Bizarre Patents
An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 8444018 | Extrusion device An extrusion device for the extrusion of single- or multi-component materials from at least one container is provided. The extrusion device includes a housing having a functional section and a manual operation section. The housing extends substantially along an axia... | 05/21/2013 |
| 7160951 | Peroxide compositions with reactive diluents The invention relates to peroxide compositions comprising a reactive diluent for the peroxide, wherein the diluent is either a component containing one or more vinyl ether group(s) and having a monomeric structure according to formula 1, (A—CH═CH—O)n | 01/09/2007 |
| 5577860 | Attachment device for securing structural components to shaped rails An attachment device including a cover plate (3) and a fastening element (10) is used for securing a structural component (1) to a solid foundation unit (12). The structural component (1) has an opening (2) formed of a round bore with two symmetrically ar... | 11/26/1996 |
| 5471903 | Device for igniting a propellant charge, a cartridge for the charge and a magazine for holding cartridges, especially for stud setting or driving tools A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommo... | 12/05/1995 |
| 5296768 | Revolutions per minute regulation device for a hand-held electric tool and method of its manufacture A revolutions per minute (RPM) control device for hand-held electric tools, such as drilling tools and hammer drills, has a RPM sensor in a separate housing or container from the control device housing. The sensor is connected to the control device by a f... | 03/22/1994 |
| 5294227 | Self-tapping screw A self-tapping screw has a cutting thread formed by two separate threads (3, 4). An imaginary envelope (5) defines a annular space (5) laterally enclosing the screw shank and has a section (5a) tapering inwardly along an inwardly tapering leading end sect... | 03/15/1994 |
| 5216200 | Device for igniting a propellant charge, a cartridge for the charge and a magazine for holding cartridges, especially for stud setting or driving tools A device for igniting a propellant charge is provided with a housing defining a cavity wherein a piston is displaceably guided. The cavity is connected via a bore acting as a nozzle to a chamber wherein a case member of a cartridge is arranged for accommo... | 06/01/1993 |
| 5213247 | Internal combustion powered tool for driving fastening elements A portable, internal combustion power operated working device, such as a setting tool for driving fastening elements into a receiving material, has a combustion chamber (9) for burning an air-fuel mixture. A piston (7, 7a), guided within a guide cylinder ... | 05/25/1993 |
| 5199501 | Drilling or chiseling tool with suction apparatus A drilling or chiseling tool (1) includes a suction device (2) with a suction head (3), a suction line (4) extending from the suction head to a suction blower wheel (5) and a separating device (6). The suction device (2) is detachably connected with the t... | 04/06/1993 |
| 5193769 | Vertically adjustable pipe hanger A vertically adjustable pipe hanger includes an elongated strip-shaped member (1), and a threaded rod (2) carrying a lock nut (3) and a stop nut (4). The strip-shaped member (1) is bent to form a retaining loop section with bent off first and second end s... | 03/16/1993 |
| 5176481 | Expansion dowel with friction reducing coating An expansion dowel has a friction reducing coating on the contacting surfaces formed by an inside surface an an expansion sleeve and an outside surface of the shank contacting the inside surface of the sleeve. The coating effects a smaller friction value ... | 01/05/1993 |
| 5172780 | Hard metal or hard material tipped drilling, chipping and cutting tools Precipitation hardenable solders are used for securing hard metal or hard material parts to the support member of a tool for drilling, chipping or cutting rock or hard construction materials. The support member is formed of steel. The hard metal or hard m... | 12/22/1992 |
| 5170922 | Powder charge operated setting tool Powder charge operated setting tool includes a barrel (11) and a closing or breech member (17), axially displaceable within a housing 1. Stops (3a, 17a) and shoulders (8b, 11e) cooperating with each other are provided in the housing (1) and on the barrel ... | 12/15/1992 |
| 5076743 | Device for drilling undercuts A device for drilling an undercut in a borehole formed into a substrate includes a housing (1) containing a guide sleeve (2) with a bushing (4) arranged eccentrically within and rotatable relative to the guide sleeve. A torsion spring (6) is located betwe... | 12/31/1991 |
| 5025870 | Hand-held tool with displaceable spring loaded handle A portable hand-held tool, such as a hammer drill or chisel hammer, includes a housing having a main vibration axis and a handle displaceably secured to the housing and movable toward the housing against compression springs. The springs have an axis of co... | 06/25/1991 |
| 4986709 | Fastening element assembly A fastening element assembly for use in a hard receiving material, such as concrete, masonry and the like, includes a sleeve and a fastening element or bolt. The sleeve forms a blind bore in the receiving material. At its leading end, in the insertion dir... | 01/22/1991 |
| 4915182 | Cutter elements for hollow drill bit A hollow drill bit is formed of an axially extending tubularly-shaped support member (1) with cutter elements (2) inserted into the leading end (1a) of the support member. Each cutter member (2) has a radially outer surface (2a) and a radially inner surfa... | 04/10/1990 |
| 4898505 | Expansion dowel assembly with an expansion cone displaceable into an expansion sleeve An expansion dowel assembly includes an axially extending anchor bolt and an expansion sleeve laterally enclosing the bolt. At its leading end, the anchor bolt has an expansion cone displaceable opposite to the insertion direction of the dowel assembly re... | 02/06/1990 |
