US3574983A — Cool wall modular chimney

Claim 1

Independent Claim 325 words

In combination with a roof structure that includes a plurality of spaced first joists and rafters, together with a fireplace situated therebelow, a freestanding roof supported chimney, which chimney includes: a. an elongate, tubular, vertical chimney roof section formed from a cementitious material that extends through an opening in said roof, the lower end of which is situated below said roof, with the upper end of said section being situated thereabove; b. at least one first tie plate disposed in a fixed position relative to the external surface of said roof section; c. at least one first bracket secured to one of said first joists and to said first tie plate to support said tubular roof section from said roof; d. a flue pipe of substantially lesser external transverse cross section than the interior cross section of said chimney roof section which extends downwardly therethrough to the upper interior of said fireplace; e. an elongate tubular vertical room section formed from a cementitious material that encircles said flue pipe above said fireplace and below said roof section, with the interior transverse cross section of said room section being substantially greater than the exterior cross section of said flue pipe; f. first tubular means for connecting the upper end portion of said room section to the lower end of said roof section; g. second means for holding said flue pipe in spaced relationship with the interior surfaces of said roof and room sections to define an annulus-shaped passage; h. third means adjacent said fireplace for admitting air into the lower portion of said passage, which air is subsequently heated by said flue pipe and thereafter moves upwardly in said passage to discharge therefrom above said roof, and with said upwardly moving air serving to prEvent transfer of any substantial quantity of heat from said flue pipe to said roof and room sections; and i. fourth means for supporting said tubular room section from said roof structure.

Claim 2

Dependent Claim 325 words

In combination with a roof structure that includes a plurality of spaced first joists and rafters, together with a fireplace situated therebelow, a freestanding roof supported chimney, which chimney includes: a. an elongate, tubular, vertical chimney roof section formed from a cementitious material that extends through an opening in said roof, the lower end of which is situated below said roof, with the upper end of said section being situated thereabove; b. at least one first tie plate disposed in a fixed position relative to the external surface of said roof section; c. at least one first bracket secured to one of said first joists and to said first tie plate to support said tubular roof section from said roof; d. a flue pipe of substantially lesser external transverse cross section than the interior cross section of said chimney roof section which extends downwardly therethrough to the upper interior of said fireplace; e. an elongate tubular vertical room section formed from a cementitious material that encircles said flue pipe above said fireplace and below said roof section, with the interior transverse cross section of said room section being substantially greater than the exterior cross section of said flue pipe; f. first tubular means for connecting the upper end portion of said room section to the lower end of said roof section; g. second means for holding said flue pipe in spaced relationship with the interior surfaces of said roof and room sections to define an annulus-shaped passage; h. third means adjacent said fireplace for admitting air into the lower portion of said passage, which air is subsequently heated by said flue pipe and thereafter moves upwardly in said passage to discharge therefrom above said roof, and with said upwardly moving air serving to prEvent transfer of any substantial quantity of heat from said flue pipe to said roof and room sections; and i. fourth means for supporting said tubular room section from said roof structure.

Claim 3

Dependent Claim 48 words

A chimney as defined in claim 1 wherein said first roof section and said room section are in vertical alignment and said first means comprises a second tubular roof section that connects to the lower end of said roof section and the upper end of said room section.

Claim 4

Dependent Claim 49 words

A chimney as defined in claim 1 wherein said second means comprise a plurality of circumferentially and longitudinally spaced clips secured to the exterior surface of said flue pipe, with the outer ends of said clips being disposed adjacent to the interior surfaces of said roof and room sections.

Claim 5

Dependent Claim 24 words

A chimney as defined in claim 1 wherein said third means comprises at least one port formed in the sidewall of said room section.

Claim 6

Dependent Claim 77 words

A chimney as defined in claim 1 wherein said fourth means includes: a. a plurality of tie rods threaded at the top that extend downwardly through circumferentially spaced, vertically aligned openings in said roof and room sections; b. fifth means for securing the lower ends of said rods to said room section; and c. a plurality of nuts which engage said threads on said rods, with said nuts resting on the upper extremity of said roof section.

Claim 7

Dependent Claim 74 words

A chimney as defined in claim 1 wherein said first roof section has a closed lower end and said room section an upper closed end, with said roof and room sections being in laterally spaced relationship and said first means comprises a second horizontal tubular roof section that extends between an opening formed in the lower portion of said first roof section and an opening provided in the upper portion of said room section.

Claim 8

Dependent Claim 139 words

A chimney as defined in claim 6 wherein said roof structure is defined by both said first angular joists and second joists that are horizontally disposed, which chimney further includes: a. a plurality of transversely aligned tie rods having threads on their upper ends which extend downwardly through spaced bores formed in said room section, with the lower ends of said rods being secured to the lower portion of said room section; b. at least one inverted U-shaped member that engages at least one of said horizontal joists in which member a plurality of openings are formed through which the ends of said rods that are threaded extend upwardly; and c. a plurality of nuts which engage said threads on said rods and bear against upper surfaces on said members to support said room section from said horizontal joists.

Claim 9

Dependent Claim 32 words

A chimney as defined in claim 6 which further includes fifth means for removably holding said second roof section in a sandwiched position between said first roof section and said room section.

Claim 10

Dependent Claim 78 words

A chimney as defined in claim 8 wherein said fifth means includes: a. a plurality of tie rods which extend through a plurality of axially aligned bores in said first and second roof sections and said room sections, said tie rods having outwardly projecting end portions on which threads are formed; and b. a plurality of nuts that engage said threads with said nuts bearing against the external surfaces of said first roof section and said room section.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-04-12	1974-10-12	1975-04-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-04-12	1978-10-12	1979-04-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-04-12	1982-10-12	1983-04-13	$7700.00	Window Closed / Lapsed

Cool wall modular chimney

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