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 |
| 4758721 | Thermal cycle recirculating pump for isotope purifier A magnetic mass spectrometer used to purify ions in a polyisotopic mixture wherein non-ionized particles which exit the ion source are collected in the vacuum chamber and are then introduced into a thermal cycle pump and returned to the ion source to incr... | 07/19/1988 |
| 4745897 | Automatic electronic and mechanical system to avoid vehicle theft A system to avoid theft of vehicles equipped with internal combustion engines by automatically blocking the fuel flow. This automatic blocking exists every time the engine is turned off or optionally, when any vehicle door is opened while the engine is ru... | 05/24/1988 |
| 4737638 | Preselector source for isotope separation An apparatus for recycling non-collimated particles to the ionizer chamber of a beam forming subsystem of a magnetic mass spectrometer which includes a cryogenically cooled moving element forming a portion of the wall of the ion separation chamber between... | 04/12/1988 |
| 4708195 | Method of sealing leaks in a cooling system The cooling system of automotive and other engines are permanently sealed by a cooling system sealant which will seal both small leaks caused by corrosion and large leaks caused by warped heads and blown head gaskets. The cooling system sealant comprises ... | 11/24/1987 |
| 4704754 | Tension arch structure A structural system for use in bridges, buildings and other structures. The system supports part of its load by tension action and part of its load by arch action. Cables are stretched and anchored between end supports. Lateral compressive elements are pl... | 11/10/1987 |
| 4682592 | Method and device for achieving reversible male sterilization A male contraceptive which is effective, reversible and non-surgically implanted, which prevents the transport of sperm by occluding the lumen of the vas deferens, the ejaculatory duct, or the urethra. The male contraceptive is inserted and removed throug... | 07/28/1987 |
| 4659897 | Method of making a watchcase A method of making a watchcase, in which two projections are formed on a joining surface of a part of the watchcase, such as a band connecting lug. The part is joined to another part such as a case body by projection welding to make the watchcase.... | 04/21/1987 |
| 4644978 | Tension arch structure A structural system for use in bridges, buildings and other structures. The system supports part of its load by tension action and part of its load by arch action. Cables are stretched and anchored between end supports. Lateral compressive elements are pl... | 02/24/1987 |
| 4644932 | Method and device for energy recovery by manufacturing of asphalt in bulk Method and device for manufacturing of asphalt bulk masses where a substantial part of the heat energy of the furnace gases from the drying and mixing process is transferred to the bulk mass fractions before those are supplied to the drying and mixing pro... | 02/24/1987 |
| 4566066 | Securities valuation system This discloses a system operating on a general purpose digital computer which produces securities portfolio valuation schedules for multiple simultaneous users. The computer maintains securities information in system-wide files which are updated, both ele... | 01/21/1986 |
| 4556350 | Mine roof anchor bolt This specification describes a new anchor or rock nut which is used in association with an anchor bolt to rupture packages of two or more component setting mixtures. The nut is characterized by having a plug of thermosetting resinous material formed in si... | 12/03/1985 |
| 4477060 | Underwater cutting tool An underwater cutting tool for steel, concrete, or the like, comprising a tubular oxygen lance (10) adapted to be connected to an oxygen source (24, 25) and having a pistol grip-like handle (16). Prior to its first use the lance is sealed so as to be ignited s... | 10/16/1984 |
| 4475503 | Engine speed control system An engine idling speed control system for an internal combustion engine comprising an actuator for actuating a throttle valve for increasing and decreasing the idling speed, an engine speed signal generating circuit, an engine speed increasing signal gene... | 10/09/1984 |
| 4471642 | Replacement stand for rolling mill A rod, bar or section mill has a train of rolling mill stands, each of which is attached to a bed plate with which the stand is introduced into, and withdrawn from, the mill. The bed plate carries pedestals on which are secured guides; those guides can be... | 09/18/1984 |
| 4464803 | Tension arch structure A structural system for use in bridges, buildings and other structures. The system supports part of its load by tension action and part of its load by arch action. Cables are stretched and anchored between end supports. Lateral compressive elements are pl... | 08/14/1984 |
| 4464423 | Method for forming dual gloss coating A dual gloss coating is formed on a substrate by first applying to the substrate a continuous layer of curable polyurethane or PVC plastisol or organosol. After the layer is at least partially cured, a second discontinuous layer of the same or different u... | 08/07/1984 |
