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 |
| 7192339 | Grinder disc, insert holder and insert assembly A grinder disc, insert holder and insert assembly including a grinder disc with a plurality of grinder insert holders for grinder inserts for grinding and the like. The assembly includes a grinder insert holder having a holder case with a hollow interior an open end... | 03/20/2007 |
| 6733366 | Tool and process for finishing a vehicle wheel surface A vehicle wheel has an outboard face which includes a smoothed portion to provide a cosmetic finish to the wheel face. The smoothed portion is formed by pressing a cutting tool having a non-symmetrical tip against the wheel surface as the wheel is rotated. ... | 05/11/2004 |
| 6682403 | Grinding machine with two grinding wheels A grinding machine is disclosed comprising a main frame, a wheelhead, a worktable (16), a headstock (12) and tailstock (14) carried by the worktable (16). A computer is supplied with data indicative of at least one operational parameter of the grinding pr... | 01/27/2004 |
| 6159084 | Electrical hand-power tool, in particular hand grinder An electric hand power tool has a rotatable workshaft, a tool driveable by the rotatable work shaft and performing a movement selected from the group consisting of a rotary movement, a circulatory movement and an oscillating movement, an eccentric pin whi... | 12/12/2000 |
| 6074282 | External hone and method of making and using the same A honing member for use in honing the external cylindrical surface of a workpiece comprising an elongated annular member having a passageway extending the entire length therethrough, the inner annular surface of such passageway having abrasive particles a... | 06/13/2000 |
| 5873685 | Press processing method and press processing device The disclosed press processing method and device can chamfer work, for instance by pressing a chamfering tool against the work at a predetermined contact pressure, without detecting the pressing force of the chamfering tool against the work or without fee... | 02/23/1999 |
| 5255476 | Honing mandrel construction A honing mandrel having an elongated body with a passageway extending along the length thereof including at least one open sided portion, the mandrel including an abrasive assembly positioned for radial movement in the open sided passageway portion having... | 10/26/1993 |
| 5185969 | Positive retracting honing mandrel An improved radially expandable honing mandrel construction wherein a radially extendable work engaging portion can be positively retracted into the body member of the mandrel by operation of the adjusting member in a direction opposite its direction for ... | 02/16/1993 |
| 5050352 | Honing stone assembly An abrasive honing stick is bonded within a channel-shaped shell which is made of sheet metal and which is secured detachably to a stone holder by a pair of retaining studs. Each stud extends through a hole in the shell, is telescoped into an alined hole ... | 09/24/1991 |
| 4592173 | Hone for gerotor stators, and honing method An apparatus and method for honing cylindrical bores adjacent to a larger cavity or bore is disclosed. The apparatus comprises a set of expandable abrasive-coated frustro-conical sleeves mounted on rotating shafts, one for each cylindrical bore, which cir... | 06/03/1986 |
| 4275530 | Grinding heads for grinding machines A grinding head has at least one expandable grinding tube mounted on an expansion cone. The expansion cone is carried by, and is rotatable with, an expansion rod which is coupled for rotation with a driven part of the head. The expansion rod and cone are ... | 06/30/1981 |
| 4254591 | Internal lapping tool An internal lapping tool comprises a steel mandrel having a cast iron generally cylindrical head welded on the front and thereof. The head is formed with two spaced arcuate lapping faces opposite a longitudinal slot which carries a cast iron insert provid... | 03/10/1981 |
| 4253279 | Precision honing device A precision honing device including a substantially tubular honing member having an outer work engaging surface, an axially tapered inner surface, a full length slit through the device along one side thereof, and a layer of a relatively hard wear resistan... | 03/03/1981 |
| 4223485 | Lapping tools A tool for lapping internal surfaces of holes. Lapping tools conventionally have an expandable working portion for variable diameter operation. Known tools tend to expand in a barrel shape leading to inaccurate lapping. The invention seeks to avoid this b... | 09/23/1980 |
| 4173852 | Expandable tool including cutting section and pilot A rotatable cutting tool (10) of the disclosure includes an expandable cutting section (40) and a leading end having an expandable pilot (16) for properly aligning the tool during use. The trailing end of the tool preferably also has an expandable pilot (... | 11/13/1979 |
| 4133146 | Rotary abrasive tool A rotary mandrel which can directly engage sandpaper or other wearing material, to eliminate the need for intermediate devices to couple the mandrel to the sandpaper. The mandrel is constructed with slots that closely receive the edges of the sandpaper to... | 01/09/1979 |
