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Abstract
This disclosure relates generally to a smoke screen apparatus for shielding humans from harmful exposure to smoke, noxious fumes, or contaminated air. For safety reasons the smoke screen must allow for manual egress through the screen using a release mechanism that can automatically recover to the protective state after egress.
Claims20
A smoke screen apparatus to prevent smoke migration from an area comprising:
- a side guide having an elongated channel at least partially defined by at least a guide base and one moveable elongated member;
- a screen having flexible heat resistant film and an enlarged side edge coupled to the film and that is sized to fit inside the elongated channel when the smoke screen is deployed;
- and
- the smoke screen apparatus configured to allow manual push-through egress from the area when the screen is deployed when a sufficient pressure is exerted on the flexible heat resistant film so that the enlarged edge of the screen causes the elongated moveable member to pivot relative to the guide base by a distance that allows the enlarged edge to exit the elongated channel.
1 more element
A smoke screen apparatus, comprising:
- a headbox assembly;
- a smoke screen coupled to the head box assembly, the smoke screen having flexible heat resistant film and at least one enlarged side edge coupled to a side portion of the film, the smoke screen being movable between deployed and retracted positions, the smoke screen being contained in the headbox assembly when in the retracted position;
- and
- opposing side guides adjacent to the headbox assembly and coupled to the smoke screen, the side guides engaging the smoke screen during movement to the deployed position, at least a first side guide having a guide base with an elongated channel therein configured to slidably receive the enlarged side edge, the first side guide having a moveable elongated member connected to the guide base and at least partially covering the elongated channel to releasably retain the enlarged side edge portion therein during movement of the smoke screen between the stowed and retracted positions, wherein elongated member is movable relative to guide base between a closed, retaining position and an open, released position, the enlarged edge is slidably retained in the channel when the elongated member is in the closed, retaining position, and wherein the enlarged edge is movable out of the channel when the elongated member is in the open, released position capture.
1 more element
A smoke screen apparatus, comprising:
- a headbox assembly;
- a smoke screen coupled to the head box assembly, the smoke screen having flexible heat resistant film and at least one enlarged side edge coupled to a side portion of the film, the smoke screen being movable between deployed and retracted positions, the smoke screen being contained in the headbox assembly when in the retracted position;
- opposing side guides adjacent to the headbox assembly and coupled to the smoke screen, the side guides engaging the smoke screen during movement to the deployed position, at least a first side guide having a guide base with an elongated channel therein configured to slidably receive the enlarged side edge, the first side guide having a moveable elongated member connected to the guide base and at least partially covering the elongated channel to releasably retain the enlarged side edge portion therein during movement of the smoke screen between the stowed and retracted positions, wherein elongated member is movable relative to guide base between a closed, retaining position and an open, released position, a biasing member being coupled to the elongated member and configured to urge the elongated member toward the closed, retaining position, the first side guide having a recovery opening in communication with the channel, the enlarged edge is slidably retained in the channel when the elongated member is in the closed, retaining position, and wherein the enlarged edge is movable out of the channel when the elongated member is in the open, released position capture;
- and
- a recovery gate coupled to the first side guide and configured to direct the enlarged edge through the recovery opening and into the channel after the enlarged edge has moved out of the channel during a manual egress event.
2 more elements
Dependencies are inferred from the claim text.