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"I hate what they've done to my child...I would never let my own children watch it. "
Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
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| Number | Title | Issue Date |
| 7114873 | Adaptive security and protective barriers and traffic control speed bumps A method for at least slowing a vehicle moving along a surface is provided. The method including; providing one or more panels capable of extending above the surface; and deploying the one or more panels from the surface into a position extended from the surface. | 10/03/2006 |
| 7111827 | Energy-absorption system To reduce the danger of bodily harm to occupants of vehicles that leave a roadway, a guardrail system includes an energy-absorption system is provided. The energy-absorption system including a cutting mechanism positioned to cut a guardrail section upon impact by a ... | 09/26/2006 |
| 7004674 | Pre-fabricated warped pavement slab, forming and pavement systems, and methods for installing and making same A pre-fabricated warped pavement slab and a forming system for making the slabs. The forming system includes a plurality of forming sections which can be adjusted so as to form a warped-plane pavement slab. Also disclosed are methods for making the pavement slab and... | 02/28/2006 |
| 6942419 | Grate assembly A preferred drainage system grate assembly (10) broadly comprises a grate (12), a frame (14) to support the grate (12), and a locking device (34) to hold the grate (12) within the frame (14). The grate (12) com... | 09/13/2005 |
| 6505820 | Guardrail terminal To reduce the danger of bodily harm to occupants of vehicles that leave the roadway, a guardrail system includes a guardrail terminal and a guardrail. The guardrail terminal includes cutting members positioned to cut said guardrail as guardrail moves with... | 01/14/2003 |
| 6022003 | Guardrail cutting terminal To reduce the danger of bodily harm to occupants of vehicles that leave the roadway, a guardrail system includes a guardrail terminal and a guardrail. The guardrail terminal includes cutting means positioned to cut said guardrail as guardrail moves within... | 02/08/2000 |
| 5595370 | Texas gate The Texas gate includes a base frame adapted to be set into a roadway and a deck assembly secured to said base frame. The deck assembly includes a series of spaced parallel elongated deck members arranged in groups. First and second groups of said deck me... | 01/21/1997 |
| 5419537 | Pop-up stock guard A portable cattle guard is provided which includes an assembled rectangularly shaped base member. Contained within the confines of the base member are a pair of inclined cattle ramps movably connected along their longitudinal axis to a smaller, spring bia... | 05/30/1995 |
| 5203544 | Cattle guard The disclosed cattle guard includes a base and grills which may easily be removed for cleaning without disturbing the adjacent roadway. The cattle guard includes side wings which are attached to the base to ease the removal of the grills. In a further asp... | 04/20/1993 |
| 5160120 | Self retracting portable cattle guard A self retracting portable cattle guard (100) for connection between the gate posts (50, 50') in a gate opening and including a spring loaded reel mechanism (110) secured to one post (50) and provided with a flexible grid (120) having a cross bar (15) equ... | 11/03/1992 |
| 5131631 | Portable pitless livestock gate A portable pitless livestock barrier whereby vehicles or humans may easily gain access to a livestock enclosure but provides a deterrent to the unwanted passage of the livestock from such enclosure. The barrier is provided by having a horizontal main fram... | 07/21/1992 |
| 4789137 | Knock-down cattle guard An elongated structure is provided including a pair of opposite end transverse end members and a plurality of laterally spaced apart and longitudinally extending bar members extending between and supported atop corresponding longitudinally spaced portions... | 12/06/1988 |
| 4655435 | Cattle guard A cattle guard has a grid with a plurality of spaced bars lying transverse to the direction of travel across the guard. The bars are supported by a plurality of spaced beams lying beneath the bars. The grid, in turn, is supported by a base in the ground. ... | 04/07/1987 |
| 4609184 | Pivoted gravity return fence extension for cattle guard A fence line is provided including a pair of spaced posts between which a fence opening is defined and wherein a cattle guard is substantially centered in the opening and spans considerably less than the width of the opening. A pair of edge upstanding pan... | 09/02/1986 |
| 4434975 | Armored cattle guard A pre-cast concrete cattle guard having longitudinally extending rails and transversely extending beams. The upper edges of selected rails are armored with a protective metal cap which is securely anchored in the rails.... | 03/06/1984 |
| 4428562 | Stock grid A monolithic concrete stock grid including a planar base portion, a plurality of triangular cross-sectional ribs extending across the base portion and parallel to each other to define a plurality of open-ended troughs extending across the base portion and... | 01/31/1984 |
| 4387882 | Cattle guard construction and method A cattle guard for highways and other thoroughfares, as an extension of a fence line to prevent cattle from crossing into forbidden areas, is made up of concrete slab sections faced with sheet steel and placed end-to-end across the thoroughfare. The sheet... | 06/14/1983 |
| 4163545 | Cattle guard A cattle guard having a plurality of substantially parallel, longitudinally extending rails arranged on and transversely of a plurality of substantially parallel, longitudinally extending support beams. The rails are prevented from rocking on the support ... | 08/07/1979 |
