Bizarre Patents
Dining Table Having Integral Dishwasher
A space-saving dishwasher, which may be installed within a counter top or table, having a dish-carrying rack that is vertically shiftable through the open top of the dishwasher for facilitating loading and unloading of the dishes.
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| Number | Title | Issue Date |
| 7055306 | Combined stage single shaft turbofan engine A turbofan engine includes a combined stage rotor mounted for common rotation with a shaft, a compressor stage, and a turbine stage. Each of the plurality of fan blades of the combined stage rotor are contiguous with a respective compressor blade. The combined stage... | 06/06/2006 |
| 6548913 | Apparatus for generating power using wind energy An apparatus for generating power using wind energy, including connecting shafts arranged around a boss and rotatably supported by the boss, pinions each fitted around the associated connecting shaft to rotate along with the associated connecting shaft, r... | 04/15/2003 |
| 6276898 | Variable pitch marine propeller A variable-pitch marine propeller system has a propeller unit for mounting on a drive shaft, and a power unit including a stationary annular hydraulic cylinder for operating the propeller unit, a hydraulic remote control unit being fluid-coupled to the po... | 08/21/2001 |
| 5967753 | Controllable-pitch propeller, especially for sport boats and other watercraft A controllable-pitch propeller for a sport-type watercraft has a push rod eccentrically connected to each blade displaceable in a bore of the propeller hub. The push rod is sealed with respect to the end of that bore by a multifold bellows whose radial fl... | 10/19/1999 |
| 5967750 | Variable pitch marine propeller A variable-pitch marine propeller system has a propeller unit for mounting on a drive shaft, and a power unit including a stationary annular hydraulic cylinder for operating the propeller unit, a hydraulic remote control unit being fluid-coupled to the po... | 10/19/1999 |
| 5762474 | Variable-pitch propeller assembly enabling pitch reversal during operation A propeller unit, each blade (1) being fixed to a blade foot (2) rendered integral with a hub (3) rotating around an axis but mobile with respect to the hub on translation in the direction of the axis and rotating around a second axis orthogonal to the fi... | 06/09/1998 |
| 5527154 | Variable pitch boat prop A variable pitch boat prop includes a hub fixed to the prop shaft, a sleeve surrounding the hub and having bearings which receive stub shafts from a plurality of blades. The stub shafts pivot in the bearings, so that the blade pitch can change. Pinion tee... | 06/18/1996 |
| 4964822 | Variable pitch propeller for watercraft A watercraft has a hull and a hollow support body secured below the hull. A propeller drive shaft is disposed rotatably in the body with one end extending out of the body and is adapted for connection to a driving engine. A main bearing for the drive shaf... | 10/23/1990 |
| 4657484 | Blade pitch varying means Blade pitch varying means for use in a gas turbine engine are disclosed. The blade pitch varying means may be used on an engine with a single row or two counterrotating rows of variable pitch blades which are disposed outwardly from an annular gas flowpat... | 04/14/1987 |
| 4648847 | Adjusting mechanism for variable pitch watercraft propellers A mechanical linkage for adjusting propeller blades includes a two-armed lever arranged on the downstream side of the hub of a variable pitch propeller driven by a driving engine by means of a drive shaft. The push rod of a linear motor connected to an en... | 03/10/1987 |
| 4364711 | Folding boat propeller A boat propeller with foldable blades, a so-called folding propeller, in which the mounting axes of the blades in the hub are inclined towards the rotational axis of the hub, so that the blades are movable between their folded and unfolded positions by ro... | 12/21/1982 |
| 4332526 | Variable pitch propellers A variable pitch propeller e.g. for light aircraft has blades which are mounted in a hub for rotation about their longitudinal axes. The ends of the blades entering the hub have a crown of peripheral teeth meshing with axially slidable racks located at th... | 06/01/1982 |
| 4242049 | Foldable propeller A foldable boat propeller comprising a hub to which the propeller blades are pivotally connected and which has two mutually turnable portions, one of which is fixedly secured to the propeller shaft and has a cam surface whereas the other one carries the p... | 12/30/1980 |
| 4231317 | Boat propeller device The invention relates to a boat propeller having rotatably journalled blades in its hub to enable shifting between forward and reverse without reversing the direction of rotation. The hub is rotatably journalled on the propeller shaft and contains a trans... | 11/04/1980 |
| 4179241 | Full feathering, reversible pitch, constant RPM propeller A pitch change slide is mounted for longitudinal movement on a propeller shaft hub adapter in turn secured to the engine shaft of an aircraft engine, the said slide carrying a plurality of toothed racks each engaged with a spur gear on the base of one of ... | 12/18/1979 |
| 4086025 | Propellers with retractable blades The present invention relates to a propeller with retractable blades arranged on a hub, said hub being limitedly rotatable in relation to the propeller drive shaft, each of said blades being pivotable between an outward working position and an inward inac... | 04/25/1978 |
| 3958897 | Variable pitch propeller A variable pitch propeller assembly having a shaft mounted in a housing and operably connectable to a rotary power source. A means mounted on the shaft has a propeller blade pivotally mounted therewith. The blade has a stem portion pivotally mounted in th... | 05/25/1976 |
