Class 249/17 - Chimney

Subclass of Class 249 - Static molds
Definition: Apparatus for forming a chimney.
No. of patents: 21
Last issue date: 05/23/2006

Number	Title	Issue Date
7048249	Circular formwork Disclosed is a formwork element (1) which can be assembled with other formwork elements (1) so as to form a formwork structure. A formwork shell (4) having an adjustable curvature is supported by means of back supports (5) so as to create...	05/23/2006
6959903	Cast in place chimney form A cast in place chimney form and installation method therefor. The cast in place form being of a relatively light weight construction and having physical and visual features that allow it to be used as a chimney cap form and to be left as an element of the finished ...	11/01/2005
6508907	Chimney crown installation system A crown installation system for forming a crown in place on a pillar in a manner that avoids the need for heavy and complicated concrete form structures. The crown installation system includes a kit for forming a crown on a pillar, such as a chimney, havi...	01/21/2003
6349522	Brick block and process and apparatus therefor An apparatus and process for the manufacture of brick block, i.e. a concrete chimney or wall block, with an impressed brick grout pattern on the face thereof, comprises a mold adapted to fit a known concrete block manufacturing machine. The mold has grout...	02/26/2002
6153130	Method of installing a form in a foundry furnace A spacing tool to be inserted between a form and a foundry furnace during installation of the form in the foundry furnace comprises a first longitudinally extending member to contact the foundry furnace. A second longitudinally extending member is coupled...	11/28/2000
5137251	Pour window for a concrete form A pour window for a metal concrete form flexible to a predetermined arcuate shape. A window panel of a generally rectangular shape forms part of a door which is pivotally mounted at one edge thereof for movement between an open and a closed position there...	08/11/1992
5125617	Adjustable radius walers for forming Forms for a cylindrical wall of poured concrete are made of plywood sheets nailed to horizontally-spaced beams, to which are clamped transversely arranged walers. The walers are assembled in strings and the string are in parallel spaced relationship. The ...	06/30/1992
5029803	Device for adapting a formwork element to given radii of a circular formwork The present invention provides for a device for adapting a formwork element, including a formwork lining and at least two formwork beams, to a given curvature of circular framework. A device includes a web engaging a space between two formwork beams and a...	07/09/1991
5009047	Chimney crown mold A mold is provided for use in forming a chimney crown on the top of a chimney shell. The mold includes four side sections and four corner sections which are assembled together to form a complete unit. Each side section and each corner section has a base f...	04/23/1991
4917346	Concrete form shuttering A form for erecting structures having an plan shape, any generatrix and possibly changing wall thickness includes an inner form (1) and an outer form (2). Circumferentially closed support rings (5,6) are arranged horizontally spaced from the inner form as...	04/17/1990
4915345	Concrete forming system for curved walls A curved concrete forming structure to provide a 1000 psf system for forming curved walls having a radium in excess of 5'. The structure includes a series of arcuately curved metallic panels secured in stacked side-by-side assembly. The improvement partic...	04/10/1990
4742985	Formwork assembly for a poured concrete structure A formwork assembly for a poured concrete structure includes a plurality of formwork panels and girder-like members for supporting the panels. The panels comprise a concrete surface forming sheet and laterally spaced flange-like support members on the out...	05/10/1988
4729541	Formwork for round or polygonal construction There is disclosed a formwork for round or polygonal constructions with a formwork face having an adjustable curvature or circumference. The formwork has a chain of booms which are spaced apart from the formwork face and are composed of individual boom po...	03/08/1988
4728073	Formwork for forming reservoirs and pools Formwork (15) for moulding walls of reservoirs in any desired curved configuration. The formwork utilizes a flexible panel (18) having a form surface (17) on one side against which the reservoir wall may be moulded and connector means (37) on the other si...	03/01/1988
4679763	Concrete form having adjustable curvature and method for producing same The metal form has a flexible panel member with a perimetral flange projected laterally from one side thereof. Each of a pair of transversely opposite side sections of the flange is segmented by a plurality of longitudinally spaced V-shaped notches having...	07/14/1987
4619433	Apparatus for erecting arcuate walls of concrete or the like Apparatus for erection of arcuate walls of poured concrete has one or more deformable sheathings secured to turnable supports which are movably secured to one another by composite girders having alternating rigid variable-length links and fixed-length con...	10/28/1986
4562989	Apparatus for construction of concrete walls A concrete forming system for constructing small diameter concrete columns with a refractory liner on the inside of the column wall. The present invention supports the inner and outer forms for the column wall on jacking frames which travel vertically on ...	01/07/1986
4081227	Slip form A slip form for walls or chimneys including opposed frames each carrying form members, the opposed frames being adjustably tied together across the wall to be poured and further positioned and braced by scissor-arms extended between adjacent frames along ...	03/28/1978
4076777	Method and apparatus for forming a concrete roof Each one of a plurality of sector-shaped form members for a reinforced concrete or postensioned roof supported by a circumscribing wall, footing, columns or the like of a large building structure has an eyebolt located near its center of gravity to permit...	02/28/1978
4033547	Form for pouring conically tapering concrete structures A form for pouring a conical concrete structure has a framework of obliquely inclined beams radiating from the axis of the structure in angularly offset relationship. Circumferentially elongated connecting members connect each beam to the two angularly ad...	07/05/1977
4021014	Form for concrete walls A form for concrete which has inner and outer walls spaced apart. Each wall is formed by a plurality of vertical elements abutting each other vertically. A row of whaler lookout plates are mounted on the abutting sides of the vertical elements and support...	05/03/1977

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Class 249/17 - Chimney