Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7448426 | Failsafe door closing device of a fire proof rolling door A power-off door closing device of fire proof rolling door in which the rolling door slides down to close by its own weight under abnormal power-off condition by brake-releasing action or by brake-applied action of a braking pin actuated by a energized solenoid, thr... | 11/11/2008 |
| 7311130 | Controlled drive for a garage door panel for the like The invention relates to a system to control the motor drive of a garage door panel which is reciprocatingly movable and guided along a predetermined track between two end positions, and possibly, one or more intermediate stop positions, said garage door panel inclu... | 12/25/2007 |
| 7299847 | Fire door control system and method A fire door control system permits user input during regular use and during alarm conditions. The system utilizes primary and secondary power sources and incorporates a variety of preventive safeguards assuring that functionality of the fire door control system will... | 11/27/2007 |
| 7293805 | Safety door central release device This invention relates to a type of safety door central release device which can be used to close the safety door automatically when electric power is disrupted. It comprises a cord that is tied to a mechanism having potential energy on one end, and extended to a fa... | 11/13/2007 |
| 7263802 | Barrier movement operator having service reminders An electronic service reminder to automatically notify a user as to when and what type of maintenance should be performed on the garage door operator, based on a variety of factors, including time, materials and operating environment. The garage door operator is con... | 09/04/2007 |
| 7254868 | winding and anti-drop assembly for door counterbalance system A counterbalance system (25) for a door (D) movable between a closed position and an open position having an axle (20), a cable drum (15) attached to the axle, a winding shaft (35) interconnected with the axle by a counterbalance spring (... | 08/14/2007 |
| 7242162 | Apparatus and method for retracting awning An apparatus and method for retracting an awning. A sensor detects an awning acceleration caused by wind impacting the awning, and generates a signal having an amplitude corresponding thereto. When the signal exceeds a certain threshold, the awning is retracted. The... | 07/10/2007 |
| 7228797 | Cordless blind A cordless blind includes a headrail, a bottom rail suspended from the headrail by a first cord and a second cord, a wall covering disposed between the headrail and the bottom rail, and a drive actuator. The drive actuator includes a spring motor, a spool coupled to... | 06/12/2007 |
| 7144051 | Method and apparatus for providing for fail safe condition for an automatic security gate A method and apparatus for locking a security gate operating shaft contained in a security gate operating mechanism having a housing from which extends the operating shaft, which may comprise: a locking collar, having at least one engageable protrusion extending rad... | 12/05/2006 |
| 7138912 | Movable barrier operations method and apparatus Movement of a movable barrier (10) such as, for example, a vertically-dropping fire door, can be controlled in an informed manner and with greater flexibility regarding the manner of movement via, in one embodiment, use of a motor (20) as a generator t... | 11/21/2006 |
| 7114291 | Overhead door drop stop A door drop stop safety system which is adapted to be installed on existing building overhead doors which employ a central axle; slab doors, bifold doors, and rollup doors which contains structure for raising and lowering the the door including a rewind box includin... | 10/03/2006 |
| 7086441 | Hydraulic governor device for use with a rotational shaft, and door assembly including the same A hydraulic governor device for use with a rotational shaft of a door assembly for controlling a rotation of said rotational shaft. The device includes a sleeve; first and second end coverings mounted respectively onto first and second ends of the sleeve so as to de... | 08/08/2006 |
| 7025107 | One-way tensioning mechanism for cordless blind A cordless blind comprising a headrail, a bottom rail suspended from the headrail by a first cord and a second cord. A window covering disposed between the headrail and the bottom rail, a drive actuator including a spring motor and a spool for accumulating the cords... | 04/11/2006 |
| 7000668 | System and method for sealing openings in response to smoke, noxious fumes, or contaminated air using a roll-down barrier A system and method for rapidly and reliably sealing off a selected opening from the passage of smoke, noxious fumes, or contaminated air includes a powered clutch and viscous governor that provides a fail-safe mode of operation. A curtain is positioned in a housing... | 02/21/2006 |
| 6981538 | Positional control device for sectional doors A positional control device is provided to prevent accidental drifting of an overhead sectional door upward or downward from a fully opened, partly opened or fully closed position. The device allows the door to be manually moved to a different elevation without requ... | 01/03/2006 |
| 6924730 | Fire door control system and method including periodic system testing A fire door control system permits user input during regular use and during alarm conditions. The system utilizes primary and secondary power sources and incorporates a variety of preventive safeguards assuring that functionality of the fire door control system will... | 08/02/2005 |
| 6732018 | Awning assembly and control system This invention relates to a retractable and extendable awning and control system for automatically extending and retracting the awning. A front of an awning fabric is attached to a front bar, movably mounted on a wall of a building by retractable arms. A rear of the... | 05/04/2004 |
| 6596983 | Perimetric detection system and automated container Systems and elements are disclosed for creating a continuous, collimated detection zone for an automatically-actuated device or container, such as an automatic waste container, wherein the detection zone can be made to match the opening periphery of the c... | 07/22/2003 |
| 6484784 | Door controlling device A door, such as a fire door or a security gate, for blocking a throughway or opening in an exterior or interior wall of a building, such as a doorway or countertop window, has an open position and a closed position. A force, such as gravity, a counter wei... | 11/26/2002 |
| 6484069 | Awning assembly and control system This invention relates to a retractable and extendable awning and a control system for automatically extending and retracting the awning. In a retractable fabric awning a front of the awning fabric is attached to a movable front bar, movably mounted at th... | 11/19/2002 |
| 6189960 | Vehicle with a sunroof When a rollover of a vehicle body is detected by a rollover detection sensor, an inflator is operated. When the inflator is operated, an air bag connected to the inflator through a hose is inflated by a gas ejected from the inflator, downwardly pushes ope... | 02/20/2001 |
| 6024156 | Curtain drawing apparatus A fully automatic motor driven curtain drawing apparatus which is of a simple, but highly reliable design and one which can be easily adjusted to accommodate windows of widely differing sizes. They can be opened either manually or by an electric motor whi... | 02/15/2000 |
| 5983971 | Reinforced burglar- and storm-resistant cover for windows and doors A burglar- and weather-resistant cover for an opening such as a door or window. The cover includes a pair of opposed and generally parallel tracks with an upper housing extending therebetween. A plurality of louvers are generally parallel and connected to... | 11/16/1999 |
| 5896907 | Rolling fire door including a door hold-open/release system A rolling fire door includes a door hold-open/release system that includes an electromagnet which is energized by a controller when the door is in the open position. The energized electromagnet magnetically attracts a bottom bar of the rolling door to sec... | 04/27/1999 |
| 5893234 | Time delay release mechanism for a fire barrier A time delay release mechanism has a brake actuator including an actuation member movable between engaged and released positions. The actuation member, when in the engaged position, operatively engages a fire barrier for preventing closure thereof. The ac... | 04/13/1999 |
| 5855027 | Automatic bathroom door and toilet flushing system A new automatic bathroom door and toilet flushing system for automatically raising the door and flushing the toilet when a user is finished. The system includes a housing secured to a ceiling between a pair of walls. The housing has an opening in a lower ... | 01/05/1999 |
| 5675487 | System for controlling energy through window Energy control system for a window comprises fenestration blinds, horizontal or vertical, disposed at the window and adjustable in angle to control solar radiation entering the window. First and second photovoltaic sensors are disposed proximate respectiv... | 10/07/1997 |
| 5577541 | Rolling door assembly having pass door arrangement A rolling door assembly for selectively covering an opening in a building includes a shutter roller rotatable about a substantially horizontal axis and a flexible panel windable on and off the roller for movement into retracted and extended conditions, re... | 11/26/1996 |
| 5576581 | Door control system and release mechanism Fire control systems and release mechanisms. The release mechanisms of the present invention comprise a digital logic circuit for processing signals which are indicative of a condition in an outside environment, and for providing a trigger that will actua... | 11/19/1996 |
| 5542460 | Self-closing fire door The present invention is provided with a mechanism for controlling the opening and closing of a door comprising a speed reduction means for reducing a rotational speed. A high speed shaft is connected to the speed reduction means and is connectable to a m... | 08/06/1996 |
| 5511601 | Drive mechanism for venetian blinds A drive mechanism can spin a vertical adjustment rod of a venetian blind mounted at a window. The mechanism has a case adapted to be mounted at the window. A power driver is mounted in the case and is adapted to be coupled to the adjustment rod. This driv... | 04/30/1996 |
| 5482103 | Door apparatus with release assembly A closure apparatus for closing an opening in a partition with a frame disposed around the opening includes a drum member rotatably mounted to the partition at the top end of the opening. It also includes a curtain member secured to the drum member. The c... | 01/09/1996 |
| 5413161 | Solar powered window shade A solar powered window shade is provided which consists of a venetian blind mounted within an interior of a frame of a window in a wall of a building. An apparatus is carried by the venetian blind, for converting solar radiation of sunlight into electrica... | 05/09/1995 |
| 5386891 | Mechanism for controlling the raising and lowering of a door A mechanism for controlling the raising and lowering of a door comprising a speed reduction gearing, a high speed input shaft and a low speed output shaft connected to the gearing, and a governor mounted on the input shaft for regulating the input shaft's... | 02/07/1995 |
| 5355927 | Self-closing fire door The present invention is provided with a mechanism for controlling the opening and closing of a door comprising a speed reduction means for reducing a rotational speed. A high speed shaft is connected to the speed reduction means and is connectable to a m... | 10/18/1994 |
| 5263527 | Fire door release mechanism A fire door release mechanism includes a pair of levers engaging a bearing disc to hold a toothed clutch in engagement between a shaft of the fire door and a shaft of its operator. One of the levers has, at its end remote from the bearing disc, a pin on w... | 11/23/1993 |
| 5253693 | Hold and release mechanism for a fire door spring tension adjusting wheel A hold and release mechanism for a fire door spring tension adjusting wheel includes a finger which is retractable when the adjusting wheel is rotated in a direction to increase the tension of the door spring but remains in engagement with a notch on the ... | 10/19/1993 |
| 5245879 | Fail-safe fire door release mechanism having automatic reset A resettable fail-safe fire door release mechanism which allows normal powered operation of a fire door is disclosed. A solenoid having a first open state in the absence of an applied electric current and a second closed state in the presence of an applie... | 09/21/1993 |
| 5225748 | Method and apparatus for controlling and monitoring the position of an awning or similar facility It is proposed that the utilization period of the awning be increased in connection with automatic or manual manual control means in that the awning is preferably incrementally retracted as a function of the magnitude of the wind velocity, as determined t... | 07/06/1993 |
| 5203392 | Mechanism for controlling the raising and lowering of a door A mechanism for controlling the raising and lowering of a door comprises a speed reduction gearing, a high speed input shaft and a low speed output shaft connected to the gearing, a governor mounted on the input shaft for regulating the input shaft's rota... | 04/20/1993 |
