...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7727097 | Sport novelty missile A sport novelty ball has an outer shell and a stabilizing shock absorbing core in which various interior components are embedded. A non-toxic smoke solution is introduced into the ball and stored. Centrally located within the ball is a smoke chamber containing a hea... | 06/01/2010 |
| 7604556 | Chalk marking projectile A marking projectile is disclosed that comprises an elongated projectile body and a porous powder-releasing head fixed to a forward end of the projectile body with an attachment means. A powder reservoir is defined between the projectile body and the powder-releasin... | 10/20/2009 |
| 7481727 | Water-release toy A throwing and catching ball and several games using the same are disclosed. The ball has a perforated outer shell surrounding a hollow interior chamber containing a water-filled balloon. Activation of an actuator adjacent the outer shell, such as when catching the ... | 01/27/2009 |
| 7338343 | Toy grenade A toy grenade has a container enclosed in a casing consisting of two separable half oval-shaped casings. The container is filled with a mixture of powder and color dye and compressed air. The top of the container is normally retained by a spring biased elongated rod... | 03/04/2008 |
| 7318428 | Paint ball gun having paint ball dispenser with threaded connector A paint ball gun is disclosed including a dispenser having a locking connector designed to lockingly engage a locking connector on a gun feed tube or one end of a hollow connecting member. ... | 01/15/2008 |
| 7275486 | Hand grenade simulating device A hand grenade simulating device includes a first shell filled with a marking filler, a second shell disposed in the first shell for receiving a percussion-triggered charge, a striking member which is remote from the charge in a ready position and which is movable t... | 10/02/2007 |
| 7241237 | Method and apparatus for temporarily marking a point of contact The present invention provides a game ball with a transient marking feature that may be used on any court surface. No preparation of the court surface is required. The game ball is coated with a temporary marking agent that is encapsulated or otherwise sealed agains... | 07/10/2007 |
| 7194960 | Non-lethal projectiles for delivering an inhibiting substance to a living target Projectile systems are provided herein employing an inhibiting and/or marking substance for impairing/marking a living target, such as a human or animal target. In preferred embodiments, the projectile system includes a generally frangible projectile that is optimal... | 03/27/2007 |
| 7137863 | Toy having two sliding bobs on a string with end stoppers A swinging bob toy having two bobs constrained to, yet slidable along, a string. Each end of the string has a pair of low-mass, spaced-apart stoppers which allows the end of the string to be easily grasped so that smooth transitions can be made between various modes... | 11/21/2006 |
| 7134978 | Seamless BB paintball This invention is utilizing the principle of repulsion between oil and water, the differences of surface tension of oil and water, and the character of melting of gelatin materials in high temperature and solidification in cold temperature to produce a biodegradable... | 11/14/2006 |
| 7013810 | Projectile for delivery of a tranquilliser A projectile mainly for drug delivery comprises a tubular body casing 1 which defines a cavity 2 for containment of a tranquilizing drug. The casing has an end plug 3 which coaxially supports a hollow needle 4 projecting forward through a... | 03/21/2006 |
| 6935217 | Projectile jacket having frangible closed end and method of manufacture A frangible projectile for gun ammunition wherein the projectile includes a core 96 formed from one or more metal powders which are pressed into a self-supporting compact and incorporated into a metal jacket 10. The metal jacket is initially cup-shaped... | 08/30/2005 |
| 6871594 | Reusable paint grenade A reusable paint dispersing grenade of the type employed in paint ball games is constructed in such a manner as to avoid the use of any combustible materials, and also to avoid the requirement for access to a source of compressed air for operation. The paint grenade... | 03/29/2005 |
| 6726584 | Method and apparatus for temporarily marking a point of contact An encapsulated marking agent is used to provide a temporary mark at a point of contact between two objects. In a specific example, a game ball is coated with a temporary marking agent that is encapsulated or otherwise sealed against exposure to the air. When the ba... | 04/27/2004 |
| 6546874 | Non-lethal projectile for delivering an inhibiting substance to a living target Projectile systems are provided herein employing an inhibiting and/or marking substance for impairing/marking a living target, such as a human or animal target. The projectile systems provide effectiveness by impacting the target with sufficient force to ... | 04/15/2003 |
| 6393992 | Non-lethal projectile for delivering an inhibiting substance to a living target Projectile systems are provided herein employing an inhibiting and/or marking substance for impairing/marking a living target, such as a human or animal target, which projectile systems are optimized to provide maximum effectiveness by impacting the targe... | 05/28/2002 |
| 6332851 | Toy conker A toy conker which has a main body portion attachable to a line member, the body portion having at least one insert which can be struck off.... | 12/25/2001 |
| 6306913 | Container for 4-allylanisole and analog scolytid pesticides A projectile can be used to administer pesticides such as one or more from the group consisting of 4-allylanisole, anisole, allylbenzene, 4-isopropylanisole, p-anisaldehyde, ethylbenzene, cumene, 4-methoxyacetophenone, 4-methylstyrene, 2-propylphenol, phe... | 10/23/2001 |
| 6142895 | Arrow with marking head An arrow having an elongated shaft with opposed ends. A slotted nock and fletching are affixed to one end of the shaft. A marking head having a paint ball is attached to the other end of the shaft.... | 11/07/2000 |
| 5996503 | Reusable gas-powered hand grenade A reusable gas-powered hand grenade is provided. A hand-held housing defi one or more launch tubes. A projectile is loaded in each launch tube with an obturator being positioned therein between the projectile and the launch tube's muzzle end. A sealed re... | 12/07/1999 |
| 5965839 | Non-lethal projectile for delivering an inhibiting substance to a living target A power device includes at least two power conversion circuits respectively having at least one of switching elements, at least one of which switching elements in these conversion circuits being used in common as an element constituting the at least two d... | 10/12/1999 |
| 5936190 | Precision shooting aerodynamic non-spherical safety-oriented projectile An improved, precision shooting, safety oriented, high speed projectile (10) comprising a non-toxic, soft, hollow, capsule (12) formed of a plurality of portions joined together at at least one seam line (14), said seam line (14) being the weakest point o... | 08/10/1999 |
| 5928049 | Toy dart A toy dart includes a cylindrical wall having an inner surface, an outer surface, a first open end at one end of the cylindrical wall, and second open end at the other end of the cylindrical wall. At least two fins are attached to the outer surface of the... | 07/27/1999 |
| 5837645 | Materials and methods utilizing a temporary visual indicator This invention relates to novel compositions containing temporary visual indicators and methods for using these compositions. Specifically, this invention relates to a sunscreen composition containing an indicator that is visible when the substance is app... | 11/17/1998 |
| 5639526 | Paint ball A paint ball including a paint ball shell and an axis extending through the shell to define first and second poles. The paint ball shell fractures in a predetermined pattern upon the receipt of a fracturing force to form fracture lines from the point of i... | 06/17/1997 |
| 5590886 | Reusable paint ball grenade, reloadable with standard .68 caliber paint balls Reusable, mechanically powered Paint Ball Grenade utilizing 0.68 or smaller diameter paint balls. Accepting and storing said paint balls between its upper and lower sections and behind a fingerguard. The device is designed to be grasped in such a way as t... | 01/07/1997 |
| 5538456 | Toy water bomb A water toy has the shape of an aerial bomb or rocket with generally bulbous, resiliently flexible body and a removable tail member with fins, The water toy includes a resilient shell having a mouth and an internal pointed member facing the mouth. A ballo... | 07/23/1996 |
| 5532029 | Materials and methods utilizing a temporary visual indicator This invention relates to novel compositions containing temporary visual indicators and methods for using these compositions. Specifically, this invention relates to a sunscreen composition containing an indicator that is visible when the substance is app... | 07/02/1996 |
| 5515785 | Charge carrying flechette projectile As an abstract of the disclosure, the invention is directed to a miniature rojectile having a forwardly contained charge which is laterally injected into a target upon impact.... | 05/14/1996 |
| 5456036 | Animal scent dispensing pistol assembly An animal scent dispensing pistol assembly for dispensing scent for attracting animals comprising a pistol including a barrel having a sealed base end, an opened tip end, and a bored intermediate portion therebetween; a handle extended from the barrel; a ... | 10/10/1995 |
| 5393054 | Paint ball A paint ball is disclosed having a gelatin capsule which defines a closed interior chamber. A fill material is contained within the interior chamber and this fill material contains 1%-65% polyethylene glycol, 25%-45% starch, up to 0.5% dye and the balance... | 02/28/1995 |
| 5348298 | Combination roller ball and hockey puck A combination roller ball and hockey puck which includes the following; a cylindrical hollow housing having an interior chamber, an arcuate shaped bottom, a circumfused sidewall and a top. The puck provides means for introducing a powder substance within ... | 09/20/1994 |
| 5303496 | Scent distributing method for hunters A method for applying a scent to a hunting or other desired location without approaching the area or contaminating it with human scent. The desired scent is placed in a carrying projectile means such as a pellet for a projectile delivery means such as a c... | 04/19/1994 |
| 5249797 | Hockey training apparatus A hockey training aid and game apparatus includes a portable housing having a base unit and a cover connected to the base unit. The base unit includes a floor and four side walls. The floor contains indicia representing a hockey rink; and the cover includ... | 10/05/1993 |
| 5240450 | Toy hand grenade apparatus A toy assembly includes an elongate body to receive a balloon member arranged for bursting upon a timed mechanism mounted within an upper tube portion of the body projected into the body and piercing the balloon after a predetermined interval. A modificat... | 08/31/1993 |
| 5174807 | Plant eradication method A method of eradicating plants on an inaccessible terrain by selecting hollow balls formed by a frangible membrane, filling such balls with respective charges of herbicide fluid of the type to which such plants are susceptible to provide a supply of such ... | 12/29/1992 |
| 5123657 | Arrow for use by a bow hunter for attracting game An arrow for use by a bow hunter for attracting game, such as a deer, toward the hunter, the arrow being in the form of an elongated tubular arrow shaft, a closure member removably attachable to the shaft forward end, the closure member having a sharp poi... | 06/23/1992 |
| 5096205 | Multi shot arrow A archery device comprising a tubular shaft having a slidable inertial member trapped within the bore extending between the injection molded resilient notch plug conforming with the perimeters of the bore and the notch in the string receiving end and the ... | 03/17/1992 |
| 5035183 | Frangible nonlethal projectile A nonlethal frangible projectile for delivering fluids and the like to a target is composed of a soft cap portion, and a stronger base portion which plugs the rearward end of the cap. Scoring and a thinned nose region facilitates rupture upon impact.... | 07/30/1991 |
| 5035435 | Arrow mounted scent carrier A hunting scent dispersing device for attachment to the shaft of an arrow. The dispersing device includes an absorbant carrier for retaining and permitting release therefrom of a hunting scent which is to be releasably attached to the arrow.... | 07/30/1991 |