Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7984873 | Retraction cylinder and rotorcraft undercarriage furnished with such a retraction cylinder A retraction cylinder (20) makes it possible to retract a leg (10) of a rotorcraft landing gear, the retraction cylinder (20) comprising a retraction chamber (33) and an extension chamber (34) separated by a head (26) of a p... | 07/26/2011 |
| 7810755 | Hydraulic distributor for airplane landing gear A hydraulic distributor 10 assembles in a single body an assembly of hydraulic components that assure the supply of actuators for controlling the movements of the moving elements of an airplane landing gear, for which the movements of the landing-gear legs an... | 10/12/2010 |
| 7426983 | Landing gear strut damper, and landing gear with independent struts comprising same A damper for an airplane landing gear leg comprises a main strut (11) and a rod piston (13) co-operating with the strut (11) to define a main chamber (15) and annular chamber (16) for hydraulic fluid, and presenting internally two ... | 09/23/2008 |
| 7364143 | Adjustable suspension fork A suspension front fork includes a lower tube with a closed bottom and an upper tube is movably inserted in the lower tube. Hydraulic oil is filled in the lower tube and has an oil level in the upper tube. A damper assembly is fixedly received in the upper tube and ... | 04/29/2008 |
| 7274310 | Aircraft landing gear kinetic energy monitor A system for use in monitoring, measuring, computing and displaying the Kinetic Energy generated and experienced while aircraft are executing either normal, overweight or hard landing events. Pressure sensors and motion sensors are mounted in relation to each of the... | 09/25/2007 |
| 7274309 | Aircraft landing gear initial touch-down velocity monitor A system for use in monitoring, measuring, computing and displaying the initial touch-down descent velocity experienced while aircraft are executing either normal, overweight or hard landing events. Pressure sensors and motion sensors are mounted in relation to each... | 09/25/2007 |
| 7249736 | Process for landing a tailless aircraft A process for landing a tailless aircraft having a nose, wings that produce lift, a nose landing gear with a shock strut, and main landing gear, comprises the steps of allowing the nose landing gear shock strut to compress after touchdown to a point where the nose o... | 07/31/2007 |
| 7216581 | Piston locking actuator A locking actuator may be locked in an extended position. A piston with a first and a second end defines a recess that originates proximate to the first end. A strut is adapted to at least partially nest within the recess and the strut is adapted to hold at least on... | 05/15/2007 |
| 7204456 | Landing gear having a gas vessel, and methods of maintaining such landing gear A landing gear includes a shock absorber having first and second elements slidable relative to each other, the slidable elements defining an inside volume which is filled in part with hydraulic fluid so as to leave a first chamber filled with gas under pressure and ... | 04/17/2007 |
| 7193530 | Aircraft landing gear automated inspection and life limitation escalation system and method A system for use in monitoring, measuring, computing and displaying the landing loads experienced while aircraft are executing either normal, overweight or hard landing events. Pressure sensors and motion sensors are mounted in relation to each of the landing gear s... | 03/20/2007 |
| 7175134 | Hydraulic damper for shimmy of aircraft landing gear A hydraulic system for steering an aircraft while taxiing selectively applies pressurized fluid to different ports of a hydraulic motor to turn a landing gear wheel either left or right. Shimmy of the landing gear attached to the wheel is dampened by a device that i... | 02/13/2007 |
| 7165951 | High-pressure generating device A high-pressure fluid is continuously generated with high efficiency without causing pulsation of pressure by reciprocally moving a piston having first, second and third chamber sections under the control of an actuator including an operating pressure source and a d... | 01/23/2007 |
| 7150450 | Vehicle suspension damper with integral height leveling valve An air spring suspension damper assembly includes a first housing and a second housing which telescope relative to each other. An actuating member such as a cable is connected to a height leveling valve contained in one of the housings and attached to the other hous... | 12/19/2006 |
| 6902176 | Steering knuckle and adjustable boss A multi-piece steering knuckle having at least one boss which is adjustable in position along an axis of a king pin. More particularly, a steering knuckle including at least one boss having a threaded surface for threading to a mating surface of a yoke arm, the thre... | 06/07/2005 |
| 6676076 | Two stage shock strut A shock strut for supporting and dampening a load with a two-phase dampening characteristic. The shock strut includes an inner cylinder slidably mounted within an outer cylinder, each of the cylinders having slidably mounted therein a piston. A first one ... | 01/13/2004 |
| 6474598 | Landing gear shock absorber with variable viscosity fluid An aircraft landing gear includes a sealed cylinder divided by a cylinder head to define an upper chamber and a lower chamber. The lower chamber is further divided by a piston having a piston rod passing in a sealed manner through the lower cylinder end. ... | 11/05/2002 |
| 6450448 | Airplane wheel unit A drive unit for a wheel of an airplane landing gear includes a pneumatic motor having a first impeller which is driven by pneumatic energy of compressed air and a second impeller which is turned by the expanded exhaust from the first impeller. These impe... | 09/17/2002 |
| 6311927 | Emergency landing gear extension system using pyrotechnic operated high pressure bottle A landing gear actuation system for deploying aircraft landing gear and associated doors includes a pressurized gas source, a first hydraulic circuit for actuating landing gear doors, a second hydraulic circuit for actuating landing gear, and valving for ... | 11/06/2001 |
| 6279854 | Combined damper and truck positioner for landing gear A combined hydraulic damper and truck positioner mechanism (20) for a landing gear (22) of an airplane. The landing gear being swingingly attached to the airplane for reciprocating movement of the landing gear between an extended position and a retracted ... | 08/28/2001 |
| 5992582 | Electrorheological rotary pure-shear damping devices An electrorheological damping device for reducing translational vibration between two bodies comprises a rotary electrorheological damper and transmission means for converting the translational vibration between the two bodies to the rotary motion of the ... | 11/30/1999 |
| 5984228 | Rapidly-convertible roadable aircraft A fixed wing aircraft that can be automatically and rapidly converted to a roadway vehicle within seconds while driving in the highway, comprising a one-piece wing rotatably mounted on top of the fuselage. The aircraft features a 3-horizontal-surface desi... | 11/16/1999 |
| 5944283 | Crashworthy landing gear shock A shock absorber, optionally operable as a retractable landing gear actuator, includes a sealed cylinder divided by a cylinder head to define an upper chamber and a lower chamber, the lower chamber further divided by a piston having a piston rod passing i... | 08/31/1999 |
| 5743491 | Very large aircraft landing gear having eight wheel truck Very large aircraft landing gear using single mounted eight wheel bogie on dual shock struts. A primary or main two-stage shock absorber and a semi-articulating secondary or auxiliary single-stage shock absorber, each of which are mounted using the second... | 04/28/1998 |
| 5521827 | On-board aircraft weighting and center of gravity determing apparatus and method An apparatus for determining the weight and/or center of gravity of an aircraft is disclosed and includes a plurality of fittings attached to each oleo strut on the aircraft for accessing the working fluid in the oleo strut, a computer, a first, electroni... | 05/28/1996 |
| 5460340 | Auxiliary control of aircraft landing gear movement Auxiliary control of extension, retraction and pivotal movement of aircraft landing gear when not in use is provided by a method of operation, apparatus for attaching to the landing gear, and an assembly comprising landing gear and apparatus. The apparatu... | 10/24/1995 |
| 5337976 | Raisable landing gear for heavier-than-air aircraft, in particular for helicopters The invention relates to raisable landing gear including a shock absorbing leg that is pivotally mounted, and to a driving actuator associated therewith. According to the invention, the leg is implemented in the form of two elements that are hinged to eac... | 08/16/1994 |
| 5330132 | Force-limiting device for an aircraft landing gear shock absorber, and a shock absorber including such a device The invention relates to a force-limiting device for aircraft landing gear shock absorbers, in particular for helicopters, and also to a shock absorber fitted with such a device. According to the invention, a box 201 is provided that forms a partition in ... | 07/19/1994 |
| 5310139 | Shock absorber for aircraft landing gear The invention relates to a shock absorber of the type comprising a cylinder and a sliding rod, together with a moving disk that defines a bottom hydraulic chamber that communicates via a diaphragm with a top hydraulic fluid chamber that is adjacent to a p... | 05/10/1994 |
| 5310140 | Shock absorber for an aircraft landing gear leg The invention relates to a shock absorber for a landing gear leg, the shock absorber being of the type comprising a cylinder and a sliding rod, and including a disk that delimits a lower hydraulic fluid chamber which communicates via a diaphragm with an u... | 05/10/1994 |
| 5294077 | Shock-absorbing actuator for fitting to landing gear of heavier-than-air aircraft, in particular helicopters The invention relates to a shock-absorbing actuator including a cylindrical body and a hollow rod having an annular piston. The cylindrical body includes a separator piston delimiting two hydraulic fluid chambers, one of which communicates via a distribut... | 03/15/1994 |
| 5279480 | Shock absorber for use in lowering aircraft landing gear The invention relates to a shock absorber comprising a main body and a rod-piston, with the rod-piston being retracted when the landing gear is down and extended when the landing gear is up. The main body comprises, in succession, three chambers that are ... | 01/18/1994 |
| 5271314 | Raisable anti-crash shock absorber The shock absorber comprises a strut, a sliding rod slidably mounted relative to the strut and co-operating therewith to define both a shock absorbing chamber and a raising chamber which is connected to a member for feeding it with raising liquid, a dip t... | 12/21/1993 |
| 5224668 | Torque linkage damper An aircraft landing gear damping mechanism improvement of a damper containing piston means in a chamber of a housing, an orifice in the piston means and Belleville springs disposed in the chamber between the wall of the chamber and the piston means on opp... | 07/06/1993 |
| 5158267 | Aircraft shock absorber A shock absorber of the invention comprises a strut, a inner cylinder fixed to the strut and extending inside the strut, and a sliding cylinder mounted to slide inside the strut and associated with the inner cylinder to communicate with the inside thereof... | 10/27/1992 |
| 5148896 | High pressure hydropneumatic shock absorber A high pressure hydropneumatic shock absorber (10) includes a cylinder (12) with a piston (16) slidably positioned within the cylinder (12). The piston (16) and cylinder (12) are configured as a telescopic suspension unit. The piston (16) defines a first ... | 09/22/1992 |
| 5094407 | Device for reducing the flexibility of an oleo-pneumatic shock absorber for an undercarriage, and shock absorber and undercarriage including it The invention relates to a device for reducing the damping flexibility of a suspension shock absorber for an undercarriage, in particular the main undercarriage of a helicopter, and a shock absorber and an undercarriage including it. The shock absorber is... | 03/10/1992 |
| 4886248 | Rapid extension shock absorber, in particular for carrier-based aircraft A shock absorber comprising a strut (1), a sliding rod (3) mounted to slide inside the strut, at least one gas chamber (13, 17) under pressure, an oil chamber (6) associated with the gas chamber, and an expansion chamber (5) connected to the oil chamber v... | 12/12/1989 |
| 4869444 | Adjustable two-stage aircraft landing gear system A two-stage aircraft gear. The landing gear includes a cantilever landing gear whose lower end is attached to a trailing arm (or articulated) landing gear. The cantilever gear is a collapsible piston-cylinder assembly, and the trailing arm gear also has a... | 09/26/1989 |
| 4834223 | Valve structure for telescopic hydraulic damper A telescopic hydraulic damper includes an outer tube filled with working oil, a pipe member mounted on the bottom of the outer tube, and an inner tube slidably disposed in the outer tube. A valve structure disposed in an inner end of the inner tube compri... | 05/30/1989 |
| 4821983 | Shock absorbing jack, a stay comprising it and landing gear equipped with such a stay The shock absorbing jack of the invention includes essentially a rod in which a sliding piston defines an extension chamber and which itself slides in a body by means of a piston defining a retraction chamber, the body including a throttling device and, o... | 04/18/1989 |
