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 |
| 4244417 | Flexible door wiper seal This invention relates to a sealing device for flexible closures for building openings, especially aircraft hangars, gymnasiums, etc. The device comprises elongate flexible sealing gaskets located alongside and substantially coextensive with each of the v... | 01/13/1981 |
| 4244418 | Apparatus for forming vacuum-sealed mould An apparatus for forming a sprue and a communication hole in a vacuum-sealed mould. This method includes steps of: laying a shield film over a pattern and a sprue forming pattern or a communication hole forming pattern; assembling the pattern with a mould... | 01/13/1981 |
| 4244419 | Electromagnetic stirring apparatus An electromagnetic stirring apparatus for stirring the liquid center core of a continuous casting. The casting is supported by and transported over guide rolls while a changing electromagnetic field is induced within the liquid casting core by induction c... | 01/13/1981 |
| 4244420 | Apparatus for feeding a horizontal continuous casting mold A combined feed tube and continuous casting mould comprises a copper mould having a refractory feed tube projecting into the inlet end of the mould passage. The feed tube is in abutting relation with the wall of the mould passage and the material from whi... | 01/13/1981 |
| 4244421 | Process and an apparatus for cooling of waste gas bends Process of cooling waste gas bend and apparatus for carrying out same, said process comprising removing concentrated heat at said bend by feeding coolant at an adjustable pressure through cooling channels longitudinally disposed along a selected sector of... | 01/13/1981 |
| 4244422 | Method and device for defrosting heat exchanger without impairment of its heat exchange efficiency Method and device for defrosting or deicing heat exchangers of the type in which a stream of warm, moist gas, such as warm, used ventilating air--so-called exhaust air--exchanges heat with a cooler medium, such as incoming fresh air, in a contact apparatu... | 01/13/1981 |
| 4244423 | Heat exchanger A heat exchanger comprising an elongated tubular cylindrical member having fluid ingress and egress openings adjacent to its opposite ends and external flanges at opposite ends one of which flanges has a counterbore facing in the direction away from the c... | 01/13/1981 |
| 4244424 | Magnetic casing depth marker A magnetic casing depth marker which includes a plurality of axially upper and lower magnets dispersed circumferentially about the exterior of the casing. Each magnet has radially inner and outer faces that are magnetized such that the inner face is of on... | 01/13/1981 |
| 4244425 | Low density ball sealers for use in well treatment fluid diversions A ball sealer for use as a diverting agent when treating a well having a perforated casing. The ball sealer is sized to plug a perforation and has a density less than the treating fluid. The ball sealer comprises a material, such as syntactic foam or poly... | 01/13/1981 |
| 4244426 | Fire-fighting apparatus A fire-fighting apparatus particularly for homes comprising a cabinet having a door affording access to a water hose, operating valve and fire extinguisher in the cabinet. The cabinet is divided into three compartments, the first containing a fire hose, t... | 01/13/1981 |
| 4244427 | Tiller with rotatable tines and guiding handle A rear tined tiller having a guiding handle which is readily adjustable vertically and laterally and wherein adjustment of the guiding handle position may be controlled by a handle position control lever attached to the free end of the guiding handle and ... | 01/13/1981 |
| 4244428 | Tool bar wing fold restraining mechanism A folding tool bar with hollow main and wing sections (12, 21, 22) incorporates restraining links (111, 112), disposed within the hollow main section (12) when the wing sections (21, 22) are lowered to their working positions, which not only serve to limi... | 01/13/1981 |
| 4244429 | Mounting mechanism for angle dozer blade A dozer blade mounting for a dozer frame having a dozer blade movably supported thereon includes at least one rigid link that has one end pivoted on the vehicle frame and the opposite end pivoted on the dozer frame with fluid ram means associated with the... | 01/13/1981 |
| 4244430 | Earth boring bit packed lubrication system A rolling cone cutter earth boring bit is provided with an improved lubrication system including an eccentric bearing surface and spaces for lubricant. At least one cantilevered bearing pin extends from the arm of the bit. A rolling cone cutter is rotatab... | 01/13/1981 |
| 4244431 | Drilling apparatus with dual drill pipe and cross-over Apparatus is disclosed for drilling a pilot hole and subsequently enlarging the pilot hole in earth formation. A dual concentric pipe string is used for circulating air downwardly through the outer pipe via a cross-over sub, through a pilot bit and upward... | 01/13/1981 |
| 4244432 | Earth-boring drill bits The invention relates to the design of earth bore-hole drill bits employing shaped preform cutters containing hard abrasive materials, such as diamonds, the cutters being mounted in companion preformed sockets in a hard metal bit matrix.... | 01/13/1981 |
| 4244433 | Safety mechanism for a raise drill A raise bit is disclosed for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations surrounding the pilot hole. The raise bit includes a removable drive stem for enabling the raise bit to be transported through small dri... | 01/13/1981 |
| 4244434 | Electronically indicating torque wrench An electronically indicating torque wrench utilizes a variable frequency stress transducer to detect the level of torque applied by the wrench. The stress transducer is operatively coupled to an arm of the wrench, said arm having a mechanical stress that ... | 01/13/1981 |
| 4244435 | Direct drive for a motor vehicle A straight drive shaft type engine mounted transversely of a vehicle is provided with a centrally bored drive shaft surrounding a wheel axle having a wheel connected with its respective remote ends. A primary clutch moves a friction disk slip-spline mount... | 01/13/1981 |
| 4244436 | Vehicle with power driven ski A power driven ski vehicle of the ski bob kind is driven by a power ski having a pair of running surfaces on the undersides of the power ski for sliding engagement with the snow and for supporting a substantial portion of th weight of the vehicle and ride... | 01/13/1981 |
| 4244437 | Apparatus for generating waves in the ground A mobile generator for producing waves for seismic exploration. An elongated boom guides a wave-generating hammer along a linear path of motion to strike an anvil embedded in the ground, the boom being movable between several adjusted positions including ... | 01/13/1981 |
| 4244438 | Encased internal combustion engine, in particular for an automobile An internal combustion engine for an automobile is encased in a sound-insulating casing and is mounted on a frame of the automobile via sound-proofing suspensions. The wall of the casing extends around the suspensions, at which point the casing is support... | 01/13/1981 |
| 4244439 | Sound-absorbing structure A sound-absorbing structure comprising a plurality of linear and parallel grooves in the surface of the structure and ribs between the grooves. The structure is employed to damp, in a semi-space which is delimited by a substantially plane surface, e.g. a ... | 01/13/1981 |
| 4244440 | Apparatus for suppressing internally generated gas turbine engine low frequency noise A method and apparatus for suppressing internally generated gas turbine engine low frequency noise is disclosed. The apparatus is comprised of means for structuring the cross-sectional area of the gas flow path into one or more open elements of a predeter... | 01/13/1981 |
| 4244441 | Broad band acoustic attenuator A broad band acoustic attenuator particularly useful for attenuating gas turbine engine noise utilizes a plurality of axially extending, open-ended, perforated cylinders concentrically arranged within the exhaust duct of the gas turbine engine for attenua... | 01/13/1981 |
| 4244442 | Method and apparatus for treating exhaust gases particularly for air-operated tools A muffler construction, particularly for exhaust gases of air-operated tools, comprises, a tubular sleeve having a passage therethrough, an exhaust gas pipe connected into the sleeve and defining a restricted flow passage with the sleeve, first and second... | 01/13/1981 |
| 4244443 | Drawer type emergency escape A drawer type emergency escape is constituted by a stowage box attached to a support, a slidable frame normally received in the stowage box and extended out of the stowage box as the escape is employed, and a shift mechanism for pulling the slidable frame... | 01/13/1981 |
| 4244444 | Walking stepladder A walking stepladder has a pair of substantially identical ladder sides, relatively hinged at the top, each side having step rungs for ascent or descent of the ladder from either side. In walking the ladder, the user straddles the ladder top with his legs... | 01/13/1981 |
| 4244445 | Support platform for vertical poles or trees An apparatus is provided for use on substantially vertical poles comprising two sections which cooperate in ascending and descending said vertical poles, comprising (a) an upper section comprising a seat member having a handle member attached thereto; a g... | 01/13/1981 |
| 4244446 | Adjustable ladder support A ladder support for imparting lateral stability to a ladder includes a C-shaped channel member for each side leg of the ladder. A first shoe member is slidably received and lockable longitudinally within each channel and is pivotally connected to a brace... | 01/13/1981 |
| 4244447 | Mobile power crane-excavator with open gear greasing The engine of a mobile power crane-excavator is utilized as a source of heat to soften grease so that it may be applied to the open gears on the machine, even at low ambient temperatures. Heated water from the vehicle engine is caused to flow in heat tran... | 01/13/1981 |
| 4244448 | Article consolidation system A consolidation system for articles including a continuous track with a continuous chain supported from the track and movable in a horizontal direction around the track. Horizontally spaced and vertically extending baskets are suspended from the chain wit... | 01/13/1981 |
| 4244449 | Tensioning device for tensioning of hydraulic hoses on telescopic lift mast assemblies Tensioning device for tensioning of hydraulic flexible tubes on telescopic lift mast assemblies of fork lift trucks with the flexible tubes being turned-around over a pulley which is rotatably mounted on the stationary outer upright and an additional pull... | 01/13/1981 |
| 4244450 | Group supervisory system of elevator cars A group supervisory system of elevator cars is provided which has a waiting time estimating function for estimating the waiting time at each floor and a waiting time evaluating function for giving a predetermined weight to the output of the estimating fun... | 01/13/1981 |
| 4244451 | Disc brake and pin assembly therefor A disc brake assembly provides a torque member which is juxtaposed with a rotor for the purpose of movably supporting a caliper. The caliper cooperates with a pair of friction elements to urge the latter into engagement with the rotor during a brake appli... | 01/13/1981 |
| 4244452 | Suitcase with rollers A suitcase which includes two shells and at least two rollers disposed in housings provided in the outer face of the shells, so as to project outwardly wherein each roller is disposed in its housing between two complementary members forming an added box, ... | 01/13/1981 |
| 4244453 | Garment cover, hanger and carrier with removable container for accessories, etc. A garment cover, hanger, carrier, and removable accessory container encloses suits, coats, capes, dresses, and other lengthy wearing apparel in a protecting bag or container which is generally of the type comprising rectangular sacks of proper length to a... | 01/13/1981 |
| 4244454 | Cone clutch A cone clutch mechanism has its forward and reverse clutch gears supported by bearings mounted on the housing, with a main shaft supported by bearings mounted on the housing in the same planes as the forward and reverse gear bearings. The male cone member... | 01/13/1981 |
| 4244455 | Rotary shaft decoupling mechanism A rotary power transmitting shaft decoupling device has a driving component xially aligned with a driven component and keyed thereto by a plurality of force transmitting elements held in operable relation to the driving and driven components, respectively,... | 01/13/1981 |
| 4244456 | Ejected roller shaft disconnect mechanism A rotary power transmitting shaft decoupling device has a driving element sposed coaxially within a driven element and keyed thereto by a plurality of rollers held in aligned grooves and slots of the driving and driven elements, respectively, by an indexi... | 01/13/1981 |
