Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7331148 | Stud for concrete forms and forms using such studs A concrete form comprises cross members, plywood, and metal studs. The studs include a front wall, a rear wall, and a pair of side walls, the walls arranged to form a generally rectangular cross-section. A pair of inner walls extends between and perpendicular to the... | 02/19/2008 |
| 7331560 | Concrete form systems A system for holding poured concrete in a desired shape until it sets is disclosed. The system can include a plurality of forms having two opposing end sections. Each of the end sections has an end bracket attached to it. A plurality of footing stakes are used to co... | 02/19/2008 |
| 7290749 | Concrete form systems with concrete ties A system for holding poured concrete in a desired shape until it sets is disclosed. The system can include a plurality of forms having two opposing end sections. Each of the end sections has an end bracket attached to it. A plurality of footing stakes are used to co... | 11/06/2007 |
| 7174681 | Concrete from stake system with self-sealing plug Method and apparatus for securing a building foundation form disposed on a moisture barrier membrane. The method includes the steps of positioning one end of a concrete form stake in a mating structure of a plug, penetrating the moisture barrier membrane with a tip ... | 02/13/2007 |
| 6962316 | Concrete forming panel with lightweight frame A concrete forming panel with lightweight siderail includes a face plate and a frame, the frame including at least one siderail and a bushing plate coupled thereto, the bushing plate having thereon a wear member of a material having greater hardness than the bushing... | 11/08/2005 |
| 6918567 | Concrete panel with gripping ribs and method of use A concrete forming panel and its method of use is provided wherein the forming panel has a face plate including a frame, a front side and a back side, and one or a plurality of pairs of ribs which extend longitudinally along the back side. The pairs of ribs are prov... | 07/19/2005 |
| 6866239 | Concrete form assembly A form assembly for forming a concrete structure during drying of the concrete. The form assembly is formed of an elongated plastic form having a front wall for engaging the concrete and a rear wall. The front wall is spaced apart from the back wall to define a pock... | 03/15/2005 |
| 6742758 | Light-weight reinforced, tubular plastic footing form members and assemblies Lightweight, reinforced, non-biodegradable, tubular plastic footing form members and assemblies which may contain stake-engaging bores and/or are nailable to each other and/or to supporting stakes. The form members are water-repellant to resist absorbing and bonding... | 06/01/2004 |
| 6629681 | Flexible form assembly A flexible form assembly for forming concrete structures during setting of the concrete is provided. The flexible form assembly includes an elongated form having a front side for engaging the concrete and a rear side. The rear side includes a back wall di... | 10/07/2003 |
| 6367764 | Versatile threaded construction stake usable to anchor and/or support construction forms, including concrete slab foundation forming devices A stake suitable for use in construction is formed from an elongate threaded metal member, typically of length between 0.45 meter and 1.8 meter, having two ends. A first end region, tapered to a sharp point over typically 3 centimeters, is suitable to be ... | 04/09/2002 |
| 6021994 | Flexible concrete form A flexible concrete form which can be arranged to provide both straight and curved configurations, and is adapted to flex both horizontally and vertically. The form includes a face panel and upper and lower flanges having lips on their back edges. An inte... | 02/08/2000 |
| 5817247 | Wall supporting A device 10 is provided for supporting a wall 11 of a form for containing concrete and like fluid materials. It comprises the following components and arrangements thereof relative to each other; and normally but not necessarily arranged as in FIG. 1 rela... | 10/06/1998 |
| 5261635 | Slab joint system and apparatus for joining concrete slabs in side-by-side relation A slab joint form structure for pouring of a concrete slab with a continuous shear joint including a pair of longitudinally superimposed edge forms, a flat slab joint shear bar positioned in a generally horizontal plane and lying longitudinally between th... | 11/16/1993 |
| 5154837 | Flexible form A flexible form is presented. The flexible form may be shaped to produce the desired contour of concrete or other plastic material in the construction of various structures and is held in place by a plurality of positioning brackets. The flexible form is ... | 10/13/1992 |
| 5015117 | Construction materials with end connectors End plastic connectors on the ends of two construction members like concrete forms. Each connector has a pair of bosses on opposite corners and a pair of openings in opposite corners so that the bosses on one connector mate with the openings in the other ... | 05/14/1991 |
| 4898358 | Form-work for concrete Concrete form-work includes: (a) an edge beam including an elongated edge plate having a front face and a rear face, a pair of web portions projecting outwardly from said rear face and a flange member joined to the free end of each web portion, each flang... | 02/06/1990 |
| 4776555 | Concrete forming device A concrete forming device made from plastic components which can be assembled in the location of use to form a desired shape and fastened to the ground with steel stakes driven through brackets attached to components. After use, the stakes are removed and... | 10/11/1988 |
| 4712764 | Flexible forms An elongated flexible form is disclosed. The elongated flexible form may be shaped to fit the contour of a concrete structure of variable shape and is held in position by a plurality of positioning brackets. The flexible form is made out of a flexible mat... | 12/15/1987 |
| 4659054 | Lightweight concrete form having a detachable equipment rail A concrete form includes a horizontal base and a vertical face joined to the base. Load bearing brackets are coupled at spaced apart intervals along the exterior side of the concrete form to loosely support a detachable equipment rail from below while mai... | 04/21/1987 |
| 4579312 | Flexible form An elongated flexible form is presented. The elongated flexible form may be shaped to fit the contour of a concrete structure of variable shape and is held in position by a plurality of positioning brackets. The flexible form is made out of a flexible mat... | 04/01/1986 |
| 4548005 | Structural foam swimming pool wall and brace and method of erecting same The specification discloses a pool wall assembly including first and second pool wall panels and a brace supporting the panels. Structure is included for securing the brace to only the first panel so that the first panel and brace may be aligned together ... | 10/22/1985 |
