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 |
| 4670103 | Fluid handling apparatus The invention provides fluid handling apparatus which may be heat exchange apparatus or fluid reaction apparatus. The apparatus is provided with an interrupter structure for disrupting the fluid boundary layers at the walls of the apparatus and promoting ... | 06/02/1987 |
| 4657667 | Particle classifier A particle classifier has a uniform, laminar, classifying air stream and a duct to introduce particulate material generally perpendicular to the air stream. The particulate material is entrained in a secondary air stream that is diverted as it enters the ... | 04/14/1987 |
| 4654200 | Processes for extracting radium from uranium mill tailings The removal of radium from acid-leached uranium mill tailings has been difficult due to its strong retention as mixed sulfates and in adsorbed forms. With this invention the leaching action of a complexing agent (reducing the free radium cation concentrat... | 03/31/1987 |
| 4650934 | Hand movement controller A hand movement controller is described which permits a variety of control functions to be performed by single left or right handed operation, and is particularly suitable for handicapped persons. The controller comprises a base which is generally wedge-s... | 03/17/1987 |
| 4649029 | Processes for extraction of uranium and radium from uranium-containing ores using ferric nitrate Ferric nitrate leaching at 75° C. is found to remove up to 97% of the uranium and 93% of the radium from ores occurring in the Elliot Lake area of Canada, after an initial flotation-separation of the sulfide minerals from the ore. In processes of the inv... | 03/10/1987 |
| 4640070 | Method of adding extra floors on existing buildings Methods of adding floors to an existing building structure without altering the exterior of the structure is described. One method involves providing additional foundations within the existing structure and supporting a plurality of internal columns upon ... | 02/03/1987 |
| 4638954 | Apparatus for the separation of mixtures of materials of different consistencies such as meat and bone Apparatus for the separation of mixtures of materials of different consistencies, such as meat and bone, or sewage containing solid material, comprises a positive displacement pump feeding the pressurized mixture to a separator which can be separate from ... | 01/27/1987 |
| 4636847 | Test apparatus The invention provides apparatus to inspect the colored insulation on wires placed in equipment to add contacts or to mould a termination on the wires. The apparatus ensures that the correct color relationships are present before crimping or moulding and ... | 01/13/1987 |
| 4636233 | Filter assembly A filter assembly includes a casing having a support panel to support the filter element and upstanding walls extending around the periphery of the casing. The corners between the walls are reinforced by a pair of tabs extending, each extending from a res... | 01/13/1987 |
| 4635828 | Liquid container dispensing cap structure A liquid dispenser is described which comprises a substantially airtight container for storing liquid to be dispensed with the container being formed with a downwardly-extending, constricted liquid passageway and a cap member with an open top in liquid-se... | 01/13/1987 |
| 4628365 | Radiation filter A filter to absorb spurious radiation from a video display terminal comprises a sheet of radiation absorbent material having an open woven mesh overlieing one surface of the material. The filter is mounted in the terminal so that the mesh faces the operat... | 12/09/1986 |
| 4627651 | Safety locking device for doors A door safety device consists of cooperating strike plate and face plate portions corresponding respectively to the strike plate and face plate of a conventional door lock or passage set. These portions are provided with apertures which when installed at ... | 12/09/1986 |
| 4624097 | Rope The invention provides a rope having a central strand and a plurality of outer strands extending helically about the central strand. Each of the outer strands consists of a plurality of elements in a helical wrap, at least some of these elements having a ... | 11/25/1986 |
| 4622102 | Automatically operable distillation apparatus The invention provides a compact automatically operating distillation apparatus comprising a baseplate that will free-stand, but is more usually located on a reservoir to receive the distillate, which usually is water. A boiler container having an electri... | 11/11/1986 |
| 4619515 | Electrostatic printing apparatus and method This invention provides an electrostatic printing apparatus comprising a rotatable electrostatically chargeable drum and ion deposition means for forming an electrostatic image on the electrostatically chargeable drum, the improvement comprising means for... | 10/28/1986 |
| 4619248 | Light attachment for speculum This invention provides a lighting source for use with a speculum. The source includes a casing having a hoop and a main portion, and a light emitter coupled to the hoop at a location diametrically opposite the main portion. An electrical energy source is... | 10/28/1986 |
| 4619231 | System for remote disabling of an internal combustion engine The invention provides a system applicable to various internal combustion engines, such as for automobiles, motorcycles, snowmobiles and outboards, to permit an authorized person, such as a police officer, to prevent their improper or illegal operation. T... | 10/28/1986 |
| 4618735 | Process and apparatus for the conversion of sludges There is disclosed a new process for the conversion of the organic components of sludge, particularly sewage sludge, to produce useful, storable, energy-containing oil products, apparatus for carrying out the process and a control process for optimization... | 10/21/1986 |
| 4613006 | Endless belt driven cycle A ground support vehicle has a rear drive track. Cleats extending transversely of the outer surface of the track are outwardly curved to facilitate leaning of the vehicle and its rider as the vehicle travels around a curve. In a preferred embodiment the v... | 09/23/1986 |
| 4611542 | Personalized towing device The invention provides a portable towing device for downhill or water skiers which includes a drive unit. This drive unit comprises a motor and a drive pulley connected to the motor by a rotor which is rotated by the motor. The motor has an actuator which... | 09/16/1986 |
| 4610594 | Container conveyor system The invention provides structure consisting of tracks carrying a transporter which moves horizontally on the tracks. A hoist is suspended from the transporter and the hoist includes an elevator for picking up containers at engagement points above the poin... | 09/09/1986 |
| 4600880 | Apparatus for the detection and measurement of particulates in molten metal The invention provides a new method and apparatus for the detection of non-conductive particulates in molten metals, such as aluminum, gallium, zinc and lead, that can be liquified and drawn into a suitable refractory container. The passage into the conta... | 07/15/1986 |
| 4599869 | Cryogenic deposition of catalysts A reactor for performing reactions at very low, i.e. cryogenic temperatures has a collection vessel mounted above an electron gun to collect vaporized material such as metals, metal oxides, metal salts and metal halides. The collection vessel is maintaine... | 07/15/1986 |
| 4595277 | Toner supply control system The invention provides an agitator for releasing powder toner through a bottom opening of a hopper. The agitator has a screen for placing over the opening and an element which, when positioned in the hopper, is in contact with the upper surface of the scr... | 06/17/1986 |
| 4595078 | Fall arrest device for pole climbers A fall arrest device for a pole climber which has a main yoke with resiliently biased arms at each end for partly encompassing a pole. The resiliently biased arms are movable in the same plane as the main yoke and also urge the secondary yokes into contac... | 06/17/1986 |
| 4593754 | Shell and tube heat transfer apparatus and process therefor Shell and tube heat transfer apparatus and a corresponding process of heat transfer employ a fluid flow consisting of non-turbulent boundary-layers adjacent the inner and outer heat exchanger surfaces of the tubes and a non-turbulent core-layer between th... | 06/10/1986 |
| 4588960 | Output circuits of class B type electronic amplifiers The invention provides a class B output stage for an amplifier, more specifically an integrated circuit amplifier for low power, low voltage application, such as a hearing aid amplifier, that is of class B type with consequent negligible quiescent power d... | 05/13/1986 |
| 4583944 | Orthodontic devices The invention provides a new orthodontic device for use with the arch wire that is employed in an orthodontic procedure to connect together the orthodontic brackets attached to the teeth. The device comprises a core member having an axial bore to permit i... | 04/22/1986 |
| 4582142 | Chain harrows A new chain harrow of improved performance with regard to effective harrowing and non-clogging is made up of V-shaped elements (as seen in plan) interlinked with the apex of one connected to the end of a respective arm of a more forward element. The eleme... | 04/15/1986 |
| 4574693 | Seal press The invention provides a seal press for use in embossing paper with a desired pattern using a die and a die counter. The seal press includes a housing, a seal set movable in the housing between inner and outer positions, and housing means biasing the seal... | 03/11/1986 |
| 4568060 | Shower installation and valve therefore A valve for use in a domestic water installation such as a shower is moveable between open and closed positions by an operating mechanism. The mechanism includes a ratchet that provides intermittent unidirectional drive to the valve member from a manual o... | 02/04/1986 |
| 4565230 | Movable curtain systems for greenhouses and components therefor A sealing member for the straight moving leading edge of a curtain system, such as is used for example in greenhouses to control the heating and/or lighting conditions, consists of an extruded L-section body with at least one flexible sealing element prot... | 01/21/1986 |
| 4561928 | Labelling machine Labelling equipment is provided for applying heat shrinkable wrap-around labels to contoured surfaces of containers. The equipment includes a label carrier having a wheel rotatable about its axis, a vacuum system coupled to the wheel to retain labels on t... | 12/31/1985 |
| 4561834 | Rotary vaned pumps with fixed length and shearing knife-edged vanes A rotary vaned pump has solid vanes of fixed length sliding in a boss mounted for rotation about a longitudinal axis eccentrically displaced from the longitudinal axis of the pump chamber, so as to provide respective pump compartments in the pump chamber ... | 12/31/1985 |
| 4561623 | Book holder A telephone book holder is described which consists of a spine with two groups of parallel channels in its rear surface. Edges of front and rear covers are dimensioned to be slid into respective channels of each group, the edges being connected to the cov... | 12/31/1985 |
| 4561430 | Light source for diagnostic test The invention provides a light source for use with diagnostic devices such as laparoscope having a male fitting to receive a light tube connection for transmitting light within the device to an end for viewing using an eyepiece on the device. The light so... | 12/31/1985 |
| 4560192 | Door securer A door securer includes a generally U-shaped member that is adapted to be mounted on the side of a door that opens, as opposed to the side that is hinged. The inside leg of the U-shaped member is pivotably connected to a leg member that has a foot member ... | 12/24/1985 |
| 4560107 | Aerial spraying apparatus Aerial spraying apparatus includes two sets of nozzles located at spaced locations on an aircraft. Each nozzle has an electrode associated with it to induce a charge on the cloud of droplets issuing from the nozzle. A high potential is maintained on each ... | 12/24/1985 |
| 4555662 | Method and apparatus for the detection and measurement of particulates in molten metal The invention provides a new method and apparatus for the detection of non-conductive particulates in molten metals, such as aluminum, gallium, zinc and lead, that can be liquified and drawn into a suitable refractory container. The passage into the conta... | 11/26/1985 |
| 4551379 | Inflatable packaging material A packaging material is formed from a pair of juxtaposed sheets. The material includes a plurality of continuous passages formed between the sheets and extending between two of its edges. Each of said passages is delimited by a pair of spaced partitions, ... | 11/05/1985 |