Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 4303373 | Device for generating a curtain of high velocity gas A blower device for producing a flat, sheet-like stream of air or gas is disclosed. An elongated, tubular body having one end closed and a slot opening along its length is supplied with air or gas under pressure at its other open end. A flat nozzle sectio... | 12/01/1981 |
| 4221538 | Rotary transducers A rotary transducer adapted to be driven in the same direction by air flow therethrough in either axial direction comprises a rotor having blades of aerofoil cross-section which are fixed with their planes of zero lift normal to the axis of the rotor. An ... | 09/09/1980 |
| 4182596 | Discharge housing assembly for a vane axial fan A vane axial fan assembly includes a housing defining a chamber to receive a fluid discharged from the blades of the vane axial fan. The housing includes a substantially spiral shaped scroll portion defining a chamber of substantially constantly increasin... | 01/08/1980 |
| 4182595 | Discharge assembly for an axial flow compressor A discharge assembly for an axial flow compressor which places a diffuser which extends radially outwardly and axially outwardly adjacent the last row of rotatable blades to efficiently convert the swirl energy of the fluid into pressure energy without ut... | 01/08/1980 |
| 4173995 | Recirculation barrier for a heat transfer system A heat exchanger apparatus for a liquid-cooled internal combustion engine including a radiator axially spaced from the engine, an engine-driven, suction-type fan axially spaced intermediate the engine and the radiator for drawing cooling air axially throu... | 11/13/1979 |
| 4153385 | Self-drawing centrifugal pump A self-drawing centrifugal pump having a distributor with asymmetrical blades thereon and at least one inflow or recirculation opening therein. Flaps or the like are arranged on the distributor and serve to close off the channels during the suction phase ... | 05/08/1979 |
| 4123197 | Fan with air directing grille A clutch mechanism suitable for connecting a rotatable member to an output shaft of a motor, which mechanism comprises a body which is attachable to the output shaft and a resilient arm, one end of which is fixed to the body the other end of which is capa... | 10/31/1978 |
| 4120615 | Box fans A box fan comprising a box-like structure containing an electric motor and a fan blade assembly operable by the motor, which structure consists of a front section and a rear section forming a box having front and rear openings which are interconnected to ... | 10/17/1978 |
| 4102597 | Ventilating suction and exhaust fan device of plate type A ventilating suction and exhaust fan device of Plate type comprising a casing of cylindrical shape, a partition plate mounted within the casing and extending in a horizontal plane passing through a central axis of the casing and having a rectangular open... | 07/25/1978 |
| 4102596 | Ventilating suction and exhaust fan device of sirocco type A ventilating suction and exhaust fan device of Sirocco type comprising a casing of cylindrical shape, a partition plate mounted within the casing and extending in a horizontal plane passing through a central axis of the casing and having a rectangular op... | 07/25/1978 |
| 4082478 | Vacuum cleaner fan A vacuum cleaner apparatus having a fan housing defining a plurality of corner portions and a wall structure extending across the housing and defining with the housing corner portions flow restricting air flow passages for conducting air from the fan impe... | 04/04/1978 |
| 4080096 | Fluid pump impeller An axial flow pump structure utilizing an impeller of improved design, constituting essentially a propeller blade delivering forces to the fluid either gaseous or liquid being pumped in both axial and centrifugal modes. The blade is an evolute wherein the... | 03/21/1978 |
| 4021135 | Wind turbine A wind turbine including a reaction type turbine wheel instead of an impulse type turbine which is normally used for receiving the wind and more efficiently deriving power therefrom and an augmenter means for producing a vortex downstream of the turbine a... | 05/03/1977 |
| 4017206 | Winnowing blower for combine harvester-thresher A winnowing blower for discharging a stream of air over the sieve of a combine harvester-thresher has an axially elongated housing formed at each of its axial ends with an inlet opening provided with an axial-flow fan. A shaft passing axially through the ... | 04/12/1977 |
| 4013378 | Axial flow turbine exhaust hood An axial flow turbine incorporating an exhaust hood for receiving exhaust steam from the turbine and directing this exhaust steam through a discharge opening in the hood in a direction essentially normal to the axis of the turbine is disclosed. The exhaus... | 03/22/1977 |
| 3995432 | Collector A toroidal shaped collector with a radial inlet and a single discharge outlet includes a pair of substantially parallel spaced baffle plates extending from the inlet partway into the collector chamber, disposed in the plane of the collector and serves to ... | 12/07/1976 |
| 3977311 | Louver fan assembly Louver fan assembly including a housing for mounting a fan at an angle in line with the slats of the louver. The invention also provides an improved design of louver for use with the housing and fan.... | 08/31/1976 |
| 3976392 | Pump drive shaft sealing arrangement A circulation pump having a comparatively slender drive shaft is provided with an improved axial sealing arrangement to prevent the leakage of circulating liquid through the bore in the pump housing wall in which the drive shaft is supported. The sealing ... | 08/24/1976 |
| 3966355 | Steam turbine extraction system An extraction system for extracting steam from the blade path of an axial flow turbine apparatus in a circumferentially uniform manner. Steam is extracted through an extraction orifice having a circumferentially-varying throat portion, the throat communic... | 06/29/1976 |
