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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 |
| 7287404 | Security device for a threaded element A security device for engaging an threaded element includes an inner body configured to engage the threaded element and an outer body operatively coupled to the inner body. A lock is configured to engage the outer body and is operable such that the outer body moves ... | 10/30/2007 |
| 7100888 | Interlocking control handle An interlocking control valve which can be used to control the flow of fluids such as water and gas. The control valve features a push button on the end of a handle which permits the interlocking valve to engage the valve stem when the push button is pressed. A fixe... | 09/05/2006 |
| 6901950 | Fire hydrant locking device Fire hydrant locking devices prevent fire hydrants from being turned on without a key. A fire hydrant has a keyhole in its sidewall. A security bolt is threadedly inserted into the keyhole with one end frictionally engaging with the valve stem in the interior of the... | 06/07/2005 |
| 6871518 | Gas system component inlet or outlet connection retaining bracket A removable retaining bracket that prevents removal of a connection fitting from a gas distribution system component is described. The retaining bracket has a base that defines an opening that accepts the connection fitting and prevents removal of the fitting from t... | 03/29/2005 |
| 6802338 | Fire hydrant securing arrangements A fire hydrant securing arrangement utilizes a magnetic detent to couple an outer body to a center post so that when a wrench with a permanent magnet is mated with the outer body, the magnetic detent connects the outer body to the center post. The center post has an... | 10/12/2004 |
| 6634195 | Locking button for semi-tractor pneumatics An anti-theft device for preventing unauthorized release of the air brakes on a vehicle includes a lockable button for the valve stem for the control valve. The lockable button includes a button body, a coupling member, and a lock assembly having a latch ... | 10/21/2003 |
| 6089253 | Fire hydrant security systems A fire hydrant security system for mounting on a standpipe of a fire hydrant wherein the hydrant has a mounting surface with holes therethrough and a bonnet mounted on the mounting surface, the bonnet surrounding a valve operating spindle assembly. The sy... | 07/18/2000 |
| 5596893 | Devices for securing fire hydrant valves A magnetic security device for preventing unauthorized opening of fire hydrant valves includes an inner cylindrical member which is fixed to a nut on the valve stem and an outer rotatable member which is coupled to the inner cylindrical member by a magnet... | 01/28/1997 |
| 5515703 | Motorcycle anti-theft fuel lock A fuel line valve locking assembly for a motorcycle that is in fluid communication with a main tank inlet, a reserve tank inlet and an outlet and which selectively locks a fuel supply line valve closed, open to the main tank inlet, or open to the reserve ... | 05/14/1996 |
| 5046523 | Lock core service valve A rotary plug valve is disclosed having a housing and a valve core which can be selectively locked in an unlimited number of positions relative to the mandatory inlet and outlet piping, said valve having no visible indication of the internally concealed l... | 09/10/1991 |
| 4946130 | Flow control device A flow control device for use in a fluid or gas line is disclosed. In one example, the device controls the flow of air to the brakes of a large vehicle such as a semi-trailer truck. The device includes a housing having an inlet port and an outlet port bot... | 08/07/1990 |
| 4928506 | Anti-theft locking valve for motor vehicles An anti-theft tamper-proof lock valve for automobile applications for securing the fuel line or the hydraulic brake line to prevent theft having a manually-operated lock in communication with a slide valve positioned in the fluid line, the slide valve sel... | 05/29/1990 |
| 4765362 | Anti-theft system for vehicles A system for installation in mechanized vehicles which have an hydraulic brake system prevents the unauthorized operation of such vehicles and includes a valve of a special construction which comprises a housing provided with inlet ports and outlet ports ... | 08/23/1988 |
| 4723569 | Lock mechanisms A lock mechanism for a rotatable stub such as the operating shaft of a fluid flow control valve has a main body 10 connected to a drive member 12 adapted for mounting on the rotatable stub. A locking sleeve 17 is adapted to fit closely to the machine (e.g... | 02/09/1988 |
| 4699168 | Theft-resistant valve A removable key operated locking device for a rotary valve includes a locking member having a tip having a selected diameter connected by a throat having a smaller diameter to a body portion which may have a slightly larger diameter than the tip portion a... | 10/13/1987 |
| 4471801 | Adjustable valve locking system An adjustable valve locking system for valves in which the axial position of a spindle which carries a valve element is dependent upon rotation of an actuating mechanism. Such a locking system includes an annular member surrounding the valve spindle and r... | 09/18/1984 |
| 4460153 | Lever operator for a valve control and actuating mechanism A lever operator for use primarily with valves of the plug type in which a tapered plug is raised to unseat associated slips and then rotated to a valve open position during opening of the valve and is rotated to a valve close position and lowered to seat... | 07/17/1984 |
| 4402339 | Lockable valve for hydraulic system A lockable valve in a hydraulic system comprising a valve body, a cylinder, a piston in the cylinder, and an inlet port and two outlet ports, one of the outlet ports leading to a bypass line and the other of the outlet ports leading to an operational hydr... | 09/06/1983 |
| 4024740 | Locking hood assembly for flow control device Locking hood assembly for mounting on a gas service head valve of the lubricated plug type to prevent unauthorized opening of the valve. Locking hood assembly comprises a generally cylindrical main body or hood which covers the valve stem and stop collar ... | 05/24/1977 |
