Patents by Inventor Dwight A. Johnson

Dwight A. Johnson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10024628
    Abstract: A firearm slide includes a mounting plate that is removably connected to a planar mounting surface of the firearm slide. A rear sight is removably attached to the mounting plate so that different types or styles of rear sights may be used with the firearm. Upon removing the mounting plate itself, various mounting features defined in the planar mounting surface of the slide are exposed. These mounting features can be used to attach any of a variety of accessories (whether a telescopic sight, a red dot sight, a light, or other accessory) directly to the exposed planar mounting surface of the slide.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: July 17, 2018
    Assignee: SIG SAUER, INC.
    Inventors: Sean P. Toner, Keith Andrew Cornish, Robby Dwight Johnson, Matthew Alan Taylor
  • Publication number: 20110162745
    Abstract: Apparatus for adding liquid fertilizer to a water line of a sprinkler system includes a mechanical injector device powered by a paddle wheel turned by water flowing through the water line. As the paddle wheel is turned, liquid fertilizer can be advantageously mixed with the irrigation water or other fluid. The fertilizer reservoir can be positioned on the upper portion of the injector apparatus and can include an inlet connection and a button used to hydraulically prime the system. The fertilizer may be fed into the reservoir via tubing from a separately contained fertilizer source. In some embodiments, an inlet nozzle may increase the inlet velocity of the water, thereby permitting the paddle wheel to operate over a greater flow rate range. The tubing or other conduit can be connected to the fertilizer source container via a quick-connect fitting.
    Type: Application
    Filed: January 3, 2011
    Publication date: July 7, 2011
    Inventors: Glen Grizzle, Dave Morton, Dwight Johnson, Donna J. Johnson
  • Publication number: 20100212764
    Abstract: Apparatus for adding liquid fertilizer to a water line of a sprinkler system includes a mechanical injector device powered by a paddle wheel turned by water flowing through the water line. As the paddle wheel is turned, liquid fertilizer can be advantageously mixed with the irrigation water or other fluid. The fertilizer reservoir can be positioned on the upper portion of the injector apparatus and can include an inlet connection and a button used to hydraulically prime the system. The fertilizer may be fed into the reservoir via tubing from a separately contained fertilizer source. In some embodiments, an inlet nozzle may increase the inlet velocity of the water, thereby permitting the paddle wheel to operate over a greater flow rate range. The tubing or other conduit can be connected to the fertilizer source container via a quick-connect fitting.
    Type: Application
    Filed: October 26, 2007
    Publication date: August 26, 2010
    Applicant: Fertile Earch orp.
    Inventors: Glen Grizzle, Dave Morton, Dwight Johnson
  • Publication number: 20080006789
    Abstract: Tilting of a main valve assembly under high inlet pressure conditions is prevented by supporting the main valve assembly with housing rib engaging a skirt on the main valve guide tube. Pilot valve opening results from contact of an enlargement on the pilot valve stem with the push rod as the pilot valve begins its upward movement. An off center baffle compensates for the pressure pattern resulting from the side entry inlet. Throttling structure provided by a skirt on the guide tube cooperating with a shoulder in the outlet passage provides a desirable large flush flow. The inlet and handle openings in the valve body include bosses adjacent thereto an internal to the housing.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 10, 2008
    Inventor: Dwight Johnson
  • Publication number: 20070138201
    Abstract: A turbine wheel and speed reduction gear system rotate an output shaft in response to flow through a housing having an inlet and an outlet. The output shaft is connected to a flexible and resilient clutch cup that is engageable with a clutch and valve disk. The disk cooperates with a valve seat formed on a flow responsive piston to permit or prevent flow in a flow passage in the piston. When flow occurs, the clutch is clamped to the disk, and the piston and disk move downstream until a control member connected to the disk hits a stop. The valve is opened as the disk stops while the piston continues to move downstream. The clutch rotates the valve disk and control member, and if a maximum flow volume occurs, the control member rotates to an interrupt position and is released from the stop. The valve closes preventing further flow.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Inventor: Dwight Johnson
  • Publication number: 20070108400
    Abstract: A self-contained, modular electrically-operated faucets is disclosed which has all of its components which are likely to need replacement over the life of the device contained in removable modules which may be quickly and easily removed and replaced without necessitating the removal of the device from its installed location. The modular electrically-operated faucet of the present invention is configurable to be either deck mountable or wall mountable, and to allow either a conventional faucet spout or a gooseneck spout to be mounted thereupon. Optionally, when the modules of the modular electrically-operated faucet of the present invention are accessed for removal and replacement, the flow of water through the device may be automatically deactivated by merely removing the housing of the modular electrically-operated faucet.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 17, 2007
    Inventors: Dwight Johnson, Anthony Martinez, James Bobic, Silvio Marti
  • Publication number: 20070068583
    Abstract: A motor-driven hydraulic valve cartridge is used for controlling a flow of fluid through a cavity in a fluid circuit external to the valve cartridge. The valve cartridge includes a valve apparatus and a motor joined into a unitary structure adapted for removable attachment to the external fluid circuit. The unitary structure has a wetted portion thereof including a fluid inlet and a fluid outlet of the valve cartridge, with the wetted portion being disposed to extend into the cavity when the valve cartridge is attached to the external fluid circuit. The valve apparatus has a rotatable element for controlling fluid flow between the inlet and the outlet of the valve cartridge. The motor is fixedly attached to the valve apparatus, and operatively connected to the rotatable element of the valve apparatus for selectively controlling a flow of fluid from the inlet to the outlet of the valve cartridge.
    Type: Application
    Filed: September 27, 2005
    Publication date: March 29, 2007
    Inventors: Dwight Johnson, Silvio Marti
  • Publication number: 20050278908
    Abstract: A hook and an eye are integral with and located at opposite longitudinal ends of a body. The hook includes a tip spaced from the body and defining a mouth for attachment of the hook to a ring or other object. A lock pin mounted in the body moves axially between a closed position engaging the tip of the hook and an open position. The body has a flat, easily gripped shape with a button at one side movable in a transverse direction. A cam system translates transverse button movement into axial movement of the lock pin, and provides a decreasing force-displacement characteristic. The hook is designed to break to prevent user injury in the event of excessive force, and includes a ramp surface facilitating detachment of the hook.
    Type: Application
    Filed: June 17, 2004
    Publication date: December 22, 2005
    Inventor: Dwight Johnson
  • Publication number: 20050127604
    Abstract: A board game comprises a game board having a plurality of individual play regions. Each individual play region comprising a representation of a menorah, and each menorah has from seven to nine candle representation regions. Each candle is a playing path, and each playing path is comprised of a plurality of play spaces commencing with a starting space at each candle's proximal space and terminating with a flame designating position at its distal end. A plurality of play spaces are provided between each starting point and each corresponding flame. At least a first plurality of game cards is provided with each game card designating a play instruction.
    Type: Application
    Filed: October 12, 2004
    Publication date: June 16, 2005
    Inventor: Dwight Johnson
  • Publication number: 20050121463
    Abstract: Apparatus for adding liquid fertilizer to a water line of a sprinkler system includes a mechanical injector device powered by a paddle wheel turned by water flowing through the water line. The mechanical injector device includes a plunger that moves back and forth in the plunger chamber. Movement in one direction allows liquid fertilizer from a liquid fertilizer reservoir to flow into the plunger chamber and movement of the plunger in the opposite direction injects the liquid fertilizer from the plunger chamber into the water. The mechanical injector device is coupled to the paddle wheel which causes movement of the plunger in the plunger chamber in at least one direction. Spring bias can cause movement of the plunger in the other direction. The mechanical injector device can be disabled to stop fertilizer injection while still allowing rotation of the paddle wheel.
    Type: Application
    Filed: April 30, 2004
    Publication date: June 9, 2005
    Inventors: Dwight Johnson, Glen Grizzle, Kary Burns, James Marsden, David Morton
  • Patent number: 5136850
    Abstract: An apparatus for generating cold and hot for application selectively by contact on an object having a paint or coating whose color changes in response to cold and hot temperatures. The apparatus is easy to hold and handle with one hand while holding an object for application, e.g., a doll or toy car, in the other hand. The apparatus includes a battery powered thermoelectric device having a cold sink shaped to form a cold applicator for cooling the paint sufficiently to change its color, and a heat sink shaped to form a heat applicator for changing back the color. For a doll, the cold sink applicator is used to change, for example, the natural color of the lips and cheeks to a make-up color, and a heat sink shaped to form a comb for combing the doll's hair and a heat applicator for returning the natural color of the doll's lips and cheeks through heat application.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: August 11, 1992
    Assignee: Marlow Industries, Inc.
    Inventors: James L. Bierschenk, Edward J. Burke, Dwight A. Johnson
  • Patent number: 4907060
    Abstract: An encapsulated thermoelectric heat pump, apparatus and method for manufacturing the encapsulated thermoelectric heat pump is disclosed. The encapsulated thermoelectric heat pump includes a plurality of spaced n-type and p-type thermoelectric elements arranged alternatively in rows and columns. The thermoelectric elements having opposing ends operatively connected to first and second metalized ceramic substrates. The first and second metalizations patterned to connect serially the thermoelectric elements. The space between the spaced thermoelectric elements is filled with a microballoon filled epoxy for substantially increasing the strength of the thermoelectric heat pump to withstand a stress of more than 2000 g's.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: March 6, 1990
    Inventors: John L. Nelson, Michael D. Gilley, Dwight A. Johnson