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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7574826 | Emergency door opening actuator An emergency door opening actuator includes electrical switches that are at least one of normally open and normally closed. The electrical switches may be connected accordingly in parallel or in series to terminals of an overhead door operator. The terminals may cor... | 08/18/2009 |
| 7331302 | Quick close security door system A security door closure system for cruise ships and other similar public entrance points to prevent terrorist attack or ship take-over is needed. Cruise ship passenger and ship provisioning entrance gangplanks pass through large hydraulically operated shell doors. T... | 02/19/2008 |
| 7282073 | Method and system for generating hydrogen by dispensing solid and liquid fuel components Hydrogen is generated through the use of a fuel solution that is prepared using solid fuel component, e.g., a metal borohydride, and a liquid fuel component, e.g. water. Both of these components are dispensed in response to control signals. The solid fuel component ... | 10/16/2007 |
| 7178638 | Car door apparatus of elevator A car door apparatus of an elevator includes a pair of door panels, a door drive device, and a door-opening mechanism. The pair of door panels open and close a doorway of the car of the elevator. The door drive device drives the door panels to open and close the doo... | 02/20/2007 |
| 7171726 | Hinge construction and hinge actuator, in particular for a wing mirror of a motor vehicle A hinge construction comprising two hinge members provided with a guide track. The guide tracks of each of the hinge members comprise at least three substantially flat, circular segment-shaped track parts, which each extend between first and second track ends and wh... | 02/06/2007 |
| 7028431 | Fire-resistant door A fire-resistant, aluminum, cementitious-material-free, insulation-free door adapted to prevent the spread of fire and heat passing therethrough, consists of: a door frame, a door hingedly mounted on the door frame, the door having a bottom wall, a top wall, and sid... | 04/18/2006 |
| 6615544 | Fire-resistant door A fire-resistant, aluminum, cementitious-material-free, insulation-free door adapted to prevent the spread of fire and heat passing therethrough, consists of: a door frame; a door hingedly mounted on the door frame, the door having a bottom wall, a top wa... | 09/09/2003 |
| 6161348 | Drop-out fire vent A drop-out fire vent for a building has a plastic dome that softens and loses structural integrity with increasing temperature. However, the dome is prevented from dropping out by an internal trap door controlled by a fusible link that will release at a p... | 12/19/2000 |
| 6092334 | Door locking device for a door closer having a fire actuated mechanism for unlocking the door locking device A door locking device for locking a door in predetermined, opened positions and automatically unlocking the door from the open positions in the event of a fire. The door locking device comprises a rotating body which includes channels and a support body w... | 07/25/2000 |
| 5794382 | Fire rated removable mullion A fire-rated removable mullion, includes a top fitting mounted to a door frame lintel, a bottom fitting assembly, a mullion head capable of detachably engaging the top fitting, a mullion tube having provisions for mounting between the mullion head and the... | 08/18/1998 |
| 5582472 | Solvent storage cabinet An improved storage cabinet is provided which is particularly suitable for the safe storage of flammable materials. An embodiment of the cabinet includes two side-by-side doors which close toward each other. Each door is self-closing, being biased in a cl... | 12/10/1996 |
| 5335451 | Insulated smoke doors for cooler/freezer applications A heavily insulated emergency smoke hatch door is equipped with an operating mechanism which is located external to a cooler and/or freezer. This external location of the operating mechanism provides for the accommodation of heavier weight doors without e... | 08/09/1994 |
| 5261186 | Fire door closure reset system A fire door closure reset system including a fire door movable between an opened position and a closed position relative to an opening through a wall; a lock for being pivotally attached relative to the wall for movement between a locked position and an u... | 11/16/1993 |
| 4648310 | Smoke ventilation apparatus and method An apparatus for controlling smoke in the event of a fire. The apparatus has a manual release arm pivotally secured to a base surface and a spring with one end attached to the base surface and the other end connected to the manual release arm. A releasing... | 03/10/1987 |
| 4555981 | Damper operator for use with air, smoke and fire dampers A damper operator for use with a damper having a frame and a damper blade pivotally associated with the frame, which damper operator comprises a drive rod; a pair of lever arms which are pivotally associated with each and which extend between the drive ro... | 12/03/1985 |
| 4531534 | Spring-powered actuator A spring-powered actuator especially for operating devices such as fire and/or smoke dampers, doors, hatches, vents, traps, valves and other devices having components which are movable between at least two positions. The spring-powered actuator of the inv... | 07/30/1985 |
| 4517765 | Remotely controllable vent door A motion transmitting remote control assembly of the type for transmitting motion in a curved path to open from a remote location at least one vent door which is held in a closed position by latches which engage the door, the assembly including core eleme... | 05/21/1985 |
| 4472999 | Damper operator for use with air, smoke and fire dampers A damper operator for use with a damper having a frame and a damper blade pivotally associated with the frame, which damper operator comprises a drive rod; a pair of lever arms which are pivotally associated with each and which extend between the drive ro... | 09/25/1984 |
| 4437693 | Thermally responsive latching device and method of modifying a latching device The invention comprises a latching and unlatching device for use on a door, or bulkhead, or the like, which device has a blocking plate for internally obstructing the latch to prevent its retraction, thereby to prevent the opening of the door. The blockin... | 03/20/1984 |
| 4372081 | Heat releasable window guard A window guard intended to safeguard a window of a dwelling and is constructed so that a portion thereof may be slidably moved away from its normal SAFEGUARD or UP position to provide an escape route for the inhabitants of the dwelling in the event of fir... | 02/08/1983 |
| 4195819 | Winch for handling an elevating dome shaped member of a building having a device enabling the instantaneous unlocking of the winch The locking device comprises a rod and cooperates, on the one hand, with a ratchet wheel fixed onto the winch drum and, on the other hand, with a flap comprising a spring and which is maintained in the lowered position by a breaking pane, destruction of s... | 04/01/1980 |
| 4112620 | Smoke and heat vent A new and improved smoke and heat vent including a frame assembly pivotally attached to a curb member adapted for placement on the roof of a building or the like. The frame assembly supports a dome-shaped cover and is movable between a closed, dome suppor... | 09/12/1978 |
| 4090437 | Opening-devices for smoke- and heat-vents Compact and autonomous device of high power for the opening of a smoke and heat vent, placed between the fix and the opening frame of the vent and composed of a fix arm forming the fix frame and a pivoting arm, the opening force being transmitted to the o... | 05/23/1978 |
| 4068417 | Fire vent A wall vent preferably for use in a high-rise building is releasably opened for venting a fire in the building. The vent comprises a frame, a window or venting panel that is pivotally for biasing the venting panel to an open position and latch means for m... | 01/17/1978 |
| 3983599 | Temperature actuated keying device for use in an automatic door closing mechanism A temperature actuated keying device for use in an automatic door closing mechanism which comprises a pair of thin, long plates for clamping members pivotally connected to each other at overlapping ends thereof by a pin so that both plates can be opened o... | 10/05/1976 |
