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 |
| 8033077 | Starting platform wedge anchor assembly An anchor for a rectangular tube employs a wedge assembly, whereby rotation of an adjustment bolt of the wedge assembly moves an upper and lower wedge member together, and the wedge engagement with a central wedge member causes said central wedge member to move towa... | 10/11/2011 |
| 7520101 | Attachment of building elements A device for affixing a building element to a supporting element, comprising a guide housing for attachment to the building element or the supporting element. Mounted in the guide housing are at least one movable telescopic member and at least one pull-out cable whi... | 04/21/2009 |
| 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 |
| 7162837 | Structural member stabilizing system A bracket connects a structural member to a structural element to stabilize the structural member against movement. The bracket includes connector portions for connecting the bracket to tensioned stabilizing cables or other structural stabilizing elements and one or... | 01/16/2007 |
| 7137227 | Structural brace A structural brace apparatus and method provides support between a primary building component and a secondary building component, the primary building component having X and Y axis deflections relative to the secondary building component. The brace includes a first ... | 11/21/2006 |
| 6929424 | Rock bolt and method of use A rock bolt comprising an elongated bar and an elongated deformable member, with a threaded nut to reduce the distance between the respective ends of the deformable member so as to deform at least part of the member away from the bar. The threaded nut may be located... | 08/16/2005 |
| 6519903 | Device for fixing plates, in particular glass plates An attachment device for panes of glass. The attachment device includes retainers arranged between each pane and a support structure. The retainers include structures to compensate for the dimensional differences, deformations and displacements between th... | 02/18/2003 |
| 6502359 | Dowel placement apparatus for concrete slabs An expendable concrete dowel placement apparatus comprising a concrete form and a dowel holder capable of quickly positioning a dowel perpendicular to the surface of the concrete form, thereby allowing the finished concrete slab to expand and contract rel... | 01/07/2003 |
| 6131359 | Stiffening clips for floor joists and method for using the same A spacer clip for securing side-by-side joists and a method for using such clips is provided. The spacer clip, constructed from sheet metal or a rigid composite includes a bridging section and a pair of legs that extend transversely to the bridging sectio... | 10/17/2000 |
| 5746029 | Tile roof structure for supporting a heavy load without damage to the tile An apparatus for supporting a heavy load above a tile roof without causing damage to tile members, comprising: an elongated base member adapted to lie upon the surface of the roof underneath a tile member; a lag bolt for securing the the base member to a ... | 05/05/1998 |
| 5469675 | Anchoring piece, in particular for concrete An anchoring piece for hardenable material such as concrete or plaster, comprising a grasping shank and a base of larger cross-section than that of the shank. The base (3) includes at least one support strip (5) whose top is hollowed out and intended to h... | 11/28/1995 |
| 5409193 | Insulated concrete wall tie system Apparatus for in situ attachment of insulation panels to poured concrete walls as the walls are formed. Preferably, polymeric F-shaped strips are attached to novel tie bars by transverse retainers, and receive the edges of insulation panels to hold them a... | 04/25/1995 |
| 5283999 | Prefabricated panel for building construction A concrete panel is provided having a threaded cylindrical concrete insert imbedded therein for receipt of a bolt. Preferably, the concrete inserts are imbedded in each corner of the panel. The inserts have an opening on at least one end thereof for recei... | 02/08/1994 |
| 5226829 | Underground stake device An improved stake device is provided which is capable of prolonged or even permanent ground position and location in a manner which is completely submerged below ground level at all times. The stake device allows for engaging and holding a securement line... | 07/13/1993 |
| 5226265 | Apparatus and method for lifting tilt-up wall constructions An improved insert anchor assembly which provides a lifting clevis is disclosed. A novel void former comprising a body and plug to completely surround the lifting clevis is also disclosed. An improved hoisting attachment capable of complimentable receipt ... | 07/13/1993 |
| 5218795 | Concrete panels, concrete decks, parts thereof, and apparatus and methods for their fabrication and use Concrete panels for making concrete decks or floors for spanning between structural supports; parts of such panels including shear connectors, thread formers, and resilient grout seals; tools for manipulating grout-seals; co-acting forms for making panels... | 06/15/1993 |
| 5212920 | Strongback attachment system for concrete panel tilt-up construction A fastener system for temporarily securing a reinforcing beam or the like to a poured concrete structural member includes an anchor to be set in poured concrete with an exposed handle portion free of said concrete, and a shaft with a slotted end for recei... | 05/25/1993 |
| 5094047 | Apparatus and method for lifting tilt-up wall constructions An improved insert anchor assembly which provides a lifting clevis is disclosed. A novel void former comprising a body and plug to completely surround the lifting clevis is also disclosed. An improved hoisting attachment capable of complimentable receipt ... | 03/10/1992 |
| 4945704 | Concrete anchor and method of attaching elements to concrete slabs A cup-shaped anchor is provided which has a large pullout resistance because it translates vertical pullout force placed on the anchor into lateral stress within the concrete slab. Preferably, the anchor is frustoconical and provided with two pairs of opp... | 08/07/1990 |
| 4580378 | Anchor assembly for tilt-up wall section An anchor assembly for use in raising tilt-up wall sections which are cast in a horizontal position. The assembly includes an elongated steel anchor member supported in a vertical position on a base. A horizontal steel pin extends through an opening in th... | 04/08/1986 |
| 4443980 | Pulling iron enclosure A pulling iron enclosure is provided for recessing a pulling iron in a wall of an underground vault. The enclosure is defined by a base and a removable cover. The enclosure has a cavity therein with the cover overlying one side of the cavity. A wall of th... | 04/24/1984 |
| 4124959 | Clothes drier socket A socket comprises a pair of L shaped sheet metal members which interlock to form a square tube, the walls having surfaces which define at least one pair of bayonet slots, each having an entry limb and a retaining limb. The clothes drier standard has a ba... | 11/14/1978 |
| 3972077 | Swimming pool rope anchor A rope anchor is disclosed for use on a metal wall at the periphery of a swimming pool. The anchor comprises an assembly of a one-piece molded anchor body, an anchor link and a pin. The anchor body has a front flange surrounding an opening which leads to ... | 08/03/1976 |
