Environment control chamber with safety switch
First Claim
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1. An environmental chamber comprising:
- three collapsible ribs moveable between a stable expanded position and a stable collapsed position, each of said ribs extending from a common restrained convergence region to an unrestrained supporting end with all of said supporting ends lying in substantially the same plane,flexible, foldable, substantially air-impermeable panels supported by said ribs and covering the area between said ribs whereby an enclosed chamber is formed by said flexible panels when said ribs are in extended position and on a supporting surface,each of said panels between two adjacent ribs having a skirt extending beyond the straight line between the supporting ends of said two adjacent ribs, whereby said skirt lies loosely on a surface on which said supporting ends of said ribs are supported,an electrically-operated heat source within said chamber,a switch to actuate said heat source, said switch associated with a collapsible rib to hold said switch in open position when said rib is in collapsed position.
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Abstract
A collapsible environmental chamber in which bread dough may be placed during rising, the chamber including umbrella-like ribs between which fabric panels are positioned, each fabric panel having a skirt depending beneath the straight line between adjacent leg ends whereby the chamber in its expanded condition will have a skirt portion lying loosely adjacent a supporting surface to prevent drafts from entering the interior of the chamber during the bread rising process.
65 Citations
1 Claim
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1. An environmental chamber comprising:
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three collapsible ribs moveable between a stable expanded position and a stable collapsed position, each of said ribs extending from a common restrained convergence region to an unrestrained supporting end with all of said supporting ends lying in substantially the same plane, flexible, foldable, substantially air-impermeable panels supported by said ribs and covering the area between said ribs whereby an enclosed chamber is formed by said flexible panels when said ribs are in extended position and on a supporting surface, each of said panels between two adjacent ribs having a skirt extending beyond the straight line between the supporting ends of said two adjacent ribs, whereby said skirt lies loosely on a surface on which said supporting ends of said ribs are supported, an electrically-operated heat source within said chamber, a switch to actuate said heat source, said switch associated with a collapsible rib to hold said switch in open position when said rib is in collapsed position.
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Specification
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Current AssigneeMichael E. Sheppard
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Original AssigneeMichael E. Sheppard
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InventorsSheppard, Michael E., Sheppard, Thomas M.
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Primary Examiner(s)Hornsby, Harvey C.
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Assistant Examiner(s)Graham, Gary K.
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Application NumberUS07/440,805Time in Patent Office1,292 DaysField of Search99/449, 99/467, 99/493, 99/342, 99/341, 99/483, 99/646 R, 126/281, 219/400, 219/385, 219/535, 219/545, 219/211, 219/212, 219/527, 219/528, 219/529, 135/91, 135/98, 135/115, 135/116, 135/92, 135/93, 135/94, 135/95, 135/96, 135/97US Class Current99/483CPC Class CodesA21D 8/04 treating dough with microor...
