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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 5997410 | Golf training device Improvement in a golf training device having a guide bar having a horizontally disposed straight portion thereof for guiding the back and forth movement of the shaft of a golf club while a golfer practices therewith, the improvement being in the arrangeme... | 12/07/1999 |
| 5499853 | Pocket part for a vehicle door In a pocket part for a vehicle door constructed to be affixed to the interior structure of such door to form a vehicle door pocket having a U-shaped plastic frame, the frame having an elongate base and a pair of arms upstanding from the base and a pair of... | 03/19/1996 |
| 5179858 | Mass air flow meter A mass air flow meter having smaller overall external dimensions than prior devices to facilitate packaging within the engine compartment of a vehicle. Contributing to this smaller size is the use of an "inside-out" venturi in which the inside diameter of... | 01/19/1993 |
| 5048327 | Mass air flow meter Improvements in a mass air flow meter for internal combustion engines are disclosed which comprise structure for improving the flow dynamics of the air flow through the sampling path including expansion of the dynamic range and increase of the signal to n... | 09/17/1991 |
| 4946552 | Method of making a cardboard composite pattern Method of making a pattern for a prototype mold including making a cardboard composite pattern which simulates a prototype part to be molded as the latter is disposed in die position, the method including building up a box-like structure of glued-together... | 08/07/1990 |
| 4887027 | Leadless current-sensing system A leadless current-sensing device for sensing current flowing in a conductor when the device is positioned in the vicinity of the current-carrying conductor. The device has a probe having a set of two current sensors disposed at a preset radial angle alph... | 12/12/1989 |
| 4879018 | Low voltage anodizing process and apparatus A low voltage anodizing process for anodic oxidation of metals in which are used: (i) an anodizing bath containing an electrolyte, an anode and a cathode; and (ii) and AC fed DC power supply for supplying pulsating DC power to the anodizing bath; the anod... | 11/07/1989 |
| 4774776 | Bouncing attachment for shoes Improvement in an attachment for shoes in which a hollow body inflated with air and compressed in use is held on each shoe of a user, the improvement comprising constructing the attachment so that it is a bouncing attachment which provides a bounce for th... | 10/04/1988 |
| 4736158 | Wire identifying apparatus for identifying wires of a multiple wire electrical system Wire identifying apparatus for identifying wires of a multiple wire electrical system as the wires extend between one location and another, said wire identifying apparatus comprising two separate units for use at the two locations, respectively, and desig... | 04/05/1988 |
| 4679924 | Corona discharge photography In corona discharge photography method for photographing a speciman which utilizes a pulse generator, an amplifier, an electrode and a photographic medium, the improvement comprising providing a transmittance column and filling the transmittance column wi... | 07/14/1987 |
| 4669132 | Cosmetologist's protective device A cosmetologist's protective device comprising a pre-formed disposable object having an open-ended tapered cavity therein so that a plurality of such devices can be stacked, one on top of the other, the device having a top wall and two side walls dependin... | 06/02/1987 |
| 4610122 | Concrete reinforcing rod holder Improvement in a concrete reinforcing rod holder comprising hollow open-sided sections joined together so as to hold a pair of contacting reinforcing rods prior to pouring concrete to form a reinforced concrete structure, such improvement comprising each ... | 09/09/1986 |
| 4575091 | Word game of magnetizable letters for children A word game for children comprising the combination of a plurality of magnetizable alphabet letters for throwing on a supporting surface to form a pile thereof, a permanent magnet stiff wand having a handle for pulling a desired one or more of the letters... | 03/11/1986 |
| 4539970 | Bowstring-held archery device A bowstring-held archery device which serves as an anchor point for an archer's pulling hand, the device having a body and a tail projecting from the body, the body having an arrangement for holding the device on a bowstring in fixed relationship thereto,... | 09/10/1985 |
| 4476521 | Perin rectifier apparatus Improvement in a regulated D.C. power supply having a conventional main transformer with a center tap secondary and rectifying elements, the improvement comprising a buck-boost transformer, and a regulating device, the buck-boost transformer being of the ... | 10/09/1984 |
| 4455786 | Twist drill sharpening machine An improved twist drill sharpening machine for sharpening two lip twist drills having a base, a chuck for chucking a drill bit W to be sharpened, and a grinding wheel spindle supported on the base, a grinding wheel fast on the spindle, the grinding wheel ... | 06/26/1984 |
| 4403362 | Bulk loading facility having a drop way Improvement in a bulk loading facility having a fixed deck having a drop way projecting from and hinged to said deck so that it can be raised or lowered for loading, the drop way having an extendible deck slideably supported from and attached to the outbo... | 09/13/1983 |
| 4398488 | Removable canoe-carried cooler A removeable canoe-carried cooler for a canoe having an interior perimeter top rim, the canoe-carried cooler having an insulated container portion, an insulated hinged lid therefor, and a lock for the lid, the canoe-carried cooler constructed to be fitted... | 08/16/1983 |
| 4396811 | D.C. Power reversing switch Improvement in a D.C. power reversing switch having a base having an insulator plate fast thereon and four spaced apart metal contact plates fast on the top side of the insulator plate, a manually moveable switch plate consisting of a second insulator pla... | 08/02/1983 |
| 4339057 | Filter paper dispenser A dispensing device is disclosed for dispensing nested dished papers. The device has a base for holding a stack of nested dished papers. The dishing of the papers is such that each paper has a bottom wall and a substantially conical side wall. The device ... | 07/13/1982 |
| 4333043 | Electrical control circuit for controlling a D.C. solenoid Improvement in an electrical control circuit for controlling a D.C. solenoid having a plunger and a manual control potentiometer, a feedback potentiometer and a comparator for comparing the signal voltages from the potentiometers so that the movement of t... | 06/01/1982 |
| 4316300 | Swim paddles A pair of swim paddles which facilitate swimming constructed to be worn on the forearms of a swimmer, each swim paddle having a length substantially equal to and a width greater than that of the swimmers's forearm, whereby to increase the effective area t... | 02/23/1982 |
| 4302891 | Jumping shoe attachment Improvement in a jumping shoe attachment having a sole plate and an arrangement for attaching the sole plate to a user's shoe, the improvement comprising an arrangement including a ground operative hinge device disposed beneath the sole plate for yieldabl... | 12/01/1981 |
| 4298297 | Lock nut Improvement in a lock fastener comprising a length of compression spring and a housing therefor permanently fastened to a rear portion of the spring, the turns on the front portion of the spring being free for threadably engaging an externally threaded fa... | 11/03/1981 |
| 4280243 | Bulk loading facility having a drop way Improvement in a bulk loading facility having a fixed deck having a vertical column as a part thereof and a drop way hinged to the deck so that it can be raised or lowered for loading, the improvement comprising the drop way having a handrail assembly inc... | 07/28/1981 |
| 4244107 | Indirect reading inside caliper An improved indirect reading inside caliper which eliminates the need for a plurality of telescoping inside gauges, the inside caliper comprising an elongated body, a pair of measuring fingers and a bracket slidable on the body, respective manually operat... | 01/13/1981 |
| 4230062 | Releasable boat anchor An improved releasable boat anchor of the double-acting type for anchoring a boat and for releasing itself from an underwater obstruction in which the anchor may be captured, the anchor comprising a fluke body and a shank, the shank comprising an intermed... | 10/28/1980 |
| 4227559 | Dual attitude golf bag Improvement in a dual attitude golf bag for carrying a set of golf clubs having an in-use attitude for golf playing and a space saving flat-lying attitude for storage and transport, the improvement comprising a flexible one-piece extruded core for the gol... | 10/14/1980 |
| 4208776 | Punch, die and anvil set Improvement in a punch, anvil and die set for spot clinching two or more materials together to form a spot clinch joint in which the anvil is arranged inside of the die and the punch and die move toward and away from each other and a lancing operation occ... | 06/24/1980 |
| 4192538 | Bumper construction for motor vehicles Improved bumper construction for motor vehicles comprising first and second bumper members, the second bumper member having brackets for mounting the same to the frame of a vehicle, the first bumper member slideably carried on the second bumper member, a ... | 03/11/1980 |
| 4188743 | Fishing lure Improvement in a fishing lure having a molded body part having a projecting attaching loop, the improvement comprising the attaching loop being a wire member formed into a loop portion and having free end portions forming two legs, the legs being bent in ... | 02/19/1980 |
| 4162065 | Work holding fixture for cylindrical workpieces A work holding fixture for cylindrical workpieces comprising a first member having a flat base and a cylindrical portion upstanding from the base, a horizontal V-groove formed in the upper end of the cylindrical portion, and a pair of clamps having fasten... | 07/24/1979 |
| 4135845 | Cutting tool An improved carbide bit cutting tool comprising of the type a tool body having a tool-bit-receiving aperture formed therein inwardly of the front end thereof, a carbide tool bit slidable in the aperture so as to be adjustably positionable outwardly of the... | 01/23/1979 |
| 4124206 | Water jump rope device Improvement in a water powered jump rope device having a pair of standards and a hollow water-conducting jump rope rotatably supported by and between the standards, the improvement comprising each standard being free standing and consisting of a hollow ba... | 11/07/1978 |
| 4122586 | Pipe clamp saddle U-bolt clamp saddle for pipe joints, such as automobile exhaust pipes, is formed from a stamped sheet metal blank. The saddle includes two mirror-image halves integrally joined and folded along their "bottom" edge. Symmetrical deformations forming the U-b... | 10/31/1978 |
| 4103843 | Fishing reel Improvement in a fishing reel having a spool upon which a fishing line is wound, a cover for the spool, a coil spring for automatically winding up the fishing line upon release thereof, a spring cover for winding up the spring, a gear train for rotating t... | 08/01/1978 |
| 4081141 | Spray bars for metal rolling and flow control valves Improvement in a spray bar for metal rolling having a body and a plurality of spray nozzles carried thereon, a flow control valve for the spray bar for controlling the flow of liquid through the nozzles, the valve having a valve body and a valve spool rec... | 03/28/1978 |
| 4068465 | Clock using alternating current cycle counting In a method of keeping time by counting the cycles of an alternating current source and providing both alternating and direct current power from the alternating current source, the direct current power including a variable display voltage for illuminating... | 01/17/1978 |
| 4066243 | Vehicle body part holding and positioning device A vehicle body part holding and positioning device comprising a floor supported rollable frame, a pair of side by side pipes supported in an upright position on the frame, a second pair of pipes lengthwise joined together, the second pair of pipes encircl... | 01/03/1978 |
| 4066367 | Brush shave device Improvement in a brush shave device for dispensing liquid shaving soap from a bottle having a shaving brush carried thereon, the bottle having a neck, the shaving brush being of the type having a single tuft of bristles, the improvement comprising a taper... | 01/03/1978 |
