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Class 52/724.4 - Having arch feature


Subclass of Class 52 - Static structures (e.g., buildings)
Definition: Structure wherein the longitudinal dimension of the shaft
No. of patents: 8
Last issue date: 05/22/2007


NumberTitleIssue Date
7219478Concrete reinforcement structure
This invention relates to a reinforcement structure which is used in providing cementitious mixtures supplemental support and strength upon setting, and more particularly, to a reinforcement structure which comprises a plurality of oriented reinforcing fibrous and/o...
05/22/2007
6406220Arched support structure
A support structure and method for forming same for use in excavations such as underpasses, tunnels and the like for roads, rail or rivers. The support structure allows the utilization of the strength provided by using arch shaped sections and also minimi...
06/18/2002
6243994Joint for pre-cast concrete twin-leaf arch sections
A joint for pre-cast concrete twin-leaf arch sections is self-aligning when the two arch sections are initially brought into abutting contact with each other. The joint provides a rigid connection between the twin units and is achieved on site by means of...
06/12/2001
5655347Biarch-framing member for arched structures
A biarch consists of two coplanar arches, curved in the same direction and radially spaced with cross ties having shear rigidity in planes perpendicular to the cross section areal center curve of the arch pair. End ties resist relative tangential arch dis...
08/12/1997
5005799Patterns for determining the profile of an arch
A pattern for defining the profile of an arch is produced from a unitary block of material or materials having the required structural strength to support the arch materials during construction and sufficient ductility or resilience at its surface to acco...
04/09/1991
4831800Beam with an external reinforcement system
A longitudinally extending beam having a concrete upper flange, a web rigidly extending transversely downward from the upper flange along its length, and an arched portion extending between the spaced apart leg portions on the web. A rigid reinforcement m...
05/23/1989
4704754Tension arch structure
A structural system for use in bridges, buildings and other structures. The system supports part of its load by tension action and part of its load by arch action. Cables are stretched and anchored between end supports. Lateral compressive elements are pl...
11/10/1987
3984956Casing voussoir
A composite casing voussoir of the type constituted by a mass of concrete or like material and a metal reinforcement. The latter comprises a web having the general shape of a portion of a cylinder and a peripheral radially-extending fixing frame which has...
10/12/1976
 
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