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 |
| 8186452 | Clamping systems and methods for piledriving A clamp system for an elongate member, comprising first and second clamp members, an actuator member, and an actuator system. The actuator member defines an actuator cam surface and is supported for movement between first and second actuator positions. The second cl... | 05/29/2012 |
| 8151901 | Impact device and method for generating stress pulse therein A pressure fluid operated impact device comprising a frame (2) whereto a tool (3) is mountable movably in its longitudinal direction, and control means (7) for controlling pressure fluid feed to the impact device (1), as well as a method ... | 04/10/2012 |
| 7950470 | Mechanical tee post driver A mechanical fence post driver for attachment to a lift arm of a standard front-loader which includes a mounting plate, guide tube, and roller latch assembly. The guide tube receives a tee or other fence post inserted therein such that it contacts the mounting plate... | 05/31/2011 |
| 7934567 | Driving apparatus for planting a shaft in a granular base A driving apparatus is disclosed for planting a vertically oriented shaft into a granular base. The driving apparatus includes an anvil integrally formed at an intermediate location on the shaft. A weight is attached on the shaft, above the anvil, in freely slidable... | 05/03/2011 |
| 7878263 | Pressure-fluid-operated percussion device A pressure-fluid-operated percussion device includes a frame allowing a tool to be arranged movably in its longitudinal direction. Pressure liquid is fed to the percussion device and returned to a pressure liquid tank. A stress pulse is produced in the tool utilizin... | 02/01/2011 |
| 7832497 | Shock dampening post driver A post driver having rotational handles and a dampening device adapted to isolate the hands and arms of the user from shock. ... | 11/16/2010 |
| 7694749 | Jackhammer with a lift assist The present invention relates to an integrated percussion power tool which contains a percussion mechanism and a lift assist mechanism to reduce the physical demands for its operation by facilitating the lifting and extracting of the percussion power tool. In genera... | 04/13/2010 |
| 7637327 | Percussive tool, in particular for surgical use The invention relates to a percussive tool having an oscillatory drive (3), the force of which is transmitted to a tool bit holder (25) by way of a drive member (17). Extending through the percussive tool is a longitudinal opening that allows a ... | 12/29/2009 |
| 7607491 | Jackhammer lift assist The present invention relates to a lift assist device which is used to alleviate the physical demands for the operation of a heavy percussion power tool, such as a pneumatic jackhammer, by facilitating lifting and freeing the percussion power tool. In general, the l... | 10/27/2009 |
| 7597156 | Mechanical tee post driver A mechanical fence post driver for attachment to a lift arm of a standard front-loader which includes a mounting plate, guide tube, and roller latch assembly. The guide tube receives a tee or other fence post inserted therein such that it contacts the mounting plate... | 10/06/2009 |
| 7413028 | Ramming device to be assigned to a rock breaker The ramming device comprises a ramming element to be assigned to the end of a rock breaker. The inventive device receives the shocks generated by the rock breaker and transmits them to fragments to be compacted. The ramming device also has a frame comprising: positi... | 08/19/2008 |
| 7410010 | Hydraulic impact mechanism A hydraulic impact mechanism includes a housing with a cylinder bore, a forward working chamber and a rear working chamber, a hydraulic fluid supply passage connected to the forward working chamber and a drain passage connected to the rear working chamber, a hammer ... | 08/12/2008 |
| 7407017 | Locking mechanism The present invention relates to a method of securing a shaft at any point along its substantially vertical axis of movement, wherein the method includes a locking device that is moveable with respect to the shaft. The method is characterised by the step of moving t... | 08/05/2008 |
| 7395883 | Keyed connection for drill bit A portion of a drilling tool having a drill bit driven in a rotating motion and in an axial percussion motion comprises a keyed connection between the drill bit and a driver sub that receives the drill bit. The keyed connection comprises a transverse member coupling... | 07/08/2008 |
| 7372247 | Apparatus and method for locating and marking an underground utility An apparatus and method to locate and mark the surface position of an underground utility while maneuvering along the path of the utility. The apparatus uses an underground utility detector that responds to the location of an underground utility to continually posit... | 05/13/2008 |
| 7341475 | Ground rod cap A ground rod cap is disclosed. The ground rod cap includes a crown portion and a support portion connected to the crown portion. The crown portion is configured to receive a ground rod. ... | 03/11/2008 |
| 7338233 | Soil nail and method of installing a subsurface support A subsurface support includes a soil nail of two-piece construction. The body of the soil nail is constructed of fiberglass. The tip of the soil nail is constructed of a machined metal piece that is secured to the distal end of the fiberglass body. The soil nail is ... | 03/04/2008 |
| 7325625 | Floor covering removal and impact tool An impact tool particularly useful for floor removal material includes an elongated removable rod having an upper end and a lower end. A handle is connected to the upper end of the rod, and an anvil is fixed to the lower end of the rod. A collar is mounted above the... | 02/05/2008 |
| 7325344 | Ground-mounted impact insertion and extraction apparatus An apparatus for impact insertion in and extraction from the ground includes a core with an upper section adapted for mounting a device, such as a sign, and a lower section with a pointed lower end. A reduced-diameter guide shaft extends between the upper and lower ... | 02/05/2008 |
| 7320490 | Impact handle for shovels and related hand tools An impact handle for a shovel and other tools to assist the user or laborer in digging and/or moving material such as dirt or snow, or other compacted materials. An impact handle with a shovel attachment would have similar physical features as generic shovels on the... | 01/22/2008 |
| 7314098 | Apparatus for driving and extracting stakes A hand-held tool having a motor, a vibration mechanism, and a stake-gripping device is disclosed for driving and extracting stakes or posts. The vibration mechanism generally comprises a housing surrounding a pair of geared eccentric plates or geared weighted plates... | 01/01/2008 |
| 7303027 | Grounding rod driving system A grounding rod driving system for facilitating installation and extraction of a grounding rod includes a sleeve slidably receiving a grounding rod. The sleeve slides along the grounding rod when the grounding rod is being driven into a support surface. A driver is ... | 12/04/2007 |
| 7299962 | Nail driving apparatus A nail driving apparatus for maintaining alignment of a nail with an object and driving the nail into the object includes an alignment tube being configured for slidably receiving the nail and maintaining a substantially perpendicular alignment of the nail with a su... | 11/27/2007 |
| 7296636 | Apparatus for driving fence posts and the like A post driver unit includes a frame having a quick connect attachment to a front end loader vehicle in place of a bucket or for connecting the unit to a tractor using a three point hitch. The frame supports a vertical mast for rotation on a vertical axis by fluid ac... | 11/20/2007 |
| 7293361 | Hand tool for chopping ice An ice chopper having a blade for initially engaging ice with a small force followed by an impact of a larger force to break up the ice. The ice chopper has a tube for a handle having a second tube inside with a compression spring. The second tube has a blade attach... | 11/13/2007 |
| 7234537 | Sonic drill A sonic drilling apparatus having a work piston within a cylinder chamber to provide a vibratory force through the alternate application of fluid under pressure into the bore above and below the piston in a manner that the piston will be forced to reciprocate within... | 06/26/2007 |
| 7226247 | Method and apparatus for creating soil or rock subsurface support A subsurface support includes a protective outer member that encases an interior support member. The inner support member may typically be a steel or iron rod which is held within the outer tube as by grout or cement. The outer tube is preferably emplaced by forcing... | 06/05/2007 |
| 7220273 | Control of airflow to an inflatable thermal device Airflow provided through an air hose to the inlet port of an inflatable thermal device is controlled by a mechanical device disposed at an end of the air hose that is coupled to the inlet port. In response to coupling the end of the air hose to the inlet port, the m... | 05/22/2007 |
| 7219382 | Multi-purpose tool A tool that can be assembled into multiple configurations for various uses. The tool includes at least two shafts that connect together, as well as multiple, interchangeable accessories that can be coupled to the shafts. Examples of some accessories include a stake,... | 05/22/2007 |
| 7207393 | Stepped drive shaft for a power tool A shaft comprises an input portion and a tang. The tang has a first section, a second section, and a radial bore. The second section is disposed between the first section and the input portion along an axis. A radial cross section of the first section is less than a... | 04/24/2007 |
| 7198081 | Log splitter A portably log splitter is provided. The log splitter comprises a base having a pair of one-piece side members, and a support member to which the one-piece side members are attached. The support member and the one-piece side members form a seat that is adapted to re... | 04/03/2007 |
| 7175141 | Removable sign support system A removable sign support system for supporting a sign on the ground includes a substantially upright support post, configured to removably receive a sign post. The support post has a substantially horizontal base affixed to its bottom end, with a plurality of spikes... | 02/13/2007 |
| 7172598 | Force specific impacting device An impacting device includes a hollow body and a movable member. The hollow body includes an inner chamber having an interior surface, the interior surface including at least one interference member extending radially inward therefrom. The hollow body also includes ... | 02/06/2007 |
| 7162783 | Forming elements from concrete pipe An apparatus for removing a forming element from a concrete pipe includes a support member and a removal device including first and second elements. The first element is attachable to the forming element and has a stop. The second element is supported by the support... | 01/16/2007 |
| 7152694 | Post driver A post driver is powered by a pair of hydraulic cylinders, one on either side of the hammer to provide a balanced lifting force to the hammer. A post retaining cap is formed to provide a recess for the post. The orientation of the driver may be controlled about a ho... | 12/26/2006 |
| 7124838 | Gripping assembly for impact hammer A gripping assembly mounted on an impact hammer having a longitudinally extending impact axis, the gripping assembly including a pair of opposed elongate gripping arms, having gripping end portions which may be extended and swung toward each other to grip material i... | 10/24/2006 |
| 7121357 | Method of inserting a grounding rod A method of inserting a grounding rod includes providing an elongated grounding rod that has an upper end and a lower end and also providing a hammer drill. An elongated tubular member has an open first end and an open second end. The tubular member includes a first... | 10/17/2006 |
| 7111690 | Manual slide post driver and extractor for âTâ-type metal or fiberglass or plastic posts A post driving device is disclosed. The post driving device slides to a desired position and is essentially locked in place through frictional force. As the post is driven into the ground, the device can be adjusted to a new position along the length of the post. | 09/26/2006 |
| 7111691 | Breaking hammer, and fastening element, side plate, and protective casing of breaking hammer A crushing hammer, and a fastening element, side plate, and protective casing for the crushing hammer. The crushing hammer comprises at least two alternative fastening elements with which it can be fastened to a boom of a work machine. The fastening can be done with... | 09/26/2006 |
| 7100475 | Nail holder A nail holder includes a handle having a working head with a cantilever that is bifurcated and sized to receive a nail. The nail holder also includes a magnetic element mounted at the working head. ... | 09/05/2006 |