Bizarre Patents
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 |
| 7748309 | Axle locking cylinder structure for heavy construction equipment An axle locking cylinder structure is capable of enabling an operator of heavy construction equipment to stably carry out an axle locking operation since a sudden variation of the flow rate is prevented in the axle locking cylinder by draining a highly-pressurized f... | 07/06/2010 |
| 7305808 | Packaging machine A packaging machine moves its heater unit for longitudinal sealing of a tubularly formed film between a sealing position at which the heater unit contacts the film and a retracted position at which it is separated from the film. In addition to the mechanism for this... | 12/11/2007 |
| 7263831 | Air-to-oil intensifying cylinder A pressure intensifier for generating a relatively large force includes a plurality of pistons driven in advancing and retracting directions. The pressure intensifier includes a rod selectively drivable into a cavity to amplify the force acting on one of the pistons... | 09/04/2007 |
| 7261030 | Method and system for improving stability of hydraulic systems with load sense A hydraulic circuit is disclosed that can include a flow control element, a pressure compensator connected via a pair of load sense lines to an inlet line and an outlet line, respectively, of a flow control element to provide a constant pressure drop across the flow... | 08/28/2007 |
| 7255257 | Pneumatically operated power tool having mechanism for changing compressed air pressure A pneumatically operated power tool such as a screw driver, a nail gun and an impact wrench those being driven by a pneumatic pressure. A pressure reduction valve is provided between a connector connected to a compressor and a compressed air chamber defined in an ou... | 08/14/2007 |
| 7152557 | Apparatus for adjusting an operational point of an engine An exhaust valve assembly may include a diaphragm connected to a restricting member. The diaphragm may be configured to change a position of the restricting member based on a pressure on a first side of the diaphragm. A spring may abut a second side of the diaphragm... | 12/26/2006 |
| 7150330 | Hydraulic circuit and method for operating a gripping device A hydraulic circuit and method for operating a gripping mechanism according to which fluid is passed from a source to the device while some of the fluid is passed to a valve that is adjustable to control the amount of fluid passed to it and therefore the amount of f... | 12/19/2006 |
| 7114747 | Work vehicle stabilizer A system for automatically moving a stabilizer of a work vehicle is disclosed. A joystick is connected to an electronic controller, which in turn, is connected to valve drivers to drive stabilizer raising and lowering valves. In one mode of operation, the controller... | 10/03/2006 |
| 7108324 | Vehicle seat adjuster A pneumatic seat adjuster for moving a vehicle seat relative to a floor of the vehicle includes a body having a bore formed therein. The body is adapted to be connected to one of a floor and a vehicle seat. A piston is slidably disposed in the bore of the body. The ... | 09/19/2006 |
| 7036421 | Driving device, particularly lifting device for a working vehicle The invention concerns a driving device, particularly a lifting device for a working vehicle, with a drive in the form of a hydraulic motor, the drive having a first connection and a second connection, a pump and a control valve arrangement between the drive and the... | 05/02/2006 |
| 7032499 | Hydraulic circuit and method for operating a sealing device A hydraulic circuit and method for operating a hydraulic device according to which fluid is passed from a source to the device while some of the fluid is passed to a valve that is adjustable to control the amount of fluid passed to it and therefore the amount of flu... | 04/25/2006 |
| 6975930 | Rate limiting control system A method of controlling an operation of a mechanism is provided. A first rate limit is assigned to a first input device that is operable to generate a first signal to control the operation of the mechanism. A second rate limit is assigned to a second input device th... | 12/13/2005 |
| 6952922 | Choke valve of clutch release cylinder A choke valve of the clutch release cylinder wherein the actuating oil is slowly discharged when the clutch pedal is released, and when the clutch pedal is depressed, resistance to the actuating oil is minimized for the actuating oil to be swiftly and smoothly suppl... | 10/11/2005 |
| 6619182 | Flow control device A flow control apparatus for a fluid cylinder for a workpiece holder includes a flow restricting member and a flexible sealing member. The flow restricting member defines a first passageway and a sealing surface. The flexible sealing member is positioned ... | 09/16/2003 |
| 6561076 | Differential configuration of remote hydraulic valve flow rates for extend and retract modes of operation A method of individually adjusting auxiliary hydraulic valves for work vehicles is provided such that they provide different maximum flow rates for opposite flow directions through the valve. The valve is controlled by a flow rate control for setting a ma... | 05/13/2003 |
| 6546839 | Flow regulation device The present invention relates to a flow regulation device for mitigating over travel of a piston in a fluid operated tool. The flow regulation device includes a flow channel through which flows an operating fluid to be supplied to operate the piston withi... | 04/15/2003 |
| 6536328 | Damper valve for hydraulic power-assisted steering system A damper valve (70) located between a control valve (18) and a power steering motor (22) in a hydraulic power-assisted steering system (10). The damper valve (70) comprises a housing (72) having axially opposite first and second end portions (76 and 78) a... | 03/25/2003 |
| 6467753 | Sealing joint and casing, especially for a stopcock actuator Stopcock actuator casing, comprising a base (1) having an underside and formed with a hole (2), the underside of the base being subdivided into at least three compartments (4,8,10), the first (4) of which surrounds the hole (2) and the second (8) and thir... | 10/22/2002 |
| 6450081 | Hydraulic system for controlling an attachment to a work machine such as thumb attachment used on an excavator A hydraulic control circuit for controlling the operation of an attachment or tool associated with a particular work machine wherein such circuit includes an actuator for controlling the operation of the attachment or tool, a control valve operable to con... | 09/17/2002 |
| 6389950 | Manually controlled lifting device with a pneumatic lift drive mechanism A manually controlled lifting device is provided including a pneumatic lifting drive, a lifting member, a load carrying means, a pressure source, a pressure line, a flow control device, a pneumatic pressure switch and a vent drive. The lifting member is a... | 05/21/2002 |
| 6378412 | Lifting cylinder unit for a lifting platform A lifting cylinder unit (1) has a plunger design, and includes a stationary rod tube (2) having a longitudinal axis (3), two axial end regions, and an outer surface (26). A rod head (4) is arranged in one of the axial end regions of the rod tube (2), the ... | 04/30/2002 |
| 6296015 | Speed controller with pilot check valve A speed controller has a pilot check valve having a first body which has a first fluid inlet/outlet port defined in an end thereof and a pilot port defined in an opposite end thereof. A flow control valve has a second body integral with the first body. A ... | 10/02/2001 |
| 6293180 | Speed controller with pilot check valve A speed controller has a pilot check valve having a first body which has a first fluid inlet/outlet port defined in an end thereof and a pilot port defined in an opposite end thereof. A flow control valve has a second body integral with the first body. A ... | 09/25/2001 |
| 6279451 | Air cylinder with cushion mechanism A small-sized and inexpensive air cylinder with a cushion mechanism having a simple structure is provided. Therefore, discharge outlets for discharging cushioning air are disposed in positions closer to ends of the stroke than the openings of the ports in... | 08/28/2001 |
| 6260467 | Hydraulic circuit providing plural swing rates in an earthworking construction machine A construction machine, e.g., a backhoe, has a chassis and a digging tool mounted for movement, e.g., swinging movement, with respect to such chassis. A machine hydraulic circuit includes a pump, a hydraulic actuator coupled to the tool for tool movement,... | 07/17/2001 |
| 6250201 | Throttle device for hydraulic adjustment devices in motor vehicles A throttle device for use with a hydraulic adjustment devices that have an input cylinder and an output cylinder and a hydraulic line filled with fluid connecting the output cylinder and the input cylinder, is arranged in the hydraulic line for establishi... | 06/26/2001 |
| 6164385 | Automatic depth control system and method An automatic depth control system is disclosed. The system includes a Console and remote Controller mounted in the tractor cab, power beyond Valving, and Depth Sensors, either ground contact or non-ground contact, mounted on the frame of the implement. Th... | 12/26/2000 |
| 6131610 | Speed controller with pilot check valve A speed controller has a pilot check valve having a first body which has a first fluid inlet/outlet port defined in an end thereof and a pilot port defined in an opposite end thereof. A flow control valve has a second body integral with the first body. A ... | 10/17/2000 |
| 6071096 | Pneumatic cylinder, in particular for actuating fume extraction valves in fume and heat extraction plants A pneumatic cylinder for actuating fume extraction valves in fume and heat extraction plants has a piston (2) that may be actuated from both sides with at least one working surface and that can be made to slide by pressurised air in a cylinder (1) with at... | 06/06/2000 |
| 5918528 | Fluid cylinder flow control A fluid flow control for controlling the speed of a piston in a fluid power cylinder is disclosed in which the flow control is located within the confines of the cylinder and includes a rotatable disk having tearshaped slots for communication of the exhau... | 07/06/1999 |
| 5915679 | Support element for securing a work piece on a supporting surface A support element for supporting or holding a work piece on a mounting surface, for example in a machine tool, has a support or pin movably mounted in a housing. The pin is moved into contact with a work piece by an airstream, held in work piece contact b... | 06/29/1999 |
| 5868161 | Damper valve In a damper valve for use in a steering damper arrangement of a motor vehicle having a hydrostatic displacement motor for operating the vehicle steering mechanism wherein hydraulic fluid lines extending between the hydraulic motor and a servo-valve includ... | 02/09/1999 |
| 5819783 | Modular 3-way valve with manual override, lockout, and internal sensors An apparatus selectively supplies a source of pressurized fluid to a load device and selectively exhausts pressurized fluid from the load device. The apparatus includes a first housing for defining a longitudinally extending aperture communicating through... | 10/13/1998 |
| 5690143 | Valve for power steering gear A valve for a motor vehicle power steering gear including a tubular valve body having a plurality of internal lands, a valve spool rotatable inside of the valve body having a plurality of external lands, and a plurality of metering flats on the external l... | 11/25/1997 |
| 5623861 | Pneumatic cylinder and control valve therefor A pneumatic cylinder, especially for a spot-welding machine, has a sleeve valve mounted on the piston rod. The sleeve valve provides a venting valve for dumping pressure from a return chamber at the end of the forward stroke, and a progressive restrictor ... | 04/29/1997 |
| 5465746 | Pneumatic circuit to provide different opening and closing speeds for a pneumatic operator A pneumatic circuit prolongs a pneumatic valve opening time using an accumulator with two quick exhaust type valves in series while providing a rapid valve closing time. This structure and method is self-contained and amenable to retrofit in existing inst... | 11/14/1995 |
| 5381828 | Slow starting valve A valve for slowly starting an actuator includes a block having an inlet port, an outlet port, and a passage providing communication between the inlet and outlet ports. A first valve body is disposed in the passage for selectively opening and closing the ... | 01/17/1995 |
| 5320135 | Flow compensator valve A flow compensator valve for use in a hydraulic system which includes a cylindrical body having inlet and outlet ports, and a slidable, spring-biased hollow piston insert disposed within a center bore of the body, which insert has a plurality of ports for... | 06/14/1994 |
| 5287885 | Hydraulic control system for weighing and two-way valve therefor A motion control system for hydraulically operated lifting devices. The system provides for the dynamic weighing of a loaded container by controllably directing hydraulic flow through a bypass chamber of a two-way valve. An analog output signal is generat... | 02/22/1994 |
| 5207059 | Hydraulic control system having poppet and spool type valves Hydraulic control systems are useful for controlling actuation of hydraulic motors. Some such systems use spool type valves while other systems use poppet type valves, both of which have their advantages and disadvantages. The present hydraulic control sy... | 05/04/1993 |
