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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 |
| 4951395 | Drywall die-cutting for electrical outlet boxes The drywall die-cutting tool is comprised of a female plate having a center opening outlining a given size and shape with four corner holes to receive the legs of the extracting mechanism, and a male plate, being the cut-out of the female plate. The male ... | 08/28/1990 |
| 4934055 | Aerosol can opener A device for use in rendering a discarded pressurized can partly filled with a hazardous liquid disposable as non-hazardous waste that can be buried, by depressurizing the discarded pressurized can and collecting the hazardous liquid in a single safe rese... | 06/19/1990 |
| 4891887 | Hand held drill drive There is provided a hand held and hand operated drill for installing ceiling hooks or other mounting apparatus to a ceiling constructed of plasterboard. The present device collects the falling material cut away by the drilling process in a collection cup ... | 01/09/1990 |
| 4867446 | Cue tip chalk retention system A cue tip chalk retention system wherein openings are formed on cue tip surfaces and chalk is rubbed into the openings. The openings are formed with a penetrating device comprising a housing with a cavity containing multiple outwardly extending pin member... | 09/19/1989 |
| 4765173 | Well penetration apparatus A well casing penetrator includes an elongated housing enclosing an outwardly movable hydraulic driven punch for cutting an opening in a casing. A high pressure liquid jet nozzle is mounted on the end of a hose which moves outwardly through an axial bore ... | 08/23/1988 |
| 4763460 | Sealing foil breaker for analyzer test cups A reciprocable vertical shafts 21 has a pyramid shaped lower tip for piercing a sealing foil 8d secured across the top of an analyzer test cup containing an active substance. The edges of the pyramid divide the foil into triangular segments which are pres... | 08/16/1988 |
| 4730395 | Apparatus for cutting holes for electrical wall outlets in wall covering panels A dry wall and masonary cutting tool comprised of an interior cutting box, the interior cutting box having a plurality of forward facing teeth for cutting a dry wall panel, a pair of locating nails for precisely locating the interior cutting box with resp... | 03/15/1988 |
| 4713886 | Piercing tool A device for locating an object concealed behind a piercable member which is less dense than the object comprises a handle with a thin elongated needle mounted on the handle. The location of a denser object concealed behind the piercable member, such as a... | 12/22/1987 |
| 4707924 | Locking hole punch A locking hole punch for punching holes in metal sheets, particularly metal sheets difficult of access such as metal C-studs, is disclosed. This hole punch comprises an arm member that has a head at the end of an outwardly curved portion and a first handl... | 11/24/1987 |
| 4700601 | Punch pin head structure Punches for paper and the like have a metal pin having a male punch element formed on one end and a pressure application area on the opposite end. To withdraw the punch pin an enlargement is formed at or near the opposite end, the enlargement cooperating ... | 10/20/1987 |
| 4669191 | Paper perforating device A paper perforating device for creating a series of linearly aligned perforations the length of a sheet of paper. The invention includes a lower member with a series of linearly aligned openings and an upper member with a corresponding number of linearly ... | 06/02/1987 |
| 4656741 | Hand held and hand operated tool for controllably punching a small air intake hole in a burned out removed fluorescent lighting tube After the removal of a burned out fluorescent lighting tube and its transport to a waste collecting locale, a hand held and hand operated tool is inserted in part over a tube end. Thereafter upon creating a squeezing force, via the lever action of this to... | 04/14/1987 |
| 4644656 | Method and apparatus for disassembly of a spot-welded structure A method and apparatus for removing spot welds from a sheet metal structure is shown. A fluid powered hand punch has a handpiece and an L-shaped extension forming a punch die. An elongated rod extends from a fluid piston within the handpiece to a punch bi... | 02/24/1987 |
| 4631769 | Combination tool for opening, sealing, and puncturing a paint can A tool is provided for use with a paint can and a lid adapted to be positioned within a generally peripherally arranged channel in the paint can. The tool includes first and second spaced prongs and a downwardly extending spike, all of which extend downwa... | 12/30/1986 |
| 4597180 | Hydraulic punch tool for heat exchangers A punch tool is disclosed for puncturing the walls of heat exchanger tubes when they become worn in order that the tubes may be repaired. Said tool comprises a hardened, longitudinally drilled, steel rod that is able to fit within the heat exchanger tube.... | 07/01/1986 |
| 4580302 | Painting tool A tool for a paint can is provided and consists of an elongated shank extending from a handle that has a first structure thereon to remove the paint can lid, a second structure thereon to punch a hole in the paint can gutter so that paint will drain back ... | 04/08/1986 |
| 4502223 | Hand tool with toothed rotors for dislodging material from a surface A scarifying tool has a plurality of modules, each module consisting of a pair of cutter discs with bevelled teeth, rotatably mounted at an angle to the direction of travel to provide a sideways tearing action on the material to be dislodged as the discs ... | 03/05/1985 |
| 4473948 | Tire puncturing device A tire puncturing device includes a plurality of drive pins which are mounted on a base plate. The pins can be forced into an automobile tire in order to puncture the tire and thus prevent the automobile from being driven. The drive pins are normally Tefl... | 10/02/1984 |
| 4404749 | Combination tool apparatus Combination tool apparatus including a handle portion and a tool portion; the handle portion including an elongated handle member, the handle member including an opening extending into the member from one end thereof, the opening including an internal sid... | 09/20/1983 |
| 4365415 | Melon cutting tool A melon cutting tool includes an elongated handle portion having a preferably U-shaped cross section which is configured and dimensioned for gripping by the user's fingers and a blade portion secured to the handle portion normally thereof, having a genera... | 12/28/1982 |
| 4335511 | Dry wall outlet box locator and cutter assembly An assembly for determining the center of a stud or joint supported electrical outlet box on a sheet of dry wall prior to the latter being permanently secured to the studs or joints, and for forming an opening in the dry wall as a result of the determinat... | 06/22/1982 |
| 4316326 | Stylus for writing braille A stylus for writing braille by hand is provided. The stylus has a longitudinally extending handle, an arm attached to the handle with an angularly offset, pointed end for making braille impressions in paper, and a pressure pad attached to the arm for sup... | 02/23/1982 |
| 4274202 | Perforating device A perforating device for wallpaper pieces to be separated from a wall includes an elongated handle and a pair of elongated rollers supported on the handle for free rotation by means of a frame rigidly connected to the handle and carrying axles to support ... | 06/23/1981 |
| 4259785 | Marking template for wall coverings A marking template for marking the location on a wall covering of both electrical outlets and electrical switches located in the wall to be covered. The template can be supported by either the single support screw for an outlet trim plate or the two suppo... | 04/07/1981 |
| 4190955 | Golf tee awl and pivoted sheath A golf tee awl for making holes in the ground to make it easier to insert golf tees. The awl has a circular knob-shaped handle with a sharpened shank or spike protruding therefrom and a protective sheath which covers the sharpened shank when the awl is no... | 03/04/1980 |
| 4131996 | Blade for cutting wallboard A blade having a chisel point at one end and a cutting point intermediate its ends is mounted in the blade holder of a sabre saw. As the sabre saw is moved along the wallboard to be cut, the chisel point on each stroke moves through the gypsum core, its r... | 01/02/1979 |
| 4087913 | Utility fixture locator and cutter The locator and cutter includes a first member in the form of a plate arranged to be affixed to a fixture supported on a stud frame. An externally threaded shaft is affixed to the plate and extends perpendicularly to the plane of the stud frame and termin... | 05/09/1978 |
| 4087912 | Punch An elongated steel punch having a body section wherein one end is pointed and between the point and the body, a series of step portions are provided whereby a single tool can be used to pierce a work material in a manner to form holes of different diamete... | 05/09/1978 |
| 4069586 | Center punch A center punch particularly adapted for locating and marking the center position of a circular opening, as for making a center mark in a stud that has been broken off below the surface, to facilitate drilling and removing the stud. Movable jaws are each p... | 01/24/1978 |
