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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4018236 | Ash tray An ash tray is characterized as having an upwardly opening ash receiver receiving chamber circumscribed by a rim shaped to define a slot sized and arranged to removably, frictionally grip a butt end of a cigarette and to position such cigarette to upstand... | 04/19/1977 |
| 4011781 | Cutoff die A modular cutoff die unit features square-ended punch and die steels, which are supported by and sized relative to their respective retaining shoes such as to provide four reversable cutting edges and to allow plural cutoff dies to be arranged in tandem.... | 03/15/1977 |
| 4009770 | Hoist brake construction featuring cam devices A hoist employs a modified Weston brake characterized as having an axially aligned ratchet pawl or plate and ratchet wheel assembly and a cam device operable to supplement spring force applied to the ratchet assembly for gaining and maintaining a positive... | 03/01/1977 |
| 4010353 | Electronic voting machine with cathode ray tube display A voting machine system employs a processor section and a plurality of peripheral units, all interconnected by a two-way street or bus system. The peripheral units constitute the voting machine proper and the processor or section acts upon the data genera... | 03/01/1977 |
| 4008857 | Screen mill A hammer mill features a screen mounting arrangement in combination with a mill casing door arrangement facilitating insertion/removal of the screen.... | 02/22/1977 |
| 4001031 | Process for making low alkali cement clinker The potential K2 O content of cement clinker due to the presence of potassium compounds in the raw feed mix is substantially eliminated by introducing an active agent into the kiln along with or in conjunction with the fuel used to fire the kil... | 01/04/1977 |
| 3999819 | Filling folders and dividers File folders and filing cabinet drawer dividers (as will be referred to hereinafter as "separators") made of relatively thin and inexpensive paper stock which are vertically reinforced by an improved stiffening means which also furnishes (or reinforces) t... | 12/28/1976 |
| 3991652 | Educational device for teaching numerical control An educational device for teaching the principles of numerical control includes a machine tool having three-axis movement with a predetermined fixed rate of movement along each axis. A control tape is driven at a predetermined fixed rate which is faster t... | 11/16/1976 |
| 3974728 | Multi-part punch A punch is formed by heat hardening a tool steel body previously machined to define a punch body portion having an end opening cavity including a conical end opening portion and a cylindrical base portion; inserting a cylindrically shaped hard and abrasiv... | 08/17/1976 |
| 3974669 | Lock A lock, such as a padlock, is provided with a single, spring biased end journaled bolt for operably interconnecting a shackle with a magnetic key controlled, locking-unlocking mechanism.... | 08/17/1976 |
| 3974640 | Coupling link A coupling link for field/factory assembly of chain lengths and/or attachments thereto; and/or for repairing broken chains or to couple lengths of chain together whenever desired; said coupling link comprising two half link units each of which comprises a... | 08/17/1976 |
| 3972860 | L-aspartyl-L-phenylglycine esters of lower alkanols L-aspartyl-L-phenylglycine esters, e.g., L-aspartyl-L-phenylglycine methyl ester, are new compounds useful as sweeteners for various foods, beverages and compositions intended to be tasted, e.g., chewing gums, dentifrices, mouth washes. Such compounds can... | 08/03/1976 |
| 3968532 | Knock down boat construction A boat is formed with a pair of separate, fore and aft extending deck halves to each of which is secured a pontoon; the deck halves being releasably secured together by a bridging front locking plate and a bridging rear locking-motor mounting plate, and h... | 07/13/1976 |
| 3967480 | Rotary release magnetically operated lock A lock includes pivotally supported tumbler pins having magnetically attractable ends normally disposed in one of several locked positions arranged along prescribed paths of travel, but movable under the influence of a key to assume combination setting or... | 07/06/1976 |
| 3964698 | Air cushion type undercarriage for aircraft The inflatable cell portion(s) of an air cushion type undercarriage for airplanes, air cushion vehicles, or the like, of the type which are formed with air outlet openings in the ground tangent areas thereof are individually provided with air flow control... | 06/22/1976 |
| 3955665 | Automatic weighing and labeling machine A continuously driven endless belt type conveyor is disclosed as being employed to transfer packages successively through a weighing station having a weighing platform on which packages rest during weighing thereof and a package labeling station. A flight... | 05/11/1976 |
| 3955637 | Weighing apparatus An apparatus particularly adapted for weighing spools of yarn without subjecting the yarn to physical contact, which features an expansible mandrel depending from a weigher and having a lower end adapted to be releasably locked within the core tube of the... | 05/11/1976 |
| 3955388 | Combination magnetic key A key for a magnetic lock is provided with a plurality of dials, which are manually rotatable to position magnet devices carried thereby in desired combination setting positions determined by visual observation of dial carried indicia.... | 05/11/1976 |
| 3955241 | Cam operated spring biased counterbalance hinge mechanism for cabinet lid or the like A counterbalance hinge mechanism for a cabinet lid includes a stationary cabinet affixed hinge rod serving to rotatably support a pair of axially stationary lid mounting cam members and to slidably support a pair of non-rotatable cam followers. An adjusta... | 05/11/1976 |
| 3950819 | Lid counter-balance mechanism A counterbalance mechanism features a single stationary bracket, which serves as a free pivotal and thrust bearing support for a counterbalance assembly extending through the bracket for connection to a lid operating linkage.... | 04/20/1976 |
| 3948068 | Magnetic lock In a magnetic lock of the type having at least one tumbler pin pivotally supported on a mounting plate and a locking plate having an opening arranged to receive one end of the tumbler pin when an opposite end of such pin is attracted by a permanent magnet... | 04/06/1976 |
| 3946906 | Nozzle for pressurized cans of whipped topping A nozzle for a pressurized can of whipped topping is constructed to facilitate attachment of a color dispenser characterized as including a source of coloring matter and a distributor ring having a plurality of nozzles spaced apart about its inner circumf... | 03/30/1976 |
| 3942817 | Extension for car frame A unit for extending the length of the frame, ie. wheel base, of a VW to accommodate the frame for mounting long front hood car bodies.... | 03/09/1976 |
| 3940843 | Method of forming an extension tube assembly An extension tube assembly is provided with a swivel coupling permitting selective angular adjustment thereof relative to a hand manipulated shut-off valve device of a compressed air sprayer unit, thereby to facilitate accurate "pointing" of a spray disch... | 03/02/1976 |
| 3940173 | Safety hook A safety hook for use with lifting hoists and the like features a thumb operated keeper latch device arranged adjacent an end of a hook body gripping groove, which serves to both protect the fingers of an operator and position and operator's thumb for eng... | 02/24/1976 |
| 3938640 | Coin operated lock In a coin operated lock unit having a coin operated patron key lock adapted to effect locking of a cabinet door, the improvement featuring adjustment of the patron lock to accommodate different coin denominations, as well as varying numbers of coins of ea... | 02/17/1976 |
| 3936221 | Vertical cantilever pump A vertical cantilever pump featuring a novel pump shaft construction for preventing excessive or an abnormal rise of pumped liquid therealong without a substantial reduction in pumping efficiency.... | 02/03/1976 |
