Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7353641 | Void forming core formwork for concrete beam To render a formwork (10), having a hollow (11b) defined therein and embedded in the elongated concrete member (40) during casting of a concrete material, to be lightweight, environmentally friendly and inexpensive and to have a sufficien... | 04/08/2008 |
| 7243898 | Moulding accessory and method of using same A moulding accessory to form a void around a recessed lifting loop in a moulded concrete product such as a concrete cladding panel. The moulding accessory is formed from a body which is sized and shaped to fit with said lifting loop. The body is hollow, but sufficie... | 07/17/2007 |
| 7232605 | Hybrid natural-fiber composites with cellular skeletal structures The present invention relates to composite structural members comprising polymers, natural and synthetic fibers, and nano-scale platelets arranged in two- or three-dimensional cellular skeletal structure; more particularly referring to a low-cost natural-fiber based... | 06/19/2007 |
| 7107730 | PSSC complex girder A PSSC complex girder in which a section shape steel structure is formed by joining one or more section shape steel. The PSSC complex girder includes a tension means for tensioning the section shape steel structure with a tensional member so that the structure has a... | 09/19/2006 |
| 7080486 | Pass-through firestop device A cast-in-place pass through firestop device for providing a passage in a partition in a structure through which wires, cables, pipes, and the like are run includes a housing having a riser portion with frangible connections that define removable bands that can be r... | 07/25/2006 |
| 7070294 | Paver light A paver light having a masonry structure with an aperture that has a substantially constant diameter from an exterior surface to an interior surface of the masonry structure, and a lighting fixture positioned within the aperture of the masonry structure. The lightin... | 07/04/2006 |
| 7013927 | Sleeve for toilet flanges and drains A protective sleeve system for use by plumbers during installation of riser pipes in buildings, surrounds a pipe and maintains a space around the pipe. A sleeve surrounds the pipe such that a space is defined between the pipe and the sleeve and a plurality of spacer... | 03/21/2006 |
| 6941705 | Accessory for modular elements for the support and ventilation of crawl spaces, floor structures, floors or similar articles in the building field Accessory (20) for modular elements (10) for the support and ventilation of crawl spaces, floor structures, floors or similar articles in the building field, each comprising an upper horizontal wall (11) and a plurality of vertical supporting le... | 09/13/2005 |
| 6789366 | Lost mould element for manufacturing reinforced concrete flat slabs A lost mold element for manufacturing reinforced concrete flat slabs, which is intended, when used together with other mold elements, for creating voids and for allowing the molding of beams. The mold element is made of a recycled plastic material, having a shape of... | 09/14/2004 |
| 6767619 | Preform for manufacturing a material having a plurality of voids and method of making the same A beaded preform includes a plurality of adjacently positioned beads for forming a plurality of voids in an engineered material. The beaded preforms may be comprised of a filaments (single strand of beads) and mats (two-dimensional and three dimensional arrays of be... | 07/27/2004 |
| 6725611 | Sleeve holder for utility conduit An apparatus for receiving one end of a utility conduit sleeve within a concrete form. The apparatus has a tubular body with an interior surface intersecting first and second ends. The tubular body receives one end of the sleeve through one end and has a flexible fl... | 04/27/2004 |
| 6550207 | Modular element for crawl spaces and floor structures Modular element for floor structures or crawl spaces used in self-supporting structures, the modular element including an upper surface (11) and supporting legs (13), the modular element defining, either alone or in combination with one or more identical ... | 04/22/2003 |
| 6502364 | Spigot pipe anchor method and apparatus A process for anchoring a water line to a building wall for supporting an attached spigot is the step of selecting a spigot water line anchor having a generally spool shape having a center support member having a pair end flanges attached thereto having a... | 01/07/2003 |
| 6327822 | Modular prefabricated element used in building construction A building construction element is used to form cast concrete interspaces in a concrete slab. The element has a bowl shaped portion which has a concave upper surface forming substantially a catenary as seen in vertical section. Supports are connected with... | 12/11/2001 |
| 6216403 | Method, member, and tendon for constructing an anchoring device An anchoring device not accessible from one of its sides can be produced by making a cavity (11) of a particular shape and using tendons (4), each of which has an end portion (41) of adapted shape. The cavity may be made in different ways, especially by c... | 04/17/2001 |
| 6161355 | Construction using aluminum cans A system of tracks, brackets and containers, typically empty beverage cans, assembled and used for temporary storage, temporary emergency shelters, toys, or other uses involving inexpensive and light weight building materials. The system is implemented by... | 12/19/2000 |
| 6050043 | Apparatus and method for supporting concrete beams, walls and the like A completely closed and reinforced box-like structure for forming a void area in a concrete formation is constructed of a flat sheet that is scored with a plurality of parallel crease lines and features a side edge reinforcing panel. The reinforcing panel... | 04/18/2000 |
| 5816009 | Stress steering structure A load bearing structure having a set of uniform voids functions to resolve the forces imposed by developing compression in the material having the voids and minimizing the amount of tension developed in the material. The voids are deployed to encompass a... | 10/06/1998 |
| 5782049 | Two-part collapsible corrugated paper form void A two-part collapsible form void for providing a space between a poured concrete structure and an underlying expansive soil is formed of a foldable outer section and a foldable inner section which, when erected, is longitudinally slidable into the erected... | 07/21/1998 |
| 5778625 | Recessed lighting fixture and method of installing A recessed lighting fixture includes a back housing which is secured to a form board for receiving poured concrete such that the concrete sets around the housing to form a recessed area in a concrete structure. The form board is joined to a stiffener plat... | 07/14/1998 |
| 5643402 | Method and device for pressing injection material into the joints between concrete bodies The invention concerns a device for introducing sealing material into at least one tubular injection element (12, 13), such as a hose and/or channel, in a concrete joint-sealing system, the injection element joining forming a sealant-injection path in the... | 07/01/1997 |
| 5634311 | Drainage conduit A device for stabilizing footing drainage conduits while forming the footings including an annular disk and a cylindrical hub extending outwardly from and about the opening. A drain tile or conduit is engaged with the device about the hub while the device... | 06/03/1997 |
| 5615528 | Stress steering structure A load bearing structure having a set of uniform voids functions to resolve the forces imposed by developing compression in the material having the voids and minimizing the amount of tension developed in the material. For the voids to have this function, ... | 04/01/1997 |
| 5496213 | Foundation vent A foundation vent (20) for use with concrete forms (31 ) includes two frames that telescope together into a plurality of locking positions to allow the width of the vent to be changed to match the thickness of the concrete wall. The first frame (26) inclu... | 03/05/1996 |
| 5444947 | Foundation vent A foundation vent (20) for use with concrete forms (31) is disclosed. The vent includes two frames that telescope together into a plurality of locking positions to allow the width of the vent to be changed to match the thickness of the concrete wall. The ... | 08/29/1995 |
| 5396747 | Plane hollow reinforced concrete floors with two-dimensional structure A plane, hollow, reinforced concrete floor slabs with two-dimensional structure and method for their production. Constructions developed by this technic will vary widely and with considerable profit replace conventional floor structures. The technique mak... | 03/14/1995 |
| 5386675 | Concrete beam connection sleeve A concrete beam connector sleeve has a tubular plastic body with a large dimensional end portion, a funnel portion joining the end portion, a rod guide portion joining the funnel portion, a bolting step joining the rod guide portion and a large dimension ... | 02/07/1995 |
| 5377469 | Sealing device for concrete joints and process for the introducing of a sealing medium into sealing devices A sealing device for sealing a joint disposed between two concreting sections, having an impermeable profile preferably fabricated from a synthetic material and cosntructed in a hood form to be open in cross section. The profile is mounted with the free l... | 01/03/1995 |
| 5347786 | Reusable concrete spacer sleeve A reusable concrete spacer sleeve comprises a substantially cylindrical body having a plurality of inwardly extending fins. The sleeve is placed over a vertical drain pipe prior to pouring a concrete floor. After the concrete has set, the sleeve is remove... | 09/20/1994 |
| 5249401 | Sealing device for concrete joints and process for the introducing of a sealing medium into sealing devices A sealing device for sealing a joint disposed between two concreting sections, having an impermeable profile preferably fabricated from a synthetic material and cosntructed in a hood form to be open in cross section. The profile is mounted with the free l... | 10/05/1993 |
| 5245806 | Concrete beam conduit guide A concrete beam conduit guide includes a hollow open ended prismatic body with a downwardly sloping roof, an upward sloping floor, sidewalls and seal flanges at the open ends of the body.... | 09/21/1993 |
| 5182885 | Extendable wall sleeves A one-piece, unitary, molded resin wall sleeve precursor has two cup-shaped end sections of external diameter D1 each having a hollow transition section of enlarged diameter that connects the end section to a sleeve of internal diameter D1; one transition... | 02/02/1993 |
| 5129147 | Sluice gate or penstock door A penstock or sluice gate door constructed by providing a stack of steel tubes (11) preferably of rectangular cross-section, which are stitch welded together at (12). There are added welded side plates (13), a central stainless steel spindle (14) and bolt... | 07/14/1992 |
| 5088253 | Method and apparatus for housing and waste disposal A house can be formed of tires by securing tires in a panel and using the panel to form a wall of a house or other structure.... | 02/18/1992 |
| 5072911 | Barrier mold for forming openings in concrete structures Concrete barrier structures for use in forming holes in concrete slabs or the like can be constructed so as to include a peripheral wall shaped as the frustum of a right circular cone having an upper end and a lower end. A closure is provided to close off... | 12/17/1991 |
| 5027571 | Frame for leading lines through a structural part Disclosed herein is a plastic frame for leading lines through an opening in a structural part, such as a wall. The frame has a cavity defined by two C-shaped elements having inner flanges which are perpendicular to the plane of the frame, and outer flange... | 07/02/1991 |
| 4888925 | Fire-retardant fluid coupling assembly and method A pipe coupling assembly (10, 46, 64) and method of manufacturing the same involves the use of a pipe coupling (12, 50, 66) with an intumescent collar (14, 68) and a metallic band (16, 56, 70) wrapped thereabout at one end thereof. The metallic band has o... | 12/26/1989 |
| 4831803 | Foundation form work A building foundation form work arrangement in which a plurality of boxes 1 are located on a supporting level surface and are kept apart to leave channels 4 between the boxes 1, and spacers 22 engaging respective sides of each of the corners of the boxes ... | 05/23/1989 |
| 4827690 | Cardboard building structure and method A cardboard structural member for use in the construction of building panels and a method of making same. The structural cardboard member comprises an elongated hollow channel member of rectangular cross-section formed of corrugated cardboard sheeting. Th... | 05/09/1989 |
| 4788809 | Building foundation A method of forming a foundation having intersecting beams and floor portions, comprises leveling the ground on which the foundation is to be located. A plurality of inverted hollow members are positioned in rows. The hollow members are separated by space... | 12/06/1988 |
